source: subversion/applications/rendering/osmarender6/osmarender.xsl @ 6428

Last change on this file since 6428 was 6428, checked in by bobkare, 12 years ago

Updated wayMarker which seems to have disappeared between osmarender5 and 6

File size: 160.8 KB
Line 
1<?xml version="1.0" encoding="UTF-8"?>
2<!--
3==============================================================================
4
5Osmarender 6.0 Alpha 6
6    with - orig area generation
7         - one node way filtered out
8         - filtered out missing multipolygon relation members from areas
9         - filtered out missing node ref from ways
10
11==============================================================================
12
13Copyright (C) 2006-2007  Etienne Cherdlu, Jochen Topf
14
15This program is free software; you can redistribute it and/or modify
16it under the terms of the GNU General Public License as published by
17the Free Software Foundation; either version 2 of the License, or
18(at your option) any later version.
19
20This program is distributed in the hope that it will be useful,
21but WITHOUT ANY WARRANTY; without even the implied warranty of
22MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
23GNU General Public License for more details.
24
25You should have received a copy of the GNU General Public License
26along with this program; if not, write to the Free Software
27Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA
28
29==============================================================================
30-->
31<xsl:stylesheet
32  xmlns="http://www.w3.org/2000/svg"
33  xmlns:svg="http://www.w3.org/2000/svg"
34  xmlns:xlink="http://www.w3.org/1999/xlink"
35  xmlns:xi="http://www.w3.org/2001/XInclude"
36  xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
37  xmlns:cc="http://web.resource.org/cc/"
38  xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
39  xmlns:dc="http://purl.org/dc/elements/1.1/"
40  xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
41  xmlns:exslt="http://exslt.org/common"
42  xmlns:msxsl="urn:schemas-microsoft-com:xslt"
43  exclude-result-prefixes="exslt msxsl" 
44  version="1.0">
45
46  <xsl:output method="xml" omit-xml-declaration="no" indent="yes" encoding="UTF-8"/>
47
48  <!-- This msxsl script extension fools msxsl into interpreting exslt extensions as msxsl ones, so
49       we can write code using exslt extensions even though msxsl only recognises the msxsl extension
50       namespace.  Thanks to David Carlisle for this: http://dpcarlisle.blogspot.com/2007/05/exslt-node-set-function.html -->
51  <msxsl:script language="JScript" implements-prefix="exslt">
52    this['node-set'] =  function (x) {
53    return x;
54    }
55  </msxsl:script>
56
57  <xsl:param name="osmfile" select="/rules/@data"/>
58  <xsl:param name="title" select="/rules/@title"/>
59
60  <xsl:param name="scale" select="/rules/@scale"/>
61  <xsl:param name="symbolScale" select="/rules/@symbolScale"/>
62  <xsl:param name='textAttenuation' select='/rules/@textAttenuation'/>
63  <xsl:param name="withOSMLayers" select="/rules/@withOSMLayers"/>
64  <xsl:param name="svgBaseProfile" select="/rules/@svgBaseProfile"/>
65  <xsl:param name="symbolsDir" select="/rules/@symbolsDir"/>
66
67  <xsl:param name="showGrid" select="/rules/@showGrid"/>
68  <xsl:param name="showBorder" select="/rules/@showBorder"/>
69  <xsl:param name="showScale" select="/rules/@showScale"/>
70  <xsl:param name="showLicense" select="/rules/@showLicense"/>
71
72  <xsl:key name="nodeById" match="/osm/node" use="@id"/>
73  <xsl:key name="wayById" match="/osm/way" use="@id"/>
74  <xsl:key name="wayByNode" match="/osm/way" use="nd/@ref"/>
75  <xsl:key name="relationByWay" match="/osm/relation" use="member/@ref"/>
76
77  <xsl:variable name="data" select="document($osmfile)"/>
78
79  <!-- Use a web-service (if available) to get the current date -->
80  <xsl:variable name="now" select="document('http://xobjex.com/service/date.xsl')" />
81  <xsl:variable name="date">
82    <xsl:choose>
83      <xsl:when test="$now">
84        <xsl:value-of select="substring($now/date/utc/@stamp,1,10)" />
85        <!-- Assumes 4 digit year -->
86      </xsl:when>
87      <xsl:otherwise>2007-01-01</xsl:otherwise>
88    </xsl:choose>
89  </xsl:variable>
90  <xsl:variable name="year">
91    <xsl:choose>
92      <xsl:when test="$now">
93        <xsl:value-of select="$now/date/utc/year" />
94      </xsl:when>
95      <xsl:otherwise>2007</xsl:otherwise>
96    </xsl:choose>
97  </xsl:variable>
98
99  <!-- extra height for marginalia at top -->
100  <xsl:variable name="marginaliaTopHeight">
101    <xsl:choose>
102      <xsl:when test="$title != ''">40</xsl:when>
103      <xsl:when test="($title = '') and ($showBorder = 'yes')">1.5</xsl:when>
104      <xsl:otherwise>0</xsl:otherwise>
105    </xsl:choose>
106  </xsl:variable>
107
108  <!-- extra height for marginalia at bottom -->
109  <xsl:variable name="marginaliaBottomHeight">
110    <xsl:choose>
111      <xsl:when test="($showScale = 'yes') or ($showLicense = 'yes')">45</xsl:when>
112      <xsl:when test="($showScale != 'yes') and ($showLicense != 'yes') and ($showBorder = 'yes')">1.5</xsl:when>
113      <xsl:otherwise>0</xsl:otherwise>
114    </xsl:choose>
115  </xsl:variable>
116
117  <!-- extra width for border -->
118  <xsl:variable name="extraWidth">
119    <xsl:choose>
120      <xsl:when test="$showBorder = 'yes'">3</xsl:when>
121      <xsl:otherwise>0</xsl:otherwise>
122    </xsl:choose>
123  </xsl:variable>
124
125  <!-- extra height for border -->
126  <xsl:variable name="extraHeight">
127    <xsl:choose>
128      <xsl:when test="($title = '') and ($showBorder = 'yes')">3</xsl:when>
129      <xsl:otherwise>0</xsl:otherwise>
130    </xsl:choose>
131  </xsl:variable>
132
133  <!-- Calculate the size of the bounding box based on the file content -->
134  <xsl:variable name="bllat">
135    <xsl:for-each select="$data/osm/node/@lat">
136      <xsl:sort data-type="number" order="ascending"/>
137      <xsl:if test="position()=1">
138        <xsl:value-of select="."/>
139      </xsl:if>
140    </xsl:for-each>
141  </xsl:variable>
142  <xsl:variable name="bllon">
143    <xsl:for-each select="$data/osm/node/@lon">
144      <xsl:sort data-type="number" order="ascending"/>
145      <xsl:if test="position()=1">
146        <xsl:value-of select="."/>
147      </xsl:if>
148    </xsl:for-each>
149  </xsl:variable>
150  <xsl:variable name="trlat">
151    <xsl:for-each select="$data/osm/node/@lat">
152      <xsl:sort data-type="number" order="descending"/>
153      <xsl:if test="position()=1">
154        <xsl:value-of select="."/>
155      </xsl:if>
156    </xsl:for-each>
157  </xsl:variable>
158  <xsl:variable name="trlon">
159    <xsl:for-each select="$data/osm/node/@lon">
160      <xsl:sort data-type="number" order="descending"/>
161      <xsl:if test="position()=1">
162        <xsl:value-of select="."/>
163      </xsl:if>
164    </xsl:for-each>
165  </xsl:variable>
166  <xsl:variable name="bottomLeftLatitude">
167    <xsl:choose>
168      <xsl:when test="/rules/bounds">
169        <xsl:value-of select="/rules/bounds/@minlat"/>
170      </xsl:when>
171      <xsl:when test="$data/osm/bounds">
172        <xsl:value-of select="$data/osm/bounds/@request_minlat"/>
173      </xsl:when>
174      <xsl:otherwise>
175        <xsl:value-of select="$bllat"/>
176      </xsl:otherwise>
177    </xsl:choose>
178  </xsl:variable>
179  <xsl:variable name="bottomLeftLongitude">
180    <xsl:choose>
181      <xsl:when test="/rules/bounds">
182        <xsl:value-of select="/rules/bounds/@minlon"/>
183      </xsl:when>
184      <xsl:when test="$data/osm/bounds">
185        <xsl:value-of select="$data/osm/bounds/@request_minlon"/>
186      </xsl:when>
187      <xsl:otherwise>
188        <xsl:value-of select="$bllon"/>
189      </xsl:otherwise>
190    </xsl:choose>
191  </xsl:variable>
192  <xsl:variable name="topRightLatitude">
193    <xsl:choose>
194      <xsl:when test="/rules/bounds">
195        <xsl:value-of select="/rules/bounds/@maxlat"/>
196      </xsl:when>
197      <xsl:when test="$data/osm/bounds">
198        <xsl:value-of select="$data/osm/bounds/@request_maxlat"/>
199      </xsl:when>
200      <xsl:otherwise>
201        <xsl:value-of select="$trlat"/>
202      </xsl:otherwise>
203    </xsl:choose>
204  </xsl:variable>
205  <xsl:variable name="topRightLongitude">
206    <xsl:choose>
207      <xsl:when test="/rules/bounds">
208        <xsl:value-of select="/rules/bounds/@maxlon"/>
209      </xsl:when>
210      <xsl:when test="$data/osm/bounds">
211        <xsl:value-of select="$data/osm/bounds/@request_maxlon"/>
212      </xsl:when>
213      <xsl:otherwise>
214        <xsl:value-of select="$trlon"/>
215      </xsl:otherwise>
216    </xsl:choose>
217  </xsl:variable>
218
219  <!-- Derive the latitude of the middle of the map -->
220  <xsl:variable name="middleLatitude" select="($topRightLatitude + $bottomLeftLatitude) div 2.0"/>
221  <!--woohoo lets do trigonometry in xslt -->
222  <!--convert latitude to radians -->
223  <xsl:variable name="latr" select="$middleLatitude * 3.1415926 div 180.0"/>
224  <!--taylor series: two terms is 1% error at lat<68 and 10% error lat<83. we probably need polar projection by then -->
225  <xsl:variable name="coslat" select="1 - ($latr * $latr) div 2 + ($latr * $latr * $latr * $latr) div 24"/>
226  <xsl:variable name="projection" select="1 div $coslat"/>
227
228  <xsl:variable name="dataWidth" select="(number($topRightLongitude)-number($bottomLeftLongitude))*10000*$scale"/>
229  <xsl:variable name="dataHeight" select="(number($topRightLatitude)-number($bottomLeftLatitude))*10000*$scale*$projection"/>
230  <xsl:variable name="km" select="(0.0089928*$scale*10000*$projection)"/>
231
232  <xsl:variable name="documentWidth">
233    <xsl:choose>
234      <xsl:when test="$dataWidth &gt; (number(/rules/@minimumMapWidth) * $km)">
235        <xsl:value-of select="$dataWidth"/>
236      </xsl:when>
237      <xsl:otherwise>
238        <xsl:value-of select="number(/rules/@minimumMapWidth) * $km"/>
239      </xsl:otherwise>
240    </xsl:choose>
241  </xsl:variable>
242
243  <xsl:variable name="documentHeight">
244    <xsl:choose>
245      <xsl:when test="$dataHeight &gt; (number(/rules/@minimumMapHeight) * $km)">
246        <xsl:value-of select="$dataHeight"/>
247      </xsl:when>
248      <xsl:otherwise>
249        <xsl:value-of select="number(/rules/@minimumMapHeight) * $km"/>
250      </xsl:otherwise>
251    </xsl:choose>
252  </xsl:variable>
253
254  <xsl:variable name="width" select="($documentWidth div 2) + ($dataWidth div 2)"/>
255  <xsl:variable name="height" select="($documentHeight div 2) + ($dataHeight div 2)"/>
256
257
258
259  <!-- Main template -->
260  <xsl:template match="/rules">
261
262    <!-- Include an external css stylesheet if one was specified in the rules file -->
263    <xsl:if test="@xml-stylesheet">
264      <xsl:processing-instruction name="xml-stylesheet">
265        href="<xsl:value-of select="@xml-stylesheet"/>" type="text/css"
266      </xsl:processing-instruction>
267    </xsl:if>
268
269    <xsl:variable name="svgWidth" select="$documentWidth + $extraWidth"/>
270    <xsl:variable name="svgHeight" select="$documentHeight + $marginaliaTopHeight + $marginaliaBottomHeight"/>
271
272    <svg id="main"
273  version="1.1"
274  baseProfile="{$svgBaseProfile}"
275  width="{$svgWidth}px"
276  height="{$svgHeight}px"
277  viewBox="{-$extraWidth div 2} {-$extraHeight div 2} {$svgWidth} {$svgHeight}">
278      <xsl:if test="/rules/@interactive='yes'">
279        <xsl:attribute name="onscroll">fnOnScroll(evt)</xsl:attribute>
280        <xsl:attribute name="onzoom">fnOnZoom(evt)</xsl:attribute>
281        <xsl:attribute name="onload">fnOnLoad(evt)</xsl:attribute>
282        <xsl:attribute name="onmousedown">fnOnMouseDown(evt)</xsl:attribute>
283        <xsl:attribute name="onmousemove">fnOnMouseMove(evt)</xsl:attribute>
284        <xsl:attribute name="onmouseup">fnOnMouseUp(evt)</xsl:attribute>
285      </xsl:if>
286
287      <xsl:call-template name="metadata"/>
288
289      <!-- Include javaScript functions for all the dynamic stuff -->
290      <xsl:if test="/rules/@interactive='yes'">
291        <xsl:call-template name="javaScript"/>
292      </xsl:if>
293
294
295      <defs id="defs-rulefile">
296        <!-- Get any <defs> and styles from the rules file -->
297        <xsl:copy-of select="defs/*"/>
298      </defs>
299
300
301      <xsl:if test="$symbolsDir != ''">
302        <!-- Get all symbols mentioned in the rules file from the symbolsDir -->
303        <defs id="defs-symbols">
304          <xsl:for-each select="/rules//symbol/@ref">
305            <xsl:copy-of select="document(concat($symbolsDir,'/', ., '.svg'))/svg:svg/svg:defs/svg:symbol"/>
306          </xsl:for-each>
307        </defs>
308      </xsl:if>
309
310      <!-- Pre-generate named path definitions for all ways -->
311      <xsl:variable name="allWays" select="$data/osm/way"/>
312      <defs id="defs-ways">
313        <xsl:for-each select="$allWays">
314          <xsl:call-template name="generateWayPaths"/>
315        </xsl:for-each>
316      </defs>
317
318      <!-- Clipping rectangle for map -->
319      <clipPath id="map-clipping">
320        <rect id="map-clipping-rect" x="0px" y="0px" height="{$documentHeight}px" width="{$documentWidth}px"/>
321      </clipPath>
322
323      <g id="map" clip-path="url(#map-clipping)" inkscape:groupmode="layer" inkscape:label="Map" transform="translate(0,{$marginaliaTopHeight})">
324        <!-- Draw a nice background layer -->
325        <rect id="background" x="0px" y="0px" height="{$documentHeight}px" width="{$documentWidth}px" class="map-background"/>
326
327        <!-- Process all the rules drawing all map features -->
328        <xsl:call-template name="processRules"/>
329      </g>
330
331      <!-- Draw map decoration -->
332      <g id="map-decoration" inkscape:groupmode="layer" inkscape:label="Map decoration" transform="translate(0,{$marginaliaTopHeight})">
333        <!-- Draw a grid if required -->
334        <xsl:if test="$showGrid='yes'">
335          <xsl:call-template name="drawGrid"/>
336        </xsl:if>
337
338        <!-- Draw a border if required -->
339        <xsl:if test="$showBorder='yes'">
340          <xsl:call-template name="drawBorder"/>
341        </xsl:if>
342      </g>
343
344      <!-- Draw map marginalia -->
345      <xsl:if test="($title != '') or ($showScale = 'yes') or ($showLicense = 'yes')">
346        <g id="marginalia" inkscape:groupmode="layer" inkscape:label="Marginalia">
347          <!-- Draw the title -->
348          <xsl:if test="$title!=''">
349            <xsl:call-template name="drawTitle">
350              <xsl:with-param name="title" select="$title"/>
351            </xsl:call-template>
352          </xsl:if>
353
354          <xsl:if test="($showScale = 'yes') or ($showLicense = 'yes')">
355            <g id="marginalia-bottom" inkscape:groupmode="layer" inkscape:label="Marginalia (Bottom)" transform="translate(0,{$marginaliaTopHeight})">
356              <!-- Draw background for marginalia at bottom -->
357              <rect id="marginalia-background" x="0px" y="{$documentHeight + 5}px" height="40px" width="{$documentWidth}px" class="map-marginalia-background"/>
358
359              <!-- Draw the scale in the bottom left corner -->
360              <xsl:if test="$showScale='yes'">
361                <xsl:call-template name="drawScale"/>
362              </xsl:if>
363
364              <!-- Draw Creative commons license -->
365              <xsl:if test="$showLicense='yes'">
366                <xsl:call-template name="in-image-license">
367                  <xsl:with-param name="dx" select="$documentWidth"/>
368                  <xsl:with-param name="dy" select="$documentHeight"/>
369                </xsl:call-template>
370              </xsl:if>
371            </g>
372          </xsl:if>
373        </g>
374      </xsl:if>
375
376      <!-- Draw labels and controls that are in a static position -->
377      <g id="staticElements" transform="scale(1) translate(0,0)">
378        <!-- Draw the +/- zoom controls -->
379        <xsl:if test="/rules/@interactive='yes'">
380          <xsl:call-template name="zoomControl"/>
381        </xsl:if>
382      </g>
383    </svg>
384
385  </xsl:template>
386
387  <!-- Path Fragment Drawing -->
388  <xsl:template name="drawPath">
389    <xsl:param name='instruction' />
390    <xsl:param name='pathId'/>
391    <xsl:param name='extraClasses'/>
392
393    <xsl:variable name="maskId" select="concat('mask_',$pathId)"/>
394
395    <xsl:call-template name='generateMask'>
396      <xsl:with-param name='instruction' select='$instruction'/>
397      <xsl:with-param name='pathId' select='$pathId'/>
398      <xsl:with-param name='maskId' select='$maskId'/>
399    </xsl:call-template>
400
401    <use xlink:href="#{$pathId}">
402      <!-- Copy all attributes from instruction -->
403      <xsl:apply-templates select="$instruction/@*" mode="copyAttributes" />
404      <!-- Add in any extra classes -->
405      <xsl:attribute name="class">
406        <xsl:value-of select='$instruction/@class'/>
407        <xsl:text> </xsl:text>
408        <xsl:value-of select="$extraClasses"/>
409      </xsl:attribute>
410      <!-- If there is a mask class then include the mask attribute -->
411      <xsl:if test='$instruction/@mask-class'>
412        <xsl:attribute name="mask">
413          url(#<xsl:value-of select="$maskId"/>)
414        </xsl:attribute>
415      </xsl:if>
416      <xsl:call-template name="getSvgAttributesFromOsmTags"/>
417    </use>
418  </xsl:template>
419
420
421  <xsl:template name='generateMask'>
422    <xsl:param name='instruction' />
423    <xsl:param name='pathId'/>
424    <xsl:param name='maskId'/>
425
426    <!-- If the instruction has a mask class -->
427    <xsl:if test='$instruction/@mask-class'>
428      <mask id="{$maskId}" maskUnits="userSpaceOnUse">
429        <use xlink:href="#{$pathId}" class="{$instruction/@mask-class} osmarender-mask-black" />
430        <!-- Required for Inkscape bug -->
431        <use xlink:href="#{$pathId}" class="{$instruction/@class} osmarender-mask-white" />
432        <use xlink:href="#{$pathId}" class="{$instruction/@mask-class} osmarender-mask-black" />
433      </mask>
434    </xsl:if>
435  </xsl:template>
436
437
438
439  <!-- Draw a line for the current <way> element using the formatting of the current <line> instruction -->
440  <xsl:template name="drawWay">
441    <xsl:param name="instruction"/>
442    <xsl:param name="way"/>
443    <!-- The current way element if applicable -->
444    <xsl:param name="layer"/>
445
446    <xsl:choose>
447      <xsl:when test="$instruction/@smart-linecap='no'">
448        <xsl:call-template name='drawPath'>
449          <xsl:with-param name='pathId' select="concat('way_normal_',$way/@id)"/>
450          <xsl:with-param name='instruction' select='$instruction'/>
451        </xsl:call-template>
452      </xsl:when>
453      <xsl:otherwise>
454        <xsl:call-template name="drawWayWithSmartLinecaps">
455          <xsl:with-param name="instruction" select="$instruction"/>
456          <xsl:with-param name="way" select="$way"/>
457          <xsl:with-param name="layer" select="$layer"/>
458        </xsl:call-template>
459      </xsl:otherwise>
460    </xsl:choose>
461  </xsl:template>
462
463
464  <xsl:template name="drawWayWithSmartLinecaps">
465    <xsl:param name="instruction"/>
466    <xsl:param name="way"/>
467    <!-- The current way element if applicable -->
468    <xsl:param name="layer"/>
469
470    <!-- The first half of the first segment and the last half of the last segment are treated differently from the main
471                        part of the way path.  The main part is always rendered with a butt line-cap.  Each end fragement is rendered with
472                        either a round line-cap, if it connects to some other path, or with its default line-cap if it is not connected
473                        to anything.  That way, cul-de-sacs etc are terminated with round, square or butt as specified in the style for the
474                        way. -->
475
476    <!-- First draw the middle section of the way with round linejoins and butt linecaps -->
477    <xsl:if test="count($way/nd) &gt; 1">
478      <xsl:call-template name='drawPath'>
479        <xsl:with-param name='pathId' select="concat('way_mid_',$way/@id)"/>
480        <xsl:with-param name='instruction' select='$instruction'/>
481        <xsl:with-param name='extraClasses'>osmarender-stroke-linecap-butt osmarender-no-marker-start osmarender-no-marker-end</xsl:with-param>
482      </xsl:call-template>
483    </xsl:if>
484
485
486    <!-- For the first half segment in the way, count the number of segments that link to the from-node of this segment.
