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)
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.