hello, i have a few questions regarding working with ON_BezierCurves. I want to evaluate the tangents at the start and end points of a bezier curve. the function ON_BezierCurve::TangentAt() seems to be what i want, but it takes a double as its argument instead of a point. what does the double represent? distance from the beginning of the curve? how can i get the tangent at the beginning/end points of the curve?
also, is it possible to access specific control points of an ON_BezierCurve? I'm mostly concerned with the first and last points of the curve. the ON_BezierCurve::PointAt() looks close, but again, it takes a double as its argument and i'm not sure what to do with it. 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
