AIM:
To write a program for midpoint circle drawing.
ALGORITHM:
Step 1: Start.
Step 2: Initialize the graphics header files and functions.
Step 3: Declare the required variables and functions.
Step 4: Get the co-ordinates and radius of the circle.
Step 5: Draw the circle using the algorithm.
Step 6: Display the output.
Step 7: Stop.
PROGRAM CODE:
#include <stdio.h>
#include <conio.h>
#include <math.h>
#include <graphics.h>
void main()
{ int gd=DETECT,gm; int xcenter,ycenter,radius; int p,x,y; initgraph(&gd,&gm,"c:turboc3bgi"); x=0; printf("n Enter The Radius Value:"); scanf("%d",&radius); y=radius; printf("n Enter The xcenter and ycenter Values: "); 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();
}
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);
}
OUTPUT:
RESULT:
Thus the program for midpoint circle drawing is written and executed successfully.
