rpdr(3G)							      rpdr(3G)

NAME    [Toc]    [Back]

     rpdr, rpdri, rpdrs, rpdr2,	rpdr2i,	rpdr2s - relative polygon draw

C SPECIFICATION    [Toc]    [Back]

     void rpdr(dx, dy, dz)
     Coord dx, dy, dz;

     void rpdri(dx, dy,	dz)
     Icoord dx,	dy, dz;

     void rpdrs(dx, dy,	dz)
     Scoord dx,	dy, dz;

     void rpdr2(dx, dy)
     Coord dx, dy;

     void rpdr2i(dx, dy)
     Icoord dx,	dy;

     void rpdr2s(dx, dy)
     Scoord dx,	dy;

     All of the	above routines are functionally	the same.  They	differ only in
     the type declarations for their parameters	and in whether they assume a
     two- or three-dimensional space.

PARAMETERS    [Toc]    [Back]

     dx	  expects the distance from the	x coordinate of	the current graphics
	  position to the x coordinate of the next corner of the polygon.

     dy	  expects the distance from the	y coordinate of	the current graphics
	  position to the y coordinate of the next corner of the polygon.

     dz	  expects the distance from the	z coordinate of	the current graphics
	  position to the z coordinate of the next corner of the polygon.

DESCRIPTION    [Toc]    [Back]

     rpdr is the relative version of pdr.  It specifies	the next point in a
     filled polygon, using the previous	point (the current graphics position)
     as	the origin.  rpdr updates the current graphics position. The next
     drawing routine will start	drawing	from that point.

SEE ALSO    [Toc]    [Back]

     bgnpolygon, endpolygon, pclos, rpmv, v

NOTES    [Toc]    [Back]

     rpdr should not be	used in	new development.  Rather, polygons should be
     drawn using the high-performance v	commands, surrounded by	calls to
     bgnpolygon	and endpolygon.	 Matrix	commands pushmatrix, translate,	and
     popmatrix should be used to accomplish relative positioning.





									Page 1






rpdr(3G)							      rpdr(3G)



     There can be no more than 256 vertices in a polygon.  Therefore, there
     can be no more than 255 rpdr calls	between	rpmv and pclos.


									PPPPaaaaggggeeee 2222