86 lines
3.3 KiB
C++
86 lines
3.3 KiB
C++
/***************************************************************************
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* Copyright (c) 2017 Lorenz Lechner *
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* *
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* This file is part of the FreeCAD CAx development system. *
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* *
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* This library is free software; you can redistribute it and/or *
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* modify it under the terms of the GNU Library General Public *
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* License as published by the Free Software Foundation; either *
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* version 2 of the License, or (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, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU Library General Public License for more details. *
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* *
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* You should have received a copy of the GNU Library General Public *
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* License along with this library; see the file COPYING.LIB. If not, *
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* write to the Free Software Foundation, Inc., 59 Temple Place, *
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* Suite 330, Boston, MA 02111-1307, USA *
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* *
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***************************************************************************/
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#ifndef MESHFLATTENING
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#define MESHFLATTENING
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// idea:
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// - unwrap any meshed shells and output a 2d face (meshing is done externally)
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// - unwrap faces which are nurbs and return nurbs (no cuts, meshing internally)
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// - TODO: map any curves from origin to flattened faces
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#include "MeshFlatteningNurbs.h"
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#include <BRepTools.hxx>
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#include <TopoDS_Face.hxx>
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#include <vector>
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#include <Eigen/Geometry>
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#include <Eigen/IterativeLinearSolvers>
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#include <Eigen/SparseCore>
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#include <Eigen/QR>
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#include <vector>
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typedef Eigen::Vector3d Vector3;
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typedef Eigen::Vector2d Vector2;
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template <typename type, unsigned int size>
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using ColMat = Eigen::Matrix<type, Eigen::Dynamic, size>;
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template <typename type, unsigned int size>
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using RowMat = Eigen::Matrix<type, size, Eigen::Dynamic>;
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typedef Eigen::Triplet<double> trip;
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typedef Eigen::SparseMatrix<double> spMat;
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std::vector<ColMat<double, 3>> getBoundaries(ColMat<double, 3> vertices, ColMat<long, 3> tris);
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class FaceUnwrapper{
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nurbs::NurbsBase2D nu;
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public:
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FaceUnwrapper(){}
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FaceUnwrapper(const TopoDS_Face & face);
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FaceUnwrapper(ColMat<double, 3> xyz_nodes, ColMat<long, 3> tris);
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void findFlatNodes(int steps, double val);
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ColMat<double, 3> interpolateFlatFace(const TopoDS_Face& face);
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std::vector<ColMat<double, 3>> getFlatBoundaryNodes();
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bool use_nurbs = true;
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// the mesh
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ColMat<long, 3> tris; // input
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ColMat<long, 1> fixed_nodes; // input
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ColMat<double, 3> xyz_nodes; // compute from uv_mesh (xyz = A * poles)
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ColMat<double, 2> uv_nodes; // input
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ColMat<double, 2> ze_nodes; // copute
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// nurbs
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ColMat<double, 2> ze_poles; // compute
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spMat A; // mapping between nurbs(poles) and mesh(vertices) computed with nurbs-basis-functions and uv_mesh
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};
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#endif // MESHFLATTENING
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