carfield.com.hk: Plot1DPanel.java

Sun Apr 16 16:00:00 GMT 2000

Plot1DPanel

/**
 * Title:        <p>
 * Description:  <p>
 * Copyright:    Copyright (c) <p>
 * Company:      <p>
 * @author
 * @version 1.0
 */
import javax.swing.*;
import java.awt.*;

public class Plot1DPanel extends java.awt.Canvas { // JPanel {

public Plot1DPanel(int num, float min, float max, float [] values) {
    super();
    this.num = num;
    this.min = min;
    this.max = max;
    this.values = values;
    colors = new Color[100];
    for (int i=0; i<100; i++) {
      float x = 1.0f - ((float)i) * 0.0096f;
      colors[i] = new Color(x, x, x);
    }
  }
  private int num;
  private float min, max;
  private float temp;
  private float [] values = null;
  private Color [] colors;
  //public void plot(float [] values) {
  //}
  public void paint(Graphics g) {
    if (values == null) return;
    int delta_width = this.getWidth() / num;
    int delta_height = this.getHeight() / num;
    for (int i=0; i<num; i++) {
      //System.out.println(this.toString() + ", values[" + i + "]=" + values[i]);
      temp = 100.0f * (values[i] - min) / (max - min);
      int ii = (int)temp;
      if (ii < 0) ii = 0;
      if (ii > 99) ii = 99;
      g.setColor(colors[ii]);
      g.fillRect(i * delta_width, 0, delta_width, delta_height);
    }
  }
}

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