**icetBoundingVertices -- set bounds of geometry.**

#include <GL/ice-t.h>

void icetBoundingVertices( | GLint | size, |

GLenum | type, | |

GLsizei | stride, | |

GLsizei | count, | |

const GLvoid * | pointer ); |

**icetBoundingVertices**
is used to tell **IceT **what the bounds of
the geometry drawn by the callback registered with **icetDrawFunc**
are. The bounds are assumed to be the convex hull of the vertices given.
The user should take care to make sure that the drawn geometry actually
does fit within the convex hull, or the data may be culled in unexpected
ways. **IceT **runs most efficiently when the bounds given are tight
(match the actual volume of the data well) and when the number of
vertices given is minimal.

The *size*
parameter specifies the number of coordinates given for
each vertex. Coordinates are given in X-Y-Z-W order. Any Y or Z
coordinate not given (because *size*
is less than 3) is assumed to
be 0.0, and any W coordinate not given (because *size*
is less
than 4) is assumed to be 1.0.

The *type*
parameter specifies in what data type the coordinates are
given. Valid *type*s
are **ICET_SHORT**,
**ICET_INT**,
**ICET_FLOAT**,
and **ICET_DOUBLE**,
which correspond to types
GLshort,
GLint,
GLfloat,
and GLdouble,
respectively.

The *stride*
parameter specifies the offset between consecutive
vertices in bytes. If *stride*
is 0, the array is assumed to be
tightly packed.

The *count*
parameter specifies the number of vertices to set.

The *pointer*
parameter is an array of vertices with the first
vertex starting at the first byte.

If data replication is being used, each process in a data replication
group should register the same bounding vertices that encompass the
entire geometry. By default there is no data replication, so unless you
call **icetDataReplicationGroup**,
all process can have their own
bounds.

**ICET_INVALID_VALUE**-

Raised if*type*is not one of**ICET_SHORT**,**ICET_INT**,**ICET_FLOAT**, or**ICET_DOUBLE**.

None.

None known.

Copyright (C)2003 Sandia Corporation

Under the terms of Contract DE-AC04-94AL85000, there is a non-exclusive license for use of this work by or on behalf of the U.S. Government. Redistribution and use in source and binary forms, with or without modification, are permitted provided that this Notice and any statement of authorship are reproduced on all copies.

*icetDrawFunc*(3),
*icetBoundingBox*(3),
*icetDataReplicationGroup*(3)

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Time: 21:48:06 GMT, April 16, 2011