1. A method comprising: sequentially displaying a plurality of two-dimensional body templates, each of the body templates illustrating a view of an external surface of a human body rotated an angle about an axis; receiving input from a user indicating a region of one of the body templates; mapping the input to a body surface coordinate system that describes a plurality of points on the external surface of the human body; regenerating the body template to illustrate the indicated region on the template based on the body surface coordinate system with the mapped input; and displaying the regenerated body template.