487                        Also count links where the layer tag is less than the layer of this way, if there are links on a lower layer then
488                        we can safely draw a butt line-cap because the lower layer will already have a round line-cap. -->
489    <!-- Process the first segment in the way -->
490    <xsl:variable name="firstNode" select="key('nodeById',$way/nd[1]/@ref)"/>
491
492    <!-- Count the number of segments connecting to the from node. If there is only one (the current segment) then draw a default line.  -->
493    <xsl:variable name="firstNodeConnectionCount" select="count(key('wayByNode',$firstNode/@id))" />
494
495    <!-- Count the number of connectors at a layer lower than the current layer -->
496    <xsl:variable name="firstNodeLowerLayerConnectionCount" select="
497                        count(key('wayByNode',$firstNode/@id)/tag[@k='layer' and @v &lt; $layer]) +
498                        count(key('wayByNode',$firstNode/@id)[count(tag[@k='layer'])=0 and $layer &gt; 0])
499                        " />
500    <xsl:choose>
501      <xsl:when test="$firstNodeConnectionCount=1">
502        <xsl:call-template name='drawPath'>
503          <xsl:with-param name='pathId' select="concat('way_start_',$way/@id)"/>
504          <xsl:with-param name='instruction' select='$instruction'/>
505          <xsl:with-param name="extraClasses">osmarender-no-marker-end</xsl:with-param>
506        </xsl:call-template>
507      </xsl:when>
508      <xsl:when test="$firstNodeLowerLayerConnectionCount>0">
509        <xsl:call-template name='drawPath'>
510          <xsl:with-param name='pathId' select="concat('way_start_',$way/@id)"/>
511          <xsl:with-param name='instruction' select='$instruction'/>
512          <xsl:with-param name="extraClasses">osmarender-stroke-linecap-butt osmarender-no-marker-end</xsl:with-param>
513        </xsl:call-template>
514      </xsl:when>
515      <xsl:otherwise>
516        <xsl:call-template name='drawPath'>
517          <xsl:with-param name='pathId' select="concat('way_start_',$way/@id)"/>
518          <xsl:with-param name='instruction' select='$instruction'/>
519          <xsl:with-param name="extraClasses">osmarender-stroke-linecap-round osmarender-no-marker-end</xsl:with-param>
520        </xsl:call-template>
521      </xsl:otherwise>
522
523    </xsl:choose>
524
525
526    <!-- Process the last segment in the way -->
527    <xsl:variable name="lastNode" select="key('nodeById',$way/nd[last()]/@ref)"/>
528
529    <!-- Count the number of segments connecting to the last node. If there is only one (the current segment) then draw
530                     a default line.  -->
531    <xsl:variable name="lastNodeConnectionCount" select="count(key('wayByNode',$lastNode/@id))" />
532    <!-- Count the number of connectors at a layer lower than the current layer -->
533    <xsl:variable name="lastNodeLowerLayerConnectionCount" select="
534                        count(key('wayByNode',$lastNode/@id)/tag[@k='layer' and @v &lt; $layer]) +
535                        count(key('wayByNode',$lastNode/@id)[count(tag[@k='layer'])=0 and $layer &gt; 0])
536                        " />
537
538
539    <xsl:choose>
540      <xsl:when test="$lastNodeConnectionCount=1">
541        <xsl:call-template name='drawPath'>
542          <xsl:with-param name='pathId' select="concat('way_end_',$way/@id)"/>
543          <xsl:with-param name='instruction' select='$instruction'/>
544          <xsl:with-param name="extraClasses">osmarender-no-marker-start</xsl:with-param>
545        </xsl:call-template>
546      </xsl:when>
547      <xsl:when test="$lastNodeLowerLayerConnectionCount>0">
548        <xsl:call-template name='drawPath'>
549          <xsl:with-param name='pathId' select="concat('way_end_',$way/@id)"/>
550          <xsl:with-param name='instruction' select='$instruction'/>
551          <xsl:with-param name="extraClasses">osmarender-stroke-linecap-butt osmarender-no-marker-start</xsl:with-param>
552        </xsl:call-template>
553      </xsl:when>
554      <xsl:otherwise>
555        <xsl:call-template name='drawPath'>
556          <xsl:with-param name='pathId' select="concat('way_end_',$way/@id)"/>
557          <xsl:with-param name='instruction' select='$instruction'/>
558          <xsl:with-param name="extraClasses">osmarender-stroke-linecap-round osmarender-no-marker-start</xsl:with-param>
559        </xsl:call-template>
560      </xsl:otherwise>
561
562    </xsl:choose>
563
564  </xsl:template>
565
566
567  <!-- Draw a circle for the current <node> element using the formatting of the current <circle> instruction -->
568  <xsl:template name="drawCircle">
569    <xsl:param name="instruction"/>
570
571    <xsl:variable name="x" select="($width)-((($topRightLongitude)-(@lon))*10000*$scale)"/>
572    <xsl:variable name="y" select="($height)+((($bottomLeftLatitude)-(@lat))*10000*$scale*$projection)"/>
573
574    <circle cx="{$x}" cy="{$y}">
575      <xsl:apply-templates select="$instruction/@*" mode="copyAttributes"/>
576      <!-- Copy all the svg attributes from the <circle> instruction -->
577    </circle>
578
579  </xsl:template>
580
581
582  <!-- Draw a symbol for the current <node> element using the formatting of the current <symbol> instruction -->
583  <xsl:template name="drawSymbol">
584    <xsl:param name="instruction"/>
585
586    <xsl:variable name="x" select="($width)-((($topRightLongitude)-(@lon))*10000*$scale)"/>
587    <xsl:variable name="y" select="($height)+((($bottomLeftLatitude)-(@lat))*10000*$scale*$projection)"/>
588
589    <g transform="translate({$x},{$y}) scale({$symbolScale})">
590      <use>
591        <xsl:if test="$instruction/@ref">
592          <xsl:attribute name="xlink:href">
593            <xsl:value-of select="concat('#symbol-', $instruction/@ref)"/>
594          </xsl:attribute>
595        </xsl:if>
596        <xsl:apply-templates select="$instruction/@*" mode="copyAttributes"/>
597        <!-- Copy all the attributes from the <symbol> instruction -->
598      </use>
599    </g>
600  </xsl:template>
601
602
603  <!-- Render the appropriate attribute of the current <node> element using the formatting of the current <text> instruction -->
604  <xsl:template name="renderText">
605    <xsl:param name="instruction"/>
606
607    <xsl:variable name="x" select="($width)-((($topRightLongitude)-(@lon))*10000*$scale)"/>
608    <xsl:variable name="y" select="($height)+((($bottomLeftLatitude)-(@lat))*10000*$scale*$projection)"/>
609
610    <text>
611      <xsl:apply-templates select="$instruction/@*" mode="copyAttributes"/>
612      <xsl:attribute name="x">
613        <xsl:value-of select="$x"/>
614      </xsl:attribute>
615      <xsl:attribute name="y">
616        <xsl:value-of select="$y"/>
617      </xsl:attribute>
618      <xsl:call-template name="getSvgAttributesFromOsmTags"/>
619      <xsl:value-of select="tag[@k=$instruction/@k]/@v"/>
620    </text>
621  </xsl:template>
622
623
624  <!-- Render the appropriate attribute of the current <segment> element using the formatting of the current <textPath> instruction -->
625  <xsl:template name="renderTextPath">
626    <xsl:param name="instruction"/>
627    <xsl:param name="pathId"/>
628    <xsl:param name="pathDirection"/>
629    <xsl:param name='text'/>
630
631    <xsl:variable name='pathLengthSquared'>
632      <xsl:call-template name='getPathLength'>
633        <xsl:with-param name='pathLengthMultiplier'>
634          <!-- This factor is used to adjust the path-length for comparison with text along a path to determine whether it will fit. -->
635          <xsl:choose>
636            <xsl:when test='$instruction/@textAttenuation'>
637              <xsl:value-of select='$instruction/@textAttenuation'/>
638            </xsl:when>
639            <xsl:when test='string($textAttenuation)'>
640              <xsl:value-of select='$textAttenuation'/>
641            </xsl:when>
642            <xsl:otherwise>99999999</xsl:otherwise>
643          </xsl:choose>
644        </xsl:with-param>
645        <xsl:with-param name='nodes' select='nd'/>
646      </xsl:call-template>
647    </xsl:variable>
648
649    <xsl:variable name='textLength' select='string-length($text)' />
650    <xsl:variable name='textLengthSquared100' select='($textLength)*($textLength)' />
651    <xsl:variable name='textLengthSquared90' select='($textLength *.9)*($textLength*.9)' />
652    <xsl:variable name='textLengthSquared80' select='($textLength *.8)*($textLength*.8)' />
653    <xsl:variable name='textLengthSquared70' select='($textLength *.7)*($textLength*.7)' />
654
655    <xsl:choose>
656      <xsl:when test='($pathLengthSquared) > $textLengthSquared100'>
657        <text>
658          <xsl:apply-templates select="$instruction/@*" mode="renderTextPath-text"/>
659          <textPath xlink:href="#{$pathId}">
660            <xsl:apply-templates select="$instruction/@*" mode="renderTextPath-textPath"/>
661            <xsl:call-template name="getSvgAttributesFromOsmTags"/>
662            <xsl:value-of select="$text"/>
663          </textPath>
664        </text>
665      </xsl:when>
666      <xsl:when test='($pathLengthSquared) > ($textLengthSquared90)'>
667        <text>
668          <xsl:apply-templates select="$instruction/@*" mode="renderTextPath-text"/>
669          <textPath xlink:href="#{$pathId}">
670            <xsl:attribute name='font-size'>90%</xsl:attribute>
671            <xsl:apply-templates select="$instruction/@*" mode="renderTextPath-textPath"/>
672            <xsl:call-template name="getSvgAttributesFromOsmTags"/>
673            <xsl:value-of select="$text"/>
674          </textPath>
675        </text>
676      </xsl:when>
677      <xsl:when test='($pathLengthSquared) > ($textLengthSquared80)'>
678        <text>
679          <xsl:apply-templates select="$instruction/@*" mode="renderTextPath-text"/>
680          <textPath xlink:href="#{$pathId}">
681            <xsl:attribute name='font-size'>80%</xsl:attribute>
682            <xsl:apply-templates select="$instruction/@*" mode="renderTextPath-textPath"/>
683            <xsl:call-template name="getSvgAttributesFromOsmTags"/>
684            <xsl:value-of select="$text"/>
685          </textPath>
686        </text>
687      </xsl:when>
688      <xsl:when test='($pathLengthSquared) > ($textLengthSquared70)'>
689        <text>
690          <xsl:apply-templates select="$instruction/@*" mode="renderTextPath-text"/>
691          <textPath xlink:href="#{$pathId}">
692            <xsl:attribute name='font-size'>70%</xsl:attribute>
693            <xsl:apply-templates select="$instruction/@*" mode="renderTextPath-textPath"/>
694            <xsl:call-template name="getSvgAttributesFromOsmTags"/>
695            <xsl:value-of select="$text"/>
696          </textPath>
697        </text>
698      </xsl:when>
699      <xsl:otherwise />
700      <!-- Otherwise don't render the text -->
701    </xsl:choose>
702  </xsl:template>
703
704
705  <xsl:template name='getPathLength'>
706    <xsl:param name='sumLon' select='number("0")' />
707    <!-- initialise sum to zero -->
708    <xsl:param name='sumLat' select='number("0")' />
709    <!-- initialise sum to zero -->
710    <xsl:param name='nodes'/>
711    <xsl:param name='pathLengthMultiplier'/>
712    <xsl:choose>
713      <xsl:when test='$nodes[1] and $nodes[2]'>
714        <xsl:variable name='fromNode' select='key("nodeById",$nodes[1]/@ref)'/>
715        <xsl:variable name='toNode' select='key("nodeById",$nodes[2]/@ref)'/>
716        <xsl:variable name='lengthLon' select='($fromNode/@lon)-($toNode/@lon)'/>
717        <xsl:variable name='absLengthLon'>
718          <xsl:choose>
719            <xsl:when test='$lengthLon &lt; 0'>
720              <xsl:value-of select='$lengthLon * -1'/>
721            </xsl:when>
722            <xsl:otherwise>
723              <xsl:value-of select='$lengthLon'/>
724            </xsl:otherwise>
725          </xsl:choose>
726        </xsl:variable>
727        <xsl:variable name='lengthLat' select='($fromNode/@lat)-($toNode/@lat)'/>
728        <xsl:variable name='absLengthLat'>
729          <xsl:choose>
730            <xsl:when test='$lengthLat &lt; 0'>
731              <xsl:value-of select='$lengthLat * -1'/>
732            </xsl:when>
733            <xsl:otherwise>
734              <xsl:value-of select='$lengthLat'/>
735            </xsl:otherwise>
736          </xsl:choose>
737        </xsl:variable>
738        <xsl:call-template name='getPathLength'>
739          <xsl:with-param name='sumLon' select='$sumLon+$absLengthLon'/>
740          <xsl:with-param name='sumLat' select='$sumLat+$absLengthLat'/>
741          <xsl:with-param name='nodes' select='$nodes[position()!=1]'/>
742          <xsl:with-param name='pathLengthMultiplier' select='$pathLengthMultiplier'/>
743        </xsl:call-template>
744      </xsl:when>
745      <xsl:otherwise>
746        <!-- Add the square of the total horizontal length to the square of the total vertical length to get the square of
747                                     the total way length.  We don't have a sqrt() function so leave it squared.
748                                     Multiply by 1,000 so that we are usually dealing with a values greater than 1.  Squares of values between 0 and 1
749                                     are smaller and so not very useful.
750                                     Multiply the latitude component by $projection to adjust for Mercator projection issues.
