simple shapes for tic-tac-toe

board.js

define(function() {
  var Board = Class.extend({
    paint: function(context) {
      var width = context.canvas.width,
          height = context.canvas.height;

      var padding = 5;

      for (var i = 0; i < 4; i++) {
        var line;

        switch (i) {
          case 0:
            line = [
              {x: width / 3, y: padding },
              {x: width / 3, y: height - padding }
            ];
            break;
          case 1:
            line = [
              {x: width / 3 * 2, y: padding },
              {x: width / 3 * 2, y: height - padding }
            ];
            break;
          case 2:
            line = [
              {x: padding, y: height / 3 },
              {x: width - padding, y: height / 3 }
            ];
            break;
          case 3:
            line = [
              {x: padding, y: height / 3 * 2 },
              {x: width - padding, y: height / 3 * 2 }
            ];
        }

        context.beginPath();
        context.moveTo(line[0]['x'], line[0]['y']);
        context.lineTo(line[1]['x'], line[1]['y']);
        context.stroke();
      }
    }
  });

  return Board;
});

o.js

define(function() {
  var paint = function(context, bounds) {
    var width = context.canvas.width,
        height = context.canvas.height;

    var padding = 5;
    
    context.lineWidth = 2;

    context.beginPath();
    context.arc(width / 2, height / 2, (width - padding) / 2, 0, 2 * Math.PI, false);
    context.stroke();
  }

  return paint;
});

x.js

define(function() {
  var paint = function(context, bounds) {
    var width = context.canvas.width,
        height = context.canvas.height;

    var padding = 5;
    
    context.lineWidth = 2;

    context.beginPath();
    context.moveTo(padding, padding);
    context.lineTo(width - padding, height - padding);
    context.stroke();

    context.beginPath();
    context.moveTo(width - padding, padding);
    context.lineTo(padding, height - padding);
    context.stroke();
  }

  return paint;
});