Winding
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The winding number is intimately connected to the sideof function, which is used more often in applications.
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Meshes.winding — Function
winding(points, object)Generalized winding number of points with respect to the geometric object.
References
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Barill et al. 2018. Fast winding numbers for soups and clouds
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Jacobson et al. 2013. Robust inside-outside segmentation using generalized winding numbers
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Oosterom, A. & Strackee, J. 1983. The Solid Angle of a Plane Triangle
points = [Point(0, 0), Point(0.2, 0.2), Point(2, 1)]
polygon = Triangle((0, 0), (1, 0), (0, 1))
winding(points, boundary(polygon))3-element Vector{Float64}:
0.25
1.0
0.0