80 lines
1.9 KiB
C++
80 lines
1.9 KiB
C++
//
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// KRAABB.h
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// KREngine
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//
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// Created by Kearwood Gilbert on 2012-08-30.
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// Copyright (c) 2012 Kearwood Software. All rights reserved.
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//
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// Axis aligned bounding box
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#ifndef KRAABB_H
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#define KRAABB_H
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#include <functional> // for hash<>
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#include "KRVector2.h"
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#include "KRVector3.h"
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namespace kraken {
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class KRMat4;
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class KRAABB {
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public:
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KRAABB(const KRVector3 &minPoint, const KRVector3 &maxPoint);
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KRAABB(const KRVector3 &corner1, const KRVector3 &corner2, const KRMat4 &modelMatrix);
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KRAABB();
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~KRAABB();
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void scale(const KRVector3 &s);
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void scale(float s);
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KRVector3 center() const;
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KRVector3 size() const;
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float volume() const;
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bool intersects(const KRAABB& b) const;
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bool contains(const KRAABB &b) const;
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bool contains(const KRVector3 &v) const;
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bool intersectsLine(const KRVector3 &v1, const KRVector3 &v2) const;
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bool intersectsRay(const KRVector3 &v1, const KRVector3 &dir) const;
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bool intersectsSphere(const KRVector3 ¢er, float radius) const;
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void encapsulate(const KRAABB & b);
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KRAABB& operator =(const KRAABB& b);
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bool operator ==(const KRAABB& b) const;
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bool operator !=(const KRAABB& b) const;
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// Comparison operators are implemented to allow insertion into sorted containers such as std::set
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bool operator >(const KRAABB& b) const;
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bool operator <(const KRAABB& b) const;
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KRVector3 min;
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KRVector3 max;
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static KRAABB Infinite();
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static KRAABB Zero();
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float longest_radius() const;
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KRVector3 nearestPoint(const KRVector3 & v) const;
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};
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} // namespace kraken
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namespace std {
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template<>
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struct hash<kraken::KRAABB> {
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public:
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size_t operator()(const kraken::KRAABB &s) const
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{
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size_t h1 = hash<kraken::KRVector3>()(s.min);
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size_t h2 = hash<kraken::KRVector3>()(s.max);
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return h1 ^ ( h2 << 1 );
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}
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};
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}
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#endif /* defined(KRAABB_H) */
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