rcrv(3G)							      rcrv(3G)

NAME    [Toc]    [Back]

     rcrv - draws a rational curve

C SPECIFICATION    [Toc]    [Back]

     void rcrv(geom)
     Coord geom[4][4];

PARAMETERS    [Toc]    [Back]

     geom   expects the	array containing the four control points of the	curve
	    segment.

DESCRIPTION    [Toc]    [Back]

     rcrv draws	a rational cubic spline	curve segment using the	current	curve
     basis and curve precision.	geom specifies the four	control	points of the
     curve segment.

     The curve segment is approximated by a sequence of	straight lines.	 All
     lines use the current linestyle, which is reset prior to the first	line
     and continues through subsequent lines.  Other line modes,	including
     depthcueing, line width, and line antialiasing, also apply	to the lines
     generated by rcrv.

     After rcrv	executes, the graphics position	is undefined.

SEE ALSO    [Toc]    [Back]

     crv, crvn,	curvebasis, curveprecision, defbasis, depthcue,	linesmooth,
     linewidth,	rcrvn, setlinestyle


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