751                                     -->
752        <xsl:value-of select='(
753                                        (($sumLon*1000*$pathLengthMultiplier)*($sumLon*1000*$pathLengthMultiplier))+
754                                        (($sumLat*1000*$pathLengthMultiplier*$projection)*($sumLat*1000*$pathLengthMultiplier*$projection))
755                                        )'/>
756      </xsl:otherwise>
757    </xsl:choose>
758  </xsl:template>
759
760
761  <!-- Suppress the following attributes, allow everything else -->
762  <xsl:template match="@startOffset|@method|@spacing|@lengthAdjust|@textLength|@k" mode="renderTextPath-text" />
763
764  <xsl:template match="@*" mode="renderTextPath-text">
765    <xsl:copy/>
766  </xsl:template>
767
768
769  <!-- Allow the following attributes, suppress everything else -->
770  <xsl:template match="@startOffset|@method|@spacing|@lengthAdjust|@textLength" mode="renderTextPath-textPath">
771    <xsl:copy/>
772  </xsl:template>
773
774  <xsl:template match="@*" mode="renderTextPath-textPath" />
775
776
777  <!-- If there are any tags like <tag k="svg:font-size" v="5"/> then add these as attributes of the svg output -->
778  <xsl:template name="getSvgAttributesFromOsmTags">
779    <xsl:for-each select="tag[contains(@k,'svg:')]">
780      <xsl:attribute name="{substring-after(@k,'svg:')}">
781        <xsl:value-of select="@v"/>
782      </xsl:attribute>
783    </xsl:for-each>
784  </xsl:template>
785
786
787  <xsl:template name="renderArea">
788    <xsl:param name="instruction"/>
789    <xsl:param name="pathId"/>
790
791    <use xlink:href="#{$pathId}">
792      <xsl:apply-templates select="$instruction/@*" mode="copyAttributes"/>
793    </use>
794  </xsl:template>
795
796
797  <!-- Templates to process line, circle, text, etc. instructions -->
798  <!-- Each template is passed a variable containing the set of elements that need to
799         be processed.  The set of elements is already determined by the rules, so
800         these templates don't need to know anything about the rules context they are in. -->
801
802  <!-- Process a <line> instruction -->
803  <xsl:template match="line">
804    <xsl:param name="elements"/>
805    <xsl:param name="layer"/>
806
807    <!-- This is the instruction that is currently being processed -->
808    <xsl:variable name="instruction" select="."/>
809
810    <g>
811      <xsl:apply-templates select="@*" mode="copyAttributes" />
812      <!-- Add all the svg attributes of the <line> instruction to the <g> element -->
813
814      <!-- For each way -->
815      <xsl:apply-templates select="$elements" mode="line">
816        <xsl:with-param name="instruction" select="$instruction"/>
817        <xsl:with-param name="layer" select="$layer"/>
818      </xsl:apply-templates>
819
820    </g>
821  </xsl:template>
822
823
824  <!-- Suppress output of any unhandled elements -->
825  <xsl:template match="*" mode="line"/>
826
827
828  <!-- Draw lines for a way  -->
829  <xsl:template match="way" mode="line">
830    <xsl:param name="instruction"/>
831    <xsl:param name="layer"/>
832
833    <!-- The current <way> element -->
834    <xsl:variable name="way" select="."/>
835
836    <!-- DODI: !!!WORKAROUND!!! skip one node ways-->
837    <xsl:if test="count($way/nd) &gt; 1">
838      <xsl:call-template name="drawWay">
839        <xsl:with-param name="instruction" select="$instruction"/>
840        <xsl:with-param name="way" select="$way"/>
841        <xsl:with-param name="layer" select="$layer"/>
842      </xsl:call-template>
843    </xsl:if >
844  </xsl:template>
845
846
847  <!-- Process an <area> instruction -->
848  <xsl:template match="area">
849    <xsl:param name="elements"/>
850
851    <!-- This is the instruction that is currently being processed -->
852    <xsl:variable name="instruction" select="."/>
853
854    <g>
855      <xsl:apply-templates select="@*" mode="copyAttributes"/>
856      <!-- Add all the svg attributes of the <line> instruction to the <g> element -->
857
858      <!-- For each way -->
859      <xsl:apply-templates select="$elements" mode="area">
860        <xsl:with-param name="instruction" select="$instruction"/>
861      </xsl:apply-templates>
862    </g>
863  </xsl:template>
864
865
866  <!-- Discard anything that is not matched by a more specific template -->
867  <xsl:template match="*" mode="area"/>
868
869
870  <!-- Draw area for a <way> -->
871  <xsl:template match="way" mode="area">
872    <xsl:param name="instruction"/>
873
874    <!-- DODI:  removed because duplicate definition generated if area referenced 2 or more times -->
875    <!-- DODI:  reenabled because of "duplicate point detection in lines2curves.pl " -->
876    <!-- <xsl:call-template name="generateAreaPath"/> -->
877
878    <xsl:variable name="pathArea">
879      <xsl:call-template name="generateAreaPath"/>
880    </xsl:variable>
881
882    <!-- DODI: do now draw empty ways/areas-->
883    <xsl:if test ="$pathArea!=''">
884      <path id="area_{@id}" d="{$pathArea}"/>
885      <xsl:call-template name="renderArea">
886        <xsl:with-param name="instruction" select="$instruction"/>
887        <xsl:with-param name="pathId" select="concat('area_',@id)"/>
888      </xsl:call-template>
889    </xsl:if>
890  </xsl:template>
891
892
893  <!-- Process <circle> instruction -->
894  <xsl:template match="circle">
895    <xsl:param name="elements"/>
896
897    <!-- This is the instruction that is currently being processed -->
898    <xsl:variable name="instruction" select="."/>
899
900    <xsl:for-each select="$elements[name()='node']">
901      <xsl:call-template name="drawCircle">
902        <xsl:with-param name="instruction" select="$instruction"/>
903      </xsl:call-template>
904    </xsl:for-each>
905  </xsl:template>
906
907
908  <!-- Process a <symbol> instruction -->
909  <xsl:template match="symbol">
910    <xsl:param name="elements"/>
911
912    <!-- This is the instruction that is currently being processed -->
913    <xsl:variable name="instruction" select="."/>
914
915    <xsl:for-each select="$elements[name()='node']">
916      <xsl:call-template name="drawSymbol">
917        <xsl:with-param name="instruction" select="$instruction"/>
918      </xsl:call-template>
919    </xsl:for-each>
920
921  </xsl:template>
922
923  <!-- wayMarker instruction.  Draws a marker on a node that is perpendicular to a way that passes through the node.
924       If more than one way passes through the node then the result is a bit unspecified.  -->
925  <xsl:template match="wayMarker">
926    <xsl:param name="elements"/>
927   
928    <!-- This is the instruction that is currently being processed -->
929    <xsl:variable name="instruction" select="."/>
930   
931    <g>
932      <!-- Add all the svg attributes of the <wayMarker> instruction to the <g> element -->
933      <xsl:apply-templates select="@*" mode="copyAttributes" />
934     
935      <!-- Process each matched node in turn -->
936      <xsl:for-each select="$elements[name()='node']">
937        <xsl:variable name='nodeId' select="@id" />
938       
939        <xsl:variable name='way' select="key('wayByNode', @id)" />
940        <xsl:variable name='previousNode' select="key('nodeById', $way/nd[@ref=$nodeId]/preceding-sibling::nd[1]/@ref)" />
941        <xsl:variable name='nextNode' select="key('nodeById', $way/nd[@ref=$nodeId]/following-sibling::nd[1]/@ref)" />
942       
943        <xsl:variable name='path'>
944          <xsl:choose>
945            <xsl:when test='$previousNode and $nextNode'>
946              <xsl:call-template name="moveToNode">
947                <xsl:with-param name="node" select="$previousNode"/>
948              </xsl:call-template>
949              <xsl:call-template name="lineToNode">
950                <xsl:with-param name="node" select="."/>
951              </xsl:call-template>
952              <xsl:call-template name="lineToNode">
953                <xsl:with-param name="node" select="$nextNode"/>
954              </xsl:call-template>
955            </xsl:when>
956
957            <xsl:when test='$previousNode'>
958              <xsl:call-template name="moveToNode">
959                <xsl:with-param name="node" select="$previousNode"/>
960              </xsl:call-template>
961              <xsl:call-template name="lineToNode">
962                <xsl:with-param name="node" select="."/>
963              </xsl:call-template>
964              <xsl:call-template name="lineToNode">
965                <xsl:with-param name="node" select="."/>
966              </xsl:call-template>
967            </xsl:when>
968
969            <xsl:when test='$nextNode'>
970              <xsl:call-template name="moveToNode">
971                <xsl:with-param name="node" select="."/>
972              </xsl:call-template>
973              <xsl:call-template name="lineToNode">
974                <xsl:with-param name="node" select="$nextNode"/>
975              </xsl:call-template>
976              <xsl:call-template name="lineToNode">
977                <xsl:with-param name="node" select="$nextNode"/>
978              </xsl:call-template>
979            </xsl:when>
980          </xsl:choose>
981        </xsl:variable>
982       
983        <path id="nodePath_{@id}" d="{$path}"/>
984       
985        <use xlink:href="#nodePath_{@id}">
986          <xsl:apply-templates select="$instruction/@*" mode="copyAttributes" />
987        </use>
988      </xsl:for-each>
989    </g>
990   
991  </xsl:template>
992
993  <!-- Process an <areaText> instruction -->
994  <xsl:template match="areaText">
995    <xsl:param name="elements"/>
996
997    <!-- This is the instruction that is currently being processed -->
998    <xsl:variable name="instruction" select="."/>
999
1000    <!-- Select all <way> elements that have a key that matches the k attribute of the text instruction -->
1001    <xsl:apply-templates select="$elements[name()='way'][tag[@k=$instruction/@k]]" mode="areaTextPath">
1002      <xsl:with-param name="instruction" select="$instruction"/>
1003    </xsl:apply-templates>
1004  </xsl:template>
1005
1006
1007  <xsl:template match="*" mode="areaTextPath"/>
1008
1009
1010  <xsl:template match="way" mode="areaTextPath">
1011    <xsl:param name="instruction"/>
1012
1013    <!-- The current <way> element -->
1014    <xsl:variable name="way" select="."/>
1015
1016    <xsl:call-template name="renderAreaText">
1017      <xsl:with-param name="instruction" select="$instruction"/>
1018      <xsl:with-param name="pathId" select="concat('way_normal_',@id)"/>
1019    </xsl:call-template>
1020
1021  </xsl:template>
1022
1023
1024  <xsl:template name="renderAreaText">
1025    <xsl:param name="instruction"/>
1026
1027    <xsl:variable name='center'>
1028      <xsl:call-template name="areaCenter">
1029        <xsl:with-param name="element" select="." />
1030      </xsl:call-template>
1031    </xsl:variable>
1032
1033    <xsl:variable name="centerLon" select="substring-before($center, ',')" />
1034    <xsl:variable name="centerLat" select="substring-after($center, ',')" />
1035
1036    <xsl:variable name="x" select="($width)-((($topRightLongitude)-($centerLon))*10000*$scale)"/>
1037    <xsl:variable name="y" select="($height)+((($bottomLeftLatitude)-($centerLat))*10000*$scale*$projection)"/>
1038
1039    <text>
1040      <xsl:apply-templates select="$instruction/@*" mode="copyAttributes"/>
1041      <xsl:attribute name="x">
1042        <xsl:value-of select="$x"/>
1043      </xsl:attribute>
1044      <xsl:attribute name="y">
1045        <xsl:value-of select="$y"/>
1046      </xsl:attribute>
1047      <xsl:call-template name="getSvgAttributesFromOsmTags"/>
1048      <xsl:value-of select="tag[@k=$instruction/@k]/@v"/>
1049    </text>
1050  </xsl:template>
1051
1052  <!-- Process an <areaSymbol> instruction -->
1053  <xsl:template match="areaSymbol">
1054    <xsl:param name="elements"/>
1055
1056    <!-- This is the instruction that is currently being processed -->
1057    <xsl:variable name="instruction" select="."/>
1058
1059    <!-- Select all <way> elements -->
1060    <xsl:apply-templates select="$elements[name()='way']" mode="areaSymbolPath">
1061      <xsl:with-param name="instruction" select="$instruction"/>
1062    </xsl:apply-templates>
1063  </xsl:template>
1064
1065
1066  <xsl:template match="*" mode="areaSymbolPath"/>
1067
1068
1069  <xsl:template match="way" mode="areaSymbolPath">
1070    <xsl:param name="instruction"/>
1071
1072    <!-- The current <way> element -->
1073    <xsl:variable name="way" select="."/>
1074
1075    <xsl:call-template name="renderAreaSymbol">
1076      <xsl:with-param name="instruction" select="$instruction"/>
1077      <xsl:with-param name="pathId" select="concat('way_normal_',@id)"/>
1078    </xsl:call-template>
1079
1080  </xsl:template>
1081
1082
1083  <xsl:template name="renderAreaSymbol">
1084    <xsl:param name="instruction"/>
1085
1086    <xsl:variable name='center'>
1087      <xsl:call-template name="areaCenter">
1088        <xsl:with-param name="element" select="." />
1089      </xsl:call-template>
1090    </xsl:variable>
1091
1092    <xsl:message>
1093      areaCenter: <xsl:value-of select="$center" />
1094    </xsl:message>
1095
1096    <xsl:variable name="centerLon" select="substring-before($center, ',')" />
1097    <xsl:variable name="centerLat" select="substring-after($center, ',')" />
1098
1099    <xsl:variable name="x" select="($width)-((($topRightLongitude)-($centerLon))*10000*$scale)"/>
1100    <xsl:variable name="y" select="($height)+((($bottomLeftLatitude)-($centerLat))*10000*$scale*$projection)"/>
1101
1102    <g transform="translate({$x},{$y}) scale({$symbolScale})">
1103      <use>
1104        <xsl:if test="$instruction/@ref">
1105          <xsl:attribute name="xlink:href">
1106            <xsl:value-of select="concat('#symbol-', $instruction/@ref)"/>
1107          </xsl:attribute>
1108        </xsl:if>
1109        <xsl:apply-templates select="$instruction/@*" mode="copyAttributes"/>
1110        <!-- Copy all the attributes from the <symbol> instruction -->
1111      </use>
1112    </g>
1113  </xsl:template>
1114
1115  <!--
1116      areaCenter: Find a good center point for label/icon placement inside of polygon.
1117      Algorithm is described at http://bob.cakebox.net/poly-center.php
1118  -->
1119  <xsl:template name="areaCenter">
1120    <xsl:param name="element" />
1121
1122    <!-- A semicolon-separated list of x,y coordinate pairs of points lying halfway into the polygon at angles to the vertex -->
1123    <xsl:variable name="points">
1124      <xsl:call-template name="areacenterPointsInside">
1125        <xsl:with-param name="element" select="$element" />
1126      </xsl:call-template>
1127    </xsl:variable>
1128
1129    <!-- x,y calculated by a simple average over all x/y's in points -->
1130    <xsl:variable name="mediumpoint">
1131      <xsl:call-template name="areacenterMediumOfPoints">
1132        <xsl:with-param name="points" select="$points" />
1133      </xsl:call-template>
1134    </xsl:variable>
1135    <xsl:variable name="mediumpoint_x" select="substring-before($mediumpoint, ',')" />
1136    <xsl:variable name="mediumpoint_y" select="substring-after($mediumpoint, ',')" />
1137
1138    <!-- Find the point in $points that's closest to $mediumpoint -->
1139    <xsl:call-template name="areacenterNearestPoint">
1140      <xsl:with-param name="points" select="$points" />
1141      <xsl:with-param name="x" select="$mediumpoint_x" />
1142      <xsl:with-param name="y" select="$mediumpoint_y" />
1143    </xsl:call-template>
1144  </xsl:template>
1145
1146  <!-- Returns a semicolon-separated list of x,y pairs -->
1147  <xsl:template name="areacenterPointsInside">
1148    <xsl:param name="element" />
1149
1150    <!-- iterate over every vertex except the first one, which is also the last -->
1151    <xsl:for-each select="$element/nd[position() &gt; 1]">
1152      <xsl:variable name="vertex" select="." />
1153      <xsl:variable name="prev" select="$vertex/preceding-sibling::nd[1]" />
1154      <xsl:variable name="nextId">
1155        <xsl:choose>
1156          <xsl:when test="position() &lt; last()">
1157            <xsl:value-of select="$vertex/following-sibling::nd[1]/@ref" />
1158          </xsl:when>
1159          <xsl:otherwise>
1160            <xsl:value-of select="$vertex/../nd[2]/@ref" />
1161          </xsl:otherwise>
1162        </xsl:choose>
1163      </xsl:variable>
1164      <xsl:variable name="next" select="$vertex/../nd[@ref=$nextId]" />
1165
1166      <!-- Angle at between $prev and $next in $vertex -->
1167      <xsl:variable name="angle">
1168        <xsl:call-template name="angleThroughPoints">
1169          <xsl:with-param name="from" select="key('nodeById', $prev/@ref)" />
1170          <xsl:with-param name="through" select="key('nodeById', $vertex/@ref)" />
1171          <xsl:with-param name="to" select="key('nodeById', $next/@ref)" />
1172        </xsl:call-template>
1173      </xsl:variable>
1174
1175      <!-- Calculate a point on the line going through $vertex at $angle -->
1176      <xsl:variable name="linepoint">
1177        <xsl:call-template name="areacenterLinepoint">
1178          <xsl:with-param name="point" select="key('nodeById', $vertex/@ref)" />
1179          <xsl:with-param name="angle" select="$angle" />
1180        </xsl:call-template>
1181      </xsl:variable>
1182      <xsl:variable name="linepoint_x" select="substring-before($linepoint, ',')" />
1183      <xsl:variable name="linepoint_y" select="substring-after($linepoint, ',')" />
1184
1185      <!-- Get multipolygon relation for areas with holes -->
1186      <xsl:variable name='holerelation' select="key('relationByWay',$element/@id)[tag[@k='type' and @v='multipolygon']]"/>
1187
1188      <!-- Find the nearest intersection between the line vertex-linepoint and the nearest edge inwards into the polygon -->
1189      <xsl:variable name="intersection">
1190        <xsl:call-template name="areacenterFindPointForVertex">
1191          <xsl:with-param name="vertex" select="key('nodeById', $vertex/@ref)" />
1192          <xsl:with-param name="edgestart" select="../nd[1]" />
1193          <xsl:with-param name="linepoint_x" select="$linepoint_x" />
1194          <xsl:with-param name="linepoint_y" select="$linepoint_y" />
1195          <xsl:with-param name="holerelation" select="$holerelation" />
1196        </xsl:call-template>
1197      </xsl:variable>
1198      <xsl:variable name="intersection_x" select="substring-before($intersection, ',')" />
1199      <xsl:variable name="intersection_y" select="substring-after($intersection, ',')" />
1200
1201      <xsl:variable name="point_x" select="key('nodeById', $vertex/@ref)/@lon + ( $intersection_x - key('nodeById', $vertex/@ref)/@lon ) div 2" />
1202      <xsl:variable name="point_y" select="key('nodeById', $vertex/@ref)/@lat + ( $intersection_y - key('nodeById', $vertex/@ref)/@lat ) div 2" />
1203     
1204      <xsl:if test="($point_x &lt;= 0 or $point_x &gt; 0)  and ($point_y &lt;= 0 or $point_y &gt; 0)"> <!-- Only return anything if we actually have a result -->
1205        <!-- Note: this will produce trailing semicolon, which is nice as it simplifies looping over this later -->
1206        <xsl:value-of select="$point_x" />,<xsl:value-of select="$point_y" />;
1207      </xsl:if>
1208    </xsl:for-each>
1209  </xsl:template>
1210
1211  <!-- Calculate the angle between $from and $to in $through. Returns answer in radians -->
1212  <xsl:template name="angleThroughPoints">
1213    <xsl:param name="from" />
1214    <xsl:param name="through" />
1215    <xsl:param name="to" />
1216
1217    <xsl:variable name="from_x" select="($from/@lon) - ($through/@lon)" />
1218    <xsl:variable name="from_y" select="$from/@lat - $through/@lat" />
1219    <xsl:variable name="to_x" select="$to/@lon - $through/@lon" />
1220    <xsl:variable name="to_y" select="$to/@lat - $through/@lat" />
1221
1222    <xsl:variable name="from_angle_">
