code: function Scene(container) {
      var ctx = container.getContext('2d'),
          cachedHeight = container.height,
          cachedWidth = container.width,
          getWidth = function () {
              return cachedWidth;
          },
          getHeight = function () {
              return cachedHeight;
          },
          renderHandle = function (color, handle) {
              ctx.fillStyle = color;
              ctx.fillRect(handle.x, handle.y, handle.width, handle.height);
          },
          clearBackground = function (color) {
              ctx.fillStyle = color;
              ctx.fillRect(0, 0, getWidth(), getHeight());
          },
          renderBall = function (color, ball) {
              ctx.beginPath();
              ctx.fillStyle = color;
              ctx.arc(ball.x, ball.y, settings.ballradius, 0, 2 * Math.PI, false);
              ctx.fill();
              ctx.stroke();
          };
  
      return {
          width: function () {
              return getWidth();
          },
          height: function () {
              return getHeight();
          },
          render: function (leftHandle, rightHandle, ball) {
              clearBackground('#000000');
              renderHandle('#ccaa00', leftHandle);
              renderHandle('#00aa00', rightHandle);
              renderBall('#ffffff', ball);
          }
      };
  }
docs: Renders game to the canvas.