OgreVolumeCacheSource.h
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/*
-----------------------------------------------------------------------------
This source file is part of OGRE
(Object-oriented Graphics Rendering Engine)
For the latest info, see http://www.ogre3d.org/
Copyright (c) 2000-2013 Torus Knot Software Ltd
Permission is hereby granted, free of charge, to any person obtaining a copy
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*/
#ifndef __Ogre_Volume_CacheSource_H__
#define __Ogre_Volume_CacheSource_H__
#include "OgreVector3.h"
#include "OgreVector4.h"
#include "OgreVolumeSource.h"
#include "OgreVolumePrerequisites.h"
namespace Ogre {
namespace Volume {
bool _OgreVolumeExport operator<(const Vector3& a, const Vector3& b);
class _OgreVolumeExport CacheSource : public Source
{
protected:
typedef map<Vector3, Vector4>::type UMapPositionValue;
mutable UMapPositionValue mCache;
const Source *mSrc;
inline Vector4 getFromCache(const Vector3 &position) const
{
Vector4 result;
map<Vector3, Vector4>::iterator it = mCache.find(position);
if (it == mCache.end())
{
result = mSrc->getValueAndGradient(position);
mCache[position] = result;
}
else
{
result = it->second;
}
return result;
}
public:
CacheSource(const Source *src);
virtual Vector4 getValueAndGradient(const Vector3 &position) const;
virtual Real getValue(const Vector3 &position) const;
};
}
}
#endif
OgreVector4.h
Ogre::Volume::CacheSource::getFromCache
Vector4 getFromCache(const Vector3 &position) const
Gets a density value and gradient from the cache.
Definition: OgreVolumeCacheSource.h:69
OgreVector3.h
Ogre::Volume::CacheSource::mSrc
const Source * mSrc
The source to cache.
Definition: OgreVolumeCacheSource.h:61
Ogre::Vector4
4-dimensional homogeneous vector.
Definition: OgreVector4.h:45
Ogre::Real
float Real
Software floating point type.
Definition: OgrePrerequisites.h:70
Ogre::Volume::Source::getValueAndGradient
virtual Vector4 getValueAndGradient(const Vector3 &position) const =0
Gets the density value and gradient at a specific position.
Ogre::Vector3
Standard 3-dimensional vector.
Definition: OgreVector3.h:51
OgreVolumePrerequisites.h
OgreVolumeSource.h
Ogre
Definition: OgreAndroidLogListener.h:34
Ogre::Volume::CacheSource::mCache
UMapPositionValue mCache
Definition: OgreVolumeCacheSource.h:58
Ogre::map
Definition: OgrePrerequisites.h:533
Ogre::Volume::CacheSource
A caching Source.
Definition: OgreVolumeCacheSource.h:52
Ogre::Volume::Source
Abstract class defining the density function.
Definition: OgreVolumeSource.h:41
_OgreVolumeExport
#define _OgreVolumeExport
Definition: OgreVolumePrerequisites.h:43
Ogre::Volume::CacheSource::UMapPositionValue
map< Vector3, Vector4 >::type UMapPositionValue
Map for the cache.
Definition: OgreVolumeCacheSource.h:57
Ogre::Volume::operator<
bool _OgreVolumeExport operator<(const Vector3 &a, const Vector3 &b)
A less operator.

Copyright © 2012 Torus Knot Software Ltd
This work is licensed under a Creative Commons Attribution-ShareAlike 3.0 Unported License.