1223      <xsl:call-template name="atan2">
1224        <xsl:with-param name="x" select="$from_x" />
1225        <xsl:with-param name="y" select="$from_y" />
1226      </xsl:call-template>
1227    </xsl:variable>
1228    <xsl:variable name="from_angle" select="$from_angle_ + $pi" />
1229    <xsl:variable name="to_angle_">
1230      <xsl:call-template name="atan2">
1231        <xsl:with-param name="x" select="$to_x" />
1232        <xsl:with-param name="y" select="$to_y" />
1233      </xsl:call-template>
1234    </xsl:variable>
1235    <xsl:variable name="to_angle" select="$to_angle_ + $pi" />
1236
1237    <xsl:variable name="min_angle">
1238      <xsl:choose>
1239        <xsl:when test="$from_angle &gt; $to_angle">
1240          <xsl:value-of select="$to_angle" />
1241        </xsl:when>
1242        <xsl:otherwise>
1243          <xsl:value-of select="$from_angle" />
1244        </xsl:otherwise>
1245      </xsl:choose>
1246    </xsl:variable>
1247    <xsl:variable name="max_angle">
1248      <xsl:choose>
1249        <xsl:when test="$from_angle &gt; $to_angle">
1250          <xsl:value-of select="$from_angle" />
1251        </xsl:when>
1252        <xsl:otherwise>
1253          <xsl:value-of select="$to_angle" />
1254        </xsl:otherwise>
1255      </xsl:choose>
1256    </xsl:variable>
1257
1258    <xsl:value-of select="$min_angle + ($max_angle - $min_angle) div 2" />
1259  </xsl:template>
1260
1261  <!-- atan2 implementation from http://lists.fourthought.com/pipermail/exslt/2007-March/001540.html -->
1262  <xsl:template name="atan2">
1263    <xsl:param name="y"/>
1264    <xsl:param name="x"/>
1265    <!-- http://lists.apple.com/archives/PerfOptimization-dev/2005/Jan/msg00051.html -->
1266    <xsl:variable name="PI"    select="number(3.1415926535897)"/>
1267    <xsl:variable name="PIBY2" select="$PI div 2.0"/>
1268    <xsl:choose>
1269      <xsl:when test="$x = 0.0">
1270        <xsl:choose>
1271          <xsl:when test="($y &gt; 0.0)">
1272            <xsl:value-of select="$PIBY2"/>
1273          </xsl:when>
1274          <xsl:when test="($y &lt; 0.0)">
1275            <xsl:value-of select="-$PIBY2"/>
1276          </xsl:when>
1277          <xsl:otherwise>
1278            <!-- Error: Degenerate x == y == 0.0 -->
1279            <xsl:value-of select="number(NaN)"/>
1280          </xsl:otherwise>
1281        </xsl:choose>
1282      </xsl:when>
1283      <xsl:otherwise>
1284        <xsl:variable name="z" select="$y div $x"/>
1285        <xsl:variable name="absZ">
1286          <!-- inline abs function -->
1287          <xsl:choose>
1288            <xsl:when test="$z &lt; 0.0">
1289              <xsl:value-of select="- number($z)"/>
1290            </xsl:when>
1291            <xsl:otherwise>
1292              <xsl:value-of select="number($z)"/>
1293            </xsl:otherwise>
1294          </xsl:choose>
1295        </xsl:variable>
1296        <xsl:choose>
1297          <xsl:when test="($absZ &lt; 1.0)">
1298            <xsl:variable name="f1Z" select="$z div (1.0 + 0.28*$z*$z)"/>
1299            <xsl:choose>
1300              <xsl:when test="($x &lt; 0.0) and ($y &lt; 0.0)">
1301                <xsl:value-of select="$f1Z - $PI"/>
1302              </xsl:when>
1303              <xsl:when test="($x &lt; 0.0)">
1304                <xsl:value-of select="$f1Z + $PI"/>
1305              </xsl:when>
1306              <xsl:otherwise>
1307                <xsl:value-of select="$f1Z"/>
1308              </xsl:otherwise>
1309            </xsl:choose>
1310          </xsl:when>
1311          <xsl:otherwise>
1312            <xsl:variable name="f2Z" select="$PIBY2 - ($z div ($z*$z +
13130.28))"/>
1314            <xsl:choose>
1315              <xsl:when test="($y &lt; 0.0)">
1316                <xsl:value-of select="$f2Z - $PI"/>
1317              </xsl:when>
1318              <xsl:otherwise>
1319                <xsl:value-of select="$f2Z"/>
1320              </xsl:otherwise>
1321            </xsl:choose>
1322          </xsl:otherwise>
1323        </xsl:choose>
1324      </xsl:otherwise>
1325    </xsl:choose>
1326  </xsl:template>
1327
1328  <!-- Find a point on the line going through $point at $angle that's guaranteed to be outside the polygon -->
1329  <xsl:template name="areacenterLinepoint">
1330    <xsl:param name="point" />
1331    <xsl:param name="angle" />
1332
1333    <xsl:variable name="cos_angle">
1334      <xsl:call-template name="cos">
1335        <xsl:with-param name="angle" select="$angle"/>
1336      </xsl:call-template>
1337    </xsl:variable>
1338   
1339    <xsl:variable name="sin_angle">
1340      <xsl:call-template name="sin">
1341        <xsl:with-param name="angle" select="$angle"/>
1342      </xsl:call-template>
1343    </xsl:variable>
1344   
1345    <xsl:value-of select="$point/@lon + $cos_angle"/>, <xsl:value-of select="$point/@lat + $sin_angle"/>
1346  </xsl:template>
1347 
1348  <!-- Constants for trig templates -->
1349  <xsl:variable name="pi" select="3.1415926535897"/>
1350  <xsl:variable name="halfPi" select="$pi div 2"/>
1351  <xsl:variable name="twicePi" select="$pi*2"/>
1352
1353  <xsl:template name="sin">
1354    <xsl:param name="angle" />
1355    <xsl:param name="precision" select="0.00000001"/>
1356
1357    <xsl:variable name="y">
1358      <xsl:choose>
1359        <xsl:when test="not(0 &lt;= $angle and $twicePi > $angle)">
1360          <xsl:call-template name="cutIntervals">
1361            <xsl:with-param name="length" select="$twicePi"/>
1362            <xsl:with-param name="angle" select="$angle"/>
1363          </xsl:call-template>
1364        </xsl:when>
1365        <xsl:otherwise>
1366          <xsl:value-of select="$angle"/>
1367        </xsl:otherwise>
1368      </xsl:choose>
1369    </xsl:variable>
1370
1371    <xsl:call-template name="sineIter">
1372      <xsl:with-param name="angle2" select="$y*$y"/>
1373      <xsl:with-param name="res" select="$y"/>
1374      <xsl:with-param name="elem" select="$y"/>
1375      <xsl:with-param name="n" select="1"/>
1376      <xsl:with-param name="precision" select="$precision" />
1377    </xsl:call-template>
1378  </xsl:template>
1379
1380  <xsl:template name="sineIter">
1381    <xsl:param name="angle2" />
1382    <xsl:param name="res" />
1383    <xsl:param name="elem" />
1384    <xsl:param name="n" />
1385    <xsl:param name="precision"/>
1386
1387    <xsl:variable name="nextN" select="$n+2" />
1388    <xsl:variable name="newElem" select="-$elem*$angle2 div ($nextN*($nextN - 1))" />
1389    <xsl:variable name="newResult" select="$res + $newElem" />
1390    <xsl:variable name="diffResult" select="$newResult - $res" />
1391
1392    <xsl:choose>
1393      <xsl:when test="$diffResult > $precision or $diffResult &lt; -$precision">
1394        <xsl:call-template name="sineIter">
1395          <xsl:with-param name="angle2" select="$angle2" />
1396          <xsl:with-param name="res" select="$newResult" />
1397          <xsl:with-param name="elem" select="$newElem" />
1398          <xsl:with-param name="n" select="$nextN" />
1399          <xsl:with-param name="precision" select="$precision" />
1400        </xsl:call-template>
1401      </xsl:when>
1402      <xsl:otherwise>
1403        <xsl:value-of select="$newResult"/>
1404      </xsl:otherwise>
1405    </xsl:choose>
1406  </xsl:template>
1407
1408  <xsl:template name="cutIntervals">
1409    <xsl:param name="length"/>
1410    <xsl:param name="angle"/>
1411
1412    <xsl:variable name="vsign">
1413      <xsl:choose>
1414        <xsl:when test="$angle >= 0">1</xsl:when>
1415        <xsl:otherwise>-1</xsl:otherwise>
1416      </xsl:choose>
1417    </xsl:variable>
1418    <xsl:variable name="vdiff" select="$length*floor($angle div $length) -$angle"/> 
1419    <xsl:choose>
1420      <xsl:when test="$vdiff*$angle > 0">
1421        <xsl:value-of select="$vsign*$vdiff"/>
1422      </xsl:when>
1423      <xsl:otherwise>
1424        <xsl:value-of select="-$vsign*$vdiff"/>
1425      </xsl:otherwise>
1426    </xsl:choose>
1427  </xsl:template>
1428
1429  <xsl:template name="cos">
1430    <xsl:param name="angle" />
1431    <xsl:param name="precision" select="0.00000001"/>
1432
1433    <xsl:call-template name="sin">
1434      <xsl:with-param name="angle" select="$halfPi - $angle" />
1435      <xsl:with-param name="precision" select="$precision" />
1436    </xsl:call-template>
1437  </xsl:template>
1438
1439  <!-- Find the point halfway into the polygon along the line $vertex-$linepoint -->
1440  <xsl:template name="areacenterFindPointForVertex">
1441    <xsl:param name="vertex" />
1442    <xsl:param name="edgestart" />
1443    <xsl:param name="linepoint_x" />
1444    <xsl:param name="linepoint_y" />
1445    <xsl:param name="holerelation" />
1446    <xsl:param name="intersectioncount_on" select="0" /><!-- Number of intersections. Only counts those on segment vertex-linepoint -->
1447    <xsl:param name="nearest_on_x" />
1448    <xsl:param name="nearest_on_y" />
1449    <xsl:param name="nearest_on_dist" select="'NaN'" />
1450    <xsl:param name="nearest_off_x" />
1451    <xsl:param name="nearest_off_y" />
1452    <xsl:param name="nearest_off_dist" select="'NaN'" />
1453
1454    <xsl:choose>
1455      <!-- If there are no more vertices we don't have a second point for the edge, and are finished -->
1456      <xsl:when test="$edgestart/following-sibling::nd[1]">
1457        <xsl:variable name="edgeend" select="$edgestart/following-sibling::nd[1]" />
1458
1459        <!-- Get the intersection point between the line $vertex-$linepoint and $edgestart-$edgeend -->
1460        <xsl:variable name="intersection">
1461          <xsl:choose>
1462            <xsl:when test="$vertex/@id = $edgestart/@ref or $vertex/@id = $edgeend/@ref">
1463              <!-- Vertex is one of the points in edge, skip -->
1464              NoIntersection
1465            </xsl:when>
1466            <xsl:otherwise>     
1467              <xsl:call-template name="areacenterLinesIntersection">
1468                <xsl:with-param name="x1" select="$vertex/@lon" />
1469                <xsl:with-param name="y1" select="$vertex/@lat" />
1470                <xsl:with-param name="x2" select="$linepoint_x" />
1471                <xsl:with-param name="y2" select="$linepoint_y" />
1472                <xsl:with-param name="x3" select="key('nodeById', $edgestart/@ref)/@lon" />
1473                <xsl:with-param name="y3" select="key('nodeById', $edgestart/@ref)/@lat" />
1474                <xsl:with-param name="x4" select="key('nodeById', $edgeend/@ref)/@lon" />
1475                <xsl:with-param name="y4" select="key('nodeById', $edgeend/@ref)/@lat" />
1476              </xsl:call-template>
1477            </xsl:otherwise>
1478          </xsl:choose>
1479        </xsl:variable>
1480
1481        <!-- Haul ix, iy, ua and ub out of the csv -->
1482        <xsl:variable name="ix" select="substring-before($intersection, ',')" />
1483        <xsl:variable name="iy" select="substring-before(substring-after($intersection, ','), ',')" />
1484        <xsl:variable name="ua" select="substring-before(substring-after(substring-after($intersection, ','), ','), ',')" />
1485        <xsl:variable name="ub" select="substring-after(substring-after(substring-after($intersection, ','), ','), ',')" />
1486
1487        <!-- A) Is there actually an intersection? B) Is it on edge? -->
1488        <xsl:choose>
1489          <xsl:when test="$intersection != 'NoIntersection' and $ub &gt; 0 and $ub &lt;= 1">
1490            <xsl:variable name="distance">
1491              <xsl:call-template name="areacenterPointDistance">
1492                <xsl:with-param name="x1" select="$vertex/@lon" />
1493                <xsl:with-param name="y1" select="$vertex/@lat" />
1494                <xsl:with-param name="x2" select="$ix" />
1495                <xsl:with-param name="y2" select="$iy" />
1496              </xsl:call-template>
1497            </xsl:variable>
1498
1499            <!-- Is intersection on the segment $vertex-$linepoint, or on the other side of $vertex? -->
1500            <xsl:variable name="isOnSegment">
1501              <xsl:if test="$ua &gt;= 0">Yes</xsl:if>
1502            </xsl:variable>
1503           
1504            <xsl:variable name="isNewNearestOn">
1505              <xsl:if test="$isOnSegment = 'Yes' and ( $nearest_on_dist = 'NaN' or $distance &lt; $nearest_on_dist )">Yes</xsl:if>
1506            </xsl:variable>
1507           
1508            <xsl:variable name="isNewNearestOff">
1509              <xsl:if test="$isOnSegment != 'Yes' and ( $nearest_off_dist = 'NaN' or $distance &lt; $nearest_off_dist )">Yes</xsl:if>
1510            </xsl:variable>
1511
1512            <xsl:call-template name="areacenterFindPointForVertex">
1513              <xsl:with-param name="vertex" select="$vertex" />
1514              <xsl:with-param name="linepoint_x" select="$linepoint_x" />
1515              <xsl:with-param name="linepoint_y" select="$linepoint_y" />
1516              <xsl:with-param name="edgestart" select="$edgeend" />
1517              <xsl:with-param name="holerelation" select="$holerelation" />
1518              <xsl:with-param name="intersectioncount_on" select="$intersectioncount_on + number(boolean($isOnSegment = 'Yes'))" />
1519              <xsl:with-param name="nearest_on_dist"> <xsl:choose>
1520                <xsl:when test="$isNewNearestOn = 'Yes'"> <xsl:value-of select="$distance" /> </xsl:when>
1521                <xsl:otherwise> <xsl:value-of select="$nearest_on_dist" /> </xsl:otherwise>
1522              </xsl:choose> </xsl:with-param>
1523              <xsl:with-param name="nearest_on_x"> <xsl:choose>
1524                <xsl:when test="$isNewNearestOn = 'Yes'"> <xsl:value-of select="$ix" /> </xsl:when>
1525                <xsl:otherwise> <xsl:value-of select="$nearest_on_x" /> </xsl:otherwise>
1526              </xsl:choose> </xsl:with-param>
1527              <xsl:with-param name="nearest_on_y"> <xsl:choose>
1528                <xsl:when test="$isNewNearestOn = 'Yes'"> <xsl:value-of select="$iy" /> </xsl:when>
1529                <xsl:otherwise> <xsl:value-of select="$nearest_on_y" /> </xsl:otherwise>
1530              </xsl:choose> </xsl:with-param>
1531              <xsl:with-param name="nearest_off_dist"> <xsl:choose>
1532                <xsl:when test="$isNewNearestOff = 'Yes'"> <xsl:value-of select="$distance" /> </xsl:when>
1533                <xsl:otherwise> <xsl:value-of select="$nearest_off_dist" /> </xsl:otherwise>
1534              </xsl:choose> </xsl:with-param>
1535              <xsl:with-param name="nearest_off_x"> <xsl:choose>
1536                <xsl:when test="$isNewNearestOff = 'Yes'"> <xsl:value-of select="$ix" /> </xsl:when>
1537                <xsl:otherwise> <xsl:value-of select="$nearest_off_x" /> </xsl:otherwise>
1538              </xsl:choose> </xsl:with-param>
1539              <xsl:with-param name="nearest_off_y"> <xsl:choose>
1540                <xsl:when test="$isNewNearestOff = 'Yes'"> <xsl:value-of select="$iy" /> </xsl:when>
1541                <xsl:otherwise> <xsl:value-of select="$nearest_off_y" /> </xsl:otherwise>
1542              </xsl:choose> </xsl:with-param>
1543            </xsl:call-template>
1544          </xsl:when>
1545          <!-- No intersection, just go on to next edge -->
1546          <xsl:otherwise>
1547            <xsl:call-template name="areacenterFindPointForVertex">
1548              <xsl:with-param name="vertex" select="$vertex" />
1549              <xsl:with-param name="linepoint_x" select="$linepoint_x" />
1550              <xsl:with-param name="linepoint_y" select="$linepoint_y" />
1551              <xsl:with-param name="edgestart" select="$edgeend" />
1552              <xsl:with-param name="holerelation" select="$holerelation" />
1553              <xsl:with-param name="intersectioncount_on" select="$intersectioncount_on" />
1554              <xsl:with-param name="nearest_on_dist" select="$nearest_on_dist" />
1555              <xsl:with-param name="nearest_on_x" select="$nearest_on_x" />
1556              <xsl:with-param name="nearest_on_y" select="$nearest_on_y" />
1557              <xsl:with-param name="nearest_off_dist" select="$nearest_off_dist" />
1558              <xsl:with-param name="nearest_off_x" select="$nearest_off_x" />
1559              <xsl:with-param name="nearest_off_y" select="$nearest_off_y" />
1560            </xsl:call-template>
1561          </xsl:otherwise>
1562        </xsl:choose>
1563      </xsl:when>
1564      <!-- Is there a hole in the polygon, and were we working on the outer one? Then we start edge detection against the hole. -->
1565      <xsl:when test="$holerelation and
1566                      $holerelation/member[@ref = $edgestart/../@id][@role='outer']">
1567        <xsl:variable name="nextnode" select="key('wayById', $holerelation/member[@type='way'][@role='inner'][1]/@ref)/nd[1]"/>
1568        <xsl:call-template name="areacenterFindPointForVertex">
1569          <xsl:with-param name="vertex" select="$vertex" />
1570          <xsl:with-param name="linepoint_x" select="$linepoint_x" />
1571          <xsl:with-param name="linepoint_y" select="$linepoint_y" />
1572          <xsl:with-param name="edgestart" select="$nextnode" />
1573          <xsl:with-param name="holerelation" select="$holerelation" />
1574          <xsl:with-param name="intersectioncount_on" select="$intersectioncount_on" />
1575          <xsl:with-param name="nearest_on_dist" select="$nearest_on_dist" />
1576          <xsl:with-param name="nearest_on_x" select="$nearest_on_x" />
1577          <xsl:with-param name="nearest_on_y" select="$nearest_on_y" />
1578          <xsl:with-param name="nearest_off_dist" select="$nearest_off_dist" />
1579          <xsl:with-param name="nearest_off_x" select="$nearest_off_x" />
1580          <xsl:with-param name="nearest_off_y" select="$nearest_off_y" />
1581        </xsl:call-template>
1582      </xsl:when>
1583      <!-- Is there a hole in the polygon, and were we working working on one of the inner ones? Then go to the next hole, if there is one -->
1584      <xsl:when test="$holerelation and
1585                      $holerelation/member[@ref = $edgestart/../@id][@type='way'][tag[@k='role' and @v='inner']]/following-sibling::member[tag[@k='role' and @v='inner']]">
1586        <xsl:variable name="nextnode" select="key('wayById', $holerelation/member[@ref = $edgestart/../@id][@type='way'][tag[@k='role' and @v='inner']]/following-sibling::member[tag[@k='role' and @v='inner']]/@ref)/nd[1]"/>
1587        <xsl:call-template name="areacenterFindPointForVertex">
1588          <xsl:with-param name="vertex" select="$vertex" />
1589          <xsl:with-param name="linepoint_x" select="$linepoint_x" />
1590          <xsl:with-param name="linepoint_y" select="$linepoint_y" />
1591          <xsl:with-param name="edgestart" select="$nextnode" />
1592          <xsl:with-param name="holerelation" select="$holerelation" />
1593          <xsl:with-param name="intersectioncount_on" select="$intersectioncount_on" />
1594          <xsl:with-param name="nearest_on_dist" select="$nearest_on_dist" />
1595          <xsl:with-param name="nearest_on_x" select="$nearest_on_x" />
1596          <xsl:with-param name="nearest_on_y" select="$nearest_on_y" />
1597          <xsl:with-param name="nearest_off_dist" select="$nearest_off_dist" />
1598          <xsl:with-param name="nearest_off_x" select="$nearest_off_x" />
1599          <xsl:with-param name="nearest_off_y" select="$nearest_off_y" />
1600        </xsl:call-template>
1601      </xsl:when>
1602      <xsl:otherwise>
1603        <!-- No more edges, return point -->
1604        <xsl:choose>
1605          <xsl:when test="$intersectioncount_on mod 2 = 0">
1606            <xsl:value-of select="$nearest_off_x"/>,<xsl:value-of select="$nearest_off_y"/>
1607          </xsl:when>
1608          <xsl:otherwise>
1609            <xsl:value-of select="$nearest_on_x"/>,<xsl:value-of select="$nearest_on_y"/>
