78 lines
2.2 KiB
C++
78 lines
2.2 KiB
C++
////////////////////////////////////////////////////////////////////////////////
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//
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// Paella
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// Copyright (C) 2015 - Thomas FORGIONE, Emilie JALRAS, Marion LENFANT, Thierry MALON, Amandine PAILLOUX
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// Authors :
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// Thomas FORGIONE
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// Emilie JALRAS
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// Marion LENFANT
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// Thierry MALON
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// Amandine PAILLOUX
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//
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// This file is part of the project Paella
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// This software is provided 'as-is', without any express or implied warranty.
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// In no event will the authors be held liable for any damages arising from the use of this software.
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//
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// Permission is granted to anyone to use this software for any purpose,
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// including commercial applications, and to alter it and redistribute it freely,
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// subject to the following restrictions:
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//
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// 1. The origin of this software must not be misrepresented;
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// you must not claim that you wrote the original software.
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// If you use this software in a product, an acknowledgment
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// in the product documentation would be appreciated but is not required.
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//
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// 2. Altered source versions must be plainly marked as such,
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// and must not be misrepresented as being the original software.
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//
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// 3. This notice may not be removed or altered from any source distribution.
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////////////////////////////////////////////////////////////////////////////////
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#ifndef VECTOR_FUNCTIONS_HPP
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#define VECTOR_FUNCTIONS_HPP
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#include <cmath>
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#include <SFML/System/Vector3.hpp>
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using sf::Vector3;
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template <class T>
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Vector3<T> makeVector(Vector3<T> const& from, Vector3<T> const& to)
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{
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return to - from;
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}
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template <class T>
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double dotProduct(Vector3<T> const& v1, Vector3<T> const& v2)
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{
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return v1.x * v2.x + v1.y * v2.y + v1.z * v2.z;
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}
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template <class T>
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double norm2(Vector3<T> const& vecteur)
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{
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return dotProduct(vecteur, vecteur);
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}
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template <class T>
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double norm(Vector3<T> const& vecteur)
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{
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return sqrt(norm2(vecteur));
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}
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template <class T>
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void normalize(Vector3<T>& vecteur)
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{
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vecteur /= norm(vecteur);
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}
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template <class T>
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Vector3<T> crossProduct(Vector3<T> const& v1, Vector3<T> const& v2)
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{
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return Vector3<T>{v1.y * v2.z - v1.z * v2.y,
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v1.z * v2.x - v1.x * v2.z,
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v1.x * v2.y - v1.y * v2.x
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};
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}
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#endif // VECTOR_FUNCTIONS_HPP
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