+/*
+ Copyright (C) 2011-2013 Paul Davis
+ Author: Carl Hetherington <cth@carlh.net>
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
#include <algorithm>
-#include "pbd/xml++.h"
#include "pbd/compose.h"
#include "canvas/poly_item.h"
PolyItem::compute_bounding_box () const
{
bool have_one = false;
-
Rect bbox;
for (Points::const_iterator i = _points.begin(); i != _points.end(); ++i) {
}
void
-PolyItem::render_path (Rect const & /*area*/, Cairo::RefPtr<Cairo::Context> context) const
+PolyItem::render_path (Rect const & /* area */, Cairo::RefPtr<Cairo::Context> context) const
{
- 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;
}
}
return _points;
}
-void
-PolyItem::add_poly_item_state (XMLNode* node) const
-{
- add_item_state (node);
-
- for (Points::const_iterator i = _points.begin(); i != _points.end(); ++i) {
- XMLNode* p = new XMLNode ("Point");
- p->add_property ("x", string_compose ("%1", i->x));
- p->add_property ("y", string_compose ("%1", i->y));
- node->add_child_nocopy (*p);
- }
-}
-
-void
-PolyItem::set_poly_item_state (XMLNode const * node)
-{
- XMLNodeList const & children = node->children ();
- for (XMLNodeList::const_iterator i = children.begin(); i != children.end(); ++i) {
- Duple p;
- p.x = atof ((*i)->property("x")->value().c_str());
- p.y = atof ((*i)->property("y")->value().c_str());
- _points.push_back (p);
- }
-
- _bounding_box_dirty = true;
-}
-
void
PolyItem::dump (ostream& o) const
{