Dennis J Bouvier wrote:
> If the situation is as David has described, then the "problem" lies
> in how the triangle strip array has been created. Java 3D, Open GL,
> and other 3D graphics rendering systems cull polygonal surfaces
> by default. It seems as though the "holes" are individual triangles
> of the strip with the vertices defined in the opposite order as the
> rest of the strip.
>
Yes. That's almost certainly the problem.
So what you're telling me is that a triangle strip
has to be created like this:
| / | / | / | / |
| / | / | / | / |
and not like this ?
| / | \ | / | \ |
| / | \ | / | \ |
Does the API documentation on TriangleStripArray specify this? I don't recall
that
it does. It should if it is a requirement.
I had chosen the diagonal direction for each triangle for which the diagonal
most closely approximates the cubic-spline approximation of the surface
height in the middle of each rectangle.
That's why I had diagonals in any old direction along the strip.
Just out of curiosity, is it possible to override the triangle-vertex-order
assumption of
which is the back-face by supplying normals?
Eric
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