gupta@plato.engr.umbc.edu (Rajeev Gupta) (06/14/91)
Hello all,
I am trying to get triangular strips from a triangularized NURBS surface.
For a simple surface , comparing the z's of the triangle vertices
and that of the cutting plane might give me a strip, I guess. (with
special cases like cutting plane passing thru one or more vertices or
overlapping one or more edges of the triangles).
For a really obtuse looking surface , the path of the strip should
be more difficult to trace and one might obtain a fatter triangular band
going through a cluster of triangles.
Is there an easy data structure suggested for problems like these?
What is usually the best or optimum way to handle a general problem
like this?
References to an algorithm or an example code or any good-natured
help is more then welcome.
Also, I need some references to a package (in X11 env), which can
display surfaces, meshes etc. given for example the x,y,z coordinates of
control points for a NURBS surface. I use MATLAB currently which is
kinda limited in 3dplots. Its o.k in displaying things in the parametric
domain.
Thankx and Looking forward to your suggestions.
Rajeev gupta
gupta@plato.engr.umbc.edu