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

int t1,t2,vx[100],vy[100];

void desen(int t1,int t2);

void main(void)
{
// MERGE cu : 0.2,0.3;0.5,0.3;0.4,0.9;0.1,0.9;
int gd,gm,i;
float a,b,arg,val1,val2;

	clrscr();
//cleardevice();
//randomize();


	printf("a si b");
	scanf("%f %f",&a,&b);
	t1=0;
	t2=ceil(10*M_PI*10);

	for(i=t1;i<=t2;i++)
	{
		arg=i/10.0;
		val1=b*arg/a;
		val2=arg+b*arg/a;
		vx[i]=ceil(((a+b)*cos(val1)-b*cos(val2))*60)+150;
		vy[i]=ceil(((a+b)*sin(val1)-b*sin(val2))*60)+150;
	}

	detectgraph(&gd,&gm);
	initgraph(&gd,&gm,"C:\\borlandc\\bgi");
	cleardevice();

	moveto(120,150);
	lineto(180,150);
	moveto(150,120);
	lineto(150,180);
	desen(t1,t2);


	getch();
//  closegraph();

}

void desen(int t1,int t2)
{
	int i;
	moveto(vx[0],vy[0]);
	for (i=t1+1;i<=t2;i++)
	{
		lineto(vx[i],vy[i]);
		delay(20);
	}
}