AutomationNode.h

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/*
 * AutomationNode.h - Declaration of class AutomationNode, which contains
 *                       all information about an automation node
 *
 * Copyright (c) 2020 Ian Caio <iancaio_dev/at/hotmail.com>
 *
 * This file is part of LMMS - https://lmms.io
 *
 * 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 2 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 (see COPYING); if not, write to the
 * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301 USA.
 *
 */
 
#ifndef LMMS_AUTOMATION_NODE_H
#define LMMS_AUTOMATION_NODE_H
 
namespace lmms
{
 
class AutomationClip;
 
 
// NOTE: We use the default copy-assignment on the AutomationClip constructor. It's
// fine for now as we don't have dynamic allocated members, but if any are added we should
// have an user-defined one to perform a deep-copy.
class AutomationNode
{
public:
    AutomationNode(); 
    AutomationNode(AutomationClip* clip, float value, int pos);
    AutomationNode(AutomationClip* clip, float inValue, float outValue, int pos);
 
    AutomationNode& operator+=(float f)
    {
        m_inValue += f;
        m_outValue += f;
        return *this;
    }
    AutomationNode& operator-=(float f)
    {
        m_inValue -= f;
        m_outValue -= f;
        return *this;
    }
    AutomationNode& operator*=(float f)
    {
        m_inValue *= f;
        m_outValue *= f;
        return *this;
    }
    AutomationNode& operator/=(float f)
    {
        m_inValue /= f;
        m_outValue /= f;
        return *this;
    }
 
    inline const float getInValue() const
    {
        return m_inValue;
    }

    void setInValue(float value);
 
    inline const float getOutValue() const { return m_outValue; }

    void setOutValue(float value);

    void resetOutValue();

    inline const float getValueOffset() const { return m_outValue - m_inValue; }

    inline const float getInTangent() const { return m_inTangent; }

    inline void setInTangent(float tangent) { m_inTangent = tangent; }

    inline const float getOutTangent() const { return m_outTangent; }

    inline void setOutTangent(float tangent) { m_outTangent = tangent; }

    inline const bool lockedTangents() const { return m_lockedTangents; }

    inline void setLockedTangents(bool b) { m_lockedTangents = b; }

    inline void setClip(AutomationClip* clip) { m_clip = clip; }
 
private:
    AutomationClip* m_clip; 
    int m_pos; 
 
    // Values of this node
    float m_inValue;
    float m_outValue;

    float m_inTangent;
    float m_outTangent; 

    bool m_lockedTangents;
};
 
} // namespace lmms
 
#endif // LMMS_AUTOMATION_NODE_H