/usr/include/sofa/helper/MarchingCubeUtility.h is in libsofa1-dev 1.0~beta4-12.
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* SOFA, Simulation Open-Framework Architecture, version 1.0 beta 4 *
* (c) 2006-2009 MGH, INRIA, USTL, UJF, CNRS *
* *
* This library is free software; you can redistribute it and/or modify it *
* under the terms of the GNU Lesser General Public License as published by *
* the Free Software Foundation; either version 2.1 of the License, or (at *
* your option) any later version. *
* *
* This library 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 Lesser General Public License *
* for more details. *
* *
* You should have received a copy of the GNU Lesser General Public License *
* along with this library; if not, write to the Free Software Foundation, *
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. *
*******************************************************************************
* SOFA :: Framework *
* *
* Authors: M. Adam, J. Allard, B. Andre, P-J. Bensoussan, S. Cotin, C. Duriez,*
* H. Delingette, F. Falipou, F. Faure, S. Fonteneau, L. Heigeas, C. Mendoza, *
* M. Nesme, P. Neumann, J-P. de la Plata Alcade, F. Poyer and F. Roy *
* *
* Contact information: contact@sofa-framework.org *
******************************************************************************/
#ifndef MARCHINGCUBEUTILITY_H
#define MARCHINGCUBEUTILITY_H
#include <sofa/helper/helper.h>
#include <sofa/defaulttype/Vec.h>
#include <sofa/helper/vector.h>
#include <sofa/helper/set.h>
#include <sofa/helper/io/Mesh.h>
#include <map>
namespace sofa
{
namespace helper
{
using sofa::defaulttype::Vec;
using sofa::defaulttype::Vector3;
using sofa::helper::vector;
using sofa::helper::set;
class SOFA_HELPER_API MarchingCubeUtility
{
public:
typedef unsigned int PointID;
typedef Vec<3, int> Vec3i;
typedef Vec<6, int> Vec6i;
public:
MarchingCubeUtility();
~MarchingCubeUtility() {};
void setDataResolution ( const Vec3i &resolution )
{
dataResolution = resolution;
setROI( Vec3i ( 0, 0, 0 ), resolution );
setBoundingBox ( Vec3i ( 0, 0, 0 ), resolution );
}
void setDataVoxelSize ( const Vector3 &voxelSize )
{
dataVoxelSize = voxelSize;
}
void setStep ( const unsigned int step )
{
cubeStep = step;
}
void setConvolutionSize ( const unsigned int convolutionSize )
{
this->convolutionSize = convolutionSize;
}
/// Set the bounding box from real coords to apply mCube localy.
void setBoundingBoxFromRealCoords ( const Vector3& min, const Vector3& max )
{
Vector3 gridSize = dataVoxelSize * cubeStep;
gridSize = Vector3 ( 1.0 / gridSize[0], 1.0 / gridSize[1], 1.0 / gridSize[2] );
Vec3i bbMin = ( min - ( dataVoxelSize/2.0 ) ).linearProduct ( gridSize );
Vec3i bbMax = ( max - ( dataVoxelSize/2.0 ) ).linearProduct ( gridSize );
setBoundingBox( min, max);
}
/// Set the bounding box (in the data space) to apply mCube localy.
void setROI ( const Vec3i& min, const Vec3i& max )
{
this->roi.min = min;
this->roi.max = max;
if ( roi.min[0] < 0 ) roi.min[0] = 0;
if ( roi.min[1] < 0 ) roi.min[1] = 0;
if ( roi.min[2] < 0 ) roi.min[2] = 0;
if ( roi.max[0] > dataResolution[0] )roi.max[0] = dataResolution[0];
if ( roi.max[1] > dataResolution[1] )roi.max[1] = dataResolution[1];
if ( roi.max[2] > dataResolution[2] )roi.max[2] = dataResolution[2];
}
/// Set the bounding box (in the data space) to apply mCube localy.
void setBoundingBox ( const Vec6i& roi )
{
Vec3i min( roi[0], roi[1], roi[2]);
Vec3i max( roi[3], roi[4], roi[5]);
setBoundingBox( min, max);
}
/// Set the bounding box (in the data space) to apply mCube localy.
void setBoundingBox ( const Vec3i& min, const Vec3i& max )
{
this->bbox.min = min;
this->bbox.max = max;
if ( bbox.min[0] < 0 ) bbox.min[0] = 0;
if ( bbox.min[1] < 0 ) bbox.min[1] = 0;
if ( bbox.min[2] < 0 ) bbox.min[2] = 0;
if ( bbox.max[0] > dataResolution[0] )bbox.max[0] = dataResolution[0];
if ( bbox.max[1] > dataResolution[1] )bbox.max[1] = dataResolution[1];
if ( bbox.max[2] > dataResolution[2] )bbox.max[2] = dataResolution[2];
}
void setMaxIsoValue( float value) { maxIsoValue = value;};
/// Set the border to localy remesh from real coords
void setBordersFromRealCoords ( const sofa::helper::set<Vector3>& borders );
/// given a set of data (size of the data and size of the marching cube beeing defined previously),
/// we construct the surface.
