How to add bezier curve in box2D

[mankichi89]

Sorry for my "stupid" question but :
" How to add a bezier curve for box2d fixture " and
" What's the difference between 'addEdges' and 'addPolygons' "

[bslayerw]

Box2D does not support Bezier curves, you'd have to implement that yourself. AddPolygon is used to create a closed collision geometry polygon and is limited to 8 vertices (can be configured in the headers). AddEdges allows "infinite" polygons that don't have to be closed. You can used add edges to approximate bezier curves.

In the past I've used Inkscape to create illustrations of my collision geometry using straight paths and export that as SVG. I then convert the SVG to edges which I then call addEdges on.

Hope that helps.

[mankichi89]

Thks

[ibisum]

bslayerw: I've also done some work with SVG-as-container-for-pipeline .. maybe we should do a wiki entry on such a subject, as I am sure your SVGPath->addEdges work is interesting, and I'm almost positive we could solve the SVG projection/coordinates system once, for all benefit? Anyway I think this is something that could definitely be of interest, and I would like to contribute as well .. I'll put it on my personal moai-todo, but its getting longer the more I type, heh heh ..