Scalable vector graphics: "very cool stuff".
The "native" language for scripting SVG--that is, for animating an SVG document by run-time modification of its node tree with SVGDOM--is JavaScript. Steve Ball has been thinking about the desirability of binding Tcl to SVGDOM (perhaps by way of Batik [L1 ] and Jacl?).
RS: Many of SVG's items have a very close correspondence to canvas items, so one might consider using SVG for "serializing" a canvas content to XML, and loading canvas contents from XML... Consider this snippet:
<polygon fill="yellow" stroke="none"
points="350 75, 379 161, 469 161, 397 215,
423 301, 350 250, 277 301, 303 215,
231 161, 321 161"
transform="scale(.5)" />With some string manipulation (and determining the center from the bounding box, for scaling) this could easily be transformed into two canvas commands.