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/***********************************************************************
* frect.cpp - Rectangle with position and size *
* *
* This file is part of the FINAL CUT widget toolkit *
* *
* Copyright 2014-2022 Markus Gans *
* *
* FINAL CUT 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. *
* *
* FINAL CUT 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 <algorithm>
#include <utility>
#include "final/util/fpoint.h"
#include "final/util/frect.h"
#include "final/util/fsize.h"
namespace finalcut
{
//----------------------------------------------------------------------
// class FRect
//----------------------------------------------------------------------
// constructor and destructor
//----------------------------------------------------------------------
FRect::FRect (const FPoint& p, const FSize& s) noexcept
: X1{p.getX()}
, Y1{p.getY()}
, X2{p.getX() + int(s.getWidth()) - 1}
, Y2{p.getY() + int(s.getHeight()) - 1}
{ }
//----------------------------------------------------------------------
FRect::FRect (const FPoint& p1, const FPoint& p2) noexcept
: X1{p1.getX()}
, Y1{p1.getY()}
, X2{p2.getX()}
, Y2{p2.getY()}
{ }
// public methods of FRect
//----------------------------------------------------------------------
auto FRect::intersect (const FRect& r) const noexcept -> FRect
{
// intersection: this ∩ r
int p1_x = std::max(X1, r.X1);
int p1_y = std::max(Y1, r.Y1);
int p2_x = std::min(X2, r.X2);
int p2_y = std::min(Y2, r.Y2);
const FPoint p1{ p1_x, p1_y };
const FPoint p2{ p2_x, p2_y };
return { p1, p2 };
}
//----------------------------------------------------------------------
auto FRect::combined (const FRect& r) const noexcept -> FRect
{
// Union: this ∪ r
int p1_x = std::min(X1, r.X1);
int p1_y = std::min(Y1, r.Y1);
int p2_x = std::max(X2, r.X2);
int p2_y = std::max(Y2, r.Y2);
const FPoint p1{ p1_x, p1_y };
const FPoint p2{ p2_x, p2_y };
return { p1, p2 };
}
// FRect non-member operators
//----------------------------------------------------------------------
auto operator + (const FRect& r, const FSize& s) -> FRect
{
return { r.X1
, r.Y1
, std::size_t(r.X2 - r.X1) + 1 + s.getWidth()
, std::size_t(r.Y2 - r.Y1) + 1 + s.getHeight() };
}
//----------------------------------------------------------------------
auto operator - (const FRect& r, const FSize& s) -> FRect
{
return { r.X1
, r.Y1
, std::size_t(r.X2 - r.X1) + 1 - s.getWidth()
, std::size_t(r.Y2 - r.Y1) + 1 - s.getHeight() };
}
//----------------------------------------------------------------------
auto operator == (const FRect& r1, const FRect& r2) -> bool
{
return r1.X1 == r2.X1
&& r1.Y1 == r2.Y1
&& r1.X2 == r2.X2
&& r1.Y2 == r2.Y2;
}
//----------------------------------------------------------------------
auto operator != (const FRect& r1, const FRect& r2) -> bool
{
return r1.X1 != r2.X1
|| r1.Y1 != r2.Y1
|| r1.X2 != r2.X2
|| r1.Y2 != r2.Y2;
}
//----------------------------------------------------------------------
auto operator << (std::ostream& outstr, const FRect& r) -> std::ostream&
{
outstr << r.X1 << " "
<< r.Y1 << " "
<< r.X2 << " "
<< r.Y2;
return outstr;
}
//----------------------------------------------------------------------
auto operator >> (std::istream& instr, FRect& r) -> std::istream&
{
int x1{};
int y1{};
int x2{};
int y2{};
instr >> x1;
instr >> y1;
instr >> x2;
instr >> y2;
r.setCoordinates (x1, y1, x2, y2);
return instr;
}
} // namespace finalcut
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