A question about using Trame with VTK9.2.6

[lkaly]

Hello, sorry to bother you. I have encountered an issue and I would appreciate some help. I am using Trame and VTK, and I noticed that the solution_ray_cast.py file in the 01_vtk folder uses vtkFixedPointVolumeRayCastMapper for volume rendering of structured files. Now, I am trying to write a code for volume rendering of unstructured files using vtkSmartVolumeMapper.

Figure 1.

Figure 2.
I have consulted the official VTK documentation, and both vtkFixedPointVolumeRayCastMapper and vtkSmartVolumeMapper are derived from vtkVolumeMapper(as Figure 3). In the solution_ray_cast.py file, the command shown in Figure 4 is used. I attempted to use a similar command for vtkSmartVolumeMapper as Figure 5, but it resulted in an error as Figure 6. I'm wondering what could be the issue here?

Figure 3.

Figure 4.

Figure 5.

Figure 6.

If I want to find out the inheritance relationship of certain VTK classes in Python in the future, where can I look it up?
Thanks very much.

[jourdain]

A Google search should bring you to the doxygen documentation and class diagram but if you want to find in which vtk module it is available you will need to search in the code.

The easier approach for you right now would be to do the following

import vtk

mapper = vtk.vtkSmartVolumeMapper()

[lkaly]

Thanks very much!