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// Copyright 2006-2007 Nanorex, Inc. See LICENSE file for details.
/*
Name: couple.cpp
Author: Oleksandr Shevchenko
Description: coordinate 2D point management class
*/
#include "couple.h"
//----------------------------------------------------------------------------
// Constructor
//
// couple from point constructor
//
Couple::Couple(
int i,
double x,
double y,
double z)
{
switch (i)
{
case 0:
mX = y;
mY = z;
break;
case 1:
mX = x;
mY = z;
break;
case 2:
mX = x;
mY = y;
break;
}
}
//----------------------------------------------------------------------------
// Len()
//
// vector length
//
double Couple::Len() const
{
return sqrt(X()*X() + Y()*Y());
}
//----------------------------------------------------------------------------
// Len2()
//
// square of vector length
//
double Couple::Len2() const
{
return (X()*X() + Y()*Y());
}
//----------------------------------------------------------------------------
// Normalize()
//
// normalize vector to unit length
//
Couple & Couple::Normalize()
{
double length= Len();
*this /= length;
return *this;
}
//----------------------------------------------------------------------------
// Normalize()
//
// normalizes vector to unit length
//
Couple & Couple::Normalize(
double &length)
{
length = Len();
*this /= length;
return *this;
}
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