?? graphpanel.java
字號:
/** * Title: <p> * Description: <p> * Copyright: Copyright (c) <p> * Company: <p> * @author * @version 1.0 */import javax.swing.*;import java.awt.*;public class GraphPanel extends java.awt.Canvas { // JPanel { public GraphPanel(float [] data) { super(); this.data = data; } Color black = new Color(0, 0, 0); float [] data; public void paint(Graphics g) { if (data == null) return; int width = this.getWidth(); int height = this.getHeight(); System.out.println("height="+height); float min = 99999999.9f; float max = -min; int maxindex = 0; float maxval = 0.0f; for (int i=0; i<data.length; i++) { if (min > data[i]) min = data[i]; if (max < data[i]) { max = data[i]; maxindex = i; maxval = max; } } System.out.println("min=" + min +", max=" + max + ", max index="+maxindex + ", max val="+maxval); g.setColor(black); for (int i=0; i<data.length - 1; i++) { float y1 = height - 5 - 0.95f *height * ((data[i] - min) / (max - min)); float y2 = height - 5 - 0.95f *height * ((data[i+1] - min) / (max - min)); //System.out.println("data["+i+"]="+data[i]+", y1="+y1+", y2="+y2); g.drawLine(i+20, (int)y1, i+21, (int)y2); } float yzero = height - 5 - 0.95f *height * ((0.0f - min) / (max - min)); g.drawLine(20, (int)yzero, data.length + 19, (int)yzero); }}
?? 快捷鍵說明
復制代碼
Ctrl + C
搜索代碼
Ctrl + F
全屏模式
F11
切換主題
Ctrl + Shift + D
顯示快捷鍵
?
增大字號
Ctrl + =
減小字號
Ctrl + -