Geometry.FillContainsWithDetail Method (Geometry)
Returns a value that describes the intersection between the current geometry and the specified geometry.
Assembly: PresentationCore (in PresentationCore.dll)
The default tolerance factor (defined by the StandardFlatteningTolerance property) is used when determining whether the current geometry contains the specified geometry. To specify your own tolerance factor, use the FillContainsWithDetail method.
Some Geometry methods (such as FillContainsWithDetail) produce or use a polygonal approximation of the geometry. The tolerance factor specifies the maximum distance between points in this polygonal approximation. Smaller tolerance values produce better approximations, but require more processing than an approximation with a large tolerance factor.