In the case of IndexedGeometryArray, setValidIndexCount() and setInitialVertexIndex()
apply to the index arrays. For example, if your coordinateIndices array has a length
of 10, and the initialVertexIndex is 2 and validVertexCount is 5, then the
coordinateIndices array from 2 to 6 will be rendered.
For GeometryStripArray, setValidIndexCount() and setInitialVertexIndex() are
ignored.
-Uma
Java3D Team
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> Date: Fri, 10 Nov 2000 14:58:47 +0100
> From: "Dipl. Ing. Paul Szawlowski" <[EMAIL PROTECTED]>
> Subject: [JAVA3D] setValidVertexCount again
> To: [EMAIL PROTECTED]
>
> Hi again !
> C'mon I'm sure one of you can answer this question (this is my 3rd try)
> at least the engineers from sun.
> Or are this questions too simple ? (But there have been answers to much
> simpler questions on this list)
>
> I' ve just a question about how setValidVertexCount( ) works in
> IndexedGeometryArray class.
> The documentation says:
>
> Sets the valid vertex count for this GeometryArray object. This count
> specifies the
> number of vertices actually used in rendering or other operations such
> as picking and collision. This attribute is
> initialized to vertexCount.
>
> What is the function of this method in IndexedGeometryArray classes or
> is this method just ignored ?
> What happens if I use indices of vertices over the range of the valid
> vertex count ?
> Why is there no equivalent method setValidIndexCount( ) which allows me
> to specify
> the number of indices rendered ?
>
> Same questions for setInitialVertexIndex().
>
> How do I change the number of stripes rendered in GeometryStripArrays ?
>
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