vector3.h

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/*
This program is distributed under the terms of the 'MIT license'. The text
of this licence follows...

Copyright (c) 2005 J.D.Medhurst (a.k.a. Tixy)

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
*/

#ifndef __VECTOR_H__
#define __VECTOR_H__

#include "fix.h"



class Vector3
    {
public:
    inline Vector3()
        {}

    inline Vector3(fix x,fix y,fix z)
        : X(x), Y(y), Z(z) {}

    IMPORT Vector3 operator - () const;

    IMPORT Vector3 operator + (const Vector3& vector) const;

    IMPORT Vector3 operator - (const Vector3& vector) const;

    IMPORT Vector3 operator * (fix scalar) const;

    IMPORT Vector3 operator / (fix scalar) const;

    IMPORT Vector3& operator += (const Vector3& vector);

    IMPORT Vector3& operator -= (const Vector3& vector);

    IMPORT Vector3& operator *= (fix scalar);

    IMPORT Vector3& operator /= (fix scalar);

    IMPORT bool operator == (const Vector3& vector) const;

    inline bool operator != (const Vector3& vector) const
        { return !(*this==vector); }

    IMPORT fix DotProduct(const Vector3& vector) const;

    IMPORT Vector3 CrossProduct(const Vector3& vector) const;

    IMPORT ufix Length() const;

    IMPORT int CompareLength(ufix length) const;

    IMPORT int CompareLengths(const Vector3& vector) const;

    IMPORT uint32_t LengthSquared(uint32_t& fraction) const;

    IMPORT Vector3 UnitVector() const;

    IMPORT Vector3 Normal(const Vector3& vector) const;

    IMPORT fixangle Angle(const Vector3& vector) const;

    IMPORT Vector3 Normal(const Vector3& point1,const Vector3& point2) const;

    IMPORT fixangle Angle(const Vector3& point1,const Vector3& point2) const;

    IMPORT static void Translate(Vector3* outVectors,unsigned vectorCount,const Vector3* inVectors,const Vector3& offset);

    IMPORT static void Scale(Vector3* outVectors,unsigned vectorCount,const Vector3* inVectors,fix scale);

private:

    void NormaliseComponents(unsigned bits);

public:
    fix X; 
    fix Y; 
    fix Z; 
    };


typedef Vector3 Point3;



class Matrix3
    {
public:
    inline Matrix3()
        {}

    inline Matrix3(const Vector3 row1,const Vector3 row2,const Vector3 row3)
        : Row1(row1), Row2(row2), Row3(row3) {}

    IMPORT Vector3 operator * (const Vector3& vector) const;

    IMPORT Matrix3 Transposition() const;

    IMPORT void Transform(Vector3* outVectors,unsigned vectorCount,const Vector3* inVectors);
public:
    Vector3 Row1; 
    Vector3 Row2; 
    Vector3 Row3; 
};

 // End of group

#endif

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