CG - 8 - Curve Generation using Interpolation and Bezier Curve

Curve Generation: Design any object such as flower, waves using following curves geneartion techniques
2.Curve Generation using Bezier Curve

#include <stdio.h>
#include <stdlib.h>
#include <graphics.h>
#include <math.h>

void bezier (int x[4], int y[4])
{
 int gd = DETECT, gm;
 int i;
 double t;

 initgraph (&gd, &gm,"..\\bgi");
 for (t = 0.0; t < 1.0; t += 0.0005)
 {
  double xt =pow(1-t,3)* x[0]+3*t* pow (1-t, 2) * x[1] +
  3 *pow(t, 2) * (1-t) * x[2] +pow(t, 3) * x[3];

  double yt =pow(1-t, 3) * y[0] + 3 * t *pow(1-t, 2) * y[1] +
  3 *pow(t, 2) * (1-t) * y[2] +pow(t, 3) * y[3];

  putpixel (xt, yt, WHITE);
 }

 for(i=0; i<4; i++)
 putpixel (x[i], y[i], YELLOW);

 getch();
 closegraph();
 return;
}

void main()
{
 int x[4], y[4];
 int i;

 printf ("Enter the x- and y-coordinates of the four control points.\n");
 for(i=0; i<4; i++)
 scanf("%d%d", &x[i], &y[i]);
 bezier (x, y);
}