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/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* $URL$
* $Id$
*
*/
#ifndef COMMON_SHAPE_H
#define COMMON_SHAPE_H
#include "common/scummsys.h"
#include "common/util.h"
namespace Common {
struct Rect;
/*! @brief simple class for handling both 2D position and size
This small class is an helper for position and size values.
*/
struct Point {
int16 x; //!< The horizontal part of the point
int16 y; //!< The vertical part of the point
Point() : x(0), y(0) {}
Point(const Point &p) : x(p.x), y(p.y) {}
explicit Point(int16 x1, int16 y1) : x(x1), y(y1) {}
Point & operator=(const Point & p) { x = p.x; y = p.y; return *this; };
bool operator==(const Point & p) const { return x == p.x && y == p.y; };
bool operator!=(const Point & p) const { return x != p.x || y != p.y; };
/**
* Return the square of the distance between this point and the point p.
*
* @param p the other point
* @return the distance between this and p
*/
uint sqrDist(const Point & p) const {
int diffx = ABS(p.x - x);
if (diffx >= 0x1000)
return 0xFFFFFF;
int diffy = ABS(p.y - y);
if (diffy >= 0x1000)
return 0xFFFFFF;
return uint(diffx*diffx + diffy*diffy);
}
};
/*! @brief simple interface that provides common methods for 2D shapes
*/
struct Shape {
/*! @brief check if given position is inside this shape
@param x the horizontal position to check
@param y the vertical position to check
@return true if the given position is inside this shape, false otherwise
*/
virtual bool contains(int16 x, int16 y) const = 0;
/*! @brief check if given point is inside this shape
@param p the point to check
@return true if the given point is inside this shape, false otherwise
*/
virtual bool contains(const Point &p) const = 0;
virtual void moveTo(int16 x, int16 y) = 0;
virtual void moveTo(const Point &p) = 0;
virtual void translate(int16 dx, int16 dy) = 0;
virtual Rect getBoundingRect() const = 0;
};
} // end of namespace Common
#endif
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