TopoShapeEdge is the OpenCasCade topological edge wrapper Vector = tangentAt(pos) - Get the tangent at the given parameter [0|Length] if defined Vector = valueAt(pos) - Get the point at the given parameter [0|Length] if defined Vector = normalAt(pos) - Get the normal vector at the given parameter [0|Length] if defined Vector = d1At(pos) - Get the first derivative at the given parameter [0|Length] if defined Vector = d2At(pos) - Get the second derivative at the given parameter [0|Length] if defined Vector = d3At(pos) - Get the third derivative at the given parameter [0|Length] if defined Float = curvatureAt(pos) - Get the curvature at the given parameter [0|Length] if defined Vector = centerOfCurvatureAt(float pos) - Get the center of curvature at the given parameter [0|Length] if defined Set the tolerance for the edge. Discretizes the edge using a given deflection or number of points and returns a list of points Set or get the tolerance of the vertex Returns the length of the edge Returns a 4 tuple with the parameter range Returns the 3D curve of the edge Returns the center of mass of the current system. If the gravitational field is uniform, it is the center of gravity. The coordinates returned for the center of mass are expressed in the absolute Cartesian coordinate system. Returns true of the edge is closed Returns true of the edge is degenerated