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. Author manuscript; available in PMC: 2010 Jun 17.
Published in final edited form as: Conf Proc IEEE Eng Med Biol Soc. 2009;2009:5909–5912. doi: 10.1109/IEMBS.2009.5334843

Fig. 2.

Fig. 2

Illustration of the list-based approach to represent and calculate the union of multiple spheres. Note that the segments are separated by the “bisector” between two intersecting spheres. Each sphere has its own set of line segments. All line segments with the same y-z coordinates will be linked into a list.