48 lines
1.5 KiB
C++
48 lines
1.5 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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#ifndef IGL_UNPROJECT_H
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#define IGL_UNPROJECT_H
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#include "igl_inline.h"
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#include <Eigen/Core>
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namespace igl
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{
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// Eigen reimplementation of gluUnproject
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//
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// Inputs:
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// win #P by 3 or 3-vector (#P=1) of screen space x, y, and z coordinates
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// model 4x4 model-view matrix
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// proj 4x4 projection matrix
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// viewport 4-long viewport vector
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// Outputs:
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// scene #P by 3 or 3-vector (#P=1) the unprojected x, y, and z coordinates
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template <
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typename Derivedwin,
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typename Derivedmodel,
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typename Derivedproj,
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typename Derivedviewport,
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typename Derivedscene>
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IGL_INLINE void unproject(
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const Eigen::MatrixBase<Derivedwin>& win,
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const Eigen::MatrixBase<Derivedmodel>& model,
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const Eigen::MatrixBase<Derivedproj>& proj,
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const Eigen::MatrixBase<Derivedviewport>& viewport,
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Eigen::PlainObjectBase<Derivedscene> & scene);
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template <typename Scalar>
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IGL_INLINE Eigen::Matrix<Scalar,3,1> unproject(
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const Eigen::Matrix<Scalar,3,1>& win,
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const Eigen::Matrix<Scalar,4,4>& model,
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const Eigen::Matrix<Scalar,4,4>& proj,
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const Eigen::Matrix<Scalar,4,1>& viewport);
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}
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#ifndef IGL_STATIC_LIBRARY
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# include "unproject.cpp"
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#endif
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#endif
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