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103 lines
4.1 KiB
C++
103 lines
4.1 KiB
C++
//##################################################################################################
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//
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// Custom Visualization Core library
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// Copyright (C) 2011-2013 Ceetron AS
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//
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// This library may be used under the terms of either the GNU General Public License or
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// the GNU Lesser General Public License as follows:
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//
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// GNU General Public License Usage
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// This library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful, but WITHOUT ANY
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// WARRANTY; without even the implied warranty of MERCHANTABILITY or
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// FITNESS FOR A PARTICULAR PURPOSE.
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//
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// See the GNU General Public License at <<http://www.gnu.org/licenses/gpl.html>>
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// for more details.
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//
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// GNU Lesser General Public License Usage
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// This library is free software; you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation; either version 2.1 of the License, or
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// (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful, but WITHOUT ANY
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// WARRANTY; without even the implied warranty of MERCHANTABILITY or
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// FITNESS FOR A PARTICULAR PURPOSE.
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//
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// See the GNU Lesser General Public License at <<http://www.gnu.org/licenses/lgpl-2.1.html>>
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// for more details.
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//
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//##################################################################################################
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#pragma once
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#include "cvfObject.h"
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#include "cvfVector3.h"
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namespace cvf {
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class RectilinearGrid;
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class DrawableGeo;
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class ScalarMapper;
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//==================================================================================================
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//
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//
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//
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//==================================================================================================
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class StructGridIsosurface : public Object
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{
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public:
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StructGridIsosurface(const RectilinearGrid* grid);
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~StructGridIsosurface();
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void setScalarSetIndex(uint scalarSetIndex);
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void setIsoValue(double value);
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void setMapScalar(uint scalarSetIndex, const ScalarMapper* mapper);
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ref<DrawableGeo> generateSurface() const;
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ref<DrawableGeo> generateSurfaceCellCenterBased() const;
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private:
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struct GridCell
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{
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Vec3d p[8]; // Cell's corner coordinates
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double val[8]; // Scalar value in cell corners used to find isosurface
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double mapVal[8]; // Scalar value in cell corners used to map onto isosurface
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size_t eid[12]; // Global edge IDs for each of the cell's edges
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};
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struct Triangle
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{
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Vec3d p[3]; // Triangle vertices
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size_t peid[3]; // Source edge ID for the vertices
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double scalars[3]; // Interpolated scalar values for the vertices
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};
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bool mapScalar() const;
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static int polygonise(double isoLevel, const GridCell& grid, Triangle triangles[5], bool useTextureMapping);
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static Vec3d vertexInterpolate(double isoLevel, const Vec3d& p1, const Vec3d& p2, const double valp1, const double valp2);
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static Vec3d vertexInterpolateWithMapping(double isoLevel, const Vec3d& p1, const Vec3d& p2, const double valp1, const double valp2, const double mapValp1, const double mapValp2, double* mapVal);
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private:
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cref<RectilinearGrid> m_grid;
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uint m_scalarSetIndex; // Index of the value set that is used to generate the isosurface. Default 0
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double m_isoValue; // Scalar value used to find isosurface for
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uint m_mapScalarSetIndex; // Index of scalar set that is mapped onto the cut plane. -1 for no mapping
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cref<ScalarMapper> m_scalarMapper; // Scalar mapper to use when mapping. Both scalar set index and mapper must be set in order to get scalar mapping
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static const uint sm_edgeTable[256];
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static const int sm_triTable[256][16];
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};
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}
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