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/*LICENSE_START*/
/*
* Copyright 1995-2002 Washington University School of Medicine
*
* http://brainmap.wustl.edu
*
* This file is part of CARET.
*
* CARET is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* CARET is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with CARET; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
/*LICENSE_END*/
#include <cmath>
#include "BrainModelVolumeToVtkSurfaceMapper.h"
#include "PaletteFile.h"
#include "VolumeFile.h"
#include "VtkModelFile.h"
/**
* constructor.
*/
BrainModelVolumeToVtkSurfaceMapper::BrainModelVolumeToVtkSurfaceMapper(
BrainSet* bs,
VtkModelFile* vtkModelFileIn,
const VolumeFile* volumeFileIn,
const PaletteFile* paletteFileIn,
const int paletteNumberIn)
: BrainModelAlgorithm(bs),
vtkModelFile(vtkModelFileIn),
volumeFile(volumeFileIn),
paletteFile(paletteFileIn),
paletteNumber(paletteNumberIn)
{
}
/**
* destructor.
*/
BrainModelVolumeToVtkSurfaceMapper::~BrainModelVolumeToVtkSurfaceMapper()
{
}
/**
* execute the algorithm.
*/
void
BrainModelVolumeToVtkSurfaceMapper::execute() throw (BrainModelAlgorithmException)
{
//
// Check inputs
//
if (vtkModelFile == NULL) {
throw BrainModelAlgorithmException("VTK model file is invalid.");
}
if (volumeFile == NULL) {
throw BrainModelAlgorithmException("Volume file is invalid.");
}
if (paletteFile == NULL) {
throw BrainModelAlgorithmException("Palette file is invalid.");
}
if ((paletteNumber < 0) ||
(paletteNumber >= paletteFile->getNumberOfPalettes())) {
throw BrainModelAlgorithmException("Palette number is invalid.");
}
//
// Get the palette
//
const Palette* palette = paletteFile->getPalette(paletteNumber);
//
// Get volume minimum and maximum values
//
float minValue, maxValue;
VolumeFile mappingVolume(*volumeFile);
mappingVolume.getMinMaxVoxelValues(minValue, maxValue);
//
// Loop through the coordinates of the model
//
const CoordinateFile* cf = vtkModelFile->getCoordinateFile();
const int numCoords = cf->getNumberOfCoordinates();
for (int i = 0; i < numCoords; i++) {
const float* xyz = cf->getCoordinate(i);
int ijk[3];
if (mappingVolume.convertCoordinatesToVoxelIJK(xyz, ijk)) {
//
// Normalize the data value
//
const float voxelValue = volumeFile->getVoxel(ijk, 0);
float normalized = 0.0;
if (voxelValue > 0.0) {
normalized = voxelValue / maxValue;
}
else if (voxelValue < 0.0) {
normalized = -std::fabs(voxelValue / minValue);
}
//
// Get the coloring
//
const bool interpolateColor = false;
bool isNoneColor = false;
unsigned char colors[4];
palette->getColor(normalized, interpolateColor,
isNoneColor, colors);
colors[3] = 255;
//
// Set the point's color
//
vtkModelFile->setPointColor(i, colors);
}
}
}
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