qd_contour.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 QDENGINE_QDCORE_QD_CONTOUR_H
#define QDENGINE_QDCORE_QD_CONTOUR_H

#include "qdengine/parser/xml_fwd.h"
#include "qdengine/xmath.h"

namespace Common {
class WriteStream;
}

namespace QDEngine {


class qdContour {
public:
    enum qdContourType {
        CONTOUR_RECTANGLE,
        CONTOUR_CIRCLE,
        CONTOUR_POLYGON
    };

    qdContour(qdContourType tp = CONTOUR_POLYGON);
    qdContour(const qdContour &ct);
    virtual ~qdContour();

    qdContour &operator = (const qdContour &ct);

    qdContourType contour_type() const {
        return _contour_type;
    }
    void set_contour_type(qdContourType tp) {
        _contour_type = tp;
    }

    int size_x() const {
        return _size.x;
    }
    int size_y() const {
        return _size.y;
    }

    bool is_inside(const Vect2s &pos) const;

    virtual bool save_script(Common::WriteStream &fh, int indent = 0) const;
    virtual bool load_script(const xml::tag *p);


    void add_contour_point(const Vect2s &pt);

    void insert_contour_point(const Vect2s &pt, int insert_pos = 0);
    bool remove_contour_point(int pos);
    bool update_contour_point(const Vect2s &pt, int pos);

    void clear_contour() {
        _contour.clear();
    }

    void divide_contour(int shift = 1);
    void mult_contour(int shift = 1);
    void shift_contour(int dx, int dy);

    const Vect2s &get_point(int pos) const {
        return _contour[pos];
    }

    void createMaskOld(int x0, int y0, int x1, int y1);

    const byte *maskData() const {
        return &*_mask.begin();
    }

    const Vect2s &mask_size() const {
        return _size;
    }

    const Vect2s &mask_pos() const {
        return _mask_pos;
    }

    int contour_size() const {
        return _contour.size();
    }
    const Std::vector<Vect2s> &get_contour() const {
        return _contour;
    }

    bool is_mask_empty() const {
        return _contour.empty();
    }

    bool update_contour();

    // можно ли замкнуть текущий контур.
    // для типов контура CONTOUR_CIRCLE и CONTOUR_RECTANGLE
    // всегда возвращается false
    bool can_be_closed() const;

    bool is_contour_empty() const;

private:
    qdContourType _contour_type;

    Vect2s _size;

    Vect2s _mask_pos;

    Std::vector<byte> _mask;


    Std::vector<Vect2s> _contour;
};

} // namespace QDEngine

#endif // QDENGINE_QDCORE_QD_CONTOUR_H