add: this.updateTrianglePlanes(function(plane) { return plane.rotate(t, line); }); 
context:   rotate: function(t, line) {    var R = Matrix.Rotation(t, line.direction);    this.vertices.each(function(node) {      node.data.setElements(node.data.rotate(R, line).elements);    });    this.plane = this.plane.rotate(t, line);    return this;  },
meta: 3877	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/3877/88af0516a961fea263ffc0d016435fdbb11d55cf/polygon.js/buggy/src/polygon.js