Actually, creativity is up to you 
Here is a very rough concept, based on THREE.Raycaster() and THREE.ExtrudeGeometry().
https://jsfiddle.net/prisoner849/L7njaghm/

Actually, creativity is up to you 
Here is a very rough concept, based on THREE.Raycaster() and THREE.ExtrudeGeometry().
https://jsfiddle.net/prisoner849/L7njaghm/
