QskFlickAnimator.h

/******************************************************************************
 * QSkinny - Copyright (C) The authors
 *           SPDX-License-Identifier: BSD-3-Clause
 *****************************************************************************/
 
#ifndef QSK_FLICK_ANIMATOR_H
#define QSK_FLICK_ANIMATOR_H
 
#include "QskAnimator.h"
 
class QSK_EXPORT QskFlickAnimator : public QskAnimator
{
  public:
    QskFlickAnimator();
    ~QskFlickAnimator() override;
 
    void setAngle( qreal degrees );
    qreal angle() const;
 
    void setVelocity( qreal );
    qreal velocity() const;
 
    qreal animatedVelocity() const;
 
    void flick( qreal degrees, qreal velocity );
    void accelerate( qreal degrees, qreal velocity );
 
  protected:
    void setup() override;
    void advance( qreal value ) override final;
    void done() override;
 
    virtual void translate( qreal dx, qreal dy ) = 0;
 
  private:
    qreal m_velocity[ 2 ];
 
    qreal m_degrees;
    qreal m_cos;
    qreal m_sin;
 
    int m_elapsed;
};
 
inline qreal QskFlickAnimator::angle() const
{
    return m_degrees;
}
 
inline qreal QskFlickAnimator::velocity() const
{
    return m_velocity[ 0 ];
}
 
inline qreal QskFlickAnimator::animatedVelocity() const
{
    return m_velocity[ 1 ];
}
 
#endif