VTK_QUADRATIC_QUAD not displaying correctly
Using vtk 8.1.0 (PyPi package for Python 3.5), the VTK_QUADRATIC_QUAD is not displaying correctly. See attached. The VTK_QUAD counterpart also does not display correctly when only the celltype is changed and not the number of points. I've attached a plot of a single quadradic cell.
Here's the points along with cells I used to assemble to cell.
Points: [[0. , 0. , 0. ], [1. , 0. , 0. ], [1. , 1. , 0. ], [0. , 1. , 0. ], [0.5, 0. , 0. ], [1. , 0.5, 0. ], [0.5, 1. , 0. ], [0. , 0.5, 0. ]]
Cells: [8, 0, 1, 2, 3, 4, 5, 6, 7]
Flipping the order seems to cause a different rendering problem. [8, 0, 1, 2, 7, 4, 5, 6, 3]