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Computer Graphics Source Codes & Study Notes-Free Download


Computer Graphics Lab Codings- BRESENHAMíS CIRCLE DRAWING ALGORITHM

#include "stdio.h"

include "conio.h"

include "math.h"

include "graphics.h"

main()

{

int gd=DETECT,gm;

int xcenter,ycenter,radius;

int p,x,y;

initgraph(&gd,&gm,"c:\\tc\\bgi");

x=0;

printf("Enter The Radius Value:\n");

scanf("%d",&radius);

y=radius;

printf("Enter The xcenter and ycenter Values:\n");

scanf("%d%d",&xcenter,&ycenter);

plotpoints(xcenter,ycenter,x,y);

p=1-radius;

while(x<y)

{

if(p<0)

x=x+1;

else

{

x=x+1;

y=y-1;

}

if(p<0)

p=p+2*x+1;

else

p=p+2*(x-y)+1;

plotpoints(xcenter,ycenter,x,y);

}

getch();

return(0);

}

int plotpoints(int xcenter,int ycenter,int x,int y) {

putpixel(xcenter+x,ycenter+y,1);

putpixel(xcenter-x,ycenter+y,1);

putpixel(xcenter+x,ycenter-y,1);

putpixel(xcenter-x,ycenter-y,1);

putpixel(xcenter+y,ycenter+x,1);

putpixel(xcenter-y,ycenter+x,1);

putpixel(xcenter+y,ycenter-x,1);

putpixel(xcenter-y,ycenter-x,1);

}

 


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