# OgreStaticGeometry.h

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    00001 /*
    00002 -----------------------------------------------------------------------------
    00003 This source file is part of OGRE
    00004 (Object-oriented Graphics Rendering Engine)
    00005 For the latest info, see http://www.ogre3d.org/
    00006
    00007 Copyright (c) 2000-2006 Torus Knot Software Ltd
    00008 Also see acknowledgements in Readme.html
    00009
    00010 This program is free software; you can redistribute it and/or modify it under
    00011 the terms of the GNU Lesser General Public License as published by the Free Software
    00012 Foundation; either version 2 of the License, or (at your option) any later
    00013 version.
    00014
    00015 This program is distributed in the hope that it will be useful, but WITHOUT
    00016 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
    00017 FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
    00018
    00019 You should have received a copy of the GNU Lesser General Public License along with
    00020 this program; if not, write to the Free Software Foundation, Inc., 59 Temple
    00021 Place - Suite 330, Boston, MA 02111-1307, USA, or go to
    00022 http://www.gnu.org/copyleft/lesser.txt.
    00023
    00024 You may alternatively use this source under the terms of a specific version of
    00025 the OGRE Unrestricted License provided you have obtained such a license from
    00026 Torus Knot Software Ltd.
    00027 -----------------------------------------------------------------------------
    00028 */
    00029 #ifndef __StaticGeometry_H__
    00030 #define __StaticGeometry_H__
    00031
    00032 #include "OgrePrerequisites.h"
    00033 #include "OgreMovableObject.h"
    00034 #include "OgreRenderable.h"
    00035
    00036 namespace Ogre {
    00037
    00113     class _OgreExport StaticGeometry : public BatchedGeometryAlloc
    00114     {
    00115     public:
    00128         class _OgrePrivate OptimisedSubMeshGeometry : public BatchedGeometryAlloc
    00129         {
    00130         public:
    00131             OptimisedSubMeshGeometry() :vertexData(0), indexData(0) {}
    00132             ~OptimisedSubMeshGeometry()
    00133             {
    00134                 OGRE_DELETE vertexData;
    00135                 OGRE_DELETE indexData;
    00136             }
    00137             VertexData *vertexData;
    00138             IndexData *indexData;
    00139         };
    00140         typedef std::list<OptimisedSubMeshGeometry*> OptimisedSubMeshGeometryList;
    00143         struct SubMeshLodGeometryLink
    00144         {
    00145             VertexData* vertexData;
    00146             IndexData* indexData;
    00147         };
    00148         typedef std::vector<SubMeshLodGeometryLink> SubMeshLodGeometryLinkList;
    00149         typedef std::map<SubMesh*, SubMeshLodGeometryLinkList*> SubMeshGeometryLookup;
    00151         struct QueuedSubMesh : public BatchedGeometryAlloc
    00152         {
    00153             SubMesh* submesh;
    00155             SubMeshLodGeometryLinkList* geometryLodList;
    00156             String materialName;
    00157             Vector3 position;
    00158             Quaternion orientation;
    00159             Vector3 scale;
    00161             AxisAlignedBox worldBounds;
    00162         };
    00163         typedef std::vector<QueuedSubMesh*> QueuedSubMeshList;
    00165         struct QueuedGeometry : public BatchedGeometryAlloc
    00166         {
    00167             SubMeshLodGeometryLink* geometry;
    00168             Vector3 position;
    00169             Quaternion orientation;
    00170             Vector3 scale;
    00171         };
    00172         typedef std::vector<QueuedGeometry*> QueuedGeometryList;
    00173
    00174         // forward declarations
    00175         class LODBucket;
    00176         class MaterialBucket;
    00177         class Region;
    00178
    00183         class _OgreExport GeometryBucket :  public Renderable,  public BatchedGeometryAlloc
    00184         {
    00185         protected:
    00187             QueuedGeometryList mQueuedGeometry;
    00189             MaterialBucket* mParent;
    00191             String mFormatString;
    00194             VertexData* mVertexData;
    00197             IndexData* mIndexData;
    00199             HardwareIndexBuffer::IndexType mIndexType;
    00201             size_t mMaxVertexIndex;
    00202
    00203             template<typename T>
    00204             void copyIndexes(const T* src, T* dst, size_t count, size_t indexOffset)
    00205             {
    00206                 if (indexOffset == 0)
    00207                 {
    00208                     memcpy(dst, src, sizeof(T) * count);
    00209                 }
    00210                 else
    00211                 {
    00212                     while(count--)
    00213                     {
    00214                         *dst++ = static_cast<T>(*src++ + indexOffset);
