cad53fcf69
New KRVector3 math functions --HG-- extra : convert_revision : svn%3A7752d6cf-9f14-4ad2-affc-04f1e67b81a5/trunk%4058
99 lines
3.5 KiB
Objective-C
99 lines
3.5 KiB
Objective-C
//
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// KRVector3.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 KRVECTOR3
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#define KRVECTOR3
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#include <math.h>
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#import "KREngine-common.h"
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class KRVector3
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{
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public:
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float x, y, z;
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//default constructor
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KRVector3(float X, float Y, float Z);
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KRVector3(float v);
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KRVector3();
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~KRVector3();
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static KRVector3 ZeroVector();
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static KRVector3 OneVector();
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static KRVector3 ForwardVector();
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static KRVector3 BackwardVector();
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static KRVector3 UpVector();
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static KRVector3 DownVector();
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static KRVector3 LeftVector();
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static KRVector3 RightVector();
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static KRVector3 Lerp(const KRVector3 &v1, const KRVector3 &v2, float d);
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static KRVector3 Slerp(const KRVector3 &v1, const KRVector3 &v2, float d);
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static float Dot(const KRVector3 &v1, const KRVector3 &v2);
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static void OrthoNormalize(KRVector3 &normal, KRVector3 &tangent); // Gram-Schmidt Orthonormalization
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KRVector3(const KRVector3& p);
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KRVector3& operator = ( const KRVector3& p );
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friend bool operator== (KRVector3 &v1, KRVector3 &v2);
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friend bool operator!= (KRVector3 &v1, KRVector3 &v2);
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// calculate and return the magnitude of this vector
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float GetMagnitude();
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// calculate the square of the magnitude (useful for comparison of magnitudes without the cost of a sqrt() function used in GetMagnitude
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float GetSqrMagnitude();
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//multiply this vector by a scalar
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KRVector3 operator*(float num) const;
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//pass in a vector, pass in a scalar, return the product
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//friend KRVector3 operator*(float num, KRVector3 const &vec);
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//add two vectors
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KRVector3 operator+(const KRVector3 &vec) const;
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//subtract two vectors
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KRVector3 operator-(const KRVector3 &vec) const;
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//normalize this vector
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void normalize();
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//calculate and return dot product
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float dot(const KRVector3 &vec) const;
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//calculate and return cross product
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KRVector3 cross(const KRVector3 &vec) const;
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};
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#endif |