/usr/include/terralib/kernel/TeCoord2D.h is in libterralib-dev 4.3.0+dfsg.2-10.
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TerraLib - a library for developing GIS applications.
Copyright © 2001-2007 INPE and Tecgraf/PUC-Rio.
This code is part of the TerraLib library.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
You should have received a copy of the GNU Lesser General Public
License along with this library.
The authors reassure the license terms regarding the warranties.
They specifically disclaim any warranties, including, but not limited to,
the implied warranties of merchantability and fitness for a particular purpose.
The library provided hereunder is on an "as is" basis, and the authors have no
obligation to provide maintenance, support, updates, enhancements, or modifications.
In no event shall INPE and Tecgraf / PUC-Rio be held liable to any party for direct,
indirect, special, incidental, or consequential damages arising out of the use
of this library and its documentation.
*************************************************************************************/
/*! \file TeCoord2D.h
\brief This file contains the definition of a classes to handle 2D coordinates
*/
#ifndef __TERRALIB_INTERNAL_COORD2D_H
#define __TERRALIB_INTERNAL_COORD2D_H
#include <math.h>
#include "TeDefines.h"
#include "TePrecision.h"
#include <vector>
using namespace std;
//! A class for handling 2D coordinates
class TL_DLL TeCoord2D
{
public:
double x_; //!< x coordinate
double y_; //!< y coordinate
//! Default contructor
TeCoord2D ( const double& x = 0., const double& y = 0. ):
x_ ( x ), y_ ( y ) {}
//! Copy constructor
TeCoord2D (const TeCoord2D& cd)
{x_ = cd.x_; y_ = cd.y_;}
//! Operator =
TeCoord2D& operator= ( const TeCoord2D& cd )
{
if ( this != &cd )
{
x_ = cd.x_; y_ = cd.y_;
}
return *this;
}
//! Empty destructor.
~TeCoord2D () { }
//! Returns the X componente of the coordinate
const double& x () const
{ return x_; }
//! Sets the X componente of the coordinate
void x ( const double& valX )
{ x_ = valX; }
//! Returns the Y componente of the coordinate
const double& y () const
{ return y_; }
//! Sets the Y componente of the coordinate
void y(const double& valY)
{ y_ = valY; }
//! Sets the X and Y componentes of the coordinate
void setXY(const double& xVal, const double& yVal )
{ x_= xVal; y_= yVal; }
//! Adds two coordinates
void operator+=(const TeCoord2D& cd) {x_ += cd.x_; y_ += cd.y_;}
//! Returns TRUE if current coordinate is smaller than or equal to TeCoord2D cd; returns FALSE otherwise
bool operator<= (const TeCoord2D& cd) const
{return (( y_ - cd.y_ <= TePrecision::instance().precision() ) &&
( x_ - cd.x_ <= TePrecision::instance().precision() ) );}
//! Returns TRUE if current coordinate is equal to TeCoord2D cd; returns FALSE otherwise
bool operator== (const TeCoord2D& cd) const
{return ( ( fabs (y_ - cd.y_) < TePrecision::instance().precision() )
&& ( fabs (x_ - cd.x_) < TePrecision::instance().precision() ) ); }
//! Returns TRUE if current coordinate is not equal to TeCoord2D cd; returns FALSE otherwise
bool operator!= (const TeCoord2D& cd) const
{return ( ( fabs (y_ - cd.y_) >= TePrecision::instance().precision() )
|| ( fabs (x_ - cd.x_) >= TePrecision::instance().precision() ) );}
//! Returns TRUE if current coordinate is smaller than TeCoord2D cd; returns FALSE otherwise
bool operator< (const TeCoord2D& cd) const
{return ( y_ - cd.y_ < TePrecision::instance().precision()
&& x_ - cd.x_ < TePrecision::instance().precision() );}
//! Returns TRUE if current coordinate greater than maximum allowed; returns FALSE otherwise
bool tooBig ()
{return ( y_ > TeMAXFLOAT/10.|| x_ > TeMAXFLOAT/10.);}
//! Rescales the coordinate by a value in X (xscale) and in Y (yscale)
void scale ( const double xscale, const double yscale )
{ x_ = x_* xscale; y_ = y_ * yscale; }
//! Returns the middle coordinate in horizontal direction between current coordinate and rhs
TeCoord2D halfWayHoriz ( TeCoord2D& rhs )
{
TeCoord2D mid (( rhs.x() + x() ) / 2., y() );
return mid;
}
//! Returns the middle coordinate in vertical direction between current coordinate and rhs
TeCoord2D halfWayVert ( TeCoord2D& rhs )
{
TeCoord2D mid ( x(), ( y() + rhs.y() ) / 2. );
return mid;
}
//! A false interface to set an obejct identifier
void objectId(const string& /* id */ )
{ return; }
};
//! An structure that contains a pair of coordinates
struct TL_DLL TeCoordPair
{
TeCoord2D pt1; //!< First coordinate value.
TeCoord2D pt2; //!< Second coordinate value.
//! Default contructor: [(0.0),(0.0)]
TeCoordPair():
pt1(TeCoord2D(0.0,0.0)),
pt2(TeCoord2D(0.0,0.0))
{}
//! Constructor with parameters
TeCoordPair(const TeCoord2D& p1, const TeCoord2D& p2):
pt1(p1),
pt2(p2)
{}
// overload
bool operator==( const TeCoordPair& external ) const
{
return ( ( pt1 == external.pt1 ) && ( pt2 == external.pt2 ) );
}
};
//! A vector of pairs of coordinates
typedef vector<TeCoordPair> TeCoordPairVect;
#endif
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