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// Geometric Tools, LLC
// Copyright (c) 1998-2014
// Distributed under the Boost Software License, Version 1.0.
// http://www.boost.org/LICENSE_1_0.txt
// http://www.geometrictools.com/License/Boost/LICENSE_1_0.txt
//
// File Version: 5.0.1 (2010/10/01)
#ifndef WM5IMAGEPROCESSING3_H
#define WM5IMAGEPROCESSING3_H
#include "Wm5GraphicsLIB.h"
#include "Wm5ImageProcessing.h"
// This class supports processing of a 3D image that is stored as a tiled
// 2D image. Let the image have b0 voxels in the x-direction, b1 voxels
// in the y-direction, and b2 voxels in the z-direction. The value b2 must
// be factorable into b2 = f0*f1. The 2D representation of the image is a
// f0-by-f1 array of tiles, each tile a z-slice of dimensions b0-by-b1.
//
// A 3D image is typically stored in lexicographical order in linear memory.
// If (x,y,z) is a voxel location in [0,b0)x[0,b1)x[0,b2), then the linear
// index is i = x + b0*(y + b1*z). The 2D-tiled representation has a
// different mapping. Let (u,v) be a pixel location in the 2D representation,
// in which case 0 <= u < b0*f0 and 0 <= v < b1*f1. The corresponding
// (x,y,z) voxel location is
// x = u mod b0
// y = v mod b1
// z = (u div b0) + (v div b1)*f0
// Now let (x,y,z) be a voxel location. The corresponding (u,v) pixel
// location is
// u = x + (z mod f0)*b0
// v = y + (z div f0)*b1
namespace Wm5
{
class WM5_GRAPHICS_ITEM ImageProcessing3 : public ImageProcessing
{
public:
// Construction and destruction. The constructors are for a rectangular
// cube with bound2 = factor0*factor1. Objects of this class should not
// be instantiated until the shader profile is known. Thus, do not create
// such an object in an application constructor, but do so in OnInitialize
// or later.
// Use this constructor for the standard image processing pipeline.
ImageProcessing3 (int bound0, int bound1, int factor0, int factor1,
Float4* imageData, PixelShader* mainPShader,
const Float4& boundaryColor, bool useDirichlet);
// Use this constructor when you want to set up your own pipeline for
// processing the image.
ImageProcessing3 (int bound0, int bound1, int factor0, int factor1,
int numTargets);
virtual ~ImageProcessing3 ();
// Member access.
inline int GetBound0 () const;
inline int GetBound1 () const;
inline int GetBound2 () const;
inline int GetFactor0 () const;
inline int GetFactor1 () const;
inline float GetDx () const;
inline float GetDy () const;
inline float GetDz () const;
// The mapping from 2D pixel to 3D voxel.
void Map2Dto3D (int u, int v, int& x, int& y, int& z) const;
// The mapping from 3D voxel to 2D pixel.
void Map3Dto2D (int x, int y, int z, int& u, int& v) const;
// The mapping from 3D voxel to 1D memory.
int Map3Dto1D (int x, int y, int z);
// Create a tiled image corresponding to the 3D image data.
Texture2D* CreateTiledImage (Float4* imageData);
// Set boundary pixels to (0,0,0,0).
void CreateBoundaryDirichletEffect (VisualEffect*& effect,
VisualEffectInstance*& instance);
// Set boundary pixels so that boundary derivatives are zero.
void CreateBoundaryNeumannEffect (VisualEffect*& effect,
VisualEffectInstance*& instance);
// Draw the tiled image using the boundary color for boundary voxels.
void CreateDrawEffect (VisualEffect*& effect,
VisualEffectInstance*& instance, const Float4& boundaryColor);
private:
int mBound0, mBound1, mBound2, mBound0M1, mBound1M1, mBound2M1;
int mFactor0, mFactor1;
float mDx, mDy, mDz;
// Profile information for BoundaryDirichlet.fx.
static int msAllDirichletPTextureUnits[2];
static int* msDirichletPTextureUnits[Shader::MAX_PROFILES];
static std::string msDirichletPPrograms[Shader::MAX_PROFILES];
// Profile information for BoundaryNeumann.fx.
static int msAllNeumannPTextureUnits[2];
static int* msNeumannPTextureUnits[Shader::MAX_PROFILES];
static std::string msNeumannPPrograms[Shader::MAX_PROFILES];
// Profile information for ScreenShader.fx, function v_ScreenShader and
// p_ScreenShader3.
static int msAllDrawPRegisters[1];
static int* msDrawPRegisters[Shader::MAX_PROFILES];
static int msAllDrawPTextureUnits[2];
static int* msDrawPTextureUnits[Shader::MAX_PROFILES];
static std::string msDrawPPrograms[Shader::MAX_PROFILES];
};
#include "Wm5ImageProcessing3.inl"
}
#endif
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