--- /dev/null
+/*
+Copyright (C) 2001-2006, William Joseph.
+All Rights Reserved.
+
+This file is part of GtkRadiant.
+
+GtkRadiant 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.
+
+GtkRadiant 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 GtkRadiant; if not, write to the Free Software
+Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+*/
+
+#if !defined(INCLUDED_RENDERER_H)
+#define INCLUDED_RENDERER_H
+
+#include "irender.h"
+#include "renderable.h"
+#include "iselection.h"
+#include "cullable.h"
+#include "scenelib.h"
+#include "math/frustum.h"
+#include <vector>
+
+inline Cullable* Instance_getCullable(scene::Instance& instance)
+{
+ return InstanceTypeCast<Cullable>::cast(instance);
+}
+
+inline Renderable* Instance_getRenderable(scene::Instance& instance)
+{
+ return InstanceTypeCast<Renderable>::cast(instance);
+}
+
+inline VolumeIntersectionValue Cullable_testVisible(scene::Instance& instance, const VolumeTest& volume, VolumeIntersectionValue parentVisible)
+{
+ if(parentVisible == c_volumePartial)
+ {
+ Cullable* cullable = Instance_getCullable(instance);
+ if(cullable != 0)
+ {
+ return cullable->intersectVolume(volume, instance.localToWorld());
+ }
+ }
+ return parentVisible;
+}
+
+template<typename _Walker>
+class CullingWalker
+{
+ const VolumeTest& m_volume;
+ const _Walker& m_walker;
+public:
+ CullingWalker(const VolumeTest& volume, const _Walker& walker)
+ : m_volume(volume), m_walker(walker)
+ {
+ }
+ bool pre(const scene::Path& path, scene::Instance& instance, VolumeIntersectionValue parentVisible) const
+ {
+ VolumeIntersectionValue visible = Cullable_testVisible(instance, m_volume, parentVisible);
+ if(visible != c_volumeOutside)
+ {
+ return m_walker.pre(path, instance);
+ }
+ return true;
+ }
+ void post(const scene::Path& path, scene::Instance& instance, VolumeIntersectionValue parentVisible) const
+ {
+ return m_walker.post(path, instance);
+ }
+};
+
+template<typename Walker_>
+class ForEachVisible : public scene::Graph::Walker
+{
+ const VolumeTest& m_volume;
+ const Walker_& m_walker;
+ mutable std::vector<VolumeIntersectionValue> m_state;
+public:
+ ForEachVisible(const VolumeTest& volume, const Walker_& walker)
+ : m_volume(volume), m_walker(walker)
+ {
+ m_state.push_back(c_volumePartial);
+ }
+ bool pre(const scene::Path& path, scene::Instance& instance) const
+ {
+ VolumeIntersectionValue visible = (path.top().get().visible()) ? m_state.back() : c_volumeOutside;
+
+ if(visible == c_volumePartial)
+ {
+ visible = m_volume.TestAABB(instance.worldAABB());
+ }
+
+ m_state.push_back(visible);
+
+ if(visible == c_volumeOutside)
+ {
+ return false;
+ }
+ else
+ {
+ return m_walker.pre(path, instance, m_state.back());
+ }
+ }
+ void post(const scene::Path& path, scene::Instance& instance) const
+ {
+ if(m_state.back() != c_volumeOutside)
+ {
+ m_walker.post(path, instance, m_state.back());
+ }
+
+ m_state.pop_back();
+ }
+};
+
+template<typename Functor>
+inline void Scene_forEachVisible(scene::Graph& graph, const VolumeTest& volume, const Functor& functor)
+{
+ graph.traverse(ForEachVisible< CullingWalker<Functor> >(volume, CullingWalker<Functor>(volume, functor)));
+}
+
+class RenderHighlighted
+{
+ Renderer& m_renderer;
+ const VolumeTest& m_volume;
+public:
+ RenderHighlighted(Renderer& renderer, const VolumeTest& volume)
+ : m_renderer(renderer), m_volume(volume)
+ {
+ }
+ void render(const Renderable& renderable) const
+ {
+ switch(m_renderer.getStyle())
+ {
+ case Renderer::eFullMaterials:
+ renderable.renderSolid(m_renderer, m_volume);
+ break;
+ case Renderer::eWireframeOnly:
+ renderable.renderWireframe(m_renderer, m_volume);
+ break;
+ }
+ }
+ typedef ConstMemberCaller1<RenderHighlighted, const Renderable&, &RenderHighlighted::render> RenderCaller;
+
+ bool pre(const scene::Path& path, scene::Instance& instance, VolumeIntersectionValue parentVisible) const
+ {
+ m_renderer.PushState();
+
+ if(Cullable_testVisible(instance, m_volume, parentVisible) != c_volumeOutside)
+ {
+ Renderable* renderable = Instance_getRenderable(instance);
+ if(renderable)
+ {
+ renderable->viewChanged();
+ }
+
+ Selectable* selectable = Instance_getSelectable(instance);
+ if(selectable != 0 && selectable->isSelected())
+ {
+ if(GlobalSelectionSystem().Mode() != SelectionSystem::eComponent)
+ {
+ m_renderer.Highlight(Renderer::eFace);
+ }
+ else if(renderable)
+ {
+ renderable->renderComponents(m_renderer, m_volume);
+ }
+ m_renderer.Highlight(Renderer::ePrimitive);
+ }
+
+ if(renderable)
+ {
+ render(*renderable);
+ }
+ }
+
+ return true;
+ }
+ void post(const scene::Path& path, scene::Instance& instance, VolumeIntersectionValue parentVisible) const
+ {
+ m_renderer.PopState();
+ }
+};
+
+inline void Scene_Render(Renderer& renderer, const VolumeTest& volume)
+{
+ GlobalSceneGraph().traverse(ForEachVisible<RenderHighlighted>(volume, RenderHighlighted(renderer, volume)));
+ GlobalShaderCache().forEachRenderable(RenderHighlighted::RenderCaller(RenderHighlighted(renderer, volume)));
+}
+
+#endif