Changing scales of an .svg path in XSLT 2.0

[willisd1]

A few items ago in the forum, I asked the question about how to rescale an svg polyline point. The answer worked very well and I have used that method on other svg entities.

There is one entity that I am not having any success with though - the path element.

Input:
<path d="M106.32,54.64 L108.88,98.67 40.47,180.66 160.02,180.00 z" />

I have tried to:
1. Tokenize this string using various regex (To break out the coordinates from the M and L)
2. Multiply the results by a factor (return 10*xs:decimal($k))
3. Reconstruct the sequence

I have not yet been successful. Any help would again be greatly appreciated.

[willisd1]

Well...making progress. I have accomplished the first two objectives, now I am just trying to reassemble the sequence into final a path attribute.

Code: Select all

<!--Turn path attribute into a space delimited sequence-->



  <xsl:template match="ns1:path/@d" xmlns:ns1="http://www.w3.org/2000/svg">

    <xsl:variable name="oldpath">      

      <xsl:analyze-string select="." regex='([A-Z])|(\d+\.\d+)|([a-z])'>  

       <xsl:matching-substring>

          <xsl:value-of select="regex-group(1)"/>

          <xsl:value-of select="regex-group(2)"/>

          <xsl:value-of select="regex-group(3)"/>

         <xsl:text> </xsl:text>

      </xsl:matching-substring>

    </xsl:analyze-string>

    </xsl:variable>



<!--Tokenize sequence to check if castable as XS:decimal, then rescale-->



    <xsl:variable name="newpath">    

        <xsl:value-of select="for $i in tokenize($oldpath, ' ') return(if($i    castable as xs:decimal) then 10*xs:decimal($i) else ($i))"/>

    </xsl:variable>



<!--Reassemble sequence into final path attribute-->

[george]

I would do it a little different. Split the path into tokens keeping them all (including comma and spaces). Then apply the scaling for numeric tokens and put them together:

Code: Select all

  <xsl:template match="svg:path" xmlns:svg="http://www.w3.org/2000/svg">

    <!-- Turn path attribute into a sequence of tokens -->

    <xsl:variable name="oldpath">

      <xsl:analyze-string select="@d" regex="([A-Z])|(\d+\.\d+)|([a-z])|,|\s">

        <xsl:matching-substring>

          <xsl:value-of select="."/>

          <xsl:text>#</xsl:text>

        </xsl:matching-substring>

      </xsl:analyze-string>

    </xsl:variable>

    <!--Tokenize sequence to check if castable as xs:decimal, then rescale-->

    <xsl:variable name="newpath"

      select="for $i in tokenize($oldpath, '#') 

        return(if($i castable as xs:decimal) then 10*xs:decimal($i) else ($i))"/>

    <xsl:variable name="newvalue">

      <xsl:value-of select="$newpath" separator=""/>

    </xsl:variable>

    <!--Reassemble sequence into final path attribute-->

    <svg:path d="{$newvalue}"/>

  </xsl:template>

Regards,
George

[willisd1]

Very good. Thanks again.

Since I am new to XSLT as well as programming in general, this is quite a process to educate myself. It's nice to have some experience available to keep a newbie moving forward.