1610          </xsl:otherwise>
1611        </xsl:choose>
1612      </xsl:otherwise>
1613    </xsl:choose>
1614  </xsl:template>
1615
1616  <!--
1617      Finds intersection point between lines x1,y1 -> x2,y2 and x3,y3 -> x4,y4.
1618      Returns a comma-separated list of x,y,ua,ub or NoIntersection if the lines do not intersect
1619  -->
1620  <xsl:template name="areacenterLinesIntersection">
1621    <xsl:param name="x1" />
1622    <xsl:param name="y1" />
1623    <xsl:param name="x2" />
1624    <xsl:param name="y2" />
1625    <xsl:param name="x3" />
1626    <xsl:param name="y3" />
1627    <xsl:param name="x4" />
1628    <xsl:param name="y4" />
1629
1630    <xsl:variable name="denom" select="(( $y4 - $y3 ) * ( $x2 - $x1 )) -
1631                                       (( $x4 - $x3 ) * ( $y2 - $y1 ))" />
1632    <xsl:variable name="nume_a" select="(( $x4 - $x3 ) * ( $y1 - $y3 )) -
1633                                        (( $y4 - $y3 ) * ( $x1 - $x3 ))" />
1634    <xsl:variable name="nume_b" select="(( $x2 - $x1 ) * ( $y1 - $y3 )) -
1635                                        (( $y2 - $y1 ) * ( $x1 - $x3 ))" />
1636
1637    <xsl:choose>
1638      <xsl:when test="$denom = 0">
1639        NoIntersection
1640      </xsl:when>
1641      <xsl:otherwise>
1642        <xsl:variable name="ua" select="$nume_a div $denom" />
1643        <xsl:variable name="ub" select="$nume_b div $denom" />
1644
1645        <!-- x,y,ua,ub -->
1646        <xsl:value-of select="$x1 + $ua * ($x2 - $x1)" />,<xsl:value-of select="$y1 + $ua * ($y2 - $y1)" />,<xsl:value-of select="$ua" />,<xsl:value-of select="$ub" />
1647      </xsl:otherwise>
1648    </xsl:choose>
1649  </xsl:template>
1650
1651  <!-- Distance between two points -->
1652  <xsl:template name="areacenterPointDistance">
1653    <xsl:param name="x1" />
1654    <xsl:param name="y1" />
1655    <xsl:param name="x2" />
1656    <xsl:param name="y2" />
1657
1658    <!-- sqrt( ($x2 - $x1)**2 + ($y2 - $y1)**2 ) -->
1659    <xsl:call-template name="sqrt">
1660      <xsl:with-param name="num" select="($x2*$x2 - $x2*$x1 - $x1*$x2 + $x1*$x1) + ($y2*$y2 - $y2*$y1 - $y1*$y2 + $y1*$y1)" />
1661    </xsl:call-template>
1662  </xsl:template>
1663
1664  <xsl:template name="sqrt">
1665    <xsl:param name="num" select="0"/>  <!-- The number you want to find the
1666                                             square root of -->
1667    <xsl:param name="try" select="1"/>  <!-- The current 'try'.  This is used
1668                                             internally. -->
1669    <xsl:param name="iter" select="1"/> <!-- The current iteration, checked
1670                                             against maxiter to limit loop count -->
1671    <xsl:param name="maxiter" select="10"/>  <!-- Set this up to insure
1672against infinite loops -->
1673   
1674    <!-- This template was written by Nate Austin using Sir Isaac Newton's
1675         method of finding roots -->
1676   
1677    <xsl:choose>
1678      <xsl:when test="$try * $try = $num or $iter &gt; $maxiter">
1679        <xsl:value-of select="$try"/>
1680      </xsl:when>
1681      <xsl:otherwise>
1682        <xsl:call-template name="sqrt">
1683          <xsl:with-param name="num" select="$num"/>
1684          <xsl:with-param name="try" select="$try - (($try * $try - $num) div
1685                                             (2 * $try))"/>
1686          <xsl:with-param name="iter" select="$iter + 1"/>
1687          <xsl:with-param name="maxiter" select="$maxiter"/>
1688        </xsl:call-template>
1689      </xsl:otherwise>
1690    </xsl:choose>
1691  </xsl:template>
1692
1693  <!-- Returns the medium value of all the points -->
1694  <xsl:template name="areacenterMediumOfPoints">
1695    <xsl:param name="points" />
1696    <xsl:param name="total_x" select="0" />
1697    <xsl:param name="total_y" select="0" />
1698    <xsl:param name="count" select="0" />
1699
1700    <xsl:variable name="point" select="substring-before($points, ';')" />
1701
1702    <xsl:choose>
1703      <xsl:when test="string-length($point) &gt; 0">
1704        <xsl:variable name="x" select="substring-before($point, ',')" />
1705        <xsl:variable name="y" select="substring-after($point, ',')" />
1706
1707        <xsl:call-template name="areacenterMediumOfPoints">
1708          <xsl:with-param name="points" select="substring-after($points, ';')" />
1709          <xsl:with-param name="total_x" select="$total_x + $x" />
1710          <xsl:with-param name="total_y" select="$total_y + $y" />
1711          <xsl:with-param name="count" select="$count + 1" />
1712        </xsl:call-template>
1713      </xsl:when>
1714      <xsl:otherwise>
1715        <xsl:value-of select="$total_x div $count" />, <xsl:value-of select="$total_y div $count" />
1716      </xsl:otherwise>
1717    </xsl:choose>
1718  </xsl:template>
1719
1720  <!-- Returns the coordinates of the point in points that's nearest x,y -->
1721  <xsl:template name="areacenterNearestPoint">
1722    <xsl:param name="points" />
1723    <xsl:param name="x" />
1724    <xsl:param name="y" />
1725    <xsl:param name="nearest_x" />
1726    <xsl:param name="nearest_y" />
1727    <xsl:param name="nearest_dist" select="'NaN'" />
1728
1729    <xsl:variable name="point" select="substring-before($points, ';')" />
1730
1731    <xsl:choose>
1732      <xsl:when test="string-length($point) &gt; 0"> 
1733        <xsl:variable name="point_x" select="substring-before($point, ',')" />
1734        <xsl:variable name="point_y" select="substring-after($point, ',')" />
1735       
1736        <xsl:variable name="distance">
1737          <xsl:call-template name="areacenterPointDistance">
1738            <xsl:with-param name="x1" select="$x" />
1739            <xsl:with-param name="y1" select="$y" />
1740            <xsl:with-param name="x2" select="$point_x" />
1741            <xsl:with-param name="y2" select="$point_y" />
1742          </xsl:call-template>
1743        </xsl:variable>
1744
1745        <xsl:variable name="isNewNearest" select="$nearest_dist = 'NaN' or $distance &lt; $nearest_dist" />
1746
1747        <xsl:call-template name="areacenterNearestPoint">
1748          <xsl:with-param name="points" select="substring-after($points, ';')" />
1749          <xsl:with-param name="x" select="$x" />
1750          <xsl:with-param name="y" select="$y" />
1751          <xsl:with-param name="nearest_dist"><xsl:choose>
1752            <xsl:when test="$isNewNearest"><xsl:value-of select="$distance" /></xsl:when>
1753            <xsl:otherwise><xsl:value-of select="$nearest_dist" /></xsl:otherwise>
1754          </xsl:choose></xsl:with-param>
1755          <xsl:with-param name="nearest_x"><xsl:choose>
1756            <xsl:when test="$isNewNearest"><xsl:value-of select="$point_x" /></xsl:when>
1757            <xsl:otherwise><xsl:value-of select="$nearest_x" /></xsl:otherwise>
1758          </xsl:choose></xsl:with-param>
1759          <xsl:with-param name="nearest_y"><xsl:choose>
1760            <xsl:when test="$isNewNearest"><xsl:value-of select="$point_y" /></xsl:when>
1761            <xsl:otherwise><xsl:value-of select="$nearest_y" /></xsl:otherwise>
1762          </xsl:choose></xsl:with-param>
1763        </xsl:call-template>
1764      </xsl:when>
1765      <xsl:otherwise>
1766        <xsl:value-of select="$nearest_x" />, <xsl:value-of select="$nearest_y" />
1767      </xsl:otherwise>
1768    </xsl:choose>
1769  </xsl:template>
1770
1771  <!-- Process a <text> instruction -->
1772  <xsl:template match="text">
1773    <xsl:param name="elements"/>
1774
1775    <!-- This is the instruction that is currently being processed -->
1776    <xsl:variable name="instruction" select="."/>
1777
1778    <!-- Select all <node> elements that have a key that matches the k attribute of the text instruction -->
1779    <xsl:for-each select="$elements[name()='node'][tag[@k=$instruction/@k]]">
1780      <xsl:call-template name="renderText">
1781        <xsl:with-param name="instruction" select="$instruction"/>
1782      </xsl:call-template>
1783    </xsl:for-each>
1784
1785    <!-- Select all <way> elements -->
1786    <xsl:apply-templates select="$elements[name()='way']" mode="textPath">
1787      <xsl:with-param name="instruction" select="$instruction"/>
1788    </xsl:apply-templates>
1789  </xsl:template>
1790
1791
1792  <!-- Suppress output of any unhandled elements -->
1793  <xsl:template match="*" mode="textPath"/>
1794
1795
1796  <!-- Render textPaths for a way -->
1797  <xsl:template match="way" mode="textPath">
1798    <xsl:param name="instruction"/>
1799
1800    <!-- The current <way> element -->
1801    <xsl:variable name="way" select="."/>
1802
1803    <!-- DODI: !!!WORKAROUND!!! no text for one node ways-->
1804    <xsl:if test="count($way/nd) &gt; 1">
1805      <xsl:variable name='text'>
1806        <xsl:choose>
1807          <xsl:when test='$instruction/@k'>
1808            <xsl:value-of select='tag[@k=$instruction/@k]/@v'/>
1809          </xsl:when>
1810          <xsl:otherwise>
1811            <xsl:apply-templates select='$instruction' mode='textFormat'>
1812              <xsl:with-param name='way' select='$way'/>
1813            </xsl:apply-templates>
1814          </xsl:otherwise>
1815        </xsl:choose>
1816      </xsl:variable>
1817
1818      <xsl:if test='string($text)'>
1819
1820        <xsl:variable name="pathDirection">
1821          <xsl:choose>
1822            <!-- Manual override, reverse direction -->
1823            <xsl:when test="tag[@k='name_direction']/@v='-1' or tag[@k='osmarender:nameDirection']/@v='-1'">reverse</xsl:when>
1824            <!-- Manual override, normal direction -->
1825            <xsl:when test="tag[@k='name_direction']/@v='1' or tag[@k='osmarender:nameDirection']/@v='1'">normal</xsl:when>
1826            <!-- Automatic, reverse direction -->
1827            <xsl:when test="(key('nodeById',$way/nd[1]/@ref)/@lon &gt; key('nodeById',$way/nd[last()]/@ref)/@lon)">reverse</xsl:when>
1828            <!-- Automatic, normal direction -->
1829            <xsl:otherwise>normal</xsl:otherwise>
1830          </xsl:choose>
1831        </xsl:variable>
1832
1833        <xsl:variable name="wayPath">
1834          <xsl:choose>
1835            <!-- Normal -->
1836            <xsl:when test='$pathDirection="normal"'>
1837              <xsl:value-of select="concat('way_normal_',@id)"/>
1838            </xsl:when>
1839            <!-- Reverse -->
1840            <xsl:otherwise>
1841              <xsl:value-of select="concat('way_reverse_',@id)"/>
1842            </xsl:otherwise>
1843          </xsl:choose>
1844        </xsl:variable>
1845
1846        <xsl:call-template name="renderTextPath">
1847          <xsl:with-param name="instruction" select="$instruction"/>
1848          <xsl:with-param name="pathId" select="$wayPath"/>
1849          <xsl:with-param name="pathDirection" select="$pathDirection"/>
1850          <xsl:with-param name="text" select="$text"/>
1851        </xsl:call-template>
1852      </xsl:if>
1853    </xsl:if>
1854  </xsl:template>
1855
1856  <!-- Process extended form of text instruction -->
1857  <xsl:template match='text' mode='textFormat'>
1858    <xsl:param name='way'/>
1859
1860    <xsl:apply-templates mode='textFormat'>
1861      <xsl:with-param name='way' select='$way'/>
1862    </xsl:apply-templates>
1863  </xsl:template>
1864
1865
1866  <!-- Substitute a tag in a text instruction -->
1867  <xsl:template match='text/tag' mode='textFormat'>
1868    <xsl:param name='way'/>
1869
1870    <xsl:variable name='key' select='@k'/>
1871    <xsl:variable name='value'>
1872      <xsl:choose>
1873        <xsl:when test='$key="osm:user"'>
1874          <xsl:value-of select='$way/@user'/>
1875        </xsl:when>
1876        <xsl:when test='$key="osm:timestamp"'>
1877          <xsl:value-of select='$way/@timestamp'/>
1878        </xsl:when>
1879        <xsl:when test='$key="osm:id"'>
1880          <xsl:value-of select='$way/@id'/>
1881        </xsl:when>
1882        <xsl:otherwise>
1883          <xsl:value-of select='$way/tag[@k=$key]/@v'/>
1884        </xsl:otherwise>
1885      </xsl:choose>
1886    </xsl:variable>
1887    <xsl:choose>
1888      <xsl:when test='string($value)'>
1889        <xsl:value-of select='$value'/>
1890      </xsl:when>
1891      <xsl:otherwise>
1892        <xsl:value-of select='@default'/>
1893      </xsl:otherwise>
1894    </xsl:choose>
1895  </xsl:template>
1896
1897
1898
1899  <!-- Generate a way path for the current way element -->
1900  <xsl:template name="generateWayPaths">
1901    <!-- DODI: !!!WORKAROUND!!! skip one node ways -->
1902    <xsl:if test="count(nd) &gt; 1">
1903
1904      <!-- Generate a normal way path -->
1905      <xsl:variable name="pathWayNormal">
1906        <xsl:call-template name="generateWayPathNormal"/>
1907      </xsl:variable>
1908      <xsl:if test="$pathWayNormal!=''">
1909        <path id="way_normal_{@id}" d="{$pathWayNormal}"/>
1910      </xsl:if>
1911
1912      <!-- Generate a normal way path as area -->
1913      <!-- DODI: !!!WORKAROUND!!! added to generate "area for all ways, yes it is very dirty... but -->
1914      <!-- DODI: removed because of line2curves.pl duplicate node detection problem -->
1915      <!-- <xsl:variable name="pathArea">
1916      <xsl:call-template name="generateAreaPath"/>
1917    </xsl:variable>
1918    <path id="area_{@id}" d="{$pathArea}"/> -->
1919      <!-- Generate a reverse way path (if needed) -->
1920      <xsl:variable name="pathWayReverse">
1921        <xsl:choose>
1922          <!-- Manual override, reverse direction -->
1923          <xsl:when test="tag[@k='name_direction']/@v='-1' or tag[@k='osmarender:nameDirection']/@v='-1'">
1924            <xsl:call-template name="generateWayPathReverse"/>
1925          </xsl:when>
1926          <!-- Manual override, normal direction -->
1927          <xsl:when test="tag[@k='name_direction']/@v='1' or tag[@k='osmarender:nameDirection']/@v='1'">
1928            <!-- Generate nothing -->
1929          </xsl:when>
1930          <!-- Automatic, reverse direction -->
1931          <xsl:when test="(key('nodeById',nd[1]/@ref)/@lon &gt; key('nodeById',nd[last()]/@ref)/@lon)">
1932            <xsl:call-template name="generateWayPathReverse"/>
1933          </xsl:when>
1934        </xsl:choose>
1935      </xsl:variable>
1936      <xsl:if test="$pathWayReverse!=''">
1937        <path id="way_reverse_{@id}" d="{$pathWayReverse}"/>
1938      </xsl:if>
1939
1940      <!-- Generate the start, middle and end paths needed for smart-linecaps (TM). -->
1941      <xsl:variable name="pathWayStart">
1942        <xsl:call-template name="generatePathWayStart"/>
1943      </xsl:variable>
1944      <path id="way_start_{@id}" d="{$pathWayStart}"/>
1945
1946      <xsl:if test="count(nd) &gt; 1">
1947        <xsl:variable name="pathWayMid">
1948          <xsl:call-template name="generatePathWayMid"/>
1949        </xsl:variable>
1950        <path id="way_mid_{@id}" d="{$pathWayMid}"/>
1951      </xsl:if>
1952
1953      <xsl:variable name="pathWayEnd">
1954        <xsl:call-template name="generatePathWayEnd"/>
1955      </xsl:variable>
1956      <path id="way_end_{@id}" d="{$pathWayEnd}"/>
1957    </xsl:if >
1958  </xsl:template>
1959
1960
1961  <!-- Generate a normal way path -->
1962  <xsl:template name="generateWayPathNormal">
1963    <xsl:for-each select="nd[key('nodeById',@ref) ]">
1964      <xsl:choose>
1965        <xsl:when test="position()=1">
1966          <xsl:call-template name="moveToNode">
1967            <xsl:with-param name="node" select="key('nodeById',@ref)"/>
1968          </xsl:call-template>
1969        </xsl:when>
1970        <xsl:otherwise>
1971          <xsl:call-template name="lineToNode">
1972            <xsl:with-param name="node" select="key('nodeById',@ref)"/>
1973          </xsl:call-template>
1974        </xsl:otherwise>
1975      </xsl:choose>
1976    </xsl:for-each>
1977  </xsl:template>
1978
1979
1980  <!-- Generate a reverse way path -->
1981  <xsl:template name="generateWayPathReverse">
1982    <xsl:for-each select="nd[key('nodeById',@ref)]">
1983      <xsl:sort select="position()" data-type="number" order="descending"/>
1984      <xsl:choose>
1985        <xsl:when test="position()=1">
1986          <xsl:call-template name="moveToNode">
1987            <xsl:with-param name="node" select="key('nodeById',@ref)"/>
1988          </xsl:call-template>
1989        </xsl:when>
1990        <xsl:otherwise>
1991          <xsl:call-template name="lineToNode">
1992            <xsl:with-param name="node" select="key('nodeById',@ref)"/>
1993          </xsl:call-template>
1994        </xsl:otherwise>
1995      </xsl:choose>
1996    </xsl:for-each>
1997  </xsl:template>
1998
1999
2000  <!-- These template generates two paths, one for each end of a way.  The line to the first node is cut in two so that the join
2001         between the two paths is not at an angle.  -->
2002  <xsl:template name="generatePathWayStart">
2003    <xsl:call-template name="moveToNode">
2004      <xsl:with-param name="node" select="key('nodeById',nd[1]/@ref)"/>
2005    </xsl:call-template>
2006    <xsl:call-template name="lineToMidpointPlus">
2007      <xsl:with-param name="fromNode" select="key('nodeById',nd[1]/@ref)"/>
2008      <xsl:with-param name="toNode" select="key('nodeById',nd[2]/@ref)"/>
2009    </xsl:call-template>
2010  </xsl:template>
2011
2012
2013  <xsl:template name="generatePathWayEnd">
2014    <xsl:call-template name="moveToNode">
2015      <xsl:with-param name="node" select="key('nodeById',nd[position()=last()]/@ref)"/>
2016    </xsl:call-template>
2017    <xsl:call-template name="lineToMidpointMinus">
2018      <xsl:with-param name="fromNode" select="key('nodeById',nd[position()=(last()-1)]/@ref)"/>
2019      <xsl:with-param name="toNode" select="key('nodeById',nd[position()=last()]/@ref)"/>
2020    </xsl:call-template>
2021  </xsl:template>
2022
2023  <xsl:template name="generatePathWayMid">
2024    <xsl:for-each select="nd[key('nodeById',@ref)]">
2025      <xsl:choose>
2026        <xsl:when test="position()=1">
2027          <xsl:call-template name="moveToMidpointPlus">
2028            <xsl:with-param name="fromNode" select="key('nodeById',@ref)"/>
2029            <xsl:with-param name="toNode" select="key('nodeById',following-sibling::nd[1]/@ref)"/>
2030          </xsl:call-template>
2031        </xsl:when>
2032        <xsl:when test="position()=last()">
2033          <xsl:call-template name="lineToMidpointMinus">
2034            <xsl:with-param name="fromNode" select="key('nodeById',preceding-sibling::nd[1]/@ref)"/>
2035            <xsl:with-param name="toNode" select="key('nodeById',@ref)"/>
2036          </xsl:call-template>
2037        </xsl:when>
2038        <xsl:otherwise>
2039          <xsl:call-template name="lineToNode">
2040            <xsl:with-param name="node" select="key('nodeById',@ref)"/>
2041          </xsl:call-template>
2042        </xsl:otherwise>
2043      </xsl:choose>
2044    </xsl:for-each>
