119 lines
3.7 KiB
C++
119 lines
3.7 KiB
C++
//
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// KRVector2.h
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// KREngine
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//
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// Copyright 2012 Kearwood Gilbert. All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without modification, are
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// permitted provided that the following conditions are met:
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//
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// 1. Redistributions of source code must retain the above copyright notice, this list of
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// conditions and the following disclaimer.
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//
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// 2. Redistributions in binary form must reproduce the above copyright notice, this list
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// of conditions and the following disclaimer in the documentation and/or other materials
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// provided with the distribution.
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//
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// THIS SOFTWARE IS PROVIDED BY KEARWOOD GILBERT ''AS IS'' AND ANY EXPRESS OR IMPLIED
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// WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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// FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL KEARWOOD GILBERT OR
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// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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// ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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// ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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//
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// The views and conclusions contained in the software and documentation are those of the
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// authors and should not be interpreted as representing official policies, either expressed
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// or implied, of Kearwood Gilbert.
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//
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#ifndef KRVECTOR2
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#define KRVECTOR2
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#include "KREngine-common.h"
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class KRVector2 {
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public:
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union {
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struct {
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float x, y;
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};
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float c[2];
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};
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KRVector2();
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KRVector2(float X, float Y);
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KRVector2(float v);
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KRVector2(float *v);
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KRVector2(const KRVector2 &v);
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~KRVector2();
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// KRVector2 swizzle getters
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KRVector2 yx() const;
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// KRVector2 swizzle setters
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void yx(const KRVector2 &v);
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KRVector2& operator =(const KRVector2& b);
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KRVector2 operator +(const KRVector2& b) const;
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KRVector2 operator -(const KRVector2& b) const;
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KRVector2 operator +() const;
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KRVector2 operator -() const;
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KRVector2 operator *(const float v) const;
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KRVector2 operator /(const float v) const;
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KRVector2& operator +=(const KRVector2& b);
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KRVector2& operator -=(const KRVector2& b);
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KRVector2& operator *=(const float v);
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KRVector2& operator /=(const float v);
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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 KRVector2& b) const;
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bool operator <(const KRVector2& b) const;
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bool operator ==(const KRVector2& b) const;
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bool operator !=(const KRVector2& b) const;
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float& operator[](unsigned i);
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float operator[](unsigned i) const;
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float sqrMagnitude() const;
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float magnitude() const;
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void normalize();
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static KRVector2 Normalize(const KRVector2 &v);
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static float Cross(const KRVector2 &v1, const KRVector2 &v2);
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static float Dot(const KRVector2 &v1, const KRVector2 &v2);
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static KRVector2 Min();
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static KRVector2 Max();
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static KRVector2 Zero();
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static KRVector2 One();
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void setUniform(GLint location) const;
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private:
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};
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namespace std {
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template<>
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struct hash<KRVector2> {
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public:
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size_t operator()(const KRVector2 &s) const
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{
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size_t h1 = hash<float>()(s.x);
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size_t h2 = hash<float>()(s.y);
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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
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