				map, 
						mbxContext,
						{defaultLights: true}
					);

					var tubeOptions = {
						geometry: lineGeometry,
						radius: 1,
						sides: 8,
						material: 'MeshPhysicalMaterial',
						color:'#00ffff'
					}

					tube = tb.tube(tubeOptions);
					// tube.material.wireframe = true
					tb.add(tube);

				},
				
				render: function(gl, matrix){
					tb.update();
				}
			});
		});

	</script>
</body>