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/********************************************************************************
* *
* R e c t a n g l e C l a s s *
* *
*********************************************************************************
* Copyright (C) 1994,2022 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 3 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 program. If not, see <http://www.gnu.org/licenses/> *
********************************************************************************/
#include "xincs.h"
#include "fxver.h"
#include "fxdefs.h"
#include "fxmath.h"
#include "FXArray.h"
#include "FXHash.h"
#include "FXStream.h"
#include "FXSize.h"
#include "FXPoint.h"
#include "FXRectangle.h"
using namespace FX;
/*******************************************************************************/
namespace FX {
// Fast inlines
static inline FXshort _max(FXshort a,FXshort b){ return a>b?a:b; }
static inline FXshort _min(FXshort a,FXshort b){ return a<b?a:b; }
// Grow by amount
FXRectangle& FXRectangle::grow(FXshort margin){
x-=margin;
y-=margin;
w+=(margin+margin);
h+=(margin+margin);
return *this;
}
// Grow by different amounts horizontally and vertically
FXRectangle& FXRectangle::grow(FXshort hormargin,FXshort vermargin){
x-=hormargin;
y-=vermargin;
w+=(hormargin+hormargin);
h+=(vermargin+vermargin);
return *this;
}
// Grow by different amounts on all sides
FXRectangle& FXRectangle::grow(FXshort leftmargin,FXshort rightmargin,FXshort topmargin,FXshort bottommargin){
x-=leftmargin;
y-=topmargin;
w+=(leftmargin+rightmargin);
h+=(topmargin+bottommargin);
return *this;
}
// Shrink by amount
FXRectangle& FXRectangle::shrink(FXshort margin){
x+=margin;
y+=margin;
w-=(margin+margin);
h-=(margin+margin);
return *this;
}
// Shrink by different amounts horizontally and vertically
FXRectangle& FXRectangle::shrink(FXshort hormargin,FXshort vermargin){
x+=hormargin;
y+=vermargin;
w-=(hormargin+hormargin);
h-=(vermargin+vermargin);
return *this;
}
// Shrink by different amounts on all sides
FXRectangle& FXRectangle::shrink(FXshort leftmargin,FXshort rightmargin,FXshort topmargin,FXshort bottommargin){
x+=leftmargin;
y+=topmargin;
w-=(leftmargin+rightmargin);
h-=(topmargin+bottommargin);
return *this;
}
// Union with rectangle
FXRectangle& FXRectangle::operator+=(const FXRectangle &r){
w=_max(x+w,r.x+r.w); x=_min(x,r.x); w-=x;
h=_max(y+h,r.y+r.h); y=_min(y,r.y); h-=y;
return *this;
}
// Intersection with rectangle
FXRectangle& FXRectangle::operator*=(const FXRectangle &r){
w=_min(x+w,r.x+r.w); x=_max(x,r.x); w-=x;
h=_min(y+h,r.y+r.h); y=_max(y,r.y); h-=y;
return *this;
}
// Union between rectangles
FXRectangle FXRectangle::operator+(const FXRectangle& r) const {
FXshort xx=_min(x,r.x);
FXshort ww=_max(x+w,r.x+r.w)-xx;
FXshort yy=_min(y,r.y);
FXshort hh=_max(y+h,r.y+r.h)-yy;
return FXRectangle(xx,yy,ww,hh);
}
// Intersection between rectangles
FXRectangle FXRectangle::operator*(const FXRectangle& r) const {
FXshort xx=_max(x,r.x);
FXshort ww=_min(x+w,r.x+r.w)-xx;
FXshort yy=_max(y,r.y);
FXshort hh=_min(y+h,r.y+r.h)-yy;
return FXRectangle(xx,yy,ww,hh);
}
// Pieces of this rectangle after taking a bite out of it
void FXRectangle::bite(FXRectangle pieces[],const FXRectangle& b) const {
pieces[0].x=pieces[1].x=x;
pieces[0].y=pieces[3].y=y;
pieces[2].w=pieces[3].w=x+w;
pieces[1].h=pieces[2].h=y+h;
pieces[1].w=pieces[2].x=b.x;
pieces[0].h=pieces[1].y=b.y;
pieces[0].w=pieces[3].x=b.x+b.w;
pieces[2].y=pieces[3].h=b.y+b.h;
if(pieces[1].w<pieces[1].x) pieces[1].w=pieces[2].x=pieces[1].x;
if(pieces[0].h<pieces[0].y) pieces[0].h=pieces[1].y=pieces[0].y;
if(pieces[3].x>pieces[3].w) pieces[3].x=pieces[0].w=pieces[3].w;
if(pieces[2].y>pieces[2].h) pieces[2].y=pieces[3].h=pieces[2].h;
if(pieces[1].w>pieces[3].x) pieces[1].w=pieces[2].x=pieces[3].x;
if(pieces[0].h>pieces[2].y) pieces[0].h=pieces[1].y=pieces[2].y;
if(pieces[3].x<pieces[1].w) pieces[3].x=pieces[0].w=pieces[1].w;
if(pieces[2].y<pieces[0].h) pieces[2].y=pieces[3].h=pieces[0].h;
pieces[0].w-=pieces[0].x;
pieces[0].h-=pieces[0].y;
pieces[1].w-=pieces[1].x;
pieces[1].h-=pieces[1].y;
pieces[2].w-=pieces[2].x;
pieces[2].h-=pieces[2].y;
pieces[3].w-=pieces[3].x;
pieces[3].h-=pieces[3].y;
}
// Save object to a stream
FXStream& operator<<(FXStream& store,const FXRectangle& r){
store << r.x << r.y << r.w << r.h;
return store;
}
// Load object from a stream
FXStream& operator>>(FXStream& store,FXRectangle& r){
store >> r.x >> r.y >> r.w >> r.h;
return store;
}
}
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