    00215                     }
    00216                 }
    00217             }
    00218         public:
    00219             GeometryBucket(MaterialBucket* parent, const String& formatString,
    00220                 const VertexData* vData, const IndexData* iData);
    00221             virtual ~GeometryBucket();
    00222             MaterialBucket* getParent(void) { return mParent; }
    00224             const VertexData* getVertexData(void) const { return mVertexData; }
    00226             const IndexData* getIndexData(void) const { return mIndexData; }
    00228             const MaterialPtr& getMaterial(void) const;
    00229             Technique* getTechnique(void) const;
    00230             void getRenderOperation(RenderOperation& op);
    00231             void getWorldTransforms(Matrix4* xform) const;
    00232             Real getSquaredViewDepth(const Camera* cam) const;
    00233             const LightList& getLights(void) const;
    00234             bool getCastsShadows(void) const;
    00235
    00239             bool assign(QueuedGeometry* qsm);
    00241             void build(bool stencilShadows);
    00243             void dump(std::ofstream& of) const;
    00244         };
    00247         class _OgreExport MaterialBucket : public BatchedGeometryAlloc
    00248         {
    00249         public:
    00251             typedef std::vector<GeometryBucket*> GeometryBucketList;
    00252         protected:
    00254             LODBucket* mParent;
    00256             String mMaterialName;
    00258             MaterialPtr mMaterial;
    00260             Technique* mTechnique;
    00261
    00263             GeometryBucketList mGeometryBucketList;
    00264             // index to current Geometry Buckets for a given geometry format
    00265             typedef std::map<String, GeometryBucket*> CurrentGeometryMap;
    00266             CurrentGeometryMap mCurrentGeometryMap;
    00268             String getGeometryFormatString(SubMeshLodGeometryLink* geom);
    00269
    00270         public:
    00271             MaterialBucket(LODBucket* parent, const String& materialName);
    00272             virtual ~MaterialBucket();
    00273             LODBucket* getParent(void) { return mParent; }
    00275             const String& getMaterialName(void) const { return mMaterialName; }
    00277             void assign(QueuedGeometry* qsm);
    00279             void build(bool stencilShadows);
    00281             void addRenderables(RenderQueue* queue, uint8 group,
    00282                 Real camSquaredDist);
    00284             const MaterialPtr& getMaterial(void) const { return mMaterial; }
    00286             typedef VectorIterator<GeometryBucketList> GeometryIterator;
    00288             GeometryIterator getGeometryIterator(void);
    00290             Technique* getCurrentTechnique(void) const { return mTechnique; }
    00292             void dump(std::ofstream& of) const;
    00293             void visitRenderables(Renderable::Visitor* visitor, bool debugRenderables);
    00294         };
    00300         class _OgreExport LODBucket : public BatchedGeometryAlloc
    00301         {
    00302         public:
    00304             typedef std::map<String, MaterialBucket*> MaterialBucketMap;
    00305         protected:
    00307             class _OgreExport LODShadowRenderable : public ShadowRenderable
    00308             {
    00309             protected:
    00310                 LODBucket* mParent;
    00311                 // Shared link to position buffer
    00312                 HardwareVertexBufferSharedPtr mPositionBuffer;
    00313                 // Shared link to w-coord buffer (optional)
    00314                 HardwareVertexBufferSharedPtr mWBuffer;
    00315
    00316             public:
    00317                 LODShadowRenderable(LODBucket* parent,
    00318                     HardwareIndexBufferSharedPtr* indexBuffer, const VertexData* vertexData,
    00319                     bool createSeparateLightCap, bool isLightCap = false);
    00320                 ~LODShadowRenderable();
    00322                 void getWorldTransforms(Matrix4* xform) const;
    00323                 HardwareVertexBufferSharedPtr getPositionBuffer(void) { return mPositionBuffer; }
    00324                 HardwareVertexBufferSharedPtr getWBuffer(void) { return mWBuffer; }
    00325
    00326             };
    00328             Region* mParent;
    00330             unsigned short mLod;
    00332             Real mSquaredDistance;
    00334             MaterialBucketMap mMaterialBucketMap;
    00336             QueuedGeometryList mQueuedGeometryList;
    00338             EdgeData* mEdgeList;
    00340             bool mVertexProgramInUse;
    00342             ShadowCaster::ShadowRenderableList mShadowRenderables;
    00343         public:
    00344             LODBucket(Region* parent, unsigned short lod, Real lodDist);
    00345             virtual ~LODBucket();
    00346             Region* getParent(void) { return mParent; }
