31. ROTATION (2-D TRANSFORMATION)

Code:

import java.math.*;

import java.util.*;

import java.awt.*;

import java.applet.*;

public class Rotation extends Applet

{

public void paint(Graphics g)

{

int i,j,k;

double r=30*3.14/180;

int x1,y1,x2,y2,x3,y3,x11,y11,x22,y22,x33,y33;

x1=150;

y1=200;

x2=250;

y2=250;

x3=230;

y3=270;

g.drawLine(x1,y1,x2,y2);

g.drawLine(x2,y2,x3,y3);

g.drawLine(x1,y1,x3,y3);

double p1[][]=new double[3][3];

int p[][]=new int[3][3];

double t[][]=new double[3][3];

t[0][0]=t[1][1]=Math.cos(r);

t[0][1]=-(Math.sin(r));

t[1][0]=Math.sin(r);

t[2][2]=1;

t[0][2]=t[1][2]=t[2][0]=t[2][1]=0;

p[0][0]=x1;

p[0][1]=x2;

p[0][2]=x3;

p[1][0]=y1;

p[1][1]=y2;

p[1][2]=y3;

p[2][0]=p[2][1]=p[2][2]=1;

for(i=0;i<3;i++)

{

for(j=0;j<3;j++)

{

p1[i][j]=0;

for(k=0;k<3;k++)

{

p1[i][j]=p1[i][j]+t[i][k]*p[k][j];

}

}

System.out.println();

}

x11=(int)p1[0][0];

x22=(int)p1[0][1];

x33=(int)p1[0][2];

y11=(int)p1[1][0];

y22=(int)p1[1][1];

y33=(int)p1[1][2];

g.drawLine(x11,y11,x22,y22);

g.drawLine(x22,y22,x33,y33);

g.drawLine(x11,y11,x33,y33);

}

}

/*<applet code="Rotation.class" width="800" height="800">

 </applet>*/

OUTPUT:

Need the code??

Download Link= https://www.dropbox.com/s/dcu0ckbhj9z984w/Rotation%202D-final.docx