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 © 2000-2003 The OGRE Team 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 */ 00025 #ifndef __Frustum_H__ 00026 #define __Frustum_H__ 00027 00028 #include "OgrePrerequisites.h" 00029 #include "OgreMovableObject.h" 00030 #include "OgreRenderable.h" 00031 #include "OgreAxisAlignedBox.h" 00032 #include "OgreVertexIndexData.h" 00033 00034 namespace Ogre 00035 { 00038 enum ProjectionType 00039 { 00040 PT_ORTHOGRAPHIC, 00041 PT_PERSPECTIVE 00042 }; 00043 00046 enum FrustumPlane 00047 { 00048 FRUSTUM_PLANE_NEAR = 0, 00049 FRUSTUM_PLANE_FAR = 1, 00050 FRUSTUM_PLANE_LEFT = 2, 00051 FRUSTUM_PLANE_RIGHT = 3, 00052 FRUSTUM_PLANE_TOP = 4, 00053 FRUSTUM_PLANE_BOTTOM = 5 00054 }; 00055 00060 class _OgreExport Frustum : public MovableObject, public Renderable 00061 { 00062 protected: 00064 ProjectionType mProjType; 00065 00067 Real mFOVy; 00069 Real mFarDist; 00071 Real mNearDist; 00073 Real mAspect; 00074 00076 mutable Plane mFrustumPlanes[6]; 00077 00079 mutable Quaternion mLastParentOrientation; 00080 mutable Vector3 mLastParentPosition; 00081 00083 mutable Matrix4 mProjMatrix; 00085 mutable Matrix4 mStandardProjMatrix; 00087 mutable Matrix4 mViewMatrix; 00089 mutable bool mRecalcFrustum; 00091 mutable bool mRecalcView; 00092 00093 00097 mutable Real mCoeffL[2], mCoeffR[2], mCoeffB[2], mCoeffT[2]; 00098 00099 00100 // Internal functions for calcs 00101 virtual void updateFrustum(void) const; 00102 virtual void updateView(void) const; 00103 virtual bool isViewOutOfDate(void) const; 00104 virtual bool isFrustumOutOfDate(void) const; 00106 virtual void invalidateFrustum(void); 00108 virtual void invalidateView(void); 00109 00111 static String msMovableType; 00112 00113 mutable AxisAlignedBox mBoundingBox; 00114 mutable VertexData mVertexData; 00115 00116 Material* mMaterial; 00117 mutable Vector3 mWorldSpaceCorners[8]; 00118 00120 bool mReflect; 00121 Matrix4 mReflectMatrix; 00122 Plane mReflectPlane; 00123 00125 virtual const Vector3& getPositionForViewUpdate(void) const; 00127 virtual const Quaternion& getOrientationForViewUpdate(void) const; 00128 00129 00130 public: 00131 00132 Frustum(); 00133 virtual ~Frustum(); 00146 virtual void setFOVy(Real fovy); 00147 00150 virtual Real getFOVy(void) const; 00151 00163 virtual void setNearClipDistance(Real nearDist); 00164 00167 virtual Real getNearClipDistance(void) const; 00168 00189 virtual void setFarClipDistance(Real farDist); 00190 00193 virtual Real getFarClipDistance(void) const; 00194 00203 virtual void setAspectRatio(Real ratio); 00204 00207 virtual Real getAspectRatio(void) const; 00208 00216 virtual const Matrix4& getProjectionMatrix(void) const; 00228 virtual const Matrix4& getStandardProjectionMatrix(void) const; 00229 00232 virtual const Matrix4& getViewMatrix(void) const; 00233 00238 virtual const Plane& getFrustumPlane( unsigned short plane ) const; 00239 00251 virtual bool isVisible(const AxisAlignedBox& bound, FrustumPlane* culledBy = 0) const; 00252 00264 virtual bool isVisible(const Sphere& bound, FrustumPlane* culledBy = 0) const; 00265 00277 virtual bool isVisible(const Vector3& vert, FrustumPlane* culledBy = 0) const; 00278 00279 00281 const AxisAlignedBox& getBoundingBox(void) const; 00282 00284 Real getBoundingRadius(void) const; 00285 00287 void _updateRenderQueue(RenderQueue* queue); 00288 00290 const String& getMovableType(void) const; 00291 00293 const String& getName(void) const; 00294 00296 void _notifyCurrentCamera(Camera* cam); 00297 00299 Material* getMaterial(void) const; 00300 00302 void getRenderOperation(RenderOperation& op); 00303 00305 void getWorldTransforms(Matrix4* xform) const; 00306 00308 const Quaternion& getWorldOrientation(void) const; 00309 00311 const Vector3& getWorldPosition(void) const; 00312 00314 Real getSquaredViewDepth(const Camera* cam) const; 00315 00317 const LightList& getLights(void) const; 00318 00325 virtual const Vector3* getWorldSpaceCorners(void) const; 00326 00329 virtual void setProjectionType(ProjectionType pt); 00330 00333 virtual ProjectionType getProjectionType(void) const; 00334 00340 virtual void enableReflection(const Plane& p); 00341 00343 virtual void disableReflection(void); 00344 00346 virtual bool isReflected(void) const { return mReflect; } 00348 virtual const Matrix4& getReflectionMatrix(void) const { return mReflectMatrix; } 00350 virtual const Plane& getReflectionPlane(void) const { return mReflectPlane; } 00351 00361 virtual bool projectSphere(const Sphere& sphere, 00362 Real* left, Real* top, Real* right, Real* bottom) const; 00363 00364 00366 static const Real INFINITE_FAR_PLANE_ADJUST; 00367 }; 00368 00369 00370 } 00371 00372 #endif
Copyright © 2002-2003 by The OGRE Team
Last modified Fri May 14 23:22:10 2004