自分の投稿に返信して申し訳ありませんが、プログラムを完全に変更しました。最初の投稿からコードを削除できるかどうかわかりません。ということで、新たに投稿しました。
アプリケーションを変更しましたが、配列を別のメソッドに入力する際にまだ問題があります。「Arrays.copyOf b = (a, a.length)」で配列をコピーし、配列を静的に変更しても問題は解決しません。OscilloscopeController クラスで setSignal() から getSignal() への配列を入力できません。
OscilloscopeController.java
import java.util.Arrays;
import java.util.Random;
public class OscilloscopeController {
private static int frameSize = (int) (44100 / 100F);
private int idx, numFramesToSkip = 10;
private static int[] toDraw = new int[frameSize];
private static int[] data = new int[frameSize];
public OscilloscopeController() {
for (int i = 0; i < frameSize; i++) {
toDraw[i] = 0;
data[i] = 0;
}
}
public void setSignal(int in) {
// Because the Model layer is off, I generate a test signal
Random randomGenerator = new Random();
int j = 0;
for (int i = 0; i < 44100; i++) {
int randomInt = randomGenerator.nextInt(32675 * 2) - (32675);
if (i % 4 == 0) {
j = randomInt;
}
in = j;
}
if (idx++ > frameSize * numFramesToSkip)
{
idx = 0;
}
else
{
if (idx < frameSize) {
data[idx] = in;
}
if (idx == frameSize)
{
// HERE IS PROBLEM. I'D LIKE THIS toDraw in getSignal()
toDraw = Arrays.copyOf(data, data.length);
}
}
}
public int[] getSignal() {
// IF UNCOMMENT BELOW WORKS FINE, OTHERWISE ZERO VALUES
/*
Random randomGenerator = new Random();
int j=0;
for (int i = 0; i < 440; i++) {
int randomInt = randomGenerator.nextInt(32675*2)-(32675);
if (i%4==0) j = randomInt;
toDraw[i]=j;
}
*/
for (int i = 0; i < frameSize; i++)
System.out.println("Controller.getSignal() = "+ toDraw[i]);
return toDraw;
}
}
MainPanelには main メソッドが含まれています。
import java.awt.*;
import javax.swing.*;
public class MainPanel extends JPanel {
public static void main(String args[]) throws Exception {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
JFrame frame = new JFrame();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.getContentPane().add(new MainPanel());
frame.pack();
frame.setVisible(true);
}
});
}
private final OscilloscopeView oscView = new OscilloscopeView();
private final OscilloscopeController oscController = new OscilloscopeController();
public MainPanel() {
setPreferredSize(new Dimension(400, 200));
// a lot of other components here
oscView.setData(oscController.getSignal());
add(oscView);
}
}
OscilloscopeView.java
import javax.swing.JFrame;
import javax.swing.JPanel;
public class OscilloscopeView extends JPanel {
private OscPlotter plotter = new OscPlotter(441);;
public OscilloscopeView()
{
setSize(320,210);
add(this.plotter);
}
public void setData(int[] data){
plotter.setData(data);
}
}
OscPlotter.java
import java.awt.Color;
import java.awt.Graphics;
import java.util.Arrays;
import javax.swing.JPanel;
public class OscPlotter extends JPanel{
private int width = 320;
private int height = 130;
private float widthC;
private float heightC;
private int sampleSize;
private int frameSize;
private int[] toDraw;
private float x,prevX;
public OscPlotter(int fSize){
setSize(width,height);
setPreferredSize(this.getSize());
this.frameSize = fSize;
this.toDraw = new int[441];
sampleSize = 1;
}
public void setData(int[] data){
toDraw = Arrays.copyOf(data, data.length);
repaint();
}
@Override
public void paintComponent(Graphics g){
widthC = ((float)width/frameSize);
sampleSize = (16 == 16 ? 65536 : 256);
heightC = (((float)height-15)/sampleSize);
g.setColor(Color.black);
g.fillRect(0,0,width,height);
g.setColor(Color.gray);
for (int i = 1; i<height;i+=height/8)
g.drawLine(0,i,width,i);
for (int i = 1; i<width;i+=width/8)
g.drawLine(i,0,i,height);
g.setColor(Color.lightGray);
g.drawLine(0,(int)(height/2),width,(int)((height/2)));
g.setColor(Color.green);
x = 0;
for (int i = 0; i< frameSize-1;i++)
{
prevX = x;
x +=widthC;
// draw the read waveform data
g.drawLine ((int)prevX,(int)((height/2+toDraw[i]*heightC)),(int)x,(int)((height/2+toDraw[i+1]*heightC)));
}
}
}