Re: vertex ordering for primitive shapes

Bernie Roehl ([email protected])
Fri, 20 Oct 1995 21:29:20 -0400

Tom Gaskins writes:

> A "spec compliant" browser would therefore ignore the ShapeHints node when
> rendering anything but IndexedFaceSets.

Yes, agreed.

> (How, then, can an author indicate that backface culling of Cone, Sphere, etc.
> is okay? Good question.)

Backface culling of the geometric primitives is always okay.

Clearly, all the primitives are "shapeType SOLID", since (after tesselation)
they're all convex polyhedrons.

And since the browser is doing the tesselation, it can guarantee that the
vertices are ordered.

-- 
   Bernie Roehl
   University of Waterloo Dept of Electrical and Computer Engineering
   Mail: [email protected]    Voice:  (519) 888-4567 x 2607 [work]
   URL: http://sunee.uwaterloo.ca/~broehl

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