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/*
* VibratoPointItertorByClock.cs
* Copyright © 2010-2011 kbinani
*
* This file is part of org.kbinani.cadencii.
*
* org.kbinani.cadencii is free software; you can redistribute it and/or
* modify it under the terms of the GPLv3 License.
*
* org.kbinani.cadencii 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.
*/
#if JAVA
package org.kbinani.cadencii;
import java.util.*;
import org.kbinani.vsq.*;
#else
using System;
using org.kbinani.vsq;
using org.kbinani.java.util;
namespace org.kbinani.cadencii {
using boolean = System.Boolean;
#endif
/// <summary>
/// ビブラート用のデータ点のリストを取得します。返却されるリストは、{クロック, ビブラートの振幅(ノートナンバー単位)}の値ペアとなっています
/// </summary>
#if JAVA
public class VibratoPointIteratorByClock implements Iterator<Double> {
#else
public class VibratoPointIteratorByClock : Iterator<Double> {
#endif
VsqFileEx mVsq;
VibratoBPList mRate;
int mStartRate;
VibratoBPList mDepth;
int mStartDepth;
int mClockStart;
int mClockWidth;
double mSec0;
double mSec1;
double mPhase = 0.0;
double mAmplitude;
float mPeriod;
float mOmega;
double mSec;
float mFadeWidth;
int mIndex;
boolean mFirst = true;
public void rewind() {
mSec0 = mVsq.getSecFromClock( mClockStart );
mSec1 = mVsq.getSecFromClock( mClockStart + mClockWidth );
mFadeWidth = (float)(mSec1 - mSec0) * 0.2f;
mPhase = 0;
mStartRate = mRate.getValue( 0.0f, mStartRate );
mStartDepth = mDepth.getValue( 0.0f, mStartDepth );
mAmplitude = mStartDepth * 2.5f / 127.0f / 2.0f; // ビブラートの振幅。
mPeriod = VibratoPointIteratorBySec.getPeriodFromRate( mStartRate ); //ビブラートの周期、秒
mOmega = (float)(2.0 * Math.PI / mPeriod); // 角速度(rad/sec)
mSec = mSec0;
mIndex = 0;
mFirst = true;
}
public Double next() {
if ( mFirst ) {
mFirst = false;
return 0.0;
} else {
mIndex++;
if ( mIndex < mClockWidth ) {
int clock = mClockStart + mIndex;
double t_sec = mVsq.getSecFromClock( clock );
if ( mSec0 <= t_sec && t_sec <= mSec0 + mFadeWidth ) {
mAmplitude *= (t_sec - mSec0) / mFadeWidth;
}
if ( mSec1 - mFadeWidth <= t_sec && t_sec <= mSec1 ) {
mAmplitude *= (mSec1 - t_sec) / mFadeWidth;
}
mPhase += mOmega * (t_sec - mSec);
double ret = mAmplitude * Math.Sin( mPhase );
float v = (float)(clock - mClockStart) / (float)mClockWidth;
int r = mRate.getValue( v, mStartRate );
int d = mDepth.getValue( v, mStartDepth );
mAmplitude = d * 2.5f / 127.0f / 2.0f;
mPeriod = VibratoPointIteratorBySec.getPeriodFromRate( r );
mOmega = (float)(2.0 * Math.PI / mPeriod);
mSec = t_sec;
return ret;
} else {
return 0.0;
}
}
}
public boolean hasNext() {
if ( mFirst ) {
return true;
} else {
return (mIndex < mClockWidth);
}
}
public void remove() {
}
public VibratoPointIteratorByClock( VsqFileEx vsq,
VibratoBPList rate,
int start_rate,
VibratoBPList depth,
int start_depth,
int clock_start,
int clock_width ) {
this.mVsq = vsq;
this.mRate = rate;
this.mStartRate = start_rate;
this.mDepth = depth;
this.mStartDepth = start_depth;
this.mClockStart = clock_start;
this.mClockWidth = clock_width;
rewind();
}
}
#if !JAVA
}
#endif
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