📄 mainwindow.java.bak
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import java.awt.*;
import java.awt.event.*;
import java.awt.geom.*;
import java.util.*;
import javax.swing.*;
import java.text.*;
public class mainWindow
{
public static void main(String[] args)
{
JFrame frame2=new BsplineCurveFrame();
MyWindowListener l = new MyWindowListener();
frame2.addWindowListener(l);
Text t=new Text();
t.init();
frame2.getContentPane().add(t,BorderLayout.SOUTH);
frame2.setVisible(true);
}
}
class BsplineCurveFrame extends JFrame
{
JLabel jl1,jl2,jl3,jl4,jl5;//,jl6
static JTextField jf1,jf2,jf3,jf4,jf5,jf6,jf7,jf8,jf9,jf10;//,jf11,jf12
public BsplineCurveFrame()
{
setTitle("B样条曲线绘图");
setSize(DEFAULT_WIDTH, DEFAULT_HEIGHT);
final ShapePanel1 panel = new ShapePanel1();
add(panel, BorderLayout.CENTER);
final JPanel panel2= new JPanel();
jl1=new JLabel("P1",JLabel.RIGHT);
jl2=new JLabel("P2",JLabel.RIGHT);
jl3=new JLabel("P3",JLabel.RIGHT);
jl4=new JLabel("P4",JLabel.RIGHT);
jl5=new JLabel("P5",JLabel.RIGHT);
jf1=new JTextField(10);
jf2=new JTextField(10);
jf3=new JTextField(10);
jf4=new JTextField(10);
jf5=new JTextField(10);
jf6=new JTextField(10);
jf7=new JTextField(10);
jf8=new JTextField(10);
jf9=new JTextField(10);
jf10=new JTextField(10);
//jf11=new JTextField(10);
// jf12=new JTextField(10);
Box box1=Box.createHorizontalBox();
box1.add(jl1);
box1.add(jf1);
box1.add(Box.createHorizontalStrut(15));
box1.add(jf2);
Box box2=Box.createHorizontalBox();
box2.add(jl2);
box2.add(jf3);
box2.add(Box.createHorizontalStrut(15));
box2.add(jf4);
Box box3=Box.createHorizontalBox();
box3.add(jl3);
box3.add(jf5);
box3.add(Box.createHorizontalStrut(15));
box3.add(jf6);
Box box4=Box.createHorizontalBox();
box4.add(jl4);
box4.add(jf7);
box4.add(Box.createHorizontalStrut(15));
box4.add(jf8);
Box box5=Box.createHorizontalBox();
box5.add(jl5);
box5.add(jf9);
box5.add(Box.createHorizontalStrut(15));
box5.add(jf10);
//Box box6=Box.createHorizontalBox();
//box6.add(jl6);
//box6.add(jf11);
//box6.add(Box.createHorizontalStrut(15));
// box6.add(jf12);
Box boxH=Box.createHorizontalBox();
boxH.add(box1);
boxH.add(Box.createHorizontalStrut(20));
boxH.add(box2);
Box boxH1=Box.createHorizontalBox();
boxH1.add(box3);
boxH1.add(Box.createHorizontalStrut(20));
boxH1.add(box4);
Box boxH2=Box.createHorizontalBox();
boxH2.add(box5);
boxH2.add(Box.createHorizontalStrut(250));
//boxH2.add(box6);
Box boxv=Box.createVerticalBox();
boxv.add(boxH);
boxv.add(boxH1);
boxv.add(boxH2);
panel2.add(boxv);
final JButton button1 = new JButton("绘 图");
final JPanel panel3= new JPanel();
panel3.add(button1,BorderLayout.CENTER);
button1.addActionListener(new
ActionListener()
{
public void actionPerformed(ActionEvent event)
{
s[0][0]=Double.parseDouble(jf1.getText().trim());
s[0][1]=Double.parseDouble(jf3.getText().trim());
s[0][2]=Double.parseDouble(jf5.getText().trim());
s[0][3]=Double.parseDouble(jf7.getText().trim());
s[0][4]=Double.parseDouble(jf9.getText().trim());
s[1][0]=Double.parseDouble(jf2.getText().trim());
s[1][1]=Double.parseDouble(jf4.getText().trim());
s[1][2]=Double.parseDouble(jf6.getText().trim());
s[1][3]=Double.parseDouble(jf8.getText().trim());
s[1][4]=Double.parseDouble(jf10.getText().trim());
ShapeMaker1 shapeMaker = new PolygonMaker1();
panel.setShapeMaker(shapeMaker);
}
});
// button2.addActionListener(new ActionListener)
add("North",new JPanelBox(panel2,"B样条曲线"));
add(panel3, BorderLayout.SOUTH);
}
private static final int DEFAULT_WIDTH = 700;
private static final int DEFAULT_HEIGHT = 700;
static final double[][] s=new double[2][5];
}
class ShapePanel1 extends JPanel
{
public ShapePanel1()
{
addMouseListener(new
MouseAdapter()
{
public void mousePressed(MouseEvent event)
{
Point p = event.getPoint();
for (int i = 0; i < points.length; i++)
{
double x = points[i].getX() - SIZE / 2;
double y = points[i].getY() - SIZE / 2;
Rectangle2D r = new Rectangle2D.Double(x, y, SIZE, SIZE);
if (r.contains(p))
{
current = i;
return;
}
}
}
