Re: [Plplot-devel] Wish list for the release

[Rafael L. <ra...@ic...>]

* Alan W. Irwin <ir...@be...> [2001-12-13 13:53]:

> I believe the problem is actually pretty simple.  Just from looking at the
> results, the current 3D shaded logic apparently makes a decision about
> which (relatively large) triangle is hidden and which not, and has no
> facility to refine the triangles shape and size so that they can smoothly
> follow the line marking the edge of hidden regions.  We were up against a
> similar problem for the excluded regions of 2D shade plots, but (see the
> last page of x16c) Rafael found a working solution that involved a binary
> search (IIRC) to refine the triangles so they smoothly followed the edge of
> the excluded region.  Although he has stated his code cannot be directly
> used in the 3D shading case, I am hoping his general idea can be used.  If
> so, it should be a matter of a reasonably short effort to fix this with
> much thanks for whoever came up with the solution.

From my recollection, the algorithms have completely different
implementations, athough the problems addressed are quite similar.  I am
afraid that the effort needed will be not that short, but who knows?

-- 
Rafael