第９回　カオスの音楽

import jm.JMC;

import jm.util.*;

import jm.music.data.*;

import jm.midi.*;

import java.awt.*;

import java.awt.event.*;

import java.awt.event.ActionListener;

import java.awt.event.ActionEvent;

import java.applet.Applet;

/*<applet code = "Chaos_Applet3"  archive="./jmusic.jar"  width=500 height=300></applet>*/

public final class Chaos_Applet3 extends Applet implements JMC, ActionListener {

private Button playBtn; // 後から付加

Score score = new Score("JMDemo - Chaos", 300);

Part inst = new Part("Piano", PIANO, 0);

Phrase phr = new Phrase(0.0);

double xold = 0.0; // initial x position

double x, y; // temp variables

double yold = 0.0; // initial y position

double a = 1.4; // first constant. For oscillation try 1.04

double b = 0.3; //second constant. For oscillation try 0.3

public static void main(String[] args){

      Applet applet = new Chaos_Applet3();

      Frame frame = new Frame("Chaos_Applet3");

      // frame.add("Center", applet);

      frame.add(applet);

// ウインドウを閉じた時にアプリケーションが終了するための仕掛け。

frame.addWindowListener(new WindowAdapter() {

public void windowClosing(WindowEvent e) {

System.exit(0);

}

});

frame.setSize(600,500);

frame.setVisible(true);

// frame.show();

                           applet.init();

                  applet.start();

}

public void init() {

setBackground(Color.orange);

playBtn = new Button("Play");

playBtn.addActionListener(this); // addActionListenerメソッドの引数には、

// このイベントを処理するリスナーのクラスを指定

this.add(playBtn);

}

// playBtnが押された時に、compose()メソッドを実行する。

public void actionPerformed( ActionEvent e ) {

if ( e.getSource() == playBtn) {

compose(); 

}

}

/**

* Create a new score.

*/

private void compose() {

inst.addPhrase(phr);

score.addPart(inst);

// Write.midi(score, "Chaos_Applet3.mid");

View.notate(score); // 後から付加 ボタンを押すとスコアが表示される

}

public void paint(Graphics g) {

g.setColor(Color.blue);

// create a phrase of chaotically pitched quavers over a limited MIDI range.

for(short i=0;i<100;i++){

x = 1 + yold - a * xold * xold;

y = b * xold;

// map the x value across a few octaves

Note note = new Note((int)(x*36)+48, Q);

phr.addNote(note);

Dimension d = getSize();

g.fillRect((int)(100*x+d.width/2),(int)(100*y+d.height/2),3,3);

xold = x;

yold = y;

}

}

}

第１０回　カオスの音楽２　

例題

import jm.JMC;

import jm.util.*;

import jm.music.data.*;

import jm.midi.*;

import java.awt.*;

import java.awt.event.*;

import java.awt.event.ActionListener;

import java.awt.event.ActionEvent;

import java.applet.Applet;

/*<applet code = "ChaosAttractor1"  archive="./jmusic.jar"  width=500 height=700></applet>*/

public final class ChaosAttractor1 extends Applet implements JMC, ActionListener {

private Button playBtn; // 後から付加

Score score = new Score("JMDemo - Chaos", 300);

Part inst = new Part("Piano", PIANO, 0);

Phrase phr = new Phrase(0.0);

double xold = 0.1; // initial x position

double x, y; // temp variables

double yold = 0.1; // initial y position

double a = 0.6; // first constant. For oscillation try 1.04

double b = 4.5; //second constant. For oscillation try 0.3

public static void main(String[] args){

      Applet applet = new ChaosAttractor1();

      Frame frame = new Frame("ChaosAttractor1");

      frame.add("Center", applet);

frame.addWindowListener(new WindowAdapter() {

public void windowClosing(WindowEvent e) {

System.exit(0);

}

});

frame.setSize(600,1000);

frame.setVisible(true);

// frame.show();

                           applet.init();

                  applet.start();

}

public void init() {

setBackground(Color.orange);

playBtn = new Button("Play");

playBtn.addActionListener(this);

this.add(playBtn);

}

public void actionPerformed( ActionEvent e ) {

if ( e.getSource() == playBtn) {

compose(); 

}

}

/**

* Create a new score.

*/

private void compose() {

inst.addPhrase(phr);

score.addPart(inst);

// Write.midi(score, "ChaosAttractor1.mid");

View.notate(score); // 後から付加 ボタンを押すとスコアが表示される

}

public void paint(Graphics g) {

g.setColor(Color.blue);

// create a phrase of chaotically pitched quavers over a limited MIDI range.

for(short i=0;i<500;i++){

// x = a*xold - xold*yold;

// y = b*yold + xold*xold;

x = yold + a*xold +b/(1+xold*xold) ;

y = -xold;

// map the x value across a few octaves

Note note = new Note((int)(x)+60, Q);

System.out.println(" x= " +x);

System.out.println(" y= " +y);

System.out.println(" note= " +note);

phr.addNote(note);

Dimension d = getSize();

g.fillRect((int)(10*x+d.width/2),(int)(10*y+d.height/2),3,3);

xold = x;

yold = y;

}

}

}

*********************************************************************************************************************************

import jm.JMC;

import jm.util.*;

import jm.music.data.*;

import jm.midi.*;

import java.awt.*;

import java.awt.event.*;

import java.awt.event.ActionListener;

import java.awt.event.ActionEvent;

import java.applet.Applet;

