example recursion tree

[Andres Taborda]

Some user can help me with an example
of recursion for display an svg tree with nodes....
for example:
           A
         /   \  
        B     C
             / \
      ....   .....
My preocupation is howto capture and save position previous and next
nodes father and subnodes,etc.
I have the follow code but not know if is efficient.
//file xml
<?xml version="1.0"?>
<xsp:page xmlns:xsp="http://apache.org/xsp";
   xmlns:session="http://apache.org/xsp/session/2.0";
   xmlns:cinclude="http://apache.org/cocoon/include/1.0";>
<estructura>
   <componente posicionX="250" posicionY="40">
      <descripcion>raiz</descripcion>
      <etiqueta>name</etiqueta>
      <contiene>
         <componente posicionX="350" posicionY="100">
            <descripcion>hijo1</descripcion>
            <etiqueta>name1</etiqueta>
         </componente>
         <componente posicionX="170" posicionY="100">
            <descripcion>hijo2</descripcion>
            <etiqueta>name2</etiqueta>
         </componente>
      </contiene>
   </componente>
</estructura>
</xsp:page>
//code xsl
<?xml version="1.0"?>
<xsl:stylesheet version="1.0" 
xmlns:xsl="http://www.w3.org/1999/XSL/Transform";>

<xsl:template match="estructura">
<svg width="1000" height="1000">
<!-- definiciones para usar despues -->
<defs>
<filter id="blur1"><feGaussianBlur stdDeviation="3"/></filter>
<filter id="blur2"><feGaussianBlur stdDeviation="1"/></filter>
<filter id="dropShadow" filterUnits="userSpaceOnUse" x="0" y="0" 
width="500" height="500">
 <feOffset in="SourceAlpha" dx="5" dy="5" result="offset"/>
 <feGaussianBlur in="offset" stdDeviation="5" result="blur"/>
 <feMerge><feMergeNode in="blur"/><feMergeNode 
in="SourceGraphic"/></feMerge>
</filter>
</defs>
<!-- grafica -->
<g title="this is a tooltip">
<!-- definimos la plantilla area de trabajo -->
<rect x="2" y="2" width="600" height="600" fill="none" stroke="black" 
stroke-width="2"/>
<xsl:apply-templates/>
</g>
</svg>
</xsl:template>

<xsl:template match="componente">
<circle cx="[EMAIL PROTECTED]" cy="[EMAIL PROTECTED]" r="13" 
style="fill:red;stroke:black;stroke-width:3;filter:url(#dropShadow);"/>
<xsl:apply-templates/>
</xsl:template>

<xsl:template match="contiene">
<xsl:for-each select="componente">
<!--  <line x1="250" y1="53" x2="[EMAIL PROTECTED]" y2="[EMAIL PROTECTED]" 
stroke-width="2" stroke="#030959"/> -->
<circle cx="[EMAIL PROTECTED]" cy="[EMAIL PROTECTED]" r="13" 
style="fill:yellow;stroke:black;stroke-width:3;filter:url(#dropShadow);"/>
</xsl:for-each>
</xsl:template>
</xsl:stylesheet>

Bye, thanks very much
--
Cordialmente,
Andres Taborda
Departamento de Sistemas
http://www.saludcolombiaeps.com.co
email:[EMAIL PROTECTED]
SaludColombia E.P.S. - Una Sola Familia
Calle 5C # 43-05 Tequendama
Telefono : 57 (002) 551 04 89 - 57 (002) 551 04 90 Ext 119
Cali - Colombia
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