NAME

C SPECIFICATION

#include <cx/Geometry.h>

cxGeo cxGeoTrisDefine(
 int npoint,
 float *point,
 int nindex,
 long *index )

FORTRAN SPECIFICATION

integer function cxGeoTrisDefine(n,point, nindex, index)
integer npoint
real point(3, npoint)
integer nindex
integer index(nindex)

PARAMETERS

npoint

Number of points.

point

An array of XYZ triples for vertices.

nindex

Number of indices.

index

Indices into the points array.

DESCRIPTION

Indexing of vertices is zero-based, i.e. the first vertex is referenced by index 0, and the last by npoint - 1. An index element value of -1 indicates the end of a triangle mesh. An index element value of -2 indicates a vertex swap.

The return value is a tag for this object that may be used to reference it at a later time with cxGeoFocus(3E).

Valid attributes are colors, normals, and transparencies. Attribute distribution may be CX_GEO_PER_OBJECT, CX_GEO_PER_FACE, CX_GEO_PER_VERTEX, or CX_GEO_PER_VERTEX_INDEXED.

SEE ALSO