NAME
	  DtShapeGetVertex - Get a vertex for the given	shape and
	  vertex number.


     SYNOPSIS
	  #include <Dt.h>


	  int  DtShapeGetVertex( int shapeID, int index, DtVec3f *vertex )


     DESCRIPTION
	  DtShapeGetVertex() returns a vertex for the shape indicated
	  by the given shapeID and index. The vertex is	returned via
	  the pointer to the vertex parameter.	C programmers can
	  access the components	of the vertex vector as	though it were
	  a simple structure as	follows:

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

		    DtVec3f vert;
		    x =	vert.vec[0];
		    y =	vert.vec[1];
		    z =	vert.vec[2];



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


     FILES
	  Link with -lDtOMio