hbsurf.zip - For Windows95/NT (89k)
"readme.txt" - from zip file
Source code - hbsurf.tar - For HPUX (243k) We have built a "Hierarchical B-Spline Surface Modeler" based on the concepts described by David R. Forsey and Richard H. Bartels in their SIGGRAPH '88 paper, Hierarchical B-Spline Refinement.
hbsurf.zip - For Windows95/NT (89k)
"readme.txt" - from zip file
Source code - hbsurf.tar - For HPUX (243k)
demo.gif - The classic demo for a
Hierarchical B-Spline modeler. The first image shows a B-spline
patch deformed in one spot. The second shows how refinement
allows you to control a smaller area of the surface. The third
refines one more time, pulling the tip over to the right. In the
last frame, we move the point at the first level of refinement;
notice how the entire hump moves, keeping the hook-like detail
in tact.
concent.gif - A view of the interface,
with several concentric circles Yizhou put together forming
something that looks like a flower.
face.gif - A rather spooky looking face
Yizhou did with the tool.
dino-top.gif - This shows the top
of a dinosaur head that Richard made with the tool.
dino.jpg.gif - Richard exported the
surface to POV-Ray to render this scene. Our dinosaur doesn't
look quite so threatening as Forsey and Bartels'
dragon, but you
get the idea.
Richard C. Davis
Yizhou Yu