polygon.h

/* 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 3 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, see <http://www.gnu.org/licenses/>.
 *
 */

#ifndef COMMON_POLYGON_H
#define COMMON_POLYGON_H

#include "common/scummsys.h"

#ifdef ENABLE_VKEYBD

#include "common/array.h"
#include "common/rect.h"

namespace Common {

struct Polygon {

    Polygon() {}
    Polygon(Array<Point> p) : _points(p) {
        for (uint i = 0; i < p.size(); i++) {
            _bound.extend(Rect(p[i].x, p[i].y, p[i].x, p[i].y));
        }
    }
    Polygon(Point *p, int n) {
        for (int i = 0; i < n; i++) {
            addPoint(p[i]);
        }
    }

    void addPoint(const Point &p) {
        _points.push_back(p);
        _bound.extend(Rect(p.x, p.y, p.x, p.y));
    }

    void addPoint(int16 x, int16 y) {
        addPoint(Point(x, y));
    }

    uint getPointCount() {
        return _points.size();
    }

    bool contains(int16 x, int16 y) const;

    bool contains(const Point &p) const {
        return contains(p.x, p.y);
    }

    void moveTo(int16 x, int16 y) {
        int16 dx = x - ((_bound.right + _bound.left) / 2);
        int16 dy = y - ((_bound.bottom + _bound.top) / 2);
        translate(dx, dy);
    }

    void moveTo(const Point &p) {
        moveTo(p.x, p.y);
    }

    void translate(int16 dx, int16 dy) {
        Array<Point>::iterator it;
        for (it = _points.begin(); it != _points.end(); it++) {
            it->x += dx;
            it->y += dy;
        }
    }

    Rect getBoundingRect() const {
        return _bound;
    }

private:
    Array<Point> _points;
    Rect _bound;
};

} // End of namespace Common

#endif // #ifdef ENABLE_VKEYBD

#endif // #ifndef COMMON_POLYGON_H