2 DIMENSIONAL SCALING

2 DIMENSIONAL SCALING

#include<conio.h>

#include<graphics.h>

#include<stdlib.h>

int px[10],py[10],tx[10],ty[10];

void disp1();

void disp2();

void scaling();

int i,n=0;

void main()

{

/*reqest auto detection */

   int gdriver = DETECT, gmode, errorcode;

   /* initialize graphics and local variables */

   initgraph(&gdriver, &gmode, "");

   /* read result of initialization */

   errorcode = graphresult();

   /* an error occurred */

   if (errorcode != grOk)

   {

      printf("Graphics error: %s\n", grapherrormsg(errorcode));

      printf("Press any key to halt:");

      getch();

      exit(1);

   }

   setcolor(getmaxcolor());

   printf("\n\n Enter the no of vertics:");

   scanf("%d",&n );

   printf("\n\nEnter the value for coordinate:");

   for(i=0;i<n;i++)

  {

            scanf("%d",&px[i]);

scanf("%d",&py[i]);

  }

  clrscr();

  disp1();

  scaling();

  clrscr();

  disp2();

  getch();

  closegraph();

}

void disp1()

{

for(i=0;i<n-1;i++)

line(px[i],py[i],px[i+1],py[i+1]);

line(px[n-1],py[n-1],px[0],py[0]);

getch();

}

void disp2()

{

for(i=0;i<n-1;i++)

line(tx[i],ty[i],tx[i+1],ty[i+1]);

line(tx[n-1],ty[n-1],tx[0],ty[0]);

getch();

}

void scaling()

{

int sx,sy;

printf("Enter the scaling vector:");

scanf("%d %d",&sx,&sy);

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

            {

                        tx[i]=px[i]*sx;

 ty[i]=py[i]*sy;

 }

 }

                                    2-DIMENSIONAL SCALING

OUTPUT:

Enter the number of vertices: 3

Enter the x and y coordinates : 100

150

150

150

150

100

Enter scale factors (2 values ) :

2

2