re detecting double points in bezier curves in article almaden ibm com capelli vnet ibm com ron capelli writes in ia b w w oeinck waterland wlink nl ferdinand oeinck writes i m looking for any information on detecting and or calculating a double point and or cusp in a bezier curve see maureen stone and tony derose a geometric characterization of parametric cubic curves acm tog vol no july pp i ve used that reference and found that i needed to go to their original tech report maureen stone and tony derose characterizing cubic bezier curves xerox edl december this report can be obtained for free from xerox corporation palo alto research center coyote hill road palo alto california the tog paper was good but this tech report had more interesting details john
