winamp/Src/external_dependencies/openmpt-trunk/mptrack/ScaleEnvPointsDlg.cpp
2024-09-24 14:54:57 +02:00

80 lines
1.9 KiB
C++

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