2045  </xsl:template>
2046
2047  <!-- Generate an area path for the current way or area element -->
2048  <xsl:template name="generateAreaPath">
2049    <xsl:variable name='relation' select="key('relationByWay',@id)[tag[@k='type' and @v='multipolygon']]"/>
2050    <xsl:choose>
2051      <xsl:when test='$relation'>
2052
2053        <!-- DODI: handling mulitpolygons: draw area only once
2054                   ways is a part of a multipolygon relation so we need process all members-->
2055        <!-- Bobkare: Changed to use the member with role=outer instead of the search for first member, which gave me some errors -->
2056        <xsl:variable name='outerway' select="$relation/member[@type='way'][@role='outer']/@ref"/>
2057        <xsl:if test='$outerway=@id'>
2058          <xsl:message>
2059            <xsl:value-of select='$relation/@id'/>
2060          </xsl:message>
2061          <xsl:for-each select="$relation/member[@type='way'][key('wayById', @ref)]">
2062            <xsl:call-template name='generateAreaSubPath'>
2063              <xsl:with-param name='way' select="key('wayById',@ref)"/>
2064              <xsl:with-param name='position' select="position()"/>
2065            </xsl:call-template>
2066          </xsl:for-each>
2067          <xsl:text>Z</xsl:text>
2068        </xsl:if>
2069
2070      </xsl:when>
2071      <xsl:otherwise>
2072        <xsl:call-template name='generateAreaSubPath'>
2073          <xsl:with-param name='way' select='.'/>
2074          <xsl:with-param name='position' select="'1'"/>
2075        </xsl:call-template>
2076        <xsl:text>Z</xsl:text>
2077      </xsl:otherwise>
2078    </xsl:choose>
2079  </xsl:template>
2080
2081
2082  <xsl:template name='generateAreaSubPath'>
2083    <xsl:param name='way'/>
2084    <xsl:param name='position'/>
2085
2086    <xsl:variable name='loop' select='$way/nd[1]/@ref=$way/nd[last()]/@ref'/>
2087    <xsl:message>
2088      WayId: <xsl:value-of select='$way/@id'/>
2089      Loop: <xsl:value-of select='$loop'/>
2090      Loop: <xsl:value-of select='$way/nd[1]/@ref'/>
2091      Loop: <xsl:value-of select='$way/nd[last()]/@ref'/>
2092    </xsl:message>
2093    <xsl:for-each select="$way/nd[key('nodeById',@ref)]">
2094      <xsl:choose>
2095        <xsl:when test="position()=1 and $loop">
2096          <xsl:if test='not($position=1)'>
2097            <xsl:text>Z</xsl:text>
2098          </xsl:if>
2099          <xsl:call-template name="moveToNode">
2100            <xsl:with-param name="node" select="key('nodeById',@ref)"/>
2101          </xsl:call-template>
2102        </xsl:when>
2103        <xsl:when test="$position=1 and position()=1 and not($loop=1)">
2104          <xsl:call-template name="moveToNode">
2105            <xsl:with-param name="node" select="key('nodeById',@ref)"/>
2106          </xsl:call-template>
2107        </xsl:when>
2108        <xsl:otherwise>
2109          <xsl:call-template name="lineToNode">
2110            <xsl:with-param name="node" select="key('nodeById',@ref)"/>
2111          </xsl:call-template>
2112        </xsl:otherwise>
2113      </xsl:choose>
2114    </xsl:for-each>
2115
2116
2117  </xsl:template>
2118
2119  <!-- Generate a MoveTo command for a node -->
2120  <xsl:template name="moveToNode">
2121    <xsl:param name='node' />
2122    <xsl:variable name="x1" select="($width)-((($topRightLongitude)-($node/@lon))*10000*$scale)"/>
2123    <xsl:variable name="y1" select="($height)+((($bottomLeftLatitude)-($node/@lat))*10000*$scale*$projection)"/>
2124    <xsl:text>M</xsl:text>
2125    <xsl:value-of select="$x1"/>
2126    <xsl:text> </xsl:text>
2127    <xsl:value-of select="$y1"/>
2128  </xsl:template>
2129
2130  <!-- Generate a LineTo command for a nd -->
2131  <xsl:template name="lineToNode">
2132    <xsl:param name='node'/>
2133
2134    <xsl:variable name="x1" select="($width)-((($topRightLongitude)-($node/@lon))*10000*$scale)"/>
2135    <xsl:variable name="y1" select="($height)+((($bottomLeftLatitude)-($node/@lat))*10000*$scale*$projection)"/>
2136    <xsl:text>L</xsl:text>
2137    <xsl:value-of select="$x1"/>
2138    <xsl:text> </xsl:text>
2139    <xsl:value-of select="$y1"/>
2140  </xsl:template>
2141
2142  <xsl:template name="lineToMidpointPlus">
2143    <xsl:param name='fromNode'/>
2144    <xsl:param name='toNode'/>
2145
2146    <xsl:variable name="x1" select="($width)-((($topRightLongitude)-($fromNode/@lon))*10000*$scale)"/>
2147    <xsl:variable name="y1" select="($height)+((($bottomLeftLatitude)-($fromNode/@lat))*10000*$scale*$projection)"/>
2148
2149    <xsl:variable name="x2" select="($width)-((($topRightLongitude)-($toNode/@lon))*10000*$scale)"/>
2150    <xsl:variable name="y2" select="($height)+((($bottomLeftLatitude)-($toNode/@lat))*10000*$scale*$projection)"/>
2151
2152    <xsl:text>L</xsl:text>
2153    <xsl:value-of select="$x1+(($x2 - $x1) div 1.9)"/>
2154    <xsl:text> </xsl:text>
2155    <xsl:value-of select="$y1+(($y2 - $y1) div 1.9)"/>
2156  </xsl:template>
2157
2158  <xsl:template name="lineToMidpointMinus">
2159    <xsl:param name='fromNode'/>
2160    <xsl:param name='toNode'/>
2161
2162    <xsl:variable name="x1" select="($width)-((($topRightLongitude)-($fromNode/@lon))*10000*$scale)"/>
2163    <xsl:variable name="y1" select="($height)+((($bottomLeftLatitude)-($fromNode/@lat))*10000*$scale*$projection)"/>
2164
2165    <xsl:variable name="x2" select="($width)-((($topRightLongitude)-($toNode/@lon))*10000*$scale)"/>
2166    <xsl:variable name="y2" select="($height)+((($bottomLeftLatitude)-($toNode/@lat))*10000*$scale*$projection)"/>
2167    <xsl:text>L</xsl:text>
2168    <xsl:value-of select="$x1+(($x2 - $x1) div 2.1)"/>
2169    <xsl:text> </xsl:text>
2170    <xsl:value-of select="$y1+(($y2 - $y1) div 2.1)"/>
2171  </xsl:template>
2172
2173
2174  <xsl:template name="moveToMidpointPlus">
2175    <xsl:param name='fromNode'/>
2176    <xsl:param name='toNode'/>
2177
2178    <xsl:variable name="x1" select="($width)-((($topRightLongitude)-($fromNode/@lon))*10000*$scale)"/>
2179    <xsl:variable name="y1" select="($height)+((($bottomLeftLatitude)-($fromNode/@lat))*10000*$scale*$projection)"/>
2180
2181    <xsl:variable name="x2" select="($width)-((($topRightLongitude)-($toNode/@lon))*10000*$scale)"/>
2182    <xsl:variable name="y2" select="($height)+((($bottomLeftLatitude)-($toNode/@lat))*10000*$scale*$projection)"/>
2183    <xsl:text>M</xsl:text>
2184    <xsl:value-of select="$x1+(($x2 - $x1) div 1.9)"/>
2185    <xsl:text> </xsl:text>
2186    <xsl:value-of select="$y1+(($y2 - $y1) div 1.9)"/>
2187  </xsl:template>
2188
2189  <!-- Some attribute shouldn't be copied -->
2190  <xsl:template match="@type|@ref|@scale|@smart-linecap" mode="copyAttributes" />
2191
2192  <!-- Copy all other attributes  -->
2193  <xsl:template match="@*" mode="copyAttributes">
2194    <xsl:copy/>
2195  </xsl:template>
2196
2197
2198  <!-- Rule processing engine -->
2199
2200  <!--
2201
2202                Calls all templates inside <rule> tags (including itself, if there are nested rules).
2203
2204                If the global var withOSMLayers is 'no', we don't care about layers and draw everything
2205                in one go. This is faster and is sometimes useful. For normal maps you want withOSMLayers
2206                to be 'yes', which is the default.
2207
2208        -->
2209  <xsl:template name="processRules">
2210
2211    <!-- First select all elements - exclude those marked as deleted by JOSM -->
2212    <xsl:variable name='elements' select="$data/osm/*[not(@action) or not(@action='delete')]" />
2213
2214    <xsl:choose>
2215
2216      <!-- Process all the rules, one layer at a time -->
2217      <xsl:when test="$withOSMLayers='yes'">
2218        <xsl:call-template name="processLayer">
2219          <xsl:with-param name="layer" select="'-5'"/>
2220          <xsl:with-param name="elements" select="$elements"/>
2221        </xsl:call-template>
2222        <xsl:call-template name="processLayer">
2223          <xsl:with-param name="layer" select="'-4'"/>
2224          <xsl:with-param name="elements" select="$elements"/>
2225        </xsl:call-template>
2226        <xsl:call-template name="processLayer">
2227          <xsl:with-param name="layer" select="'-3'"/>
2228          <xsl:with-param name="elements" select="$elements"/>
2229        </xsl:call-template>
2230        <xsl:call-template name="processLayer">
2231          <xsl:with-param name="layer" select="'-2'"/>
2232          <xsl:with-param name="elements" select="$elements"/>
2233        </xsl:call-template>
2234        <xsl:call-template name="processLayer">
2235          <xsl:with-param name="layer" select="'-1'"/>
2236          <xsl:with-param name="elements" select="$elements"/>
2237        </xsl:call-template>
2238        <xsl:call-template name="processLayer">
2239          <xsl:with-param name="layer" select="'0'"/>
2240          <xsl:with-param name="elements" select="$elements"/>
2241        </xsl:call-template>
2242        <xsl:call-template name="processLayer">
2243          <xsl:with-param name="layer" select="'1'"/>
2244          <xsl:with-param name="elements" select="$elements"/>
2245        </xsl:call-template>
2246        <xsl:call-template name="processLayer">
2247          <xsl:with-param name="layer" select="'2'"/>
2248          <xsl:with-param name="elements" select="$elements"/>
2249        </xsl:call-template>
2250        <xsl:call-template name="processLayer">
2251          <xsl:with-param name="layer" select="'3'"/>
2252          <xsl:with-param name="elements" select="$elements"/>
2253        </xsl:call-template>
2254        <xsl:call-template name="processLayer">
2255          <xsl:with-param name="layer" select="'4'"/>
2256          <xsl:with-param name="elements" select="$elements"/>
2257        </xsl:call-template>
2258        <xsl:call-template name="processLayer">
2259          <xsl:with-param name="layer" select="'5'"/>
2260          <xsl:with-param name="elements" select="$elements"/>
2261        </xsl:call-template>
2262      </xsl:when>
2263
2264      <!-- Process all the rules, without looking at the layers -->
2265      <xsl:otherwise>
2266        <xsl:apply-templates select="/rules/rule">
2267          <xsl:with-param name="elements" select="$elements"/>
2268          <xsl:with-param name="layer" select="'0'"/>
2269        </xsl:apply-templates>
2270      </xsl:otherwise>
2271
2272    </xsl:choose>
2273  </xsl:template>
2274
2275
2276  <xsl:template name="processLayer">
2277    <xsl:param name="layer"/>
2278    <xsl:param name="elements"/>
2279
2280    <g inkscape:groupmode="layer" id="layer{$layer}" inkscape:label="Layer {$layer}">
2281      <xsl:apply-templates select="/rules/rule">
2282        <xsl:with-param name="elements" select="$elements"/>
2283        <xsl:with-param name="layer" select="$layer"/>
2284      </xsl:apply-templates>
2285    </g>
2286  </xsl:template>
2287
2288
2289  <!-- Process a rule at a specific level -->
2290  <xsl:template match='rule'>
2291    <xsl:param name="elements"/>
2292    <xsl:param name="layer"/>
2293
2294    <!-- If the rule is for a specific layer and we are processing that layer then pass *all* elements
2295                     to the rule, otherwise just select the matching elements for this layer. -->
2296    <xsl:choose>
2297      <xsl:when test='$layer=@layer'>
2298        <xsl:call-template name="rule">
2299          <xsl:with-param name="elements" select="$elements"/>
2300          <xsl:with-param name="layer" select="$layer"/>
2301        </xsl:call-template>
2302      </xsl:when>
2303      <xsl:otherwise>
2304        <xsl:if test='not(@layer)'>
2305          <xsl:call-template name="rule">
2306            <xsl:with-param name="elements" select="$elements[
2307                                                        tag[@k='layer' and @v=$layer]
2308                                                        or ($layer='0' and count(tag[@k='layer'])=0)
2309                                                ]"/>
2310            <xsl:with-param name="layer" select="$layer"/>
2311          </xsl:call-template>
2312        </xsl:if>
2313      </xsl:otherwise>
2314    </xsl:choose>
2315  </xsl:template>
2316
2317
2318  <xsl:template name='rule'>
2319    <xsl:param name="elements"/>
2320    <xsl:param name="layer"/>
2321
2322    <!-- This is the rule currently being processed -->
2323    <xsl:variable name="rule" select="."/>
2324
2325    <!-- Make list of elements that this rule should be applied to -->
2326    <xsl:variable name="eBare">
2327      <xsl:choose>
2328        <xsl:when test="$rule/@e='*'">node|way</xsl:when>
2329        <xsl:when test="$rule/@e">
2330          <xsl:value-of select="$rule/@e"/>
2331        </xsl:when>
2332        <xsl:otherwise>node|way</xsl:otherwise>
2333      </xsl:choose>
2334    </xsl:variable>
2335
2336    <!-- List of keys that this rule should be applied to -->
2337    <xsl:variable name="kBare" select="$rule/@k"/>
2338
2339    <!-- List of values that this rule should be applied to -->
2340    <xsl:variable name="vBare" select="$rule/@v"/>
2341    <xsl:variable name="sBare" select="$rule/@s"/>
2342
2343    <!-- Top'n'tail selectors with | for contains usage -->
2344    <xsl:variable name="e">
2345      |<xsl:value-of select="$eBare"/>|
2346    </xsl:variable>
2347    <xsl:variable name="k">
2348      |<xsl:value-of select="$kBare"/>|
2349    </xsl:variable>
2350    <xsl:variable name="v">
2351      |<xsl:value-of select="$vBare"/>|
2352    </xsl:variable>
2353    <xsl:variable name="s">
2354      |<xsl:value-of select="$sBare"/>|
2355    </xsl:variable>
2356
2357    <xsl:variable
2358      name="selectedElements"
2359      select="$elements[contains($e,concat('|',name(),'|'))
2360            or
2361            (contains($e,'|node|') and name()='way' and key('wayByNode',@id))
2362            ]"/>
2363
2364
2365    <!-- Patch $s -->
2366    <xsl:choose>
2367      <!-- way selector -->
2368      <xsl:when test="contains($s,'|way|')">
2369        <xsl:choose>
2370          <!-- every key -->
2371          <xsl:when test="contains($k,'|*|')">
2372            <xsl:choose>
2373              <!-- every key ,no value defined -->
2374              <xsl:when test="contains($v,'|~|')">
2375                <xsl:variable name="elementsWithNoTags" select="$selectedElements[count(key('wayByNode',@id)/tag)=0]"/>
2376                <xsl:call-template name="processElements">
2377                  <xsl:with-param name="eBare" select="$eBare"/>
2378                  <xsl:with-param name="kBare" select="$kBare"/>
2379                  <xsl:with-param name="vBare" select="$vBare"/>
2380                  <xsl:with-param name="layer" select="$layer"/>
2381                  <xsl:with-param name="elements" select="$elementsWithNoTags"/>
2382                  <xsl:with-param name="rule" select="$rule"/>
2383                </xsl:call-template>
2384              </xsl:when>
2385              <!-- every key ,every value -->
2386              <xsl:when test="contains($v,'|*|')">
2387                <xsl:variable name="allElements" select="$selectedElements"/>
2388                <xsl:call-template name="processElements">
2389                  <xsl:with-param name="eBare" select="$eBare"/>
2390                  <xsl:with-param name="kBare" select="$kBare"/>
2391                  <xsl:with-param name="vBare" select="$vBare"/>
2392                  <xsl:with-param name="layer" select="$layer"/>
2393                  <xsl:with-param name="elements" select="$allElements"/>
2394                  <xsl:with-param name="rule" select="$rule"/>
2395                </xsl:call-template>
2396              </xsl:when>
2397              <!-- every key , selected values -->
2398              <xsl:otherwise>
2399                <xsl:variable name="allElementsWithValue" select="$selectedElements[key('wayByNode',@id)/tag[contains($v,concat('|',@v,'|'))]]"/>
2400                <xsl:call-template name="processElements">
2401                  <xsl:with-param name="eBare" select="$eBare"/>
2402                  <xsl:with-param name="kBare" select="$kBare"/>
2403                  <xsl:with-param name="vBare" select="$vBare"/>
2404                  <xsl:with-param name="layer" select="$layer"/>
2405                  <xsl:with-param name="elements" select="$allElementsWithValue"/>
2406                  <xsl:with-param name="rule" select="$rule"/>
2407                </xsl:call-template>
2408              </xsl:otherwise>
2409            </xsl:choose>
2410          </xsl:when>
2411          <!-- no value  -->
2412          <xsl:when test="contains($v,'|~|')">
2413            <xsl:variable name="elementsWithoutKey" select="$selectedElements[count(key('wayByNode',@id)/tag[contains($k,concat('|',@k,'|'))])=0]"/>
2414            <xsl:call-template name="processElements">
2415              <xsl:with-param name="eBare" select="$eBare"/>
2416              <xsl:with-param name="kBare" select="$kBare"/>
2417              <xsl:with-param name="vBare" select="$vBare"/>
2418              <xsl:with-param name="layer" select="$layer"/>
2419              <xsl:with-param name="elements" select="$elementsWithoutKey"/>
2420              <xsl:with-param name="rule" select="$rule"/>
2421            </xsl:call-template>
2422          </xsl:when>
2423          <!-- every value  -->
2424          <xsl:when test="contains($v,'|*|')">
2425            <xsl:variable name="allElementsWithKey" select="$selectedElements[key('wayByNode',@id)/tag[contains($k,concat('|',@k,'|'))]]"/>
2426            <xsl:call-template name="processElements">
2427              <xsl:with-param name="eBare" select="$eBare"/>
2428              <xsl:with-param name="kBare" select="$kBare"/>
2429              <xsl:with-param name="vBare" select="$vBare"/>
2430              <xsl:with-param name="layer" select="$layer"/>
2431              <xsl:with-param name="elements" select="$allElementsWithKey"/>
2432              <xsl:with-param name="rule" select="$rule"/>
2433            </xsl:call-template>
2434          </xsl:when>
2435
2436          <!-- defined key and defined value -->
2437          <xsl:otherwise>
2438            <xsl:variable name="elementsWithKey" select="$selectedElements[
2439                                                        key('wayByNode',@id)/tag[
2440                                                                contains($k,concat('|',@k,'|')) and contains($v,concat('|',@v,'|'))
2441                                                                ]
2442                                                        ]"/>
2443            <xsl:call-template name="processElements">
2444              <xsl:with-param name="eBare" select="$eBare"/>
2445              <xsl:with-param name="kBare" select="$kBare"/>
2446              <xsl:with-param name="vBare" select="$vBare"/>
2447              <xsl:with-param name="layer" select="$layer"/>
2448              <xsl:with-param name="elements" select="$elementsWithKey"/>
2449              <xsl:with-param name="rule" select="$rule"/>
