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Orientation
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fo.operator() ( Kernel::Point_3 p, Kernel::Point_3 q, Kernel::Point_3 r, Kernel::Point_3 s)
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returns POSITIVE, if lies on the positive side of the oriented
plane defined by , , and , returns NEGATIVE if
lies on the negative side of , and returns COPLANAR if lies
on .
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Orientation
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fo.operator() ( Kernel::Vector_3 u, Kernel::Vector_3 v, Kernel::Vector_3 w)
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returns POSITIVE if , and are positively oriented,
returns NEGATIVE if , and are negatively oriented,
and returns COPLANAR if , and are coplanar.
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Orientation
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fo.operator() ( Kernel::Sphere_3 s)
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returns the orientation of the sphere s.
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