- /*
- * Copyright (C) 2021 Christopher J. Howard
- *
- * This file is part of Antkeeper source code.
- *
- * Antkeeper source code is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * Antkeeper source code is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Antkeeper source code. If not, see <http://www.gnu.org/licenses/>.
- */
-
- #ifndef ANTKEEPER_GEOM_RAY_HPP
- #define ANTKEEPER_GEOM_RAY_HPP
-
- #include "math/math.hpp"
-
- namespace geom {
-
- /**
- * Half of a line proceeding from an initial point.
- */
- template <class T>
- struct ray
- {
- typedef math::vector<T, 3> vector_type;
-
- /// Origin of the ray.
- vector_type origin;
-
- /// Normalized direction vector of the ray.
- vector_type direction;
-
- /**
- * Extrapolates from the ray origin along the ray direction vector.
- *
- * @param distance Distance to extrapolate.
- * @return Extrapolated coordinates.
- */
- vector_type extrapolate(T distance) const;
- };
-
- template <class T>
- inline typename ray<T>::vector_type ray<T>::extrapolate(T distance) const
- {
- return origin + direction * distance;
- }
-
- } // namespace geom
-
- #endif // ANTKEEPER_GEOM_RAY_HPP
-
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