2450            </xsl:call-template>
2451          </xsl:otherwise>
2452        </xsl:choose>
2453      </xsl:when>
2454
2455      <!-- other selector -->
2456      <xsl:otherwise>
2457        <xsl:choose>
2458          <xsl:when test="contains($k,'|*|')">
2459            <xsl:choose>
2460              <xsl:when test="contains($v,'|~|')">
2461                <xsl:variable name="elementsWithNoTags" select="$selectedElements[count(tag)=0]"/>
2462                <xsl:call-template name="processElements">
2463                  <xsl:with-param name="eBare" select="$eBare"/>
2464                  <xsl:with-param name="kBare" select="$kBare"/>
2465                  <xsl:with-param name="vBare" select="$vBare"/>
2466                  <xsl:with-param name="layer" select="$layer"/>
2467                  <xsl:with-param name="elements" select="$elementsWithNoTags"/>
2468                  <xsl:with-param name="rule" select="$rule"/>
2469                </xsl:call-template>
2470              </xsl:when>
2471              <xsl:when test="contains($v,'|*|')">
2472                <xsl:variable name="allElements" select="$selectedElements"/>
2473                <xsl:call-template name="processElements">
2474                  <xsl:with-param name="eBare" select="$eBare"/>
2475                  <xsl:with-param name="kBare" select="$kBare"/>
2476                  <xsl:with-param name="vBare" select="$vBare"/>
2477                  <xsl:with-param name="layer" select="$layer"/>
2478                  <xsl:with-param name="elements" select="$allElements"/>
2479                  <xsl:with-param name="rule" select="$rule"/>
2480                </xsl:call-template>
2481              </xsl:when>
2482              <xsl:otherwise>
2483                <xsl:variable name="allElementsWithValue" select="$selectedElements[tag[contains($v,concat('|',@v,'|'))]]"/>
2484                <xsl:call-template name="processElements">
2485                  <xsl:with-param name="eBare" select="$eBare"/>
2486                  <xsl:with-param name="kBare" select="$kBare"/>
2487                  <xsl:with-param name="vBare" select="$vBare"/>
2488                  <xsl:with-param name="layer" select="$layer"/>
2489                  <xsl:with-param name="elements" select="$allElementsWithValue"/>
2490                  <xsl:with-param name="rule" select="$rule"/>
2491                </xsl:call-template>
2492              </xsl:otherwise>
2493            </xsl:choose>
2494          </xsl:when>
2495          <xsl:when test="contains($v,'|~|')">
2496            <xsl:variable name="elementsWithoutKey" select="$selectedElements[count(tag[contains($k,concat('|',@k,'|'))])=0]"/>
2497            <xsl:call-template name="processElements">
2498              <xsl:with-param name="eBare" select="$eBare"/>
2499              <xsl:with-param name="kBare" select="$kBare"/>
2500              <xsl:with-param name="vBare" select="$vBare"/>
2501              <xsl:with-param name="layer" select="$layer"/>
2502              <xsl:with-param name="elements" select="$elementsWithoutKey"/>
2503              <xsl:with-param name="rule" select="$rule"/>
2504            </xsl:call-template>
2505          </xsl:when>
2506          <xsl:when test="contains($v,'|*|')">
2507            <xsl:variable name="allElementsWithKey" select="$selectedElements[tag[contains($k,concat('|',@k,'|'))]]"/>
2508            <xsl:call-template name="processElements">
2509              <xsl:with-param name="eBare" select="$eBare"/>
2510              <xsl:with-param name="kBare" select="$kBare"/>
2511              <xsl:with-param name="vBare" select="$vBare"/>
2512              <xsl:with-param name="layer" select="$layer"/>
2513              <xsl:with-param name="elements" select="$allElementsWithKey"/>
2514              <xsl:with-param name="rule" select="$rule"/>
2515            </xsl:call-template>
2516          </xsl:when>
2517          <xsl:otherwise>
2518            <xsl:variable name="elementsWithKey" select="$selectedElements[tag[contains($k,concat('|',@k,'|')) and contains($v,concat('|',@v,'|'))]]"/>
2519            <xsl:call-template name="processElements">
2520              <xsl:with-param name="eBare" select="$eBare"/>
2521              <xsl:with-param name="kBare" select="$kBare"/>
2522              <xsl:with-param name="vBare" select="$vBare"/>
2523              <xsl:with-param name="layer" select="$layer"/>
2524              <xsl:with-param name="elements" select="$elementsWithKey"/>
2525              <xsl:with-param name="rule" select="$rule"/>
2526            </xsl:call-template>
2527          </xsl:otherwise>
2528        </xsl:choose>
2529      </xsl:otherwise>
2530    </xsl:choose>
2531  </xsl:template>
2532
2533
2534  <xsl:template match="else">
2535    <xsl:param name="elements"/>
2536    <xsl:param name="layer"/>
2537
2538    <!-- This is the previous rule that is being negated -->
2539    <!-- TODO: abort if no preceding rule element -->
2540    <xsl:variable name="rule" select="preceding-sibling::rule[1]"/>
2541
2542    <!-- Make list of elements that this rule should be applied to -->
2543    <xsl:variable name="eBare">
2544      <xsl:choose>
2545        <xsl:when test="$rule/@e='*'">node|way</xsl:when>
2546        <xsl:when test="$rule/@e">
2547          <xsl:value-of select="$rule/@e"/>
2548        </xsl:when>
2549        <xsl:otherwise>node|way</xsl:otherwise>
2550      </xsl:choose>
2551    </xsl:variable>
2552
2553    <!-- List of keys that this rule should be applied to -->
2554    <xsl:variable name="kBare" select="$rule/@k"/>
2555
2556    <!-- List of values that this rule should be applied to -->
2557    <xsl:variable name="vBare" select="$rule/@v"/>
2558    <xsl:variable name="sBare" select="$rule/@s"/>
2559
2560
2561    <!-- Top'n'tail selectors with | for contains usage -->
2562    <xsl:variable name="e">
2563      |<xsl:value-of select="$eBare"/>|
2564    </xsl:variable>
2565    <xsl:variable name="k">
2566      |<xsl:value-of select="$kBare"/>|
2567    </xsl:variable>
2568    <xsl:variable name="v">
2569      |<xsl:value-of select="$vBare"/>|
2570    </xsl:variable>
2571    <xsl:variable name="s">
2572      |<xsl:value-of select="$sBare"/>|
2573    </xsl:variable>
2574
2575    <xsl:variable
2576      name="selectedElements"
2577      select="$elements[contains($e,concat('|',name(),'|'))
2578              or
2579              (contains($e,'|node|') and name()='way'and key('wayByNode',@id))
2580              ]"/>
2581
2582    <!-- Patch $s -->
2583    <xsl:choose>
2584      <xsl:when test="contains($s,'|way|')">
2585        <xsl:choose>
2586          <xsl:when test="contains($k,'|*|')">
2587            <xsl:choose>
2588              <xsl:when test="contains($v,'|~|')">
2589                <xsl:variable name="elementsWithNoTags" select="$selectedElements[count(key('wayByNode',@id)/tag)!=0]"/>
2590                <xsl:call-template name="processElements">
2591                  <xsl:with-param name="eBare" select="$eBare"/>
2592                  <xsl:with-param name="kBare" select="$kBare"/>
2593                  <xsl:with-param name="vBare" select="$vBare"/>
2594                  <xsl:with-param name="layer" select="$layer"/>
2595                  <xsl:with-param name="elements" select="$elementsWithNoTags"/>
2596                  <xsl:with-param name="rule" select="$rule"/>
2597                </xsl:call-template>
2598              </xsl:when>
2599              <xsl:when test="contains($v,'|*|')">
2600                <!-- no-op! -->
2601              </xsl:when>
2602              <xsl:otherwise>
2603                <xsl:variable name="allElementsWithValue" select="$selectedElements[not(key('wayByNode',@id)/tag[contains($v,concat('|',@v,'|'))])]"/>
2604                <xsl:call-template name="processElements">
2605                  <xsl:with-param name="eBare" select="$eBare"/>
2606                  <xsl:with-param name="kBare" select="$kBare"/>
2607                  <xsl:with-param name="vBare" select="$vBare"/>
2608                  <xsl:with-param name="layer" select="$layer"/>
2609                  <xsl:with-param name="elements" select="$allElementsWithValue"/>
2610                  <xsl:with-param name="rule" select="$rule"/>
2611                </xsl:call-template>
2612              </xsl:otherwise>
2613            </xsl:choose>
2614          </xsl:when>
2615          <xsl:when test="contains($v,'|~|')">
2616            <xsl:variable name="elementsWithoutKey" select="$selectedElements[count(key('wayByNode',@id)/tag[contains($k,concat('|',@k,'|'))])!=0]"/>
2617            <xsl:call-template name="processElements">
2618              <xsl:with-param name="eBare" select="$eBare"/>
2619              <xsl:with-param name="kBare" select="$kBare"/>
2620              <xsl:with-param name="vBare" select="$vBare"/>
2621              <xsl:with-param name="layer" select="$layer"/>
2622              <xsl:with-param name="elements" select="$elementsWithoutKey"/>
2623              <xsl:with-param name="rule" select="$rule"/>
2624            </xsl:call-template>
2625          </xsl:when>
2626          <xsl:when test="contains($v,'|*|')">
2627            <xsl:variable name="allElementsWithKey" select="$selectedElements[not(key('wayByNode',@id)/tag[contains($k,concat('|',@k,'|'))])]"/>
2628            <xsl:call-template name="processElements">
2629              <xsl:with-param name="eBare" select="$eBare"/>
2630              <xsl:with-param name="kBare" select="$kBare"/>
2631              <xsl:with-param name="vBare" select="$vBare"/>
2632              <xsl:with-param name="layer" select="$layer"/>
2633              <xsl:with-param name="elements" select="$allElementsWithKey"/>
2634              <xsl:with-param name="rule" select="$rule"/>
2635            </xsl:call-template>
2636          </xsl:when>
2637          <xsl:otherwise>
2638            <xsl:variable name="elementsWithKey" select="$selectedElements[not(
2639                         key('wayByNode',@id)/tag[
2640                            contains($k,concat('|',@k,'|')) and contains($v,concat('|',@v,'|'))
2641                            ]
2642                         )]"/>
2643            <xsl:call-template name="processElements">
2644              <xsl:with-param name="eBare" select="$eBare"/>
2645              <xsl:with-param name="kBare" select="$kBare"/>
2646              <xsl:with-param name="vBare" select="$vBare"/>
2647              <xsl:with-param name="layer" select="$layer"/>
2648              <xsl:with-param name="elements" select="$elementsWithKey"/>
2649              <xsl:with-param name="rule" select="$rule"/>
2650            </xsl:call-template>
2651          </xsl:otherwise>
2652        </xsl:choose>
2653      </xsl:when>
2654
2655      <xsl:otherwise>
2656        <!-- not contains $s -->
2657        <xsl:choose>
2658          <xsl:when test="contains($k,'|*|')">
2659            <xsl:choose>
2660              <xsl:when test="contains($v,'|~|')">
2661                <xsl:variable name="elementsWithNoTags" select="$selectedElements[count(tag)!=0]"/>
2662                <xsl:call-template name="processElements">
2663                  <xsl:with-param name="eBare" select="$eBare"/>
2664                  <xsl:with-param name="kBare" select="$kBare"/>
2665                  <xsl:with-param name="vBare" select="$vBare"/>
2666                  <xsl:with-param name="layer" select="$layer"/>
2667                  <xsl:with-param name="elements" select="$elementsWithNoTags"/>
2668                  <xsl:with-param name="rule" select="$rule"/>
2669                </xsl:call-template>
2670              </xsl:when>
2671              <xsl:when test="contains($v,'|*|')">
2672                <!-- no-op! -->
2673              </xsl:when>
2674              <xsl:otherwise>
2675                <xsl:variable name="allElementsWithValue" select="$selectedElements[not(tag[contains($v,concat('|',@v,'|'))])]"/>
2676                <xsl:call-template name="processElements">
2677                  <xsl:with-param name="eBare" select="$eBare"/>
2678                  <xsl:with-param name="kBare" select="$kBare"/>
2679                  <xsl:with-param name="vBare" select="$vBare"/>
2680                  <xsl:with-param name="layer" select="$layer"/>
2681                  <xsl:with-param name="elements" select="$allElementsWithValue"/>
2682                  <xsl:with-param name="rule" select="$rule"/>
2683                </xsl:call-template>
2684              </xsl:otherwise>
2685            </xsl:choose>
2686          </xsl:when>
2687          <xsl:when test="contains($v,'|~|')">
2688            <xsl:variable name="elementsWithoutKey" select="$selectedElements[count(tag[contains($k,concat('|',@k,'|'))])!=0]"/>
2689            <xsl:call-template name="processElements">
2690              <xsl:with-param name="eBare" select="$eBare"/>
2691              <xsl:with-param name="kBare" select="$kBare"/>
2692              <xsl:with-param name="vBare" select="$vBare"/>
2693              <xsl:with-param name="layer" select="$layer"/>
2694              <xsl:with-param name="elements" select="$elementsWithoutKey"/>
2695              <xsl:with-param name="rule" select="$rule"/>
2696            </xsl:call-template>
2697          </xsl:when>
2698          <xsl:when test="contains($v,'|*|')">
2699            <xsl:variable name="allElementsWithKey" select="$selectedElements[not(tag[contains($k,concat('|',@k,'|'))])]"/>
2700            <xsl:call-template name="processElements">
2701              <xsl:with-param name="eBare" select="$eBare"/>
2702              <xsl:with-param name="kBare" select="$kBare"/>
2703              <xsl:with-param name="vBare" select="$vBare"/>
2704              <xsl:with-param name="layer" select="$layer"/>
2705              <xsl:with-param name="elements" select="$allElementsWithKey"/>
2706              <xsl:with-param name="rule" select="$rule"/>
2707            </xsl:call-template>
2708          </xsl:when>
2709          <xsl:otherwise>
2710            <xsl:variable name="elementsWithKey" select="$selectedElements[not(tag[contains($k,concat('|',@k,'|')) and contains($v,concat('|',@v,'|'))])]"/>
2711            <xsl:call-template name="processElements">
2712              <xsl:with-param name="eBare" select="$eBare"/>
2713              <xsl:with-param name="kBare" select="$kBare"/>
2714              <xsl:with-param name="vBare" select="$vBare"/>
2715              <xsl:with-param name="layer" select="$layer"/>
2716              <xsl:with-param name="elements" select="$elementsWithKey"/>
2717              <xsl:with-param name="rule" select="$rule"/>
2718            </xsl:call-template>
2719          </xsl:otherwise>
2720        </xsl:choose>
2721      </xsl:otherwise>
2722    </xsl:choose>
2723  </xsl:template>
2724
2725
2726  <xsl:template name="processElements">
2727    <xsl:param name="eBare"/>
2728    <xsl:param name="kBare"/>
2729    <xsl:param name="vBare"/>
2730    <xsl:param name="layer"/>
2731    <xsl:param name="elements"/>
2732    <xsl:param name="rule"/>
2733
2734
2735    <xsl:if test="$elements">
2736 
2737      <!-- elementCount is the number of elements we started with (just used for the progress message) -->
2738      <xsl:variable name="elementCount" select="count($elements)"/>
2739      <!-- If there's a proximity attribute on the rule then filter elements based on proximity -->
2740      <xsl:choose>
2741        <xsl:when test='$rule/@verticalProximity'>
2742          <xsl:variable name='nearbyElements1'>
2743            <xsl:call-template name="proximityFilter">
2744              <xsl:with-param name="elements" select="$elements"/>
2745              <xsl:with-param name="horizontalProximity" select="$rule/@horizontalProximity div 32"/>
2746              <xsl:with-param name="verticalProximity" select="$rule/@verticalProximity div 32"/>
2747            </xsl:call-template>
2748          </xsl:variable>
2749          <xsl:variable name='nearbyElements2'>
2750            <xsl:call-template name="proximityFilter">
2751              <xsl:with-param name="elements" select="exslt:node-set($nearbyElements1)/*"/>
2752              <xsl:with-param name="horizontalProximity" select="$rule/@horizontalProximity div 16"/>
2753              <xsl:with-param name="verticalProximity" select="$rule/@verticalProximity div 16"/>
2754            </xsl:call-template>
2755          </xsl:variable>
2756          <xsl:variable name='nearbyElements3'>
2757            <xsl:call-template name="proximityFilter">
2758              <xsl:with-param name="elements" select="exslt:node-set($nearbyElements2)/*"/>
2759              <xsl:with-param name="horizontalProximity" select="$rule/@horizontalProximity div 8"/>
2760              <xsl:with-param name="verticalProximity" select="$rule/@verticalProximity div 8"/>
2761            </xsl:call-template>
2762          </xsl:variable>
2763          <xsl:variable name='nearbyElements4'>
2764            <xsl:call-template name="proximityFilter">
2765              <xsl:with-param name="elements" select="exslt:node-set($nearbyElements3)/*"/>
2766              <xsl:with-param name="horizontalProximity" select="$rule/@horizontalProximity div 4"/>
2767              <xsl:with-param name="verticalProximity" select="$rule/@verticalProximity div 4"/>
2768            </xsl:call-template>
2769          </xsl:variable>
2770          <xsl:variable name='nearbyElements5'>
2771            <xsl:call-template name="proximityFilter">
2772              <xsl:with-param name="elements" select="exslt:node-set($nearbyElements4)/*"/>
2773              <xsl:with-param name="horizontalProximity" select="$rule/@horizontalProximity div 2"/>
2774              <xsl:with-param name="verticalProximity" select="$rule/@verticalProximity div 2"/>
2775            </xsl:call-template>
2776          </xsl:variable>
2777          <xsl:variable name='nearbyElementsRtf'>
2778            <xsl:call-template name="proximityFilter">
2779              <xsl:with-param name="elements" select="exslt:node-set($nearbyElements5)/*"/>
2780              <xsl:with-param name="horizontalProximity" select="$rule/@horizontalProximity"/>
2781              <xsl:with-param name="verticalProximity" select="$rule/@verticalProximity"/>
2782            </xsl:call-template>
2783          </xsl:variable>
2784
2785          <!-- Convert nearbyElements rtf to a node-set -->
2786          <xsl:variable name="nearbyElements" select="exslt:node-set($nearbyElementsRtf)/*"/>
2787
2788          <xsl:message>
2789            Processing &lt;rule e="<xsl:value-of select="$eBare"/>" k="<xsl:value-of select="$kBare"/>" v="<xsl:value-of select="$vBare"/>"
2790                        horizontalProximity="<xsl:value-of select="$rule/@horizontalProximity"/>" verticalProximity="<xsl:value-of select="$rule/@verticalProximity"/>" &gt;
2791            Matched by <xsl:value-of select="count($nearbyElements)"/> out of <xsl:value-of select="count($elements)"/> elements for layer <xsl:value-of select="$layer"/>.
