package sa;
/* DataWindow.java */
import java.awt.Color;
import java.awt.Graphics;
import java.awt.Point;
import javax.swing.JFrame;
import java.text.DateFormat;
import java.util.Date;
import java.util.Random;
/**
* 动态绘制数据曲线
*http://bookshadow.com/weblog/2014/05/16/java-swing-line-chart/
* @author tyhj_sf@163.com
*/
public class DynamicDataWindow extends JFrame {
private static final long serialVersionUID = 3158195564992240333L;
private static int MAX_SAMPLES = 100000;
private double yMax = 0.0;
private double yMin = Double.MAX_VALUE;
private int index = 0;
private long[] time = new long[MAX_SAMPLES];
private double[] val = new double[MAX_SAMPLES];
private static String X_Coordinate_Name="时间（s）";
private static String Y_Coordinate_Name="数据";
// Variables declaration - do not modify//GEN-BEGIN:variables
private javax.swing.JPanel dataPanel;
private javax.swing.JTextArea dataTextArea;
private javax.swing.JScrollPane jScrollPane1;
// End of variables declaration//GEN-END:variables
DateFormat fmt = DateFormat.getDateTimeInstance();
private int left;
private int top;
private int right;
private int bottom;
private int y0; //y轴起点位置
private int yn;//y轴末端位置
private int x0;//x轴起点位置
private int xn;//x轴末端位置
private double eqdiviY;//设置Y等分量
private double vscale;
private int tickX;//标度间隔像素
private int timescale;//以秒为基准的时间倍率
private double timeMargin;//标度间隔
private double tscale;// 每一个像素代表的毫秒数
private int temp;//
/** Creates new form DataWindow */
public DynamicDataWindow() {
initComponents();
initDisplay();
}
public DynamicDataWindow(String ieee) {
initComponents();
setTitle(ieee);
initDisplay();
}
private void initDisplay() {
left = dataPanel.getX() + 10; // get size of pane
top = dataPanel.getY() + 30;
right = left + dataPanel.getWidth() - 20;
bottom = top + dataPanel.getHeight() - 20;
y0 = bottom - 40; // y轴起点位置
yn = top + 40;// y轴末端位置
x0 = left + 50;// x轴起点位置
xn = right; // x轴末端位置
eqdiviY = 125.0;// 设置Y等分量
vscale = (yn - y0) / eqdiviY;
tickX = 25;// 标度间隔像素
timescale = 1;
timeMargin = timescale*1000.0;// 标度间隔为1秒
tscale = 1.0 / (timeMargin / tickX); // 每一个像素代表的毫秒数
}
//设置y轴标度范围
public void setyMaxMin(double y) {
if (y>this.yMax) {
this.yMax = y*1.1;
}
if (y<this.yMin) {
this.yMin = y*0.9;
}
}
//向坐标系添加数据并刷新曲线
public void addData(long t, double v) {
setyMaxMin(v);
time[index] = t;
val[index++] = v;
dataTextArea.append(fmt.format(new Date(t)) + " value = " + v + "\n");
dataTextArea.setCaretPosition(dataTextArea.getText().length());
repaint();
}
// Graph the sensor values in the dataPanel JPanel
@Override
public void paint(Graphics g) {
super.paint(g);
left = dataPanel.getX() + 10; // get size of pane
top = dataPanel.getY() + 30;
right = left + dataPanel.getWidth() - 20;
bottom = top + dataPanel.getHeight() - 20;
y0 = bottom - 40; // y轴起点位置
yn = top + 40;// y轴末端位置
x0 = left + 50;// x轴起点位置
xn = right; // x轴末端位置
eqdiviY = 125.0;// 设置Y等分量
vscale = (yn - y0) / eqdiviY;
// tickX = 25;// 标度间隔像素
timeMargin = timescale*1000;// 标度间隔为1秒
tscale = 1.0 / (timeMargin / tickX); // 每一个像素代表的毫秒数
// 绘制x轴，为时间轴
