Save texture map as SVG?

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That'd be cool actually. A resolution independent .svg uv output.

I don't know if "resolution independent" would be appropriate, because the greater use of that would be to allow easy creation of a texture from the output UV file. Since the bitmaps are (I assume) created by extrapolating the pixel position of each line, the SVG polygons could be created in a similar fashion. I'm not exactly sure how similar the process could be though.

The lengthy part of texture creation in Inkscape has always been locating the exact pixel co-ordinates for a change of direction in a line, especially in circles (or cylinder ends).

Inkscape has a "bitmap trace" function that may be a good starting point for the concept if it helps. It's not great though, because it generates a shape that is all one vector polygon, sometimes with thousands of nodes in it that all have to be separated out.