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Print at Dec 20, 2025, 1:12:38 AM

Posted by enkonyito at Nov 3, 2018, 9:26:08 PM

Re: How to find the vertices of a 3D shape?
For SH3D lights, the types of geometric constructions detected are:
- TriangleArray (like the opaque light panel)
- LineStripArray (like the unviewable light panel).

Using,

GeometryInfo geometryInfo = new GeometryInfo (geometryArray);

with the type LineStripArray, I have the error message:

java.lang.IllegalArgumentException: Unsupported geometry type

Sunflow only considers triangle-based meshes for TriangleMeshLight light sources.

light {
    type meshlight
    name meshLamp
    emit { "sRGB nonlinear" 1.000 1.000 1.000 }
    radiance 100.0
    samples 16
    points 4
        0.6 0.1 6.0
        0.3 1.0 6.0
        1.0 1.0 5.5
        1.0 0.3 5.5
    triangles 2
        0 1 2
        0 2 3
}

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EnkoNyito

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Dec 20, 2025, 1:12:38 AM