rdr(3G)								       rdr(3G)

NAME    [Toc]    [Back]

     rdr, rdri,	rdrs, rdr2, rdr2i, rdr2s - relative draw

C SPECIFICATION    [Toc]    [Back]

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

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

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

     void rdr2(dx, dy)
     Coord dx, dy;

     void rdr2i(dx, dy)
     Icoord dx,	dy;

     void rdr2s(dx, dy)
     Scoord dx,	dy;

     All of the	above routines are functionally	the same.  They	differ only in
     the type declarations of their parameters and whether or not 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 new point.

     dy	  expects the distance from the	y coordinate of	the current graphics
	  position to the y coordinate of the new point.

     dz	  expects the distance from the	z coordinate of	the current graphics
	  position to the z coordinate of the new point.

DESCRIPTION    [Toc]    [Back]

     rdr is the	relative version of draw.  It connects the current graphics
     position and a point, at the specified distance, with a line segment
     using the current linestyle, linewidth, color (if in depth-cue mode, the
     depth-cued	color is used),	and writemask.	The system updates the current
     graphics position to the new point.

     Do	not place routines that	invalidate the current graphics	position
     within sequences of relative moves	and draws.

SEE ALSO    [Toc]    [Back]

     bgnline, endline, popmatrix, pushmatrix, rmv, translate, v







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rdr(3G)								       rdr(3G)



NOTE
     rdr should	not be used in new development.	 Rather, lines should be drawn
     using the high-performance	v commands, surrounded by calls	to bgnline and
     endline.  Matrix commands pushmatrix, translate, and popmatrix should be
     used to accomplish	relative positioning.


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