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IDL

COMPUTE_MESH_NORMALS

COMPUTE_MESH_NORMALS

The COMPUTE_MESH_NORMALS function computes normal vectors for a set of polygons described by the input array.

Syntax


Result = COMPUTE_MESH_NORMALS( fVerts[, iConn] )

Return Value


Returns a 3 x M array containing a unit normal for each vertex in the input array.

Arguments


fVerts

A 3 x M array of vertices.

iConn

A connectivity array (see the POLYGONS keyword to IDLgrPolygon::Init). If no iConn array is provided, it is assumed that the vertices in fVerts constitute a single polygon.

Keywords


None.

Version History


5.1

Introduced

Notes


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