Hi, This code and the formula is like 18 years old, i'd welcome someone checking on improvements. Rather to make it really good, not just with a button to set the interplation value.
Your 'plot' didnt get through... -Ton- ------------------------------------------------------------------------ Ton Roosendaal Blender Foundation [email protected] www.blender.org Blender Institute Entrepotdok 57A 1018AD Amsterdam The Netherlands On 11 Feb, 2013, at 23:26, [email protected] wrote: > Pardon me if this is the wrong list to send this to. If so, I would > appreciate someone pointing me in the right direction. Thanks! > > > The Cardinal spline interpolation for lattices befuddles me. The tension-like > variable (fc in the code) is set to 0.71, which I'm guessing is approximately > 1/sqrt(2). However, this gives very ugly and wavy results on long straight > objects like an airplane wing. In fact, the slopes at the knots is just plain > wrong. However, when fc = 0.5, I get very nice cubic-spline-like behavior > except at the end points where the code logic just seems to be wrong. > Nevertheless, the waviness at the knots is disconcerting in the current > distribution of Blender. The plots below show what I mean. > > > > > Thoughts? Any chance that fc (tension?) variable can be a parameter the user > could control? > > > _____ > David > > > > > _______________________________________________ > Bf-committers mailing list > [email protected] > http://lists.blender.org/mailman/listinfo/bf-committers _______________________________________________ Bf-committers mailing list [email protected] http://lists.blender.org/mailman/listinfo/bf-committers
