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// Copyright (C) 2017 Klaralvdalens Datakonsult AB (KDAB).
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#ifndef BEZIEREVALUATOR_P_H
#define BEZIEREVALUATOR_P_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists for the convenience
// of other Qt classes. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#include <QtCore/private/qglobal_p.h>
QT_BEGIN_NAMESPACE
namespace Qt3DAnimation {
namespace Animation {
struct Keyframe;
class Q_AUTOTEST_EXPORT BezierEvaluator
{
public:
explicit BezierEvaluator(float time0, const Keyframe &keyframe0,
float time1, const Keyframe &keyframe1)
: m_time0(time0)
, m_time1(time1)
, m_keyframe0(keyframe0)
, m_keyframe1(keyframe1)
{
}
float valueForTime(float time) const;
float parameterForTime(float time) const;
static int findCubicRoots(const float coefficients[4], float roots[3]);
private:
float m_time0;
float m_time1;
const Keyframe &m_keyframe0;
const Keyframe &m_keyframe1;
};
} // namespace Animation
} // namespace Qt3DAnimation
QT_END_NAMESPACE
#endif // BEZIEREVALUATOR_P_H
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