Hi David,
Java 3D only renders triangles (or convex quadrilaterals that can be
rendered as a pair of triangles). You need to subdivide non-convex
polygons, or convex polygons with more than 4 sides, using the
Triangulator class. We have no plans to change this. Another option
for convex polygons with more than 4 sides is to take the vertex data
that describes a convex polygon and render it as a Triangle Fan. If
you are talking about non-convex polygons, then they need to be
tessellated before rendering anyway. The low level graphics APIs don't
render non-convex polygons directly (for good reasons, I might add).
--
Kevin Rushforth
Java 3D Team
Sun Microsystems
[EMAIL PROTECTED]
>Date: Wed, 20 Jan 1999 11:51:50 -0800
>To: [EMAIL PROTECTED]
>From: David Freda <[EMAIL PROTECTED]>
>Subject: [java3d] Q: n-sided polygons, n > 4 ?
>
>Hi,
>
>Is there, or will there be, the ability to draw polygons with more than 4
>sides without subdividing them into 3- or 4-sided polygons?
>
>Several times I've searched the documentation to have my question answered.
> The question seems to have been asked here once before in July, but I
>didn't see an answer to it.
>
>Maybe I missed something, but it seems to me that polys of more than 4
>sides are not supported by the Java3D API. Is this correct? There's no
>specific wording that one can not do polys of more than 4 sides, which left
>a few of us wondering if that might change to the spec in the future. One
>could derive one's own class to handle these (from IndexedGeometryArray,
>say, and call it IndexedPolygonArray), but I hoped that maybe someone out
>there could comment on this and set us straight once and for all.
>
>Thanks in advance,
>
>-david
>
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