Fig. 3From: A rapid and intelligent designing technique for patient-specific and 3D-printed orthopedic cast a Centerline is sliced as segments with equal distance and generated as a number of polyline loops on the cross section of the cast surface. b User-specified point is selected by a technician for locating the opening gap. Alpha point is a reference point for further locating centers of holes. c A bundle of vector lines are created for locating the hole centersBack to article page