g.setColor(Color.WHITE);
g.drawLine(x0, yn, x0, y0);//绘制无标度的Y轴
g.drawLine(x0, y0, xn, y0);//绘制无标度的X轴
for (int xt = x0 + tickX; xt < xn; xt += tickX) {
g.drawLine(xt, y0 + 5, xt, y0 - 5);//绘制标度
int time = (xt - x0) / tickX;//计算每个标度的时间
g.drawString(Integer.toString(timescale*time), xt - (time < 10 ? 3 : 7) , y0 + 20);//绘制每个标度对应数值
if (xt >= xn-tickX) {
g.drawString(X_Coordinate_Name, xt - 25 , y0 + 40);//绘制轴名
}
}
// 绘制y轴，为数据轴
g.setColor(Color.WHITE);
double tickY=20;//标度间隔
for (double vt = 0; vt <= eqdiviY; vt += tickY) {
int v = y0 + (int)(vt * vscale);//
g.drawLine(x0 - 5, v, x0 + xn, v);//绘制标度
g.drawString(Float.toString((float)(yMin+(vt/eqdiviY)*(yMax-yMin))), x0 - 38 , v + 5);//绘制每个标度对应数值
if (vt >= 120) {
g.drawString(Y_Coordinate_Name, x0 - 30 , v-15);//绘制轴名
}
}
// 绘制数据曲线
g.setColor(Color.RED);
int xp = -1;//前一个坐标值的x;
int vp = -1;//前一个坐标值的y;
for (int i = 0; i < index; i++) {
int x = x0 + (int)((time[i] - time[0]) * tscale);
int v = y0 + (int)(((val[i]-yMin)/(yMax-yMin)) *(yn-y0));
if (xp > 0) {//时间不为负
g.drawLine(xp, vp, x, v);//绘制当前折线
}
xp = x;
vp = v;
}
g.drawString(Double.toString(val[(index-1)<0? 0 : (index-1)]),xp-5 , vp-5);//标记最后一个数据值
//调整x轴标度间距
if (xp>=xn) {
timescale*=2;
temp=timescale/100;
while(temp>0){
tickX+=9;
temp/=10;
}
}
}
public static DynamicDataWindow ddWindow;
public static void main (String args[]) {
// java.awt.EventQueue.invokeLater(new Runnable() {
// public void run() {
//
// }
// });
ddWindow=new DynamicDataWindow("遗传算法最优化求解过程");
ddWindow.setVisible(true);
new Thread(){
@Override
public void run() {
super.run();
double t=0;
while (true) {
long millis=System.currentTimeMillis();
Date date=new Date(millis);
// double t=((new Random().nextLong()%10)-5)/10.0;
t+=0.05;
t=(t<2.0)? t : 0;
double y=Math.sin(Math.PI*t)+10;
ddWindow.addData(millis, y);
try {
Thread.sleep(200L);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
}.run();
}
/** This method is called from within the constructor to
* initialize the form.
* WARNING: Do NOT modify this code. The content of this method is
* always regenerated by the Form Editor.
*/
@SuppressWarnings("unchecked")
// //GEN-BEGIN:initComponents
private void initComponents() {
dataPanel = new javax.swing.JPanel();
// coordinatePanel = new javax.swing.JPanel();
jScrollPane1 = new javax.swing.JScrollPane();
dataTextArea = new javax.swing.JTextArea();
dataPanel.setBackground(new java.awt.Color(0, 0, 0, 220));
dataPanel.setMinimumSize(new java.awt.Dimension(400, 250));
dataPanel.setPreferredSize(new java.awt.Dimension(800, 500));
getContentPane().add(dataPanel, java.awt.BorderLayout.CENTER);
jScrollPane1.setVerticalScrollBarPolicy(javax.swing.ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS);
jScrollPane1.setMinimumSize(new java.awt.Dimension(400, 100));
jScrollPane1.setPreferredSize(new java.awt.Dimension(400, 100));
dataTextArea.setColumns(20);
dataTextArea.setEditable(false);
dataTextArea.setRows(4);
jScrollPane1.setViewportView(dataTextArea);
getContentPane().add(jScrollPane1, java.awt.BorderLayout.SOUTH);
pack();
}// //GEN-END
