PS_SHADING(3) 1 PS_SHADING(3)ps_shading - Creates a shading for later useSYNOPSIS
int ps_shading (resource $psdoc, string $type, float $x0, float $y0, float $x1, float $y1, float $c1, float $c2, float $c3, float
$c4, string $optlist)
DESCRIPTION
Creates a shading, which can be used by ps_shfill(3) or ps_shading_pattern(3).
The color of the shading can be in any color space except for pattern.
PARAMETERS
o $psdoc
- Resource identifier of the postscript file as returned by ps_new(3).
o $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(3) for their meaning).
o $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.
o $c1, c2, c3, c4
- See ps_setcolor(3) for their meaning.
o $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.
RETURN VALUES
Returns the identifier of the pattern or FALSE on failure.
SEE ALSO ps_shading_pattern(3), ps_shfill(3).
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PS_SHADING(3) Library Functions Manual PS_SHADING(3)NAME
PS_shading -- Create shading
SYNOPSIS
#include <pslib.h>
int PS_shading(PSDoc *psdoc, const char *shtype, float x0, float y0, float x1, float y1, float c1, float c2, float c3, float c4, const char
*optlist)
DESCRIPTION
This function creates a shading which can be used by PS_shfill(3) or PS_shading_pattern(3). 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(3) for their meaning). The coordinates x0, y0, x1, y1 are the start and end point of the shading. If the shading is of
type `radial' the option list must also contain the parameters r0 and r1 with the radius of the start and end circle.
The color of the shading can be in any color space except for `pattern'.
RETURN VALUE
Returns the identifier of the shading or zero in case of an error. The identifier is a positiv number.
SEE ALSO PS_shfill(3), PS_shading_pattern(3)AUTHOR
This manual page was written by Uwe Steinmann uwe@steinmann.cx.
PS_SHADING(3)
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