32                       float x4, float y4)  in init()  argument
37     bezier(x1, y1, x2, y2, x3, y3, x4, y4);  in init()
43                                   float x4, float y4,  in recursive_bezier()  argument
53     float x34   = (x3 + x4) / 2;  in recursive_bezier()
61     float dx = x4 - x1;  in recursive_bezier()
63     float d2 = fabs(((x2 - x4) * dy) - ((y2 - y4) * dx));  in recursive_bezier()
64     float d3 = fabs(((x3 - x4) * dy) - ((y3 - y4) * dx));  in recursive_bezier()
69                   fabs(x2 + x4 - x3 - x3) + fabs(y2 + y4 - y3 - y3) <=  in recursive_bezier()
98     recursive_bezier(x1234, y1234, x234, y234, x34, y34, x4, y4, level + 1);  in recursive_bezier()
103                         float x4, float y4)  in bezier()  argument
106     recursive_bezier(x1, y1, x2, y2, x3, y3, x4, y4, 0);  in bezier()
107     m_points.add(point_type(x4, y4));  in bezier()