55 lines
1.6 KiB
C++
55 lines
1.6 KiB
C++
/*
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* This file is part of the Colobot: Gold Edition source code
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* Copyright (C) 2001-2023, Daniel Roux, EPSITEC SA & TerranovaTeam
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* http://epsitec.ch; http://colobot.info; http://github.com/colobot
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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* See the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see http://gnu.org/licenses
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*/
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#pragma once
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#include <glm/glm.hpp>
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namespace Math
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{
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struct Sphere
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{
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Sphere(const glm::vec3& pos = glm::vec3(0, 0, 0), float radius = 0.0f)
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: pos(pos), radius(radius) {}
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glm::vec3 pos;
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float radius;
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};
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//! Compute distance between given \a point and \a sphere
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inline float DistanceToSphere(const glm::vec3& point, const Sphere& sphere)
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{
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return glm::distance(point, sphere.pos) - sphere.radius;
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}
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inline float DistanceBetweenSpheres(const Sphere& sphere1, const Sphere& sphere2)
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{
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return glm::distance(sphere1.pos, sphere2.pos) - sphere1.radius - sphere2.radius;
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}
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inline Sphere BoundingSphereForBox(glm::vec3 mins, glm::vec3 maxs)
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{
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auto centroid = (maxs + mins) / 2.0f;
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auto halfExtent = (maxs - centroid);
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return Sphere{centroid, glm::length(halfExtent)};
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}
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} // namespace Math
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