In Dia shapes, the absolute location and scale of the coordinate system don't matter, and you can pick any origin and multiplier. So for some A, B and C
svg.x = A + C*shape.x
svg.y = B + C*shape.y
The gsave/setmatrix are comments I left in to allow me to debug the results of the PostScript conversion - they now serve no purpose.
You can turn the shapes into pure SVG by removing everything but the <svg:path> tags and wrapping the whole thing in <svg xmlns:svg="http://www.w3.org/2000/svg">...</svg>
Ian Redfern.
On Mon, 2006-10-02 at 14:22 -0400, Jason Greenberg wrote:
Hello, I'm trying to parse the SVG/XML shape files in _javascript_, but before I can even do that, I need to understand what the file format is. Here's an example of a couple of lines that have been rendered in dia and exported to svg format (This works great in firefox): <path style="fill: none; fill-opacity:0; stroke-width: 0.043; stroke: #aae6ff" d="M 15.5506 6.3581 L 15.5506,7.43852"/> <path style="fill: none; fill-opacity:0; stroke-width: 0.043; stroke: #000000" d="M 19.9658 6.3581 L 19.9658,7.43852"/> This makes sense to me, and is fully usable. The SVG .shape file format seems to be encoded in a way that I don't understand - here's the same paths from the shape file in its raw format: <!--gsave--> <svg:path d="M1 1216L1 2949" style="stroke: #aae6ff; stroke-width: 0.43; fill: none"/> <!--gsave--> <svg:path d="M7083 1216L7083 2949" style="stroke: #000000; stroke-width: 0.43; fill: none"/> <!--gsave--> <!--setmatrix--> Questions: 1) How do the numerical values correspond? (dividing doesn't seem to produce the same multiplier) 2) What are these gsave and setmatrix indicators all about? 3) Fingers crossed - does anyone know of a way that I could easily render these shape files in html using SVG? Thanks so much! Jay Greenberg CCIE #11021
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