code: function () {
              var m = this.transformation, devicePixelRatio = window.devicePixelRatio || 1;
  
              this.layer.forEach(function (l) {
                  l.ctx.setTransform(devicePixelRatio * m[0][0], m[1][0], m[0][1], devicePixelRatio * m[1][1], devicePixelRatio * m[0][2], devicePixelRatio * m[1][2]);
              });
          }
docs: Applies the current transformations to the screen