
double x=0.1, y=0.5; double x1=0.4, y1=0.9, x2=0.6, y2=0.1, x3=0.9, y3=0.5; cairo_move_to (cr, x, y); cairo_curve_to (cr, x1, y1, x2, y2, x3, y3); cairo_stroke (cr); cairo_set_rgb_color (cr, 1,0.2,0.2); cairo_set_alpha (cr, 0.6); cairo_set_line_width (cr, 0.03); cairo_move_to (cr,x,y); cairo_line_to (cr,x1,y1); cairo_move_to (cr,x2,y2); cairo_line_to (cr,x3,y3); cairo_stroke (cr);