42 lines
1.9 KiB
C++
42 lines
1.9 KiB
C++
// This file is part of libigl, a simple c++ geometry processing library.
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//
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// Copyright (C) 2015 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 "unproject_ray.h"
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#include "unproject.h"
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template <
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typename Derivedpos,
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typename Derivedmodel,
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typename Derivedproj,
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typename Derivedviewport,
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typename Deriveds,
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typename Deriveddir>
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IGL_INLINE void igl::unproject_ray(
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const Eigen::PlainObjectBase<Derivedpos> & pos,
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const Eigen::PlainObjectBase<Derivedmodel> & model,
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const Eigen::PlainObjectBase<Derivedproj> & proj,
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const Eigen::PlainObjectBase<Derivedviewport> & viewport,
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Eigen::PlainObjectBase<Deriveds> & s,
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Eigen::PlainObjectBase<Deriveddir> & dir)
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{
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using namespace std;
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using namespace Eigen;
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// Source and direction on screen
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typedef Eigen::Matrix<typename Deriveds::Scalar,3,1> Vec3;
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Vec3 win_s(pos(0),pos(1),0);
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Vec3 win_d(pos(0),pos(1),1);
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// Source, destination and direction in world
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Vec3 d;
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igl::unproject(win_s,model,proj,viewport,s);
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igl::unproject(win_d,model,proj,viewport,d);
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dir = d-s;
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}
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#ifdef IGL_STATIC_LIBRARY
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template void igl::unproject_ray<Eigen::Matrix<float, 2, 1, 0, 2, 1>, Eigen::Matrix<float, 4, 4, 0, 4, 4>, Eigen::Matrix<float, 4, 4, 0, 4, 4>, Eigen::Matrix<float, 4, 1, 0, 4, 1>, Eigen::Matrix<float, 3, 1, 0, 3, 1>, Eigen::Matrix<float, 3, 1, 0, 3, 1> >(Eigen::PlainObjectBase<Eigen::Matrix<float, 2, 1, 0, 2, 1> > const&, Eigen::PlainObjectBase<Eigen::Matrix<float, 4, 4, 0, 4, 4> > const&, Eigen::PlainObjectBase<Eigen::Matrix<float, 4, 4, 0, 4, 4> > const&, Eigen::PlainObjectBase<Eigen::Matrix<float, 4, 1, 0, 4, 1> > const&, Eigen::PlainObjectBase<Eigen::Matrix<float, 3, 1, 0, 3, 1> >&, Eigen::PlainObjectBase<Eigen::Matrix<float, 3, 1, 0, 3, 1> >&);
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#endif
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