/*<applet code = "ChaosAttractor3"  archive="./jmusic.jar"  width=500 height=700></applet>*/

public final class ChaosAttractor3 extends Applet implements JMC, ActionListener {

private Button playBtn; // 後から付加

Score score = new Score("JMDemo - Chaos", 300);

Part inst = new Part("Piano", PIANO, 0);

Phrase phr = new Phrase(0.0);

double xold = 0.1; // initial x position

double x, y; // temp variables

double yold = 0.1; // initial y position

double a = -0.5; // first constant. For oscillation try 1.04

double b = 0.9; //second constant. For oscillation try 0.3

double c = 10.0; //second constant. For oscillation try 0.3

public static void main(String[] args){

      Applet applet = new ChaosAttractor3();

      Frame frame = new Frame("ChaosAttractor3");

      frame.add("Center", applet);

frame.addWindowListener(new WindowAdapter() {

public void windowClosing(WindowEvent e) {

System.exit(0);

}

});

frame.setSize(600,1000);

frame.setVisible(true);

// frame.show();

                           applet.init();

                  applet.start();

}

public void init() {

setBackground(Color.orange);

playBtn = new Button("Play");

playBtn.addActionListener(this);

this.add(playBtn);

}

public void actionPerformed( ActionEvent e ) {

if ( e.getSource() == playBtn) {

compose(); 

}

}

/**

* Create a new score.

*/

private void compose() {

inst.addPhrase(phr);

score.addPart(inst);

// Write.midi(score, "ChaosAttractor3.mid");

View.notate(score); // 後から付加 ボタンを押すとスコアが表示される

}

public void paint(Graphics g) {

g.setColor(Color.blue);

// create a phrase of chaotically pitched quavers over a limited MIDI range.

for(short i=0;i<500;i++){

// x = a*xold - xold*yold;

// y = b*yold + xold*xold;

// x = yold + a*xold +b/(1+xold*xold) ;

// y = -xold;

x =a*xold +  b*yold  +c/(1+xold*xold) ;

y = -xold;

// map the x value across a few octaves

Note note = new Note((int)(x*2)+60, Q);

System.out.println(" x= " +x);

System.out.println(" y= " +y);

System.out.println(" note= " +note);

phr.addNote(note);

Dimension d = getSize();

g.fillRect((int)(20*x+d.width/2),(int)(20*y+d.height/2),3,3);

xold = x;

yold = y;

}

}

}

*********************************************************************************************************************************

import jm.JMC;

import jm.util.*;

import jm.music.data.*;

import jm.midi.*;

import java.awt.*;

import java.applet.Applet;

import java.awt.event.*;

/*<applet code = "Chaos_test"  archive="./jmusic.jar"  archive="./inst.jar"  width=500 height=300></applet>*/

public final class Chaos_test extends Applet implements JMC{

Score score = new Score("JMDemo - Chaos", 300);

Part inst = new Part("Piano", PIANO, 0);

Phrase phr = new Phrase(0.0);

double xold; // initial x position

double w1, w2, x, y, xmax, ymax, xmin, ymin; // temp variables

double yold; // initial y position

double k; //-1と１の間の数

public static void main(String[] args){

      Applet applet = new Chaos_test();

      Frame frame = new Frame("Chaos_test");

      frame.add("Center", applet);

frame.addWindowListener(new WindowAdapter() {

public void windowClosing(WindowEvent e) {

System.exit(0);

}

});

frame.setSize(600,500);

frame.setVisible(true);

                           applet.init();

                  applet.start();

}

public void init() {

setBackground(Color.lightGray);

xold = 0.1; // initial x position

yold = 0.1; // initial y position

k = -0.85;

}

public void start() {

// System.out.println(" start() is called.");

inst.addPhrase(phr);

score.addPart(inst);

// Write.midi(score, "Chaos_AppletTest2");

View.notate(score); // 後から付加

}

public void paint(Graphics g) {

g.setColor(Color.blue);

xmax = 0.0;

ymax = 0.0;

xmin = 0.0;

ymin = 0.0;

// create a phrase of chaotically pitched quavers over a limited MIDI range.

for(short i=0;i<1000;i++){

// 

w1 = k*xold+2*(1-k)*xold*xold/(1+xold*xold) ;

x = yold+ 0.008*(1-0.05*yold*yold)*yold+ w1;

w2 = k*x+2*(1-k)*x*x/(1+x*x) ;

y = -xold +w2;

if(x>xmax) xmax = x;

if(y>ymax) ymax = y;

if(x<xmin) xmin = x;

if(y<ymin) ymin = y;

System.out.println(" x+60= "+ (x+60));

System.out.println(" y+60= "+ (y+60));

// map the x value across a few octaves

Note note = new Note((int)(x+60), Q);

phr.addNote(note);

Dimension d = getSize();

// g.fillRect((int)(80*x+d.width/2),(int)(80*y+d.height/2),3,3);

g.fillRect((int)(10*x+d.width/2),(int)(10*y+d.height/2),3,3);

xold = x;

yold = y;

}

System.out.println(" xmax= "+ xmax);

System.out.println(" ymax= "+ ymax);

System.out.println(" xmin= "+ xmin);

System.out.println(" ymin= "+ ymin);

}

}