- context->move_to (p0.x + 0.5, p0.y + 0.5);
- context->line_to (p1.x + 0.5, p1.y + 0.5);
+ const Duple half_a_pixel (0.5, 0.5);
+ p0 = p0.translate (half_a_pixel);
+ p1 = p1.translate (half_a_pixel);
+ }
+
+ context->move_to (p0.x, p0.y);
+ context->line_to (p1.x, p1.y);