VTK polydata

import numpy as np
import k3d
import vtk

plot = k3d.plot()

model_matrix = (
    1.0, 0.0, 0.0, 0.0,
    0.0, 0.0, 1.0, 0.0,
    0.0, 1.0, 0.0, 0.0,
    0.0, 0.0, 0.0, 1.0
)

reader = vtk.vtkXMLPolyDataReader()
reader.SetFileName('/assets/cow.vtp')
reader.Update()

cow3d = k3d.vtk_poly_data(reader.GetOutput(), color=0xff0000,
                          model_matrix=model_matrix)
plot += cow3d

plot.display()