Draws a circle using a Tapster robot

draw-a-circle.js

var centerX=0;
var centerY=0;
var radius=20;

// an array to save your points
var points=[];

// populate array with points along a circle
for (var degree=0; degree<360; degree++){
    var radians = degree * Math.PI/180;
    var x = centerX + radius * Math.cos(radians);
    var y = centerY + radius * Math.sin(radians);
    points.push({x:x,y:y});
}

circle = function() {
  for (var i=0; i<360; i+=1) {
    setTimeout( function(point) { go(point.x, point.y, -141) }, i*2, points[i]);
  }
}

circle()