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Object-Oriented Graphics Rendering Engine
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OgreShadowCameraSetupLiSPSM.h
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1 /*
2 -----------------------------------------------------------------------------
3 This source file is part of OGRE
4 (Object-oriented Graphics Rendering Engine)
5 For the latest info, see http://www.ogre3d.org/
6 
7 Copyright (c) 2000-2014 Torus Knot Software Ltd
8 Copyright (c) 2006 Matthias Fink, netAllied GmbH <matthias.fink@web.de>
9 
10 Permission is hereby granted, free of charge, to any person obtaining a copy
11 of this software and associated documentation files (the "Software"), to deal
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28 */
29 #ifndef __ShadowCameraSetupLiSPSM_H__
30 #define __ShadowCameraSetupLiSPSM_H__
31 
32 #include "OgrePrerequisites.h"
34 #include "OgreHeaderPrefix.h"
35 
36 namespace Ogre
37 {
38 
99  {
100  protected:
109 
125  Matrix4 calculateLiSPSM(const Matrix4& lightSpace, const PointListBody& bodyB,
126  const PointListBody& bodyLVS, const SceneManager& sm,
127  const Camera& cam, const Light& light) const;
128 
153  Real calculateNOpt(const Matrix4& lightSpace, const AxisAlignedBox& bodyBABB_ls,
154  const PointListBody& bodyLVS, const Camera& cam) const;
155 
158  Real calculateNOptSimple(const PointListBody& bodyLVS,
159  const Camera& cam) const;
160 
171  Vector3 calculateZ0_ls(const Matrix4& lightSpace, const Vector3& e, Real bodyB_zMax_ls,
172  const Camera& cam) const;
173 
179  Matrix4 buildFrustumProjection(Real left, Real right, Real bottom,
180  Real top, Real near, Real far) const;
181 
182  public:
188 
193  virtual ~LiSPSMShadowCameraSetup(void);
194 
201  virtual void getShadowCamera(const SceneManager *sm, const Camera *cam,
202  const Viewport *vp, const Light *light, Camera *texCam, size_t iteration) const;
203 
216  virtual void setOptimalAdjustFactor(Real n) { mOptAdjustFactor = n; }
220  virtual Real getOptimalAdjustFactor() const { return mOptAdjustFactor; }
224  virtual void setUseSimpleOptimalAdjust(bool s) { mUseSimpleNOpt = s; }
228  virtual bool getUseSimpleOptimalAdjust() const { return mUseSimpleNOpt; }
229 
238  virtual void setCameraLightDirectionThreshold(Degree angle);
239 
244  virtual Degree getCameraLightDirectionThreshold() const;
245 
246 
247  };
251 }
252 
253 #include "OgreHeaderSuffix.h"
254 
255 #endif
256 
A viewpoint from which the scene will be rendered.
Definition: OgreCamera.h:86
Class encapsulating a standard 4x4 homogeneous matrix.
Definition: OgreMatrix4.h:78
float Real
Software floating point type.
#define _OgreExport
Definition: OgrePlatform.h:260
virtual Real getOptimalAdjustFactor() const
Get the parameter n used to produce optimal shadows.
Manages the organisation and rendering of a 'scene' i.e.
Real mOptAdjustFactor
Warp factor adjustment.
virtual void setUseSimpleOptimalAdjust(bool s)
Sets whether or not to use a slightly simpler version of the camera near point derivation (default is...
virtual void setOptimalAdjustFactor(Real n)
Adjusts the parameter n to produce optimal shadows.
A 3D box aligned with the x/y/z axes.
Representation of a dynamic light source in the scene.
Definition: OgreLight.h:73
Wrapper class which indicates a given angle value is in Degrees.
Definition: OgreMath.h:98
Standard 3-dimensional vector.
Definition: OgreVector3.h:51
Real mCosCamLightDirThreshold
Threshold (cos angle) within which to start increasing the opt adjust as camera direction approaches ...
Internal class holding a point list representation of a convex body.
bool mUseSimpleNOpt
Use simple nopt derivation?
An abstraction of a viewport, i.e.
Definition: OgreViewport.h:57
Real mOptAdjustFactorTweak
Extra calculated warp factor.
virtual bool getUseSimpleOptimalAdjust() const
Gets whether or not to use a slightly simpler version of the camera near point derivation (default is...
Implements the Light Space Perspective Shadow Mapping Algorithm.
Implements the uniform shadow mapping algorithm in focused mode.