Add back lighting system

[irrlicht.git] / source / Irrlicht / CShadowVolumeSceneNode.h

diff --git a/source/Irrlicht/CShadowVolumeSceneNode.h b/source/Irrlicht/CShadowVolumeSceneNode.h
new file mode 100644 (file)
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--- /dev/null
+++ b/source/Irrlicht/CShadowVolumeSceneNode.h
@@ -0,0 +1,99 @@
+// Copyright (C) 2002-2012 Nikolaus Gebhardt\r
+// This file is part of the "Irrlicht Engine".\r
+// For conditions of distribution and use, see copyright notice in irrlicht.h\r
+\r
+#ifndef IRR_C_SHADOW_VOLUME_SCENE_NODE_H_INCLUDED\r
+#define IRR_C_SHADOW_VOLUME_SCENE_NODE_H_INCLUDED\r
+\r
+#include "IShadowVolumeSceneNode.h"\r
+\r
+namespace irr\r
+{\r
+namespace scene\r
+{\r
+\r
+       //! Scene node for rendering a shadow volume into a stencil buffer.\r
+       class CShadowVolumeSceneNode : public IShadowVolumeSceneNode\r
+       {\r
+       public:\r
+\r
+               //! constructor\r
+               CShadowVolumeSceneNode(const IMesh* shadowMesh, ISceneNode* parent, ISceneManager* mgr,\r
+                       s32 id, bool zfailmethod=true, f32 infinity=10000.0f);\r
+\r
+               //! destructor\r
+               virtual ~CShadowVolumeSceneNode();\r
+\r
+               //! Sets the mesh from which the shadow volume should be generated.\r
+               /** To optimize shadow rendering, use a simpler mesh for shadows.\r
+               */\r
+               virtual void setShadowMesh(const IMesh* mesh) override;\r
+\r
+               //! Updates the shadow volumes for current light positions.\r
+               /** Called each render cycle from Animated Mesh SceneNode render method. */\r
+               virtual void updateShadowVolumes() override;\r
+\r
+               //! Set optimization used to create shadow volumes\r
+               /** Default is ESV_SILHOUETTE_BY_POS. If the shadow \r
+               looks bad then give ESV_NONE a try (which will be slower). */\r
+               virtual void setOptimization(ESHADOWVOLUME_OPTIMIZATION optimization) override;\r
+\r
+               //! Get currently active optimization used to create shadow volumes\r
+               virtual ESHADOWVOLUME_OPTIMIZATION getOptimization() const override\r
+               {\r
+                       return Optimization;\r
+               }\r
+\r
+               //! pre render method\r
+               virtual void OnRegisterSceneNode() override;\r
+\r
+               //! renders the node.\r
+               virtual void render() override;\r
+\r
+               //! returns the axis aligned bounding box of this node\r
+               virtual const core::aabbox3d<f32>& getBoundingBox() const override;\r
+\r
+               //! Returns type of the scene node\r
+               virtual ESCENE_NODE_TYPE getType() const override { return ESNT_SHADOW_VOLUME; }\r
+\r
+       private:\r
+\r
+               typedef core::array<core::vector3df> SShadowVolume;\r
+\r
+               void createShadowVolume(const core::vector3df& pos, bool isDirectional);\r
+               u32 createEdgesAndCaps(const core::vector3df& light, bool isDirectional, SShadowVolume* svp, core::aabbox3d<f32>* bb);\r
+\r
+               //! Generates adjacency information based on mesh indices.\r
+               void calculateAdjacency();\r
+\r
+               core::aabbox3d<f32> Box;\r
+\r
+               // a shadow volume for every light\r
+               core::array<SShadowVolume> ShadowVolumes;\r
+\r
+               // a back cap bounding box for every light\r
+               core::array<core::aabbox3d<f32> > ShadowBBox;\r
+\r
+               core::array<core::vector3df> Vertices;\r
+               core::array<u16> Indices;\r
+               core::array<u16> Adjacency;\r
+               core::array<u16> Edges;\r
+               // tells if face is front facing\r
+               std::vector<bool> FaceData;\r
+               bool AdjacencyDirtyFlag;\r
+\r
+               const scene::IMesh* ShadowMesh;\r
+\r
+               u32 IndexCount;\r
+               u32 VertexCount;\r
+               u32 ShadowVolumesUsed;\r
+\r
+               f32 Infinity;\r
+               bool UseZFailMethod;\r
+               ESHADOWVOLUME_OPTIMIZATION Optimization;\r
+       };\r
+\r
+} // end namespace scene\r
+} // end namespace irr\r
+\r
+#endif\r