SoTriangleStripSet

InventorModule

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

Purpose

The shape node SoTriangleStripSet constructs triangle strips from vertices. The vertices may be specified in SoVertexProperty or by the currently inherited coordinates. For optimal performance, using the vertexProperty field is recommended.

SoTriangleStripSet is one of the fastest ways to render polygonal objects in Open 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 contains 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 one triangle in the first strip and three in the second.

The coordinates of the strips are transformed by the current cumulative transformation. The strips are rendered with the current light model and drawing style.

The treatment of the current material and normal binding is as follows: The PER_PART binding specifies a material or normal for each strip in 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, and the default material binding is OVERALL.

If any normals (or materials) are specified, Open Inventor assumes you provide the correct number, 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

Sets the start index for coordinates.

Num Vertices

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

Sets 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.