forked from bartvdbraak/blender
90 lines
2.0 KiB
C++
90 lines
2.0 KiB
C++
/******************************************************************************
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*
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// El'Beem - the visual lattice boltzmann freesurface simulator
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// All code distributed as part of El'Beem is covered by the version 2 of the
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// GNU General Public License. See the file COPYING for details.
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//
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// Copyright 2008 Nils Thuerey , Richard Keiser, Mark Pauly, Ulrich Ruede
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//
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*
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* Mean Value Mesh Coords class
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*
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*****************************************************************************/
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#ifndef MVMCOORDS_H
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#define MVMCOORDS_H
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#include "utilities.h"
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#include "ntl_ray.h"
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#include <vector>
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#define mvmFloat double
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#ifdef WIN32
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#ifndef FREE_WINDOWS
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#include "float.h"
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#define isnan(n) _isnan(n)
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#define finite _finite
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#endif
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#endif
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#ifdef sun
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#include "ieeefp.h"
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#endif
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// weight and triangle index
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class mvmIndexWeight {
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public:
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mvmIndexWeight() : weight(0.0) {}
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mvmIndexWeight(int const& i, mvmFloat const& w) :
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weight(w), index(i) {}
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// for sorting
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bool operator> (mvmIndexWeight const& w) const { return this->weight > w.weight; }
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bool operator< (mvmIndexWeight const& w) const { return this->weight < w.weight; }
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mvmFloat weight;
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int index;
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};
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// transfer point with weights
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class mvmTransferPoint {
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public:
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//! position of transfer point
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ntlVec3Gfx lastpos;
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//! triangle weights
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std::vector<mvmIndexWeight> weights;
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};
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//! compute mvmcs
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class MeanValueMeshCoords {
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public:
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MeanValueMeshCoords() {}
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~MeanValueMeshCoords() {
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clear();
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}
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void clear();
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void calculateMVMCs(std::vector<ntlVec3Gfx> &reference_vertices,
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std::vector<ntlTriangle> &tris, std::vector<ntlVec3Gfx> &points, gfxReal numweights);
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void transfer(std::vector<ntlVec3Gfx> &vertices, std::vector<ntlVec3Gfx>& displacements);
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protected:
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void computeWeights(std::vector<ntlVec3Gfx> &reference_vertices,
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std::vector<ntlTriangle> &tris, mvmTransferPoint& tds, gfxReal numweights);
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std::vector<mvmTransferPoint> mVertices;
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int mNumVerts;
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};
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#endif
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