ps_shading Creates a shading for later use &reftitle.description; intps_shading resourcepsdoc stringtype floatx0 floaty0 floatx1 floaty1 floatc1 floatc2 floatc3 floatc4 stringoptlist Creates a shading, which can be used by ps_shfill or ps_shading_pattern. The color of the shading can be in any color space except for pattern. &reftitle.parameters; psdoc Resource identifier of the postscript file as returned by ps_new. type The type of shading can be either radial or axial. Each shading starts with the current fill color and ends with the given color values passed in the parameters c1 to c4 (see ps_setcolor for their meaning). x0, x1, y0, y1 The coordinates x0, y0, x1, y1 are the start and end point of the shading. If the type of shading is radial the two points are the middle points of a starting and ending circle. c1, c2, c3, c4 See ps_setcolor for their meaning. optlist If the shading is of type radial the optlist must also contain the parameters r0 and r1 with the radius of the start and end circle. &reftitle.returnvalues; Returns the identifier of the pattern &return.falseforfailure;. &reftitle.seealso; ps_shading_pattern ps_shfill