cairoPatternAddColorStopRgba: cairoPatternAddColorStopRgba
Description
Adds a translucent color stop to a gradient pattern. The offset
specifies the location along the gradient's control vector. For
example, a linear gradient's control vector is from (x0,y0) to
(x1,y1) while a radial gradient's control vector is from any point
on the start circle to the corresponding point on the end circle.Usage
cairoPatternAddColorStopRgba(pattern, offset, red, green, blue, alpha)
Arguments
offset
[numeric] an offset in the range [0.0 .. 1.0]
red
[numeric] red component of color
green
[numeric] green component of color
blue
[numeric] blue component of color
alpha
[numeric] alpha component of color
Details
The color is specified in the same way as in cairoSetSourceRgba.
Note: If the pattern is not a gradient pattern, (eg. a linear or
radial pattern), then the pattern will be put into an error status
with a status of CAIRO_STATUS_PATTERN_TYPE_MISMATCH.