2D plot on surface of VTK Object

Hi there,

I created a VTK object, which is made out of 20 cubes and appears to be one cube, with several Layers, defined through different colours.
I created a polar plot with Matplotlib. Now I want to integrate those two. I converted the Matplot to a PDF file, via Pandas. Hence I want to lay this 2D plot on top if the cube. Is that possible? And is it possible that the cube is than still interactive? What would be your suggestions?

I am thankful for any help.

Cheers,

You may want to take a look at using texture maps.

Most probably you can paint the surface directly with VTK, so there is no need to mess with matplotlib at all.

Using vtkImageActor can also be an option , trying to reproduce the above with vedo.Picture(vtkImageActor)

import numpy, vtk
from vedo import *
from vedo.pyplot import histogram

settings.annotatedCubeColor      = 'brown'
settings.annotatedCubeTextColor  = 'white'
settings.annotatedCubeXPlusText  = "R"
settings.annotatedCubeXMinusText = "L"
settings.annotatedCubeYPlusText  = "F"
settings.annotatedCubeYMinusText = "B"
settings.annotatedCubeZPlusText  = "T"
settings.annotatedCubeZMinusText = "D"
settings.annotatedCubeTextScale  = 0.5

box = Box(size=(8,5,1)).c('grey')
his = histogram(numpy.random.randn(10000),
                mode='polar', cmap='viridis_r', showDisc=False)
his.scale(2).pos(1,0,0.51)

f = 'https://matplotlib.org/_images/sphx_glr_polar_legend_001.png'
pic = Picture(f).scale(5e-3).pos(-3.5,-1.2,0.51)

show(box, his, pic, axes=5, bg='steelblue', bg2='royalblue')

print(isinstance(pic, vtk.vtkImageActor)) # True

Screenshot from 2020-06-28 14-35-17

I am very new to VTK and this is my first question . Thanks for all the answers, they helped a lot! It worked with vtkPlaneSource. Also vtkImageActor was great. I continued working on the project.
Now I want to create several quad objects with VTK. For example 3 quads, which are next to each other and on each of the element I want to set a different png.
Is it possible to set png on a quad or tria element ?

Cheers,