49 lines
1.6 KiB
C
49 lines
1.6 KiB
C
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// 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_PROJECT_H
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#define IGL_PROJECT_H
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#include "igl_inline.h"
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#include <Eigen/Dense>
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namespace igl
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{
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// Eigen reimplementation of gluProject
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// Inputs:
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// obj* 3D objects' x, y, and z coordinates respectively
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// model model matrix
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// proj projection matrix
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// viewport viewport vector
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// Returns:
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// screen space x, y, and z coordinates respectively
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template <typename Scalar>
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IGL_INLINE Eigen::Matrix<Scalar,3,1> project(
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const Eigen::Matrix<Scalar,3,1>& obj,
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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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// Inputs:
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// V #V by 3 list of object points
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// model model matrix
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// proj projection matrix
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// viewport viewport vector
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// Outputs:
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// P #V by 3 list of screen space points
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template <typename DerivedV, typename DerivedM, typename DerivedN, typename DerivedO, typename DerivedP>
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IGL_INLINE void project(
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const Eigen::MatrixBase<DerivedV>& V,
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const Eigen::MatrixBase<DerivedM>& model,
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const Eigen::MatrixBase<DerivedN>& proj,
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const Eigen::MatrixBase<DerivedO>& viewport,
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Eigen::PlainObjectBase<DerivedP> & P);
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}
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#ifndef IGL_STATIC_LIBRARY
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# include "project.cpp"
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#endif
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#endif
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