    00348             ushort getLod(void) const { return mLod; }
    00350             Real getSquaredDistance(void) const { return mSquaredDistance; }
    00352             void assign(QueuedSubMesh* qsm, ushort atLod);
    00354             void build(bool stencilShadows);
    00356             void addRenderables(RenderQueue* queue, uint8 group,
    00357                 Real camSquaredDistance);
    00359             typedef MapIterator<MaterialBucketMap> MaterialIterator;
    00361             MaterialIterator getMaterialIterator(void);
    00363             void dump(std::ofstream& of) const;
    00364             void visitRenderables(Renderable::Visitor* visitor, bool debugRenderables);
    00365             EdgeData* getEdgeList() const { return mEdgeList; }
    00366             ShadowCaster::ShadowRenderableList& getShadowRenderableList() { return mShadowRenderables; }
    00367             bool isVertexProgramInUse() const { return mVertexProgramInUse; }
    00368             void updateShadowRenderables(
    00369                 ShadowTechnique shadowTechnique, const Vector4& lightPos,
    00370                 HardwareIndexBufferSharedPtr* indexBuffer,
    00371                 bool extrudeVertices, Real extrusionDistance, unsigned long flags = 0 );
    00372
    00373         };
    00382         class _OgreExport Region : public MovableObject
    00383         {
    00384         public:
    00386             typedef std::vector<LODBucket*> LODBucketList;
    00387         protected:
    00389             StaticGeometry* mParent;
    00391             SceneManager* mSceneMgr;
    00393             SceneNode* mNode;
    00395             QueuedSubMeshList mQueuedSubMeshes;
    00397             uint32 mRegionID;
    00399             Vector3 mCentre;
    00401             std::vector<Real> mLodSquaredDistances;
    00403             AxisAlignedBox mAABB;
    00405             Real mBoundingRadius;
    00407             ushort mCurrentLod;
    00409             Real mCamDistanceSquared;
    00411             LODBucketList mLodBucketList;
    00413             mutable LightList mLightList;
    00415             mutable ulong mLightListUpdated;
    00416
    00417
    00418
    00419         public:
    00420             Region(StaticGeometry* parent, const String& name, SceneManager* mgr,
    00421                 uint32 regionID, const Vector3& centre);
    00422             virtual ~Region();
    00423             // more fields can be added in subclasses
    00424             StaticGeometry* getParent(void) const { return mParent;}
    00426             void assign(QueuedSubMesh* qmesh);
    00428             void build(bool stencilShadows);
    00430             uint32 getID(void) const { return mRegionID; }
    00432             const Vector3& getCentre(void) const { return mCentre; }
    00433             const String& getMovableType(void) const;
    00434             void _notifyCurrentCamera(Camera* cam);
    00435             const AxisAlignedBox& getBoundingBox(void) const;
    00436             Real getBoundingRadius(void) const;
    00437             void _updateRenderQueue(RenderQueue* queue);
    00439             void visitRenderables(Renderable::Visitor* visitor,
    00440                 bool debugRenderables = false);
    00441             bool isVisible(void) const;
    00442             uint32 getTypeFlags(void) const;
    00443
    00444             typedef VectorIterator<LODBucketList> LODIterator;
    00446             LODIterator getLODIterator(void);
    00448             ShadowRenderableListIterator getShadowVolumeRenderableIterator(
    00449                 ShadowTechnique shadowTechnique, const Light* light,
    00450                 HardwareIndexBufferSharedPtr* indexBuffer,
    00451                 bool extrudeVertices, Real extrusionDistance, unsigned long flags = 0 );
    00453             EdgeData* getEdgeList(void);
    00455             bool hasEdgeList(void);
    00456
    00458             void dump(std::ofstream& of) const;
    00459
    00460         };
    00468         typedef std::map<uint32, Region*> RegionMap;
    00469     protected:
    00470         // General state & settings
    00471         SceneManager* mOwner;
    00472         String mName;
    00473         bool mBuilt;
    00474         Real mUpperDistance;
    00475         Real mSquaredUpperDistance;
    00476         bool mCastShadows;
    00477         Vector3 mRegionDimensions;
    00478         Vector3 mHalfRegionDimensions;
    00479         Vector3 mOrigin;
    00480         bool mVisible;
    00482         uint8 mRenderQueueID;
    00484         bool mRenderQueueIDSet;
    00485
    00486         QueuedSubMeshList mQueuedSubMeshes;
    00487
    00490         OptimisedSubMeshGeometryList mOptimisedSubMeshGeometryList;
    00491
    00496         SubMeshGeometryLookup mSubMeshGeometryLookup;
    00497
    00499         RegionMap mRegionMap;
    00500
    00504         virtual Region* getRegion(const AxisAlignedBox& bounds, bool autoCreate);
