Random Path Example

This example uses motion to mark 50 steps

along a path in which the direction/angle

of each step is random.

​

To choose a random direction, we choose a 

random angle. We then take a step with 

vx=COS(angle) ad vy=SIN(angle).

*/

function setup(){

  //no special setup needed

}

function draw(){

  var x,y;      //coordinates

  var vx,vy;    //velocity

  var angle;    //angle/direction

  var i;        //index

  //start in middle of screen

  x=width/2;

  y=height/2;

  //draw 500 steps of path

  for (i=0;i<500;i++){

    fillrect(x,y,1,1);

    //update velocity

    angle=random()*360;

    vx=COS(angle);

    vy=SIN(angle);

    //update position

    x=x+vx;

    y=y+vy;

​

  }

}

​