I have brought this subject up before, various times. I thought it would of been resolved by now. Instead, changes have been made that, are well, certainly not correct. (IMHO of course)
For me, a closed CP spline should close and be controlled by the input points. Now in Build 852 (current release of VC pro (on PC)) the start and endpoints close on a knot. This is not workable.
In the latest offering of Shark, build 929, instead of the knot, an extra CP is added to smooth the curve, sorry, but this must be a joke, it is unacceptable.
I have attached a quick mov, first it shows how I expect a closed CP spline to behave correctly(Rhino), it then shows the result in VC pro 852, then the result in Shark 929
I did send in a bug report concerning this added CP point to the closed spline in Shark a few months ago, but still this added CP point is added which makes the output nothing like what is wanted.
http://dc152.4shared.com/downlo...453/closed_CP_spline.mov- Steve