2792          </xsl:message>
2793
2794          <xsl:apply-templates select="*">
2795            <xsl:with-param name="layer" select="$layer"/>
2796            <xsl:with-param name="elements" select="$nearbyElements"/>
2797            <xsl:with-param name="rule" select="$rule"/>
2798          </xsl:apply-templates>
2799        </xsl:when>
2800        <xsl:otherwise>
2801
2802          <xsl:message>
2803            Processing &lt;rule e="<xsl:value-of select="$eBare"/>" k="<xsl:value-of select="$kBare"/>" v="<xsl:value-of select="$vBare"/>" &gt;
2804            Matched by <xsl:value-of select="count($elements)"/> elements for layer <xsl:value-of select="$layer"/>.
2805          </xsl:message>
2806
2807          <xsl:apply-templates select="*">
2808            <xsl:with-param name="layer" select="$layer"/>
2809            <xsl:with-param name="elements" select="$elements"/>
2810            <xsl:with-param name="rule" select="$rule"/>
2811          </xsl:apply-templates>
2812        </xsl:otherwise>
2813      </xsl:choose>
2814    </xsl:if>
2815  </xsl:template>
2816
2817
2818  <!-- Select elements that are not within the specified distance from any other element -->
2819  <xsl:template name="proximityFilter">
2820    <xsl:param name="elements"/>
2821    <xsl:param name="horizontalProximity"/>
2822    <xsl:param name="verticalProximity"/>
2823   
2824    <!-- Offsetting the rectangle to the right gives better results when there are a solitary pair of adjacent elements. 
2825         One will get selected but the other won't.  Without the offset neither will get selected.  -->
2826    <xsl:variable name="topOffset" select="90  + $verticalProximity"/>
2827    <xsl:variable name="bottomOffset" select="90  - $verticalProximity"/>
2828    <xsl:variable name="leftOffset" select="180 - ($horizontalProximity * 0.5)"/>
2829    <xsl:variable name="rightOffset" select="180 + ($horizontalProximity * 1.5)"/>
2830
2831    <!-- Test each element to see if it is near any other element -->
2832    <xsl:for-each select="$elements">
2833      <xsl:variable name="id" select="@id"/>
2834      <xsl:variable name="top"    select="@lat + $topOffset"/>
2835      <xsl:variable name="bottom" select="@lat + $bottomOffset"/>
2836      <xsl:variable name="left"   select="@lon + $leftOffset"/>
2837      <xsl:variable name="right"  select="@lon + $rightOffset"/>
2838      <!-- Iterate through all of the elements currently selected and if there are no elements other
2839           than the current element in the rectangle then select this element -->
2840      <xsl:if test="not($elements[not(@id=$id)
2841                                  and (@lon+180) &lt; $right
2842                                  and (@lon+180) &gt; $left
2843                                  and (@lat+90)  &lt; $top
2844                                  and (@lat+90)  &gt; $bottom
2845                                  ]
2846                        )">
2847        <xsl:copy-of select="."/>
2848      </xsl:if>
2849    </xsl:for-each>
2850  </xsl:template>
2851
2852
2853  <!-- Draw SVG layers -->
2854  <xsl:template match="layer">
2855    <xsl:param name="elements"/>
2856    <xsl:param name="layer"/>
2857    <xsl:param name="rule"/>
2858
2859    <xsl:message>
2860      Processing SVG layer: <xsl:value-of select="@name"/> (at OSM layer <xsl:value-of select="$layer"/>)
2861    </xsl:message>
2862
2863    <xsl:variable name="opacity">
2864      <xsl:if test="@opacity">
2865        <xsl:value-of select="concat('opacity:',@opacity,';')"/>
2866      </xsl:if>
2867    </xsl:variable>
2868
2869    <xsl:variable name="display">
2870      <xsl:if test="(@display='none') or (@display='off')">
2871        <xsl:text>display:none;</xsl:text>
2872      </xsl:if>
2873    </xsl:variable>
2874
2875    <g inkscape:groupmode="layer" id="{@name}-{$layer}" inkscape:label="{@name}">
2876      <xsl:if test="concat($opacity,$display)!=''">
2877        <xsl:attribute name="style">
2878          <xsl:value-of select="concat($opacity,$display)"/>
2879        </xsl:attribute>
2880      </xsl:if>
2881      <xsl:apply-templates select="*">
2882        <xsl:with-param name="layer" select="$layer"/>
2883        <xsl:with-param name="elements" select="$elements"/>
2884      </xsl:apply-templates>
2885    </g>
2886
2887  </xsl:template>
2888
2889
2890  <!-- Draw map border -->
2891  <xsl:template name="drawBorder">
2892    <!-- dasharray definitions here can be overridden in stylesheet -->
2893    <g id="border" inkscape:groupmode="layer" inkscape:label="Map Border">
2894      <line id="border-left-casing" x1="0" y1="0" x2="0" y2="{$documentHeight}" class="map-border-casing" stroke-dasharray="{($km div 10) - 1},1"/>
2895      <line id="border-top-casing" x1="0" y1="0" x2="{$documentWidth}" y2="0" class="map-border-casing" stroke-dasharray="{($km div 10) - 1},1"/>
2896      <line id="border-bottom-casing" x1="0" y1="{$documentHeight}" x2="{$documentWidth}" y2="{$documentHeight}" class="map-border-casing" stroke-dasharray="{($km div 10) - 1},1"/>
2897      <line id="border-right-casing" x1="{$documentWidth}" y1="0" x2="{$documentWidth}" y2="{$documentHeight}" class="map-border-casing" stroke-dasharray="{($km div 10) - 1},1"/>
2898
2899      <line id="border-left-core" x1="0" y1="0" x2="0" y2="{$documentHeight}" class="map-border-core" stroke-dasharray="{($km div 10) - 1},1"/>
2900      <line id="border-top-core" x1="0" y1="0" x2="{$documentWidth}" y2="0" class="map-border-core" stroke-dasharray="{($km div 10) - 1},1"/>
2901      <line id="border-bottom-core" x1="0" y1="{$documentHeight}" x2="{$documentWidth}" y2="{$documentHeight}" class="map-border-core" stroke-dasharray="{($km div 10) - 1},1"/>
2902      <line id="border-right-core" x1="{$documentWidth}" y1="0" x2="{$documentWidth}" y2="{$documentHeight}" class="map-border-core" stroke-dasharray="{($km div 10) - 1},1"/>
2903    </g>
2904  </xsl:template>
2905
2906
2907  <!-- Draw a grid over the map in 1km increments -->
2908  <xsl:template name="drawGrid">
2909    <g id="grid" inkscape:groupmode="layer" inkscape:label="Grid">
2910      <xsl:call-template name="drawGridHorizontals">
2911        <xsl:with-param name="line" select="'1'"/>
2912      </xsl:call-template>
2913      <xsl:call-template name="drawGridVerticals">
2914        <xsl:with-param name="line" select="'1'"/>
2915      </xsl:call-template>
2916    </g>
2917  </xsl:template>
2918
2919
2920  <xsl:template name="drawGridHorizontals">
2921    <xsl:param name="line"/>
2922    <xsl:if test="($line*$km) &lt; $documentHeight">
2923      <line id="grid-hori-{$line}" x1="0px" y1="{$line*$km}px" x2="{$documentWidth}px" y2="{$line*$km}px" class="map-grid-line"/>
2924      <xsl:call-template name="drawGridHorizontals">
2925        <xsl:with-param name="line" select="$line+1"/>
2926      </xsl:call-template>
2927    </xsl:if>
2928  </xsl:template>
2929
2930
2931  <xsl:template name="drawGridVerticals">
2932    <xsl:param name="line"/>
2933    <xsl:if test="($line*$km) &lt; $documentWidth">
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2935      <xsl:call-template name="drawGridVerticals">
2936        <xsl:with-param name="line" select="$line+1"/>
2937      </xsl:call-template>
2938    </xsl:if>
2939  </xsl:template>
2940
2941
2942  <!-- Draw map title -->
2943  <xsl:template name="drawTitle">
2944    <xsl:param name="title"/>
2945
2946    <xsl:variable name="x" select="$documentWidth div 2"/>
2947    <xsl:variable name="y" select="30"/>
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2949    <g id="marginalia-title" inkscape:groupmode="layer" inkscape:label="Title">
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2953      </text>
2954    </g>
2955  </xsl:template>
2956
2957
2958  <!-- Draw an approximate scale in the bottom left corner of the map -->
2959  <xsl:template name="drawScale">
2960    <xsl:variable name="x1" select="14"/>
2961    <xsl:variable name="y1" select="round(($documentHeight)+((($bottomLeftLatitude)-(number($bottomLeftLatitude)))*10000*$scale*$projection))+28"/>
2962    <xsl:variable name="x2" select="$x1+$km"/>
2963    <xsl:variable name="y2" select="$y1"/>
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2976      <text id="marginalia-scale-text-to" class="map-scale-caption" x="{$x2}" y="{$y2 - 10}">1km</text>
2977    </g>
2978  </xsl:template>
2979
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2987      www.openstreetmap.org
2988      This work is licensed under the
2989      Creative Commons Attribution-ShareAlike 2.0 License.
2990      http://creativecommons.org/licenses/by-sa/2.0/
2991
2992    </xsl:comment>
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3373          <text class="license-text" dx="0" dy="0">
3374            Copyright © <xsl:value-of select="$year"/> OpenStreetMap (openstreetmap.org)
3375          </text>
3376        </g>
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3378      <a id="license-cc-text-link" xlink:href="http://creativecommons.org/licenses/by-sa/2.0/">
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3380          <text class="license-text" dx="0" dy="0">This work is licensed under the Creative</text>
3381          <text class="license-text" dx="0" dy="8">Commons Attribution-ShareAlike 2.0 License.</text>
3382          <text class="license-text" dx="0" dy="16">http://creativecommons.org/licenses/by-sa/2.0/</text>
3383        </g>
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3389  <!-- Draw zoom controls -->
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3449    </g>
3450    <g id="gPanLeft" filter="url(#fancyButton)" onclick="fnPan('left')">
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3452    </g>
3453    <g id="gPanUp" filter="url(#fancyButton)" onclick="fnPan('up')">
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3455    </g>
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3461
3462    <line style="stroke-width: 10; stroke-linecap: butt; stroke: #8080ff;">
3463      <xsl:attribute name="x1">
3464        <xsl:value-of select="$x1"/>
3465      </xsl:attribute>
3466      <xsl:attribute name="y1">
3467        <xsl:value-of select="$y1"/>
3468      </xsl:attribute>
3469      <xsl:attribute name="x2">
3470        <xsl:value-of select="$x2"/>
3471      </xsl:attribute>
3472      <xsl:attribute name="y2">
3473        <xsl:value-of select="$y2"/>
3474      </xsl:attribute>
3475    </line>
3476
3477    <line style="stroke-width: 8; stroke-linecap: butt; stroke: white; stroke-dasharray: 10,1;">
3478      <xsl:attribute name="x1">
3479        <xsl:value-of select="$x1"/>
3480      </xsl:attribute>
3481      <xsl:attribute name="y1">
3482        <xsl:value-of select="$y1"/>
3483      </xsl:attribute>
3484      <xsl:attribute name="x2">
3485        <xsl:value-of select="$x2"/>
3486      </xsl:attribute>
3487      <xsl:attribute name="y2">
3488        <xsl:value-of select="$y2"/>
3489      </xsl:attribute>
3490    </line>
3491
3492    <!-- Need to use onmousedown because onclick is interfered with by the onmousedown handler for panning -->
3493    <g id="gZoomIn" filter="url(#fancyButton)" onmousedown="fnZoom('in')">
3494      <use x="15.5px" y="100px" xlink:href="#zoomIn" width="19px" height="19px"/>
3495    </g>
3496
3497    <!-- Need to use onmousedown because onclick is interfered with by the onmousedown handler for panning -->
3498    <g id="gZoomOut" filter="url(#fancyButton)" onmousedown="fnZoom('out')">
3499      <use x="15.5px" y="288px" xlink:href="#zoomOut" width="19px" height="19px"/>
3500    </g>
3501  </xsl:template>
3502
3503  <xsl:template name="javaScript">
3504    <script>
3505      /*
3506
3507      Osmarender
3508
3509      interactive.js
3510
3511      */
3512
3513      function fnResize() {
3514      fnResizeElement("gAttribution")
3515      fnResizeElement("gLicense")
3516      fnResizeElement("gZoomIn")
3517      fnResizeElement("gZoomOut")
3518      }
3519
3520
3521      function fnResizeElement(e) {
3522      //
3523      var oSVG,scale,currentTranslateX,currentTranslateY,oe
3524      //
3525      oSVG=document.rootElement
3526      scale=1/oSVG.currentScale
3527      currentTranslateX=oSVG.currentTranslate.x
3528      currentTranslateY=oSVG.currentTranslate.y
3529      oe=document.getElementById(e)
3530      if (oe) oe.setAttributeNS(null,"transform","scale("+scale+","+scale+") translate("+(-currentTranslateX)+","+(-currentTranslateY)+")")
3531      }
3532
3533
3534      function fnToggleImage(osmImage) {
3535      var xlink = 'http://www.w3.org/1999/xlink';
3536      ogThumbnail=document.getElementById('gThumbnail')
3537      if (ogThumbnail.getAttributeNS(null,"visibility")=="visible") fnHideImage()
3538      else {
3539      ogThumbnail.setAttributeNS(null,"visibility","visible")
3540      oThumbnail=document.getElementById('thumbnail')
3541      oThumbnail.setAttributeNS(xlink,"href",osmImage)
3542      }
3543      }
3544
3545      function fnHideImage() {
3546      ogThumbnail=document.getElementById('gThumbnail')
3547      ogThumbnail.setAttributeNS(null,"visibility","hidden")
3548      }
3549
3550
3551      /* The following code originally written by Jonathan Watt (http://jwatt.org/), Aug. 2005 */
3552
3553      if (!window)
3554      window = this;
3555
3556
3557      function fnOnLoad(evt) {
3558      if (!document) window.document = evt.target.ownerDocument
3559      }
3560
3561
3562      /**
3563      * Event handlers to change the current user space for the zoom and pan
3564      * controls to make them appear to be scale invariant.
3565      */
3566
3567      function fnOnZoom(evt) {
3568      try {
3569      if (evt.newScale == undefined) throw 'bad interface'
3570      // update the transform list that adjusts for zoom and pan
3571      var tlist = document.getElementById('staticElements').transform.baseVal
3572      tlist.getItem(0).setScale(1/evt.newScale, 1/evt.newScale)
3573      tlist.getItem(1).setTranslate(-evt.newTranslate.x, -evt.newTranslate.y)
3574      }
3575      catch (e) {
3576      // work around difficiencies in non-moz implementations (some don't
3577      // implement the SVGZoomEvent or SVGAnimatedTransform interfaces)
3578      var de = document.documentElement
3579      var tform = 'scale(' + 1/de.currentScale + ') ' + 'translate(' + (-de.currentTranslate.x) + ', ' + (-de.currentTranslate.y) + ')'
3580      document.getElementById('staticElements').setAttributeNS(null, 'transform', tform)
3581      }
3582      }
3583
3584
3585      function fnOnScroll(evt) {
3586      var ct = document.documentElement.currentTranslate
3587      try {
3588      // update the transform list that adjusts for zoom and pan
3589      var tlist = document.getElementById('staticElements').transform.baseVal
3590      tlist.getItem(1).setTranslate(-ct.x, -ct.y)
3591      }
3592      catch (e) {
3593      // work around difficiencies in non-moz implementations (some don't
3594      // implement the SVGAnimatedTransform interface)
3595      var tform = 'scale(' + 1/document.documentElement.currentScale + ') ' + 'translate(' + (-ct.x) + ', ' + (-ct.y) + ')';
3596      document.getElementById('staticElements').setAttributeNS(null, 'transform', tform)
3597      }
3598      }
3599
3600
3601      function fnZoom(type) {
3602      var de = document.documentElement;
3603      var oldScale = de.currentScale;
3604      var oldTranslate = { x: de.currentTranslate.x, y: de.currentTranslate.y };
3605      var s = 2;
3606      if (type == 'in') {de.currentScale *= 1.5;}
3607      if (type == 'out') {de.currentScale /= 1.4;}
3608      // correct currentTranslate so zooming is to the center of the viewport:
3609
3610      var vp_width, vp_height;
3611      try {
3612      vp_width = de.viewport.width;
3613      vp_height = de.viewport.height;
3614      }
3615      catch (e) {
3616      // work around difficiency in moz ('viewport' property not implemented)
3617      vp_width = window.innerWidth;
3618      vp_height = window.innerHeight;
3619      }
3620      de.currentTranslate.x = vp_width/2 - ((de.currentScale/oldScale) * (vp_width/2 - oldTranslate.x));
3621      de.currentTranslate.y = vp_height/2 - ((de.currentScale/oldScale) * (vp_height/2 - oldTranslate.y));
3622
3623      }
3624
3625
3626      function fnPan(type) {
3627      var de = document.documentElement;
3628      var ct = de.currentTranslate;
3629      var t = 150;
3630      if (type == 'right') ct.x += t;
3631      if (type == 'down') ct.y += t;
3632      if (type == 'left') ct.x -= t;
3633      if (type == 'up') ct.y -= t;
3634      }
3635
3636
3637      var gCurrentX,gCurrentY
3638      var gDeltaX,gDeltaY
3639      var gMouseDown=false
3640      var gCurrentTranslate=document.documentElement.currentTranslate
3641
3642      function fnOnMouseDown(evt) {
3643      gCurrentX=gCurrentTranslate.x
3644      gCurrentY=gCurrentTranslate.y
3645      gDeltaX=evt.clientX
3646      gDeltaY=evt.clientY
3647      gMouseDown=true
3648      evt.target.ownerDocument.rootElement.setAttributeNS(null,"cursor","move")
3649      }
3650
3651
3652      function fnOnMouseUp(evt) {
3653      gMouseDown=false
3654      evt.target.ownerDocument.rootElement.setAttribute("cursor","default")
3655      }
3656
3657
3658      function fnOnMouseMove(evt) {
3659      var id
3660      if (gMouseDown) {
3661      gCurrentTranslate.x=gCurrentX+evt.clientX-gDeltaX
3662      gCurrentTranslate.y=gCurrentY+evt.clientY-gDeltaY
3663      }
3664      }
3665
3666
3667    </script>
3668  </xsl:template>
3669
3670</xsl:stylesheet>
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