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       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

       The type parameter specifies in what  data  type  the  coordinates  are
       given.   Valid   types   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.


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




       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.

See Also

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

IceT Reference                  April 12, 2006         icetBoundingVertices(3)