TRI
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## TRI

### Description

Level: 4th

A tri describes a triangle. Two triangles, front and back faces, are created from a TRI element. Color and alpha of TRIs are determined in the parent SHAPE element.

### Parent Elements

SHAPE

### Child Elements

nothing

### Attributes

p0, p1, p2 (type:Point3D)

  Positions of the triangle vertexes. All these three values MUST BE SPECIFIED.

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