Hi
Quadrangulating as ¨even¨ as possible an arbitrary contour, is by no means an easy task, many algorithm exists and even complete thesis have being written about that.
Recently I was developing such a tool that can be used for improve realtime retopology.
I have tested it with arbitrary contours and even ill hspaed ones and generally it performs quite good and for patch like contours used in automatic retopo it really excels :)
Cheers
