110 lines
2.9 KiB
C++
110 lines
2.9 KiB
C++
/*
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* AutomationPattern.cpp - Implementation of class AutomationNode which
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* holds information on a single automation pattern node
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*
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* Copyright (c) 2020 Ian Caio <iancaio_dev/at/hotmail.com>
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*
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* This file is part of LMMS - https://lmms.io
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public
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* License along with this program (see COPYING); if not, write to the
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* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301 USA.
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*
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*/
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#include "AutomationNode.h"
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#include "AutomationPattern.h"
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// Dummy constructor for the QMap
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AutomationNode::AutomationNode() :
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m_pattern(nullptr),
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m_pos(0),
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m_inValue(0),
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m_outValue(0),
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m_inTangent(0),
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m_outTangent(0)
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{
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}
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AutomationNode::AutomationNode(AutomationPattern* pat, float value, int pos) :
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m_pattern(pat),
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m_pos(pos),
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m_inValue(value),
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m_outValue(value),
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m_inTangent(0),
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m_outTangent(0)
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{
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}
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AutomationNode::AutomationNode(AutomationPattern* pat, float inValue, float outValue, int pos) :
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m_pattern(pat),
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m_pos(pos),
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m_inValue(inValue),
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m_outValue(outValue),
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m_inTangent(0),
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m_outTangent(0)
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{
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}
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/**
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* @brief Sets the inValue of an automation node
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* @param Float value to be assigned
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*/
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void AutomationNode::setInValue(float value)
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{
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m_inValue = value;
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// Recalculate the tangents from neighbor nodes
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AutomationPattern::timeMap & tm = m_pattern->getTimeMap();
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// Get an iterator pointing to this node
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AutomationPattern::timeMap::iterator it = tm.lowerBound(m_pos);
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// If it's not the first node, get the one immediately behind it
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if (it != tm.begin()) { --it; }
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// Generate tangents from the previously, current and next nodes
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m_pattern->generateTangents(it, 3);
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}
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/**
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* @brief Sets the outValue of an automation node
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* @param Float value to be assigned
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*/
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void AutomationNode::setOutValue(float value)
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{
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m_outValue = value;
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// Recalculate the tangents from neighbor nodes
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AutomationPattern::timeMap & tm = m_pattern->getTimeMap();
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// Get an iterator pointing to this node
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AutomationPattern::timeMap::iterator it = tm.lowerBound(m_pos);
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// If it's not the first node, get the one immediately behind it
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if (it != tm.begin()) { --it; }
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// Generate tangents from the previously, current and next nodes
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m_pattern->generateTangents(it, 3);
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}
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/**
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* @brief Resets the outValue so it matches inValue
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*/
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void AutomationNode::resetOutValue()
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{
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// Calls setOutValue so it also takes care of generating
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// the tangents
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setOutValue(m_inValue);
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}
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