[Bf-committers] KnifeSubdivide and turning corners...
Nathan Vegdahl
bf-committers@blender.org
Tue, 9 Sep 2003 07:20:41 -0700 (PDT)
Well, I can't give you any hints about the code, but I can say a big
thankyou from the Blender community! This has been a top feature request for a
very long time. Great work! Hope you can work out the bugs. :-)
--Nathan "Cessen" Vegdahl
--- Robert Wenzlaff <rwenzlaff@soylent-green.com> wrote:
> I've been made a knife "subdivide tool", where you draw a mouse trail on the
> screen and the edges are subdivided IFF the verts are selected ans it is
> intersected by the mouse trail. Very useful for adding extra geometry to a
> model. It's working except for 1 minor flaw, and one anoying behavior
> (blender's fault not mine!)
>
> The flaw is, I need to disable gestures while the trail is drawn. My first
> thought was to make a G.flag value that bypassed calls to gesture(). It
> dosn't seem to quite work, maybe I missed one... I'll look more later, but
> any hints are appreciated.
>
> The anoyance is that when turning corners, it creates 4 tris. If the new
> diagonal between the subdivided edges were also subdivided (like both new
> edges in a quad divided in 4), this could be filled with 3 quads instead. I
>
> was looking at the code in subdivideflag() and had it working for 1 of the 4
> cases (edges 1 and 4 have new verts) but I wasn't sure if my method was
> safe. Can I rely on the edges being in sequential order, so that edge1 is
> always next to edge2? Or do I need a new method before moving on to the
> other 3 cases?
>
> Then, of course, I need to get the uv mapping right.
>
> Patch for my knife subdivide tool (against Tuhopuu2) is here:
> http://www.soylent-green.com/KnifeSubT2_rev2.patch if you want to try it
> out.
> Rev1 fails because of int math roundoff error. Had to do the math in floats.
> (Usage: Select verts, hit K, LMB drag line, hit K).
> --
> ***********************************************
> "Obscure, Profound it was, and Nebulous,
> So that by fixing on it's depths my sight,
> Nothing whatsoever I discerned therein."
>
> -Dante, predicting the
> Windows 95 API.
> ***********************************************
> Robert Wenzlaff rwenzlaff@soylent-green.com
>
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