hello everyone, as of r51503 i've added functions to librt/primitives/sketch_tess.cpp to enable approximation of bezier curves by a set of circular arcs using the algorithm discussed here: http://itc.ktu.lt/itc354/Riskus354.pdf
I'd like some feedback on the new functions, in particular bezier_inflection() and approx_bezier(), which both use an iterative method to walk the curve. currently, bezier_inflection() returns the first point where the curvature vector evaluated at that point has greater magnitude than the curvature vector evaluated one half interval forwards, which doesn't seem very elegant or precise. Is there a better way to find a point of inflection on the curve? similarly, approx_bezier() walks the curve in intervals, and computes the minimum distance from the approximating circular arc to the bezier curve evaluated at the interval. Is there a better way to determine when the two curves diverge by more than a given tolerance? of course, any comments on any other areas would be appreciated as well. thanks, chris ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ BRL-CAD Developer mailing list brlcad-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/brlcad-devel
