81 lines
3.1 KiB
C++
81 lines
3.1 KiB
C++
// This file is part of libigl, a simple c++ geometry processing library.
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//
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// Copyright (C) 2013 Alec Jacobson <alecjacobson@gmail.com>
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//
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// This Source Code Form is subject to the terms of the Mozilla Public License
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// v. 2.0. If a copy of the MPL was not distributed with this file, You can
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// obtain one at http://mozilla.org/MPL/2.0/.
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#include "sort_triangles.h"
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#include "project.h"
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#include "../sort_triangles.h"
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#include "gl.h"
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#include "../sort.h"
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#include "../slice.h"
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#include "../barycenter.h"
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#include <iostream>
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template <
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typename DerivedV,
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typename DerivedF,
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typename DerivedFF,
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typename DerivedI>
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void igl::opengl2::sort_triangles(
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const Eigen::PlainObjectBase<DerivedV> & V,
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const Eigen::PlainObjectBase<DerivedF> & F,
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Eigen::PlainObjectBase<DerivedFF> & FF,
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Eigen::PlainObjectBase<DerivedI> & I)
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{
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using namespace Eigen;
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using namespace std;
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// Put model, projection, and viewport matrices into double arrays
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Matrix4d MV;
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Matrix4d P;
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glGetDoublev(GL_MODELVIEW_MATRIX, MV.data());
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glGetDoublev(GL_PROJECTION_MATRIX, P.data());
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if(V.cols() == 3)
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{
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Matrix<typename DerivedV::Scalar, DerivedV::RowsAtCompileTime,4> hV;
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hV.resize(V.rows(),4);
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hV.block(0,0,V.rows(),V.cols()) = V;
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hV.col(3).setConstant(1);
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return igl::sort_triangles(hV,F,MV,P,FF,I);
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}else
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{
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return igl::sort_triangles(V,F,MV,P,FF,I);
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}
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}
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template <
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typename DerivedV,
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typename DerivedF,
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typename DerivedFF,
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typename DerivedI>
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void igl::opengl2::sort_triangles_slow(
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const Eigen::PlainObjectBase<DerivedV> & V,
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const Eigen::PlainObjectBase<DerivedF> & F,
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Eigen::PlainObjectBase<DerivedFF> & FF,
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Eigen::PlainObjectBase<DerivedI> & I)
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{
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using namespace Eigen;
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using namespace std;
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// Barycenter, centroid
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Eigen::Matrix<typename DerivedV::Scalar, DerivedF::RowsAtCompileTime,1> D,sD;
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Eigen::Matrix<typename DerivedV::Scalar, DerivedF::RowsAtCompileTime,3> BC;
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D.resize(F.rows(),3);
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barycenter(V,F,BC);
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for(int f = 0;f<F.rows();f++)
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{
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Eigen::Matrix<typename DerivedV::Scalar, 3,1> bc,pbc;
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bc = BC.row(f);
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project(bc,pbc);
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D(f) = pbc(2);
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}
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sort(D,1,false,sD,I);
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slice(F,I,1,FF);
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}
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#ifdef IGL_STATIC_LIBRARY
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// Explicit template instantiation
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template void igl::opengl2::sort_triangles<Eigen::Matrix<double, -1, -1, 0, -1, -1>, Eigen::Matrix<int, -1, -1, 0, -1, -1>, Eigen::Matrix<int, -1, -1, 0, -1, -1>, Eigen::Matrix<int, -1, 1, 0, -1, 1> >(Eigen::PlainObjectBase<Eigen::Matrix<double, -1, -1, 0, -1, -1> > const&, Eigen::PlainObjectBase<Eigen::Matrix<int, -1, -1, 0, -1, -1> > const&, Eigen::PlainObjectBase<Eigen::Matrix<int, -1, -1, 0, -1, -1> >&, Eigen::PlainObjectBase<Eigen::Matrix<int, -1, 1, 0, -1, 1> >&);
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template void igl::opengl2::sort_triangles_slow<Eigen::Matrix<double, -1, -1, 0, -1, -1>, Eigen::Matrix<int, -1, -1, 0, -1, -1>, Eigen::Matrix<int, -1, -1, 0, -1, -1>, Eigen::Matrix<int, -1, 1, 0, -1, 1> >(Eigen::PlainObjectBase<Eigen::Matrix<double, -1, -1, 0, -1, -1> > const&, Eigen::PlainObjectBase<Eigen::Matrix<int, -1, -1, 0, -1, -1> > const&, Eigen::PlainObjectBase<Eigen::Matrix<int, -1, -1, 0, -1, -1> >&, Eigen::PlainObjectBase<Eigen::Matrix<int, -1, 1, 0, -1, 1> >&);
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#endif
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