Python VTK -- Can we get the mesh rendered from the colorized point cloud

[banesullivan]

@ljc19800331

I am wondering if we can automatically capture the screen shots based on different camera angles … but it might be difficult in vtki

It’s quite easy. The camera position can be accessed and changed when plotting in vtki under the camera_position attribute of the plotter. Also, there are several convenience functions to view common perspectives (e.g. .view_xy()). Perhaps you’d benefit from some of the examples in the docs like this one. vtki also has a powerful background plotter that has a GUI for saving/loading camera positions.

@ljc19800331

I am wondering if there a more convenient way to obtain the data object stored in vtki object, such as vtkpoly data, etc, and use it with the vtk objects.

vtki data objects are subclasses of VTK data objects so any vtki data object will work seamlessly with VTK as we only provide a wrapping on top of the VTK data object. This wrapping doesn’t alter or convert the data, it simply provides numpy array access and convenience functions to get information from the dataset. There’s no need to “obtain the data object” as the vtki objects are instances of VTK data objects and can be treated as such.

@ljc19800331

I tried with my code but it is not getting any results:

Could you be more specific? The code you show should run and produce a visualization without error. If you’d like to apply the texture, you’ll have to do a bit more if using VTK for the rendering… try passing the texture you loaded to the actor: Actor.SetTexture(texture) and Mapper.SetScalarModeToUsePointFieldData()