Applying a texture changes the size of the mesh

Describe the bug, what’s wrong, and what you expected.

When applying a texture (image of a seismic line), the cross section/mesh the image is supposed to be put on has shrunk. I would expect the image to be stretched across the entire mesh.

Steps to reproduce the bug.

import pyvista as pv

p = pv.Plotter(notebook=False)

tex = pv.read_texture('1.png')

# Adding or removing the texture is the only thing that is changed
p.add_mesh(mesh, texture=tex,cmap=odt_petrel)

p.show_grid(color='black')
p.set_background(color='white')
p.set_scale(1,1,1)
p.show()

System Information

--------------------------------------------------------------------------------
  Date: Sun Nov 20 20:19:23 2022 Mitteleuropäische Zeit

                OS : Windows
            CPU(s) : 16
           Machine : AMD64
      Architecture : 64bit
               RAM : 15.2 GiB
       Environment : Jupyter
        GPU Vendor : ATI Technologies Inc.
      GPU Renderer : AMD Radeon(TM) Graphics
       GPU Version : 4.5.14761 Core Profile Context 21.30.40.09 30.0.13040.9001

  Python 3.8.5 (default, Sep  3 2020, 21:29:08) [MSC v.1916 64 bit (AMD64)]

           pyvista : 0.33.3
               vtk : 9.0.1
             numpy : 1.19.2
           imageio : 2.13.1
           appdirs : 1.4.4
            scooby : 0.5.12
        matplotlib : 3.3.2
             PyQt5 : 5.12.3
           IPython : 7.22.0
          colorcet : 3.0.0
             scipy : 1.6.2
              tqdm : 4.50.2
            meshio : 4.4.6

  Intel(R) Math Kernel Library Version 2020.0.2 Product Build 20200624 for
  Intel(R) 64 architecture applications
--------------------------------------------------------------------------------
​

Screenshots

Mesh without texture

Mesh with texture

[AlexanderJuestel]

So, after adjusting the z_spacing and the z position, it is also possible to like change the clims of the mesh.

That is amazing 😃

[adeak]

Here’s what the image looks like in my image viewer:

Note the checkerboard strips at the top and bottom. Isn’t it just that your image has transparent parts, and those don’t get rendered on your mesh?