[cairo] Getting Colour from linear gradient

[Michael Gurnett]

Is there anyway of determining the colour at a given position from a linear gradiant. Say for example I have

pat = cairo_pattern_create_linear (0.0, 0,  Width, 0);
cairo_pattern_add_color_stop_rgba (pat, 0, 1, 0, 0, 1);
cairo_pattern_add_color_stop_rgba (pat, 1, 0, 0, 0, 1);

I would like to just question cairo the colour value at a given position with something like


cairo_pattern_get_color_from_gradient(pat,0.5);


The reason I'm asking this is that I'm currently using linear gradients on strokes (a non closed arc), and I would like to create the linear gradient and then remap it to the path of the arc by creating smaller gradients based on the tangents of the curvature.

Mick

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