Change Scene into an abstract base class and add a few subclasses

[libs/gl.git] / source / orderedscene.cpp

diff --git a/source/orderedscene.cpp b/source/orderedscene.cpp
new file mode 100644 (file)
index 0000000..38edf69
--- /dev/null
+++ b/source/orderedscene.cpp
@@ -0,0 +1,51 @@
+/* $Id$
+
+This file is part of libmspgl
+Copyright © 2010  Mikko Rasa, Mikkosoft Productions
+Distributed under the LGPL
+*/
+
+#include <algorithm>
+#include "orderedscene.h"
+
+namespace Msp {
+namespace GL {
+
+void OrderedScene::add(const Renderable &r)
+{
+       renderables.push_back(&r);
+}
+
+void OrderedScene::remove(const Renderable &r)
+{
+       RenderableList::iterator end = std::remove(renderables.begin(), renderables.end(), &r);
+       renderables.erase(end, renderables.end());
+}
+
+void OrderedScene::prepend(const Renderable &r)
+{
+       renderables.push_front(&r);
+}
+
+void OrderedScene::insert(unsigned index, const Renderable &r)
+{
+       RenderableList::iterator i = renderables.begin();
+       for(; (i!=renderables.end() && index); ++i, --index) ;
+       renderables.insert(i, &r);
+}
+
+void OrderedScene::insert_after(const Renderable &after, const Renderable &r)
+{
+       RenderableList::iterator i = renderables.begin();
+       for(; (i!=renderables.end() && *i!=&after); ++i) ;
+       renderables.insert(i, &r);
+}
+
+void OrderedScene::render(const Tag &tag) const
+{
+       for(RenderableList::const_iterator i=renderables.begin(); i!=renderables.end(); ++i)
+               (*i)->render(tag);
+}
+
+} // namespace GL
+} // namespace Msp