89 lines
2.1 KiB
C++
89 lines
2.1 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */
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/*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*/
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#pragma once
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#include <algorithm> // std::min, std::max
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#include <limits>
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namespace Util
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{
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/// Holds the position and size of a rectangle.
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struct Rectangle
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{
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private:
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int _x1;
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int _y1;
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int _x2;
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int _y2;
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public:
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Rectangle()
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: _x1(std::numeric_limits<int>::max())
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, _y1(std::numeric_limits<int>::max())
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, _x2(std::numeric_limits<int>::min())
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, _y2(std::numeric_limits<int>::min())
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{}
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Rectangle(int x, int y, int width, int height)
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: _x1(x)
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, _y1(y)
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, _x2(x + width)
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, _y2(y + height)
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{}
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void extend(Rectangle& rectangle)
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{
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if (rectangle._x1 < _x1)
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_x1 = rectangle._x1;
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if (rectangle._x2 > _x2)
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_x2 = rectangle._x2;
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if (rectangle._y1 < _y1)
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_y1 = rectangle._y1;
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if (rectangle._y2 > _y2)
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_y2 = rectangle._y2;
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}
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void setLeft(int x1) { _x1 = x1; }
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int getLeft() const { return _x1; }
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void setRight(int x2) { _x2 = x2; }
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int getRight() const { return _x2; }
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void setTop(int y1) { _y1 = y1; }
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int getTop() const { return _y1; }
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void setBottom(int y2) { _y2 = y2; }
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int getBottom() const { return _y2; }
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int getWidth() const { return _x2 - _x1; }
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int getHeight() const { return _y2 - _y1; }
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bool isValid() const { return _x1 <= _x2 && _y1 <= _y2; }
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bool hasSurface() const { return _x1 < _x2 && _y1 < _y2; }
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bool intersects(const Rectangle& rOther)
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{
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Util::Rectangle intersection;
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intersection._x1 = std::max(_x1, rOther._x1);
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intersection._y1 = std::max(_y1, rOther._y1);
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intersection._x2 = std::min(_x2, rOther._x2);
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intersection._y2 = std::min(_y2, rOther._y2);
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return intersection.isValid();
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}
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};
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}
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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