NAME
	  DtGroupGetNormals - Get a list of normals for	the given
	  group.


     SYNOPSIS
	  #include <Dt.h>


	  int  DtGroupGetNormals( int shapeID, int groupID, int	*count,	DtVec3f	**normals )


     DESCRIPTION
	  DtGroupGetNormals() returns a	normal list for	the group
	  indicated by the given shapeID and groupID. The number of
	  normals is returned in count.	A pointer to a list of the
	  normals is placed in the variable pointed to by normals. The
	  array	returned by DtGroupGetNormals()	is not an internal
	  array, and must be freed by the calling function.  It	may be
	  modified, but	will not change	data stored in the model.  C
	  programmers can access the components	of the normal array as
	  though it were a simple structure as follows:

		    typedef struct DtVec3f { float vec[3];};

		    DtVec3f *norms;
		    DtGroupGetNormals( groupID,	DtVec3f	&norms );
		    /* The first normal	*/
		    x =	norms[0].vec[0];
		    y =	norms[0].vec[1];
		    z =	norms[0].vec[2];



     DIAGNOSTICS
	  DtGroupGetNormals() returns one on success and zero on
	  failure.


     FILES
	  Link with -lDtOMio