SinusCone ΘΦ-a ThetaPhi algorithm for human arm animation

Arm animation algorithms are often categorized by their constraint expansion strategy. One option is the geometric bounding polygon-cone strategy, a simple containment search strategy that traverses the search space in the order in which successor bounding polygon edges are generated. An alternative is the ThetaPhi-cone strategy, which was designed to make it possible to use domain-specific heuristic information. By exploring promising parts of the cone space first, ThetaPhi-cone algorithms generally are more efficient than polygon-cone algorithms