/// mesh is a vector containing the triangles defined as a sequence of three indices
/// map_indices gives the correspondance between an indice and a 3d position in space
void run ( unsigned char *data, const float isolevel,
sofa::helper::vector< PointID > &triangles,
sofa::helper::vector< Vector3> &vertices,
helper::vector< helper::vector<unsigned int> > *triangleIndexInRegularGrid = NULL ) const;
/// Same as the previous function but the surfaces are constructed by propagating from seeds.
/// Faster than previous but it need the precomputation of the seeds.
void run ( unsigned char *data, const vector<Vec3i>& seeds,
const float isolevel,
sofa::helper::vector< PointID > &triangles,
sofa::helper::vector< Vector3> &vertices,
helper::vector< helper::vector<unsigned int> > *triangleIndexInRegularGrid = NULL ) const;
/// given a set of data (size of the data and size of the marching cube beeing defined previously),
/// we construct a Sofa mesh.
void run ( unsigned char *data, const float isolevel, sofa::helper::io::Mesh &m ) const;
/// given a set of data, find seeds to run quickly.
void findSeeds ( vector<Vec3i>& seeds, const float isoValue, unsigned char *_data );
/// Given coords in the scene, find seeds coords.
void findSeedsFromRealCoords ( vector<Vec3i>& mCubeCoords, const vector<Vector3>& realCoords ) const;
private:
struct GridCell
{
float val[8];
Vector3 pos[8];
};
struct BoundingBox
{
Vec3i min;
Vec3i max;
};
inline void initCell ( GridCell& cell, const Vec3i& coord, const unsigned char* data, const Vector3& gridStep, const Vec3i& dataGridStep ) const;
inline void vertexInterp ( Vector3 &p, const float isolevel, const Vector3 &p1, const Vector3 &p2, const float valp1, const float valp2 ) const ;
inline bool testGrid ( const float v, const float isolevel ) const;
inline void updateTriangleInRegularGridVector ( helper::vector< helper::vector<unsigned int /*regular grid space index*/> >& triangleIndexInRegularGrid, const Vec3i& coord, const GridCell& cell, unsigned int nbTriangles ) const;
int polygonise ( const GridCell &grid, int& cubeConf, const float isolevel,
sofa::helper::vector< PointID > &triangles,
std::map< Vector3, PointID> &map_vertices,
sofa::helper::vector< Vector3 > &map_indices ) const ;
bool getVoxel ( unsigned int index, const unsigned char *dataVoxels ) const
{
const int i = index%8;
return ( ( dataVoxels[index>>3]& ( ( int ) ( pow ( 2.0f, i ) ) ) ) >> i ) == 1;
}
void findConnectedVoxels ( set<unsigned int>& connectedVoxels, const float isoValue, const Vec3i& from, unsigned char* data );
void createGaussianConvolutionKernel ( vector< float > &convolutionKernel ) const;
void applyConvolution ( const float* convolutionKernel,
unsigned int x, unsigned int y, unsigned int z,
const unsigned char *input_data,
unsigned char *output_data ) const;
void smoothData ( unsigned char *data ) const;
/// Propagate the triangulation surface creation from a cell.
void propagateFrom ( const Vec3i coord,
unsigned char* data, const float isolevel,
sofa::helper::vector< PointID >& triangles,
sofa::helper::vector< Vector3 >& vertices,
sofa::helper::set<Vec3i>& generatedCubes,
helper::vector< helper::vector<unsigned int> >* triangleIndexInRegularGrid = NULL ) const;
private:
unsigned int cubeStep;
unsigned int convolutionSize;
Vec3i dataResolution;
Vector3 dataVoxelSize;
float maxIsoValue; // if you want to limit between two iso-value.
BoundingBox bbox; //bbox used to remesh
BoundingBox roi; // Set value to 0 on this limit to always obtain manifold mesh. (Set to dataResolution by default but can be changed for ROI)
set<Vec3i> borders;
};
extern SOFA_HELPER_API const int MarchingCubeEdgeTable[256];
extern SOFA_HELPER_API const int MarchingCubeFaceTable[256];
extern SOFA_HELPER_API const int MarchingCubeTriTable[256][16];
} // namespace helper
} // namespace sofa
#endif
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