Re: Null triangles

[Roger H. <rog...@mi...>]

On 28 Oct, 2008, at 18:32, James Walker wrote:

>> What do you all think on this. When certain tri-grids get turned into
>> tri-meshes, they sometimes generate null triangles because two of the
>> four corners of one of the grid quadrilateral are coincident. For
>> instance the original QuickDraw3D sample code generated a sphere  
>> and a
>> cone with Tri-grids and at the poles of the sphere and the point of
>> the cone, this happened. Would it be worthwhile to not generate these
>> null triangles, or should the tri-mesh constructor function filter
>> them out or should we continue to filter them out every time we  
>> render
>> or do processing of triangulated  data such as when doing CSG
>> calculations.
>
> I don't have a strong opinion, but it might be reasonable to filter  
> out
> empty triangles in e3geom_trigrid_cache_new.

Good, that's what I meant by "the tri-mesh constructor function".

I will look at that function when I get some spare time.