    00506         virtual Region* getRegion(const Vector3& point, bool autoCreate);
    00508         virtual Region* getRegion(ushort x, ushort y, ushort z, bool autoCreate);
    00510         virtual Region* getRegion(uint32 index);
    00513         virtual void getRegionIndexes(const Vector3& point,
    00514             ushort& x, ushort& y, ushort& z);
    00517         virtual uint32 packIndex(ushort x, ushort y, ushort z);
    00520         virtual Real getVolumeIntersection(const AxisAlignedBox& box,
    00521             ushort x, ushort y, ushort z);
    00524         virtual AxisAlignedBox getRegionBounds(ushort x, ushort y, ushort z);
    00527         virtual Vector3 getRegionCentre(ushort x, ushort y, ushort z);
    00529         virtual AxisAlignedBox calculateBounds(VertexData* vertexData,
    00530             const Vector3& position, const Quaternion& orientation,
    00531             const Vector3& scale);
    00533         SubMeshLodGeometryLinkList* determineGeometry(SubMesh* sm);
    00535         void splitGeometry(VertexData* vd, IndexData* id,
    00536             SubMeshLodGeometryLink* targetGeomLink);
    00537
    00538         typedef std::map<size_t, size_t> IndexRemap;
    00543         template <typename T>
    00544         void buildIndexRemap(T* pBuffer, size_t numIndexes, IndexRemap& remap)
    00545         {
    00546             remap.clear();
    00547             for (size_t i = 0; i < numIndexes; ++i)
    00548             {
    00549                 // use insert since duplicates are silently discarded
    00550                 remap.insert(IndexRemap::value_type(*pBuffer++, remap.size()));
    00551                 // this will have mapped oldindex -> new index IF oldindex
    00552                 // wasn't already there
    00553             }
    00554         }
    00556         template <typename T>
    00557         void remapIndexes(T* src, T* dst, const IndexRemap& remap,
    00558                 size_t numIndexes)
    00559         {
    00560             for (size_t i = 0; i < numIndexes; ++i)
    00561             {
    00562                 // look up original and map to target
    00563                 IndexRemap::const_iterator ix = remap.find(*src++);
    00564                 assert(ix != remap.end());
    00565                 *dst++ = static_cast<T>(ix->second);
    00566             }
    00567         }
    00568
    00569     public:
    00571         StaticGeometry(SceneManager* owner, const String& name);
    00573         virtual ~StaticGeometry();
    00574
    00576         const String& getName(void) const { return mName; }
    00595         virtual void addEntity(Entity* ent, const Vector3& position,
    00596             const Quaternion& orientation = Quaternion::IDENTITY,
    00597             const Vector3& scale = Vector3::UNIT_SCALE);
    00598
    00617         virtual void addSceneNode(const SceneNode* node);
    00618
    00629         virtual void build(void);
    00630
    00636         virtual void destroy(void);
    00637
    00641         virtual void reset(void);
    00642
    00652         virtual void setRenderingDistance(Real dist) {
    00653             mUpperDistance = dist;
    00654             mSquaredUpperDistance = mUpperDistance * mUpperDistance;
    00655         }
    00656
    00658         virtual Real getRenderingDistance(void) const { return mUpperDistance; }
    00659
    00661         virtual Real getSquaredRenderingDistance(void) const
    00662         { return mSquaredUpperDistance; }
    00663
    00665         virtual void setVisible(bool visible);
    00666
    00668         virtual bool isVisible(void) const { return mVisible; }
    00669
    00687         virtual void setCastShadows(bool castShadows);
    00689         virtual bool getCastShadows(void) { return mCastShadows; }
    00690
    00701         virtual void setRegionDimensions(const Vector3& size) {
    00702             mRegionDimensions = size;
    00703             mHalfRegionDimensions = size * 0.5;
    00704         }
    00706         virtual const Vector3& getRegionDimensions(void) const { return mRegionDimensions; }
    00718         virtual void setOrigin(const Vector3& origin) { mOrigin = origin; }
    00720         virtual const Vector3& getOrigin(void) const { return mOrigin; }
    00721
    00733         virtual void setRenderQueueGroup(uint8 queueID);
    00734
    00736         virtual uint8 getRenderQueueGroup(void) const;
    00738         void visitRenderables(Renderable::Visitor* visitor,
    00739             bool debugRenderables = false);
    00740
    00742         typedef MapIterator<RegionMap> RegionIterator;
    00744         RegionIterator getRegionIterator(void);
    00745
    00749         virtual void dump(const String& filename) const;
    00750
    00751
    00752     };
    00753
    00754 }
    00755
    00756 #endif
    00757

Copyright © 2008 Torus Knot Software Ltd
This work is licensed under a Creative Commons Attribution-ShareAlike 2.5 License.
Last modified Sat Apr 11 13:46:43 2009