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/********************************************************************************
* *
* D o u b l e - P r e c i s i o n E x t e n t C l a s s *
* *
*********************************************************************************
* Copyright (C) 2004,2005 by Jeroen van der Zijp. All Rights Reserved. *
*********************************************************************************
* 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. *
* *
* This library is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU *
* Lesser General Public License for more details. *
* *
* You should have received a copy of the GNU Lesser General Public *
* License along with this library; if not, write to the Free Software *
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. *
*********************************************************************************
* $Id: FXExtentd.h 2335 2006-01-28 02:33:03Z lyle $ *
********************************************************************************/
#ifndef FXEXTENTD_H
#define FXEXTENTD_H
namespace FX {
/// Extent
class FXExtentd {
public:
FXVec2d lower;
FXVec2d upper;
public:
/// Default constructor
FXExtentd(){}
/// Copy constructor
FXExtentd(const FXExtentd& ext):lower(ext.lower),upper(ext.upper){}
/// Initialize from two vectors
FXExtentd(const FXVec2d& lo,const FXVec2d& hi):lower(lo),upper(hi){}
/// Initialize from six numbers
FXExtentd(FXdouble xlo,FXdouble xhi,FXdouble ylo,FXdouble yhi):lower(xlo,ylo),upper(xhi,yhi){}
/// Assignment
FXExtentd& operator=(const FXExtentd& ext){ lower=ext.lower; upper=ext.upper; return *this; }
/// Indexing with 0..1
FXVec2d& operator[](FXint i){ return (&lower)[i]; }
/// Indexing with 0..1
const FXVec2d& operator[](FXint i) const { return (&lower)[i]; }
/// Comparison
bool operator==(const FXExtentd& ext) const { return lower==ext.lower && upper==ext.upper;}
bool operator!=(const FXExtentd& ext) const { return lower!=ext.lower || upper!=ext.upper;}
/// Width of box
FXdouble width() const { return upper.x-lower.x; }
/// Height of box
FXdouble height() const { return upper.y-lower.y; }
/// Longest side
FXdouble longest() const;
/// shortest side
FXdouble shortest() const;
/// Length of diagonal
FXdouble diameter() const;
/// Get radius of box
FXdouble radius() const;
/// Compute diagonal
FXVec2d diagonal() const;
/// Get center of box
FXVec2d center() const;
/// Test if empty
bool empty() const;
/// Test if box contains point x,y
bool contains(FXdouble x,FXdouble y) const;
/// Test if box contains point p
bool contains(const FXVec2d& p) const;
/// Test if box properly contains another box
bool contains(const FXExtentd& ext) const;
/// Include point
FXExtentd& include(FXdouble x,FXdouble y);
/// Include point
FXExtentd& include(const FXVec2d& v);
/// Include given range into extent
FXExtentd& include(const FXExtentd& ext);
/// Test if bounds overlap
friend FXAPI bool overlap(const FXExtentd& a,const FXExtentd& b);
/// Get corner number 0..3
FXVec2d corner(FXint c) const { return FXVec2d((&lower)[c&1].x, (&lower)[(c>>1)&1].y); }
/// Union of two boxes
friend FXAPI FXExtentd unite(const FXExtentd& a,const FXExtentd& b);
/// Intersection of two boxes
friend FXAPI FXExtentd intersect(const FXExtentd& a,const FXExtentd& b);
/// Save object to a stream
friend FXAPI FXStream& operator<<(FXStream& store,const FXExtentd& ext);
/// Load object from a stream
friend FXAPI FXStream& operator>>(FXStream& store,FXExtentd& ext);
};
extern FXAPI bool overlap(const FXExtentd& a,const FXExtentd& b);
extern FXAPI FXExtentd unite(const FXExtentd& a,const FXExtentd& b);
extern FXAPI FXExtentd intersect(const FXExtentd& a,const FXExtentd& b);
extern FXAPI FXStream& operator<<(FXStream& store,const FXExtentd& ext);
extern FXAPI FXStream& operator>>(FXStream& store,FXExtentd& ext);
}
#endif