TopoShapeEdge is the OpenCasCade topological edge wrapper float = getParameterByLength(float) - Return parameter [First,Last]. Input value must be of [0|Length] Vector = tangentAt(pos) - Get the tangent at the given parameter [First|Last] if defined Vector = valueAt(pos) - Get the point at the given parameter [First|Last] if defined Float = parameterAt(Vertex) - Get the parameter at the given vertex if lying on the edge Vector = normalAt(pos) - Get the normal vector at the given parameter [First|Last] if defined Vector = d1At(pos) - Get the first derivative at the given parameter [First|Last] if defined Vector = d2At(pos) - Get the second derivative at the given parameter [First|Last] if defined Vector = d3At(pos) - Get the third derivative at the given parameter [First|Last] if defined Float = curvatureAt(pos) - Get the curvature at the given parameter [First|Last] if defined Vector = centerOfCurvatureAt(float pos) - Get the center of curvature at the given parameter [First|Last] if defined Set the tolerance for the edge. Discretizes the edge and returns a list of points. The function accepts keywords as argument: discretize(Number=n) => gives a list of 'n' equidistant points discretize(QuasiNumber=n) => gives a list of 'n' quasi equidistant points (is faster than the method above) discretize(Distance=d) => gives a list of equidistant points with distance 'd' discretize(Deflection=d) => gives a list of points with a maximum deflection 'd' to the edge discretize(QuasiDeflection=d) => gives a list of points with a maximum deflection 'd' to the edge (faster) discretize(Angular=a,Curvature=c,[Minimum=m]) => gives a list of points with an angular deflection of 'a' and a curvature deflection of 'c'. Optionally a minimum number of points can be set which by default is set to 2. Optionally you can set the keywords 'First' and 'Last' to define a sub-range of the parameter range of the edge. If no keyword is given then it depends on whether the argument is an int or float. If it's an int then the behaviour is as if using the keyword 'Number', if it's float then the behaviour is as if using the keyword 'Distance'. Example: import Part e=Part.makeCircle(5) p=e.discretize(Number=50,First=3.14) s=Part.Compound([Part.Vertex(i) for i in p]) Part.show(s) p=e.discretize(Angular=0.09,Curvature=0.01,Last=3.14,Minimum=100) s=Part.Compound([Part.Vertex(i) for i in p]) Part.show(s) Splits the edge at the given parameter values and builds a wire out of it isSeam(Face) - Checks whether the edge is a seam edge. Set or get the tolerance of the vertex Returns the length of the edge Returns a 2 tuple with the parameter range Returns the start value of the parameter range Returns the end value of the parameter range Returns the 3D curve of the edge Returns true of the edge is closed Returns true of the edge is degenerated Returns the mass of the current system. 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 the matrix of inertia. It is a symmetrical matrix. The coefficients of the matrix are the quadratic moments of inertia. | Ixx Ixy Ixz 0 | | Ixy Iyy Iyz 0 | | Ixz Iyz Izz 0 | | 0 0 0 1 | The moments of inertia are denoted by Ixx, Iyy, Izz. The products of inertia are denoted by Ixy, Ixz, Iyz. The matrix of inertia is returned in the central coordinate system (G, Gx, Gy, Gz) where G is the centre of mass of the system and Gx, Gy, Gz the directions parallel to the X(1,0,0) Y(0,1,0) Z(0,0,1) directions of the absolute cartesian coordinate system. Returns Ix, Iy, Iz, the static moments of inertia of the current system; i.e. the moments of inertia about the three axes of the Cartesian coordinate system. Computes the principal properties of inertia of the current system. There is always a set of axes for which the products of inertia of a geometric system are equal to 0; i.e. the matrix of inertia of the system is diagonal. These axes are the principal axes of inertia. Their origin is coincident with the center of mass of the system. The associated moments are called the principal moments of inertia. This function computes the eigen values and the eigen vectors of the matrix of inertia of the system.