abstract_animation.h

/* mathvizanimator
 * Copyright (C) 2023 codingwithmagga
 *
 * 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 LIBS_MVA_GUI_INCLUDE_ANIMATIONS_ABSTRACT_ANIMATION_H_
#define LIBS_MVA_GUI_INCLUDE_ANIMATIONS_ABSTRACT_ANIMATION_H_
 
#include <QObject>
#include <QString>
 
#include "abstractitem.h"
 
class AbstractAnimation : public QObject {
    Q_OBJECT
 
    Q_PROPERTY(qreal start_time READ startTime WRITE setStartTime NOTIFY startTimeChanged FINAL)
    Q_PROPERTY(qreal duration READ duration WRITE setDuration NOTIFY durationChanged FINAL)
 
  public:
    enum class State { NOT_STARTED, RUNNING, DONE };
 
    explicit AbstractAnimation(QObject* parent = Q_NULLPTR);
 
    qreal startTime() const { return m_start_time; }
    qreal duration() const { return m_duration; }
 
    void setStartTime(const qreal start_time);
    void setDuration(const qreal duration);
 
    State state(const qreal time) const;
 
    void setFrameTime(const qreal frame_time);
 
    void setProperties(const QVariantMap& properties);
 
    virtual QJsonObject toJson() const;
    virtual void applyAnimation(AbstractItem* item, const qreal time) const = 0;
 
    inline bool operator<(const AbstractAnimation& rhs) { return startTime() < rhs.startTime(); }
 
  signals:
    void startTimeChanged(const qreal new_start_time);
    void durationChanged(const qreal new_duration);
 
  private:
    bool isStarted(const qreal time) const;
    bool isDone(const qreal time) const;
 
    qreal m_start_time = 0.0;
    qreal m_duration = 1.0;
 
    qreal m_frame_time = 1.0 / 24.0;
};
 
#endif // LIBS_MVA_GUI_INCLUDE_ANIMATIONS_ABSTRACT_ANIMATION_H_