source: GTP/trunk/Lib/Illum/GPUObscurancesGT/src/VECTOR2D.cpp @ 930

//////////////////////////////////////////////////////////////////////////////////////////
//      VECTOR2D.cpp
//      Function definitions for 2d vector class
//      You may use this code however you wish, but if you do, please credit me and
//      provide a link to my website in a readme file or similar
//      Downloaded from: www.paulsprojects.net
//      Created:        8th November 2002
//////////////////////////////////////////////////////////////////////////////////////////      

#include "Maths.h"

void VECTOR2D::Normalize()
{
        float length;
        float scalefactor;
        length=GetLength();

        if(length==1 || length==0)                      //return if length is 1 or 0
                return;

        scalefactor = 1.0f/length;
        x *= scalefactor;
        y *= scalefactor;
}

VECTOR2D VECTOR2D::GetNormalized() const
{
        VECTOR2D result(*this);

        result.Normalize();

        return result;
}

VECTOR2D operator*(float scaleFactor, const VECTOR2D & rhs)
{
        return rhs*scaleFactor;
}

bool VECTOR2D::operator==(const VECTOR2D & rhs) const
{
        if(x==rhs.x && y==rhs.y)
                return true;

        return false;
}