circi man page on IRIX

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circ(3G)							      circ(3G)

NAME
     circ, circi, circs - outlines a circle

C SPECIFICATION
     void circ(x, y, radius)
     Coord x, y, radius;

     void circi(x, y, radius)
     Icoord x, y, radius;

     void circs(x, y, radius)
     Scoord x, y, radius;

     The routines above are functionally the same. However, the type
     declarations for the coordinates differ.

PARAMETERS
     x	      expects the x coordinate of the center of the circle specified
	      in world coordinates.

     y	      expects the y coordinate of the center of the circle specified
	      in world coordinates.

     radius   expects the length of the radius of the circle.

DESCRIPTION
     circ draws an unfilled circle in the x-y plane with z assumed to be zero.
     To create a circle that does not lie in the x-y plane, draw the circle in
     the x-y plane, then rotate and/or translate the circle. Note that circles
     rotated outside the 2-D x-y plane appear as ellipses.

     A circle is drawn as a sequence of line segments, and therefore inherits
     all properties that affect the drawing of lines.  These include the
     current color, writemask, line width, stipple pattern, shade model, line
     antialiasing mode, and subpixel mode.  The stipple pattern is initialized
     to bit zero of the current linestyle before the circle is drawn, then
     shifted continuously through the segments of the circle.

     After circ executes, the graphics position is undefined.

SEE ALSO
     arc, bgnclosedline, circf, crvn, linewidth, linesmooth, lsrepeat,
     scrsubdivide, setlinestyle, shademodel, subpixel

BUGS
     When the line width is greater than 1, small notches will appear in
     circles, because of the way wide lines are implemented.

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