code: function BoundingBox3D( xMin , yMin , zMin , xMax , yMax , zMax ) {
  	this.min = new Vector3D( xMin , yMin , zMin ) ;
  	this.max = new Vector3D( xMax , yMax , zMax ) ;
  }
docs: A starting point/position and a vector, i.e. vector applied on a point/position.