- bool done_first = false;
- for (Points::const_iterator i = _points.begin(); i != _points.end(); ++i) {
- if (done_first) {
- context->line_to (i->x, i->y);
- } else {
- context->move_to (i->x, i->y);
- done_first = true;
- }
+ if (_points.size() < 2) {
+ return;
+ }
+
+ Points::const_iterator i = _points.begin();
+ Duple c (item_to_window (Duple (i->x, i->y)));
+
+ context->move_to (c.x, c.y);
+ ++i;
+
+ while (i != _points.end()) {
+ c = item_to_window (Duple (i->x, i->y));
+ context->line_to (c.x, c.y);
+ ++i;
+ }
+}
+
+void
+PolyItem::render_curve (Rect const & area, Cairo::RefPtr<Cairo::Context> context, Points const & first_control_points, Points const & second_control_points) const
+{
+ if (_points.size() <= 2) {
+ render_path (area, context);
+ return;
+ }
+
+ Points::const_iterator cp1 = first_control_points.begin();
+ Points::const_iterator cp2 = second_control_points.begin();
+ Points::const_iterator p = _points.begin();
+
+ Duple c = item_to_window (Duple (p->x, p->y));
+ context->move_to (c.x, c.y);
+ ++p;
+
+ while (p != _points.end()) {
+
+ Duple c1 = item_to_window (Duple (cp1->x, cp1->y));
+ Duple c2 = item_to_window (Duple (cp2->x, cp2->y));
+
+ c = item_to_window (Duple (p->x, p->y));
+
+ context->curve_to (c1.x, c1.y, c2.x, c2.y, c.x, c.y);
+
+ ++cp1;
+ ++cp2;
+ ++p;