// CSE 143 
// Homework 5 
// http://www.cs.washington.edu/education/courses/143/00su/homework/ 
// 30 Jul 2000, Ken Yasuhara


#include <stdlib.h>
#include <math.h>
#include "util.h"


double 
randFraction() 
{
  return ((double)rand() / RAND_MAX);
}


double 
randAngle() 
{
  return randFraction() * 2.0 * PI;
}


void 
pickRandPositionInCircle(double &x, double &y, 
                         double centerX, double centerY, double radius)
{
  double angle = randAngle();
  x = centerX + randFraction() * radius * cos(angle);
  y = centerY + randFraction() * radius * sin(angle);
}