<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META http-equiv=Content-Type content="text/html; charset=iso-8859-1"> <META content="MSHTML 6.00.6000.16705" name=GENERATOR> <STYLE></STYLE> </HEAD> <BODY bgColor=#ffffff> <DIV><FONT face=Arial size=2>Is there anyway of determining the colour at a given position from a linear gradiant. Say for example I have</FONT></DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><FONT face=Arial size=2>pat = cairo_pattern_create_linear (0.0, 0,  Width, 0);<BR>cairo_pattern_add_color_stop_rgba (pat, 0, 1, 0, 0, 1);<BR>cairo_pattern_add_color_stop_rgba (pat, 1, 0, 0, 0, 1);</FONT></DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><FONT face=Arial size=2>I would like to just question cairo the colour value at a given position with something like</FONT></DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><FONT face=Arial size=2>cairo_pattern_get_color_from_gradient(pat,0.5);</FONT></DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><FONT face=Arial size=2>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.</FONT></DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><FONT face=Arial size=2>Mick</FONT></DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><FONT face=Arial size=2></FONT> </DIV></BODY></HTML>