SoTriangleStripSet

InventorModule

genre	InventorNodesAutomatic
author	Silicon Graphics Inc
package	MeVisLab/Standard
definition	inventor.def

Purpose

This shape node constructs triangle strips out of vertices. The vertices may be specified in SoVertexProperty or by the current inherited coordinates. For optimal performance, the vertexProperty field is recommended.

SoTriangleStripSet is one of the fastest ways of drawing polygonal objects in Inventor. It uses the current coordinates, in order, starting with the first one. The values in the Num Vertices field indicate the number of vertices to use for each triangle strip in the set. The number of values in this field determines the number of strips.

For example, if Num Vertices has the values [3,5], coordinates 1, 2, and 3 would be used for the first triangle strip and coordinates 4, 5, 6, 7, and 8 would be used for the second strip. This would result in 1 triangle in the first strip and 3 in the second.

The coordinates of the strips are transformed by the current cumulative transformation. The strips are drawn with the current light model and drawing style. Treatment of the current material and normal binding is as follows: The PER_PART binding specifies a material or normal for each strip of the set. The PER_FACE binding specifies a material or normal for each triangle. The _INDEXED bindings are equivalent to their non-indexed counterparts. The default normal binding is PER_VERTEX. The default material binding is OVERALL.

If any normals (or materials) are specified, Inventor assumes you provide the correct number of them, as indicated by the binding. You will see unexpected results if you specify fewer normals (or materials) than the shape requires. If no normals are specified, they will be generated automatically.

Windows

Default Panel

Input Fields

vertexProperty

name: vertexProperty, type: SoNode

The coordinates are specified in the vertexProperty field (from SoVertexShape) or the current inherited state.

Output Fields

self

name: self, type: SoNode

Parameter Fields

Visible Fields

Start Index

name: startIndex, type: Integer, default: 0

Start index for coordinates.

Num Vertices

name: numVertices, type: IntegerList, default: -1

Number of vertices to use for each triangle strip in the set. The number of values in this field determines the number of strips.