Program to implement curve generation using Bezeir curve algorithm.

#include<iostream.h>
#include<conio.h>
#include<dos.h>
#include<graphics.h>
void main(){
int gd=DETECT,gm;
initgraph(&gd,&gm,"C:\\TCC\\BGI");
int x[4],y[4],px,py,i;
cout<<"Enter four control points of bezier curve:" ;
for(i=0;i<4;i++) cin>>x[i]>>y[i];
double t;
for(t=0.0;t<=1.0;t+=0.001){
px=(1-t)*(1-t)*(1-t)*x[0]+3*t*(1-t)*(1-t)*x[1]+3*t*t*(1-t)*x[2]+t*t*t*x[3];
py=(1-t)*(1-t)*(1-t)*y[0]+3*t*(1-t)*(1-t)*y[1]+3*t*t*(1-t)*y[2]+t*t*t*y[3];
putpixel(px,py,WHITE);
delay(2);
}
getch();
closegraph();
}