OgreVolumeIsoSurfaceMC.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/
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*/
#ifndef __Ogre_Volume_IsoSurfaceMC_H__
#define __Ogre_Volume_IsoSurfaceMC_H__
#include "OgreVolumeIsoSurface.h"
namespace Ogre {
namespace Volume {
class _OgreVolumeExport IsoSurfaceMC : public IsoSurface
{
protected:
inline Vector3 interpolate(const Vector3 &v0, const Vector3 &v1, const Vector4 &val0, const Vector4 &val1, Vector3 &normal) const
{
// Don't use Math::RealEqual here as it isn't inlined and this function is performance critical.
if (fabs(val0.w - ISO_LEVEL) <= FLT_EPSILON)
{
normal.x = val0.x;
normal.y = val0.y;
normal.z = val0.z;
return v0;
}
if (fabs(val1.w - ISO_LEVEL) <= FLT_EPSILON)
{
normal.x = val1.x;
normal.y = val1.y;
normal.z = val1.z;
return v1;
}
if (fabs(val1.w - val0.w) <= FLT_EPSILON)
{
normal.x = val0.x;
normal.y = val0.y;
normal.z = val0.z;
return v0;
}
Real mu = (ISO_LEVEL - val0.w) / (val1.w - val0.w);
Vector4 normal4 = val0 + mu * (val1 - val0);
normal.x = normal4.x;
normal.y = normal4.y;
normal.z = normal4.z;
normal.normalise();
return v0 + mu * (v1 - v0);
}
public:
explicit IsoSurfaceMC(const Source *src);
virtual void addMarchingCubesTriangles(const Vector3 *corners, const Vector4 *volumeValues, MeshBuilder *mb) const;
virtual void addMarchingSquaresTriangles(const Vector3 *corners, const Vector4 *volumeValues, const size_t *indices, const Real maxDistance, MeshBuilder *mb) const;
};
}
}
#endif
Ogre::Vector3::z
Real z
Definition: OgreVector3.h:54
Ogre::Vector4::w
Real w
Definition: OgreVector4.h:48
Ogre::Vector4::z
Real z
Definition: OgreVector4.h:48
Ogre::Vector4
4-dimensional homogeneous vector.
Definition: OgreVector4.h:45
Ogre::Real
float Real
Software floating point type.
Definition: OgrePrerequisites.h:70
Ogre::Volume::IsoSurfaceMC::interpolate
Vector3 interpolate(const Vector3 &v0, const Vector3 &v1, const Vector4 &val0, const Vector4 &val1, Vector3 &normal) const
Linear interpolation between two vectors based on some values associated to them. ...
Definition: OgreVolumeIsoSurfaceMC.h:58
Ogre::Volume::IsoSurface
Abstract IsoSurface.
Definition: OgreVolumeIsoSurface.h:40
OgreVolumeIsoSurface.h
Ogre::Vector3
Standard 3-dimensional vector.
Definition: OgreVector3.h:51
Ogre::Vector3::y
Real y
Definition: OgreVector3.h:54
Ogre::Volume::IsoSurfaceMC
Marching Cubes implementation like at http://local.wasp.uwa.edu.au/~pbourke/geometry/polygonise/.
Definition: OgreVolumeIsoSurfaceMC.h:39
Ogre::Vector3::x
Real x
Definition: OgreVector3.h:54
Ogre
Definition: OgreAndroidLogListener.h:34
Ogre::Vector3::normalise
Real normalise()
Normalises the vector.
Definition: OgreVector3.h:446
Ogre::Vector4::x
Real x
Definition: OgreVector4.h:48
Ogre::Vector4::y
Real y
Definition: OgreVector4.h:48
Ogre::Volume::Source
Abstract class defining the density function.
Definition: OgreVolumeSource.h:41
_OgreVolumeExport
#define _OgreVolumeExport
Definition: OgreVolumePrerequisites.h:43
Ogre::Volume::MeshBuilder
Class to build up a mesh with vertices and indices.
Definition: OgreVolumeMeshBuilder.h:132

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