| // This file is part of libigl, a simple c++ geometry processing library. |
| // |
| // Copyright (C) 2015 Alec Jacobson <alecjacobson@gmail.com> |
| // |
| // This Source Code Form is subject to the terms of the Mozilla Public License |
| // v. 2.0. If a copy of the MPL was not distributed with this file, You can |
| // obtain one at http://mozilla.org/MPL/2.0/. |
| #include "frustum.h" |
| template < typename DerivedP> |
| IGL_INLINE void igl::frustum( |
| const typename DerivedP::Scalar left, |
| const typename DerivedP::Scalar right, |
| const typename DerivedP::Scalar bottom, |
| const typename DerivedP::Scalar top, |
| const typename DerivedP::Scalar nearVal, |
| const typename DerivedP::Scalar farVal, |
| Eigen::PlainObjectBase<DerivedP> & P) |
| { |
| P.setConstant(4,4,0.); |
| P(0,0) = (2.0 * nearVal) / (right - left); |
| P(1,1) = (2.0 * nearVal) / (top - bottom); |
| P(0,2) = (right + left) / (right - left); |
| P(1,2) = (top + bottom) / (top - bottom); |
| P(2,2) = -(farVal + nearVal) / (farVal - nearVal); |
| P(3,2) = -1.0; |
| P(2,3) = -(2.0 * farVal * nearVal) / (farVal - nearVal); |
| } |
| |
| #ifdef IGL_STATIC_LIBRARY |
| // Explicit template instantiation |
| // generated by autoexplicit.sh |
| template void igl::frustum<Eigen::Matrix<float, 4, 4, 0, 4, 4> >(Eigen::Matrix<float, 4, 4, 0, 4, 4>::Scalar, Eigen::Matrix<float, 4, 4, 0, 4, 4>::Scalar, Eigen::Matrix<float, 4, 4, 0, 4, 4>::Scalar, Eigen::Matrix<float, 4, 4, 0, 4, 4>::Scalar, Eigen::Matrix<float, 4, 4, 0, 4, 4>::Scalar, Eigen::Matrix<float, 4, 4, 0, 4, 4>::Scalar, Eigen::PlainObjectBase<Eigen::Matrix<float, 4, 4, 0, 4, 4> >&); |
| #endif |
