Hi
I need some information for my bachelor thesis about some indepth parts of SW freeform surface modelling. Iam german so dont expect good english pls
Spline = B-Spline = based on Basis Function, but which interpolation/approximation algorithm is SW using to for the spline-points?
Style-Spline = Bézier-Spline = based on Bernsteinpolynomial, but which interpolation/approximation algorithm is SW using to for the controll points?
All Freeform Surfaces are based on NURBS?
All basic shape surfaces are based on Algebraic functions?
SW cant do:
Cubische Hermitic Splines
Cardinal Splines
Catmull-Rom-Splines
Kochanek-Bartels-Splines
T-Splines
and many more
Brep
Polygon Mesh
Sub-D-Surfaces
and many more
Can u help to clear some things?
Jens
Not sure if this helps. Just an arcane bit of SW trivia I learned from doing API programming...
SW changes their loft algorithm from time to time. I'm sure they have their reasons.
In the API help, it once explained that it was necessary to track which version of SW was used to generate a loft feature. This was so that a loft could use its original legacy algorithm to regenerate, even if the regeneration occurred in a newer version with a new loft algorithm. e.g. A loft created in SW 2001 would continue to use the 2001 algorithm to regenerate, even in a later version of SW like SW 2007.
One result of this is that lofts created in different versions of SW with identical source features and parameters can have different results.