*nix Documentation Project
·  Home
 +   man pages
·  Linux HOWTOs
·  FreeBSD Tips
·  *niX Forums

  man pages->IRIX man pages -> standard/rcrvn (3)              


rcrvn(3G)							     rcrvn(3G)

NAME    [Toc]    [Back]

     rcrvn - draws a series of curve segments

C SPECIFICATION    [Toc]    [Back]

     void rcrvn(n, geom)
     long n;
     Coord geom[][4];

PARAMETERS    [Toc]    [Back]

     n	    expects the	number of control points to be used in drawing the

     geom   expects the	matrix containing the control points of	the curve

DESCRIPTION    [Toc]    [Back]

     rcrvn draws a series of rational cubic spline curve segments using	the
     current basis and precision.  The control points specified	in geom
     determine the shapes of the curve segments	and are	used four at a time.
     For example, if n is 6, three curve segments are drawn, the first using
     points 0,1,2,3 as control points, and the second and third	segments are
     controlled	by points 1,2,3,4 and 2,3,4,5, respectively.  If the current
     basis is a	B-spline, Cardinal spline, or basis with similar properties,
     the curve segments	are joined end to end and appear as a single curve.

     Each 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 rcrvn.

     After rcrvn executes, the graphics	position is undefined.

SEE ALSO    [Toc]    [Back]

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

									PPPPaaaaggggeeee 1111
[ Back ]
 Similar pages
Name OS Title
crv IRIX draws a curve
curveit IRIX draws a curve segment
rcrv IRIX draws a rational curve
curveprecision IRIX sets number of line segments used to draw a curve segment
gluBeginCurve Tru64 delimit a NURBS curve definition
gluEndCurve Tru64 delimit a NURBS curve definition
gluNurbsCurve Tru64 define the shape of a NURBS curve
bgncurve IRIX delimit a NURBS curve definition
glunurbscurve IRIX define the shape of a NURBS curve
glubegincurve IRIX delimit a NURBS curve definition
Copyright © 2004-2005 DeniX Solutions SRL
newsletter delivery service