[Bf-committers] Support for creases in subdivision surfaces

[Matthew H. Plough]

Chris McFarlen wrote:

>(Umm... I sent this from the wrong account and the moderator grabbed it.  Sorry if it shows up twice)
>
>I didn't know anyone was working on this :)  When I started looking (on Sunday) the blender.org page was slashdotted
>so I didn't know about the mailing list.  I asked the guys on #blendercoders and they said "Go for it!".  So I did.  Sorry.
>  
>
You don't need to apologize -- that stuff happens all the time in any 
scientific community, coding community, etc.  Besides, you were able to 
implement it, and I kept hitting walls.  It comes down to "may the best 
man win."  In this case, you were obviously the best man.

I want to talk with you at some point, if for no other reason than to 
give you some resources that might help you.  I did a great deal of 
reading on the topic (including that Pixar white paper), so I may be 
able to offer you some insights that you haven't thought about.  I 
posted a few resources to www.princeton.edu/~mplough/subsurf that you 
may find helpful. 

surf01a.jpg - interface ideas from a max plugin
subsurf_weights.jpg - what happens when you have vertex weights instead 
of edge weights (from Lightwave)
p159-lee.pdf - the partial entity mesh data structure that I want to put 
into Blender -- this needs some heavy duty debate, though
tubscg.pdf - A paper on interactive rendering of subdivision surfaces 
with crease edges

I will not have internet access this weekend, but I look forward to 
further discussion.

Matt