80 lines
1.9 KiB
C++
80 lines
1.9 KiB
C++
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/*
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* ScaleEnvPointsDlg.cpp
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* ---------------------
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* Purpose: Dialog for scaling instrument envelope points on x and y axis.
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* Notes : (currently none)
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* Authors: OpenMPT Devs
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* The OpenMPT source code is released under the BSD license. Read LICENSE for more details.
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*/
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#include "stdafx.h"
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#include "resource.h"
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#include "ModInstrument.h"
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#include "ScaleEnvPointsDlg.h"
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OPENMPT_NAMESPACE_BEGIN
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double CScaleEnvPointsDlg::m_factorX = 1.0;
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double CScaleEnvPointsDlg::m_factorY = 1.0;
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double CScaleEnvPointsDlg::m_offsetY = 0.0;
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BOOL CScaleEnvPointsDlg::OnInitDialog()
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{
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CDialog::OnInitDialog();
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m_EditX.SubclassDlgItem(IDC_EDIT_FACTORX, this);
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m_EditY.SubclassDlgItem(IDC_EDIT_FACTORY, this);
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m_EditOffset.SubclassDlgItem(IDC_EDIT3, this);
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m_EditX.AllowNegative(false);
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m_EditX.SetDecimalValue(m_factorX);
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m_EditY.SetDecimalValue(m_factorY);
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m_EditOffset.SetDecimalValue(m_offsetY);
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return TRUE; // return TRUE unless you set the focus to a control
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}
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void CScaleEnvPointsDlg::OnOK()
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{
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m_EditX.GetDecimalValue(m_factorX);
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m_EditY.GetDecimalValue(m_factorY);
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m_EditOffset.GetDecimalValue(m_offsetY);
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CDialog::OnOK();
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}
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void CScaleEnvPointsDlg::Apply()
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{
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if(m_factorX > 0 && m_factorX != 1)
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{
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for(uint32 i = 0; i < m_Env.size(); i++)
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{
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m_Env[i].tick = static_cast<EnvelopeNode::tick_t>(m_factorX * m_Env[i].tick);
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// Checking that the order of points is preserved.
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if(i > 0 && m_Env[i].tick <= m_Env[i - 1].tick)
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m_Env[i].tick = m_Env[i - 1].tick + 1;
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}
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}
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if(m_factorY != 1 || m_offsetY != 0)
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{
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double factor = m_factorY;
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bool invert = false;
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if(m_factorY < 0)
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{
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invert = true;
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factor = -factor;
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}
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for(auto &pt : m_Env)
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{
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if(invert) pt.value = ENVELOPE_MAX - pt.value;
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pt.value = mpt::saturate_round<EnvelopeNode::value_t>(Clamp((factor * (pt.value - m_nCenter)) + m_nCenter + m_offsetY, double(ENVELOPE_MIN), double(ENVELOPE_MAX)));
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}
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}
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}
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OPENMPT_NAMESPACE_END
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