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105 lines
3.7 KiB
C++
105 lines
3.7 KiB
C++
/* ScummVM - Scumm Interpreter
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* Copyright (C) 2001/2002 The ScummVM project
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*
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* $Header$
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*
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*/
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#ifndef COMMON_RECT_H
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#define COMMON_RECT_H
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#include "scummsys.h"
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namespace ScummVM {
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/*! @brief simple class for handling both 2D position and size
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This small class is an helper for position and size values.
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*/
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class Point {
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friend class Rect;
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private:
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int32 _x; //!< The horizontal part of the point
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int32 _y; //!< The vertical part of the point
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public:
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Point() : _x(0), _y(0) {};
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Point(const Point & p) : _x(p._x), _y(p._y) {};
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explicit Point(int32 x, int32 y) : _x(x), _y(y) {};
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Point & operator=(const Point & p) { _x = p._x; _y = p._y; return *this; };
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bool operator==(const Point & p) const { return _x == p._x && _y == p._y; };
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const int32 & getX() const { return _x; };
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const int32 & getY() const { return _y; };
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int32 & getX() { return _x; };
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int32 & getY() { return _y; };
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Point operator+(const Point & p) const { return Point(_x + p._x, _y+p._y); };
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Point operator-(const Point & p) const { return Point(_x - p._x, _y-p._y); };
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Point & operator+=(const Point & p) { _x += p._x; _y += p._y; return *this; };
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Point & operator-=(const Point & p) { _x -= p._x; _y -= p._y; return *this; };
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bool isOrigin() const { return _x == 0 && _y == 0; };
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void set(int32 x, int32 y) { _x = x; _y = y; }
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};
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/*! @brief simple class for handling a rectangular zone.
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This small class is an helper for rectangles.
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It is mostly used by the blitter class.
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*/
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class Rect {
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private:
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Point _topLeft; //!< The point at the top left of the rectangle
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Point _bottomRight; //!< The point at the bottom right of the rectangle
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public:
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Rect() : _topLeft(0, 0), _bottomRight(0,0) {}
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Rect(int32 x, int32 y) : _topLeft(0, 0), _bottomRight(x, y) {}
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Rect(int32 x1, int32 y1, int32 x2, int32 y2) : _topLeft(x1, y1), _bottomRight(x2, y2) {}
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Point size() const { return (_bottomRight - _topLeft); };
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int32 width() const { return size()._x; }
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int32 height() const { return size()._y; }
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int32 left() const { return _topLeft._x; }
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int32 right() const { return _bottomRight._x; }
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int32 top() const { return _topLeft._y; }
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int32 bottom() const { return _bottomRight._y; }
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const Point & topLeft() const { return _topLeft; }
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const Point & bottomRight() const { return _bottomRight; }
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/*! @brief check if given position is inside the rectangle
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@param x the horizontal position to check
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@param y the vertical position to check
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@return true if the given position is inside the rectangle, false otherwise
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*/
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bool isInside(int32 x, int32 y) const {
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return (_topLeft._x <= x) && (_bottomRight._x > x) && (_topLeft._y <= y) && (_bottomRight._y > y);
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}
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/*! @brief check if given point is inside the rectangle
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@param p the point to check
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@return true if the given point is inside the rectangle, false otherwise
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*/
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bool isInside(const Point & p) const {
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return (_topLeft._x <= p._x) && (_bottomRight._x > p._x) && (_topLeft._y <= p._y) && (_bottomRight._y > p._y);
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}
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bool clip(Rect & r) const;
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};
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}; // End of namespace ScummVM
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#endif
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