準備ｐｐ - プログラム倉庫

import java.awt.*;
import java.awt.geom.*;
import java.awt.event.*;
import javax.swing.*;
import java.awt.image.BufferedImage;
import java.io.File;
import javax.imageio.ImageIO;
import java.io.IOException;
import java.io.*;

public class pro extends JFrame{

double c[][]=new double[6][6];
double y1[][]=new double[6][6];
double y2[][]=new double[6][6];
int s1,s2;

public static void main(String[] args){

   pro test = new pro(); 

   test.addWindowListener(new WindowAdapter(){ 
     public void windowClosing(WindowEvent e){System.exit(0);} 
   }); 

   test.setBounds( 0, 0, 700, 700); 
   test.setVisible(true); 
 } 

pro(){

try{
BufferedReader br =

        new BufferedReader(new FileReader("tax.[[txt]]")); 

      String str; 

String x[]=new String[5];
for(int i=0; i<25; i++){
str = br.readLine();
x=str.split(",");
s1=Integer.valueOf(x[0]);
s2=Integer.valueOf(x[1]);
c[s1][s2]=Double.valueOf(x[2]);
y1[s1][s2]=Double.valueOf(x[3]);
y2[s1][s2]=Double.valueOf(x[4]);
}
br.close();
}
catch(IOException e){System.out.println("入出力エラーです。");}

}

public void paint(Graphics g){
double x,y,z;
int px,py;

   Graphics2D g2 = (Graphics2D)g; 

   BufferedImage readImage = null; 
    

   if (readImage == null){ 
     readImage = new BufferedImage(getWidth(), getHeight(), 
       BufferedImage.TYPE_INT_BGR); 
   } 

   Graphics2D off = readImage.createGraphics(); 

   off.setRenderingHint(RenderingHints.KEY_ANTIALIASING, 
   RenderingHints.VALUE_ANTIALIAS_ON); 

BasicStroke wideStroke = new BasicStroke(2.0f);

   off.setStroke(wideStroke); 

off.setPaint(Color.blue);

x=0;
y=0;
z=500;
px=pointx(x,y,z);
py=pointy(x,y,z);
off.drawLine(100,600,100+px,600-py);

x=500;
y=0;
z=0;
px=pointx(x,y,z);
py=pointy(x,y,z);
off.drawLine(100,600,100+px,600-py);

x=0;
y=500;
z=0;
px=pointx(x,y,z);
py=pointy(x,y,z);
off.drawLine(100,600,100+px,600-py);

   if (readImage != null){g2.drawImage(readImage,0,0, this);} 

   try { 
     boolean result = 
      ImageIO.[[write]](readImage, "jpg", new File("sam.jpg")); 
   } catch (Exception e) { 
       e.printStackTrace(); 
   } 
 } 

public static int pointy(double x,double y,double z){
int p2;
double theta,phi;
theta=-0.222222*Math.PI;
phi=0.333333*Math.PI;
p2=(int)(-Math.cos(theta)*Math.cos(phi)*x-Math.sin(theta)*Math.cos(phi)*y+Math.sin(phi)*z);
return p2;
}

public static int pointx(double x,double y,double z){
int p1;
double theta;
theta=-0.222222*Math.PI;
p1=(int)(-Math.sin(theta)*x+Math.cos(theta)*y);
return p1;
}

}