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114 lines
3.5 KiB
C++
114 lines
3.5 KiB
C++
/* ScummVM - Scumm Interpreter
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* Copyright (C) 2002-2003 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 "common/scummsys.h"
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#include "common/util.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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struct Point {
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int16 x; //!< The horizontal part of the point
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int16 y; //!< The vertical part of the point
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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(int16 x1, int16 y1) : x(x1), y(y1) {};
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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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bool operator!=(const Point & p) const { return x != p.x || y != p.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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struct Rect {
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int16 top, left; //!< The point at the top left of the rectangle (part of the rect).
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int16 bottom, right; //!< The point at the bottom right of the rectangle (not part of the rect).
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Rect() : top(0), left(0), bottom(0), right(0) {}
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Rect(int16 x, int16 y) : top(0), left(0), bottom(x), right(y) {}
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Rect(int16 x1, int16 y1, int16 x2, int16 y2) : top(y1), left(x1), bottom(y2), right(x2) {}
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int16 width() const { return right - left; }
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int16 height() const { return bottom - top; }
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/*! @brief check if given position is inside this 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 this rectangle, false otherwise
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*/
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bool contains(int16 x, int16 y) const {
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return (left <= x) && (x < right) && (top <= y) && (y < bottom);
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}
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/*! @brief check if given point is inside this rectangle
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@param p the point to check
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@return true if the given point is inside this rectangle, false otherwise
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*/
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bool contains(const Point & p) const {
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return (left <= p.x) && (p.x < right) && (top <= p.y) && (p.y < bottom);
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}
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/*! @brief check if given rectangle intersects with this rectangle
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@param r the rectangle to check
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@return true if the given rectangle is inside the rectangle, false otherwise
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*/
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bool intersects(const Rect & r) const {
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return (left < r.right) && (r.left < right) && (top < r.bottom) && (r.top < bottom);
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}
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/*! @brief extend this rectangle so that it contains r
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@param r the rectangle to extend by
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*/
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void extend(const Rect & r) {
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left = MIN(left, r.left);
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right = MAX(right, r.right);
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top = MIN(top, r.top);
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bottom = MAX(bottom, r.bottom);
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}
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void grow(int16 offset) {
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top -= offset;
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left -= offset;
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bottom += offset;
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right += offset;
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}
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};
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} // End of namespace ScummVM
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#endif
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