vvizStructure.h

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/*=======================================================================
** Author      : VSG (MMM YYYY)
**=======================================================================*/
#ifndef VVIZ_STRUCTURE_H
#define VVIZ_STRUCTURE_H

vec3 VVizGetVolumeDimensions(in VVizDataSetId dataset);

vec3 VVizGetTileDimensions(in VVizDataSetId dataset);

vec3 VVizGetVoxelDimensions(in VVizDataSetId dataset);

#define VVizTileInfo vec4

int VVizGetTileResolution(in VVizTileInfo tileInfo);

VVizTileInfo VVizGetTileInfo(in VVizDataSetId dataset, in vec3 dataCoord);

void VVizGetTileIJKBox(in VVizDataSetId dataset, in vec3 dataCoord, out vec3 tileIJKMin, out vec3 tileIJKMax);

VVizDataSetId VVizGetDefaultDataSet();

bool VVizIsUndefined( VVIZ_DATATYPE data );
 

vec4 VVizTextureToObject(in VVizDataSetId dataset, in vec4 texCoord);

vec3 VVizTextureToObjectVec(in VVizDataSetId dataset, in vec3 texCoord);

vec3 VVizTextureToObjectDir(in VVizDataSetId dataset, in vec3 texCoord);
 

vec4 VVizObjectToTexture(in VVizDataSetId dataset, in vec4 objectCoord);

vec3 VVizObjectToTextureVec(in VVizDataSetId dataset, in vec3 objectCoord);

vec3 VVizObjectToTextureDir(in VVizDataSetId dataset, in vec3 objectCoord);
 

vec4 VVizTextureToWorld(in VVizDataSetId dataset, in vec4 texCoord);

vec3 VVizTextureToWorldVec(in VVizDataSetId dataset, in vec3 texCoord);

vec3 VVizTextureToWorldDir(in VVizDataSetId dataset, in vec3 texCoord);
 

vec4 VVizWorldToTexture(in VVizDataSetId dataset, in vec4 worldCoord);

vec3 VVizWorldToTextureVec(in VVizDataSetId dataset, in vec3 worldCoord);

vec3 VVizWorldToTextureDir(in VVizDataSetId dataset, in vec3 worldCoord);
 

vec4 VVizTextureToTexture(in VVizDataSetId datasetSrc, in VVizDataSetId datasetDst, in vec4 texCoord);

vec3 VVizTextureToTextureVec(in VVizDataSetId datasetSrc, in VVizDataSetId datasetDst, in vec3 texCoord);

vec3 VVizTextureToTextureDir(in VVizDataSetId datasetSrc, in VVizDataSetId datasetDst, in vec3 texCoord);

struct VVizVoxelInfo
{
  vec3 texCoord;
  VVIZ_DATATYPE value;
 
  float undefinedFactor;
 
  // PRIVATE members
  // Texture coordinate in Physical Space
  vec3 texCoordPhys;
  // Physical tile information
  // - tileInfo.xyz  = tile's origin coordinate
  // - tileInfo.w    = tile's ldm resolution
  VVizTileInfo tileInfo;
  //Used by VVizEdgeImageSpace and accumulated along the ray
  // - nprData.x = viewspace Z
  // - nprData.y = normal factor
  vec4 nprData;
 
  // coordinates of sample in volume space.
  // most of the time, equal to texCoord but may be different in case of projection
  // or in voxelized rendering.
  // Difference with texCoord is that texCoord represent where we will access data whereas
  // sample coord represent where is the current sample of raycast.
  vec3 sampleCoord;
};
 

struct VVizNeighborsGeneral
{
  vec3 texCoords[8];
  VVIZ_DATATYPE values[8];
  // Coeffs used for linear interpolation (ie: fractionnal part of texcoords)
  vec3 coeffs;
};
 
#endif