public void mouseReleased(MouseEvent event)
{
current = -1;
}
});
addMouseMotionListener(new
MouseMotionAdapter()
{
public void mouseDragged(MouseEvent event)
{
if (current == -1) return;
points[current] = event.getPoint();
repaint();
double[][] tf= new double[2][5];
DecimalFormat df = new DecimalFormat("###.00");
for(int j=0;j<5;j++)
{
tf[0][j]=50*ShapePanel1.points[j].getX()/getWidth()-35;
tf[1][j]=50*(getHeight()-ShapePanel1.points[j].getY())/getHeight()-35;
}
BsplineCurveFrame.jf1.setText(df.format(tf[0][0]));
BsplineCurveFrame.jf2.setText(df.format(tf[1][0]));
BsplineCurveFrame.jf3.setText(df.format(tf[0][1]));
BsplineCurveFrame.jf4.setText(df.format(tf[1][1]));
BsplineCurveFrame.jf5.setText(df.format(tf[0][2]));
BsplineCurveFrame.jf6.setText(df.format(tf[1][2]));
BsplineCurveFrame.jf7.setText(df.format(tf[0][3]));
BsplineCurveFrame.jf8.setText(df.format(tf[1][3]));
BsplineCurveFrame.jf9.setText(df.format(tf[0][4]));
BsplineCurveFrame.jf10.setText(df.format(tf[1][4]));
}
});
current = -1;
}
public void setShapeMaker(ShapeMaker1 aShapeMaker)
{
shapeMaker = aShapeMaker;
int n = shapeMaker.getPointCount();
points = new Point2D[n];
double[][] a=BsplineCurveFrame.s;
for(int i=0;i<n;i++)
{
double x = getWidth()/50*(a[0][i]+35);
double y = getHeight()-getHeight()/50*(a[1][i]+35);
points[i] = new Point2D.Double(x, y);
}
repaint();
}
public void paintComponent(Graphics g)
{
super.paintComponent(g);
if (points == null) return;
Graphics2D g2 = (Graphics2D) g;
g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,RenderingHints.VALUE_ANTIALIAS_ON);
BasicStroke bs= new BasicStroke(1.0f,BasicStroke.CAP_SQUARE,
BasicStroke.JOIN_MITER);
g2.setStroke(bs);
for (int j = 0; j < points.length; j++)
{ double x = points[j].getX() - SIZE / 2;
double y = points[j].getY() - SIZE / 2;
g2.setColor(Color.red);
g2.fill(new Rectangle2D.Double(x, y, SIZE, SIZE));
}
g2.draw(shapeMaker.makeShape(points));
double[] x1=new double[1001];
double[] y1=new double[1001];
double[] w1=new double[2];
for(int i=0;i<1000;i++)
{
double[][] d=new double[2][5];
for(int j=0;j<points.length;j++)
{
d[0][j]=points[j].getX();
d[1][j]=points[j].getY();
}
double u=0.001*i+0.001;
double[] u1=H.Hartleyknot(d,5,3);
double[] t=H.HartleyT(u1,5,3);
int[] r={4,1,4};
w1=BNote(t,r,u,d);
x1[i]=w1[0];
y1[i]=w1[1];
}
for(int i=0;i<=998;i++)
{
line2=new Line2D.Double(x1[i],y1[i],x1[i+1],y1[i+1]);
g2.setColor(Color.blue);
g2.draw(line2);
}
}
public double[] BNote(double[] t,int[] r,double u,double[][] d)
{
double x[]=new double[2];
double[][] c=d;
int i=0,k=3;
for(int j=0;j<8;j++)
{
if(u<=knotValue(j+1,t,r)&&u>knotValue(j,t,r))
{
i=j;
break;
}
}
for(int q=1;q<=k;q++)
{
for(int j=i-k;j<=i-q;j++)
{
double alfa=knotValue(j+k+1,t,r)-knotValue(j+q,t,r);
if(alfa==0)alfa=0;
else
alfa=(u-knotValue(j+q,t,r))/alfa;
c[0][j]=(1-alfa)*c[0][j]+alfa*c[0][j+1];
c[1][j]=(1-alfa)*c[1][j]+alfa*c[1][j+1];
}
}
for(int m=0;m<2;m++)
{
x[m]=c[m][i-k];
}
return x;
}
public double knotValue(int k,double t[],int r[])
{
int j=1;
double temp=0;
for(int i=0;i<r.length;i++)
{
temp=temp+r[i];
if(temp>k)
{
j=i;
break;
}
}
return t[j];
}
public static Point2D[] points;
private static int SIZE = 10;
private int current;
private ShapeMaker1 shapeMaker;
private Line2D line2;
private HartleyJ H=new HartleyJ();
}
abstract class ShapeMaker1
{
public ShapeMaker1(int aPointCount)
{
pointCount = aPointCount;
}
public int getPointCount()
{
return pointCount;
}
public abstract Shape makeShape(Point2D[] p);
public String toString()
{
return getClass().getName();
}
private int pointCount;
}
class PolygonMaker1 extends ShapeMaker1
{
public PolygonMaker1() { super(5); }
public Shape makeShape(Point2D[] p)
{
GeneralPath s = new GeneralPath();
s.moveTo((float) p[0].getX(), (float) p[0].getY());
for (int i = 1; i < p.length; i++)
s.lineTo((float) p[i].getX(), (float) p[i].getY());
return s;
}
}
class MyWindowListener extends WindowAdapter
{
public void windowClosing(WindowEvent e)
{
System.exit(0);
}
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