First check

• I added a very descriptive title here.
• I used the GitHub search to find a similar question and didn't find it.
• I searched the PyVista documentation, with the integrated search.
• I already searched in Google "How to X in PyVista" and didn't find any information.
• I already read and followed all the tutorial in the docs and didn't find an answer.
• I will NOT make duplicate discussions or issues in the future.

Commit to Help

• I commit to help with one of those options.

Sample Code What is the problem, question, or error?

Write a short description telling me what you are doing, what you expect to happen, and what is currently happening.

import pyvista as pv
import numpy as np

point_cloud = pv.PolyData(np.array([[0.0, 0.0, 0.0], [1.0, 0.0, 0.0], [2.0, 0.0, 0.0]]))

pl = pv.Plotter(
    shape=(2, 2),
    # off_screen=True,
    # Disable lighting to see difference between points_gaussian and points lighting
    lighting=None,
)

for i, style in enumerate(["points", "points_gaussian"]):
    for j, zoom in enumerate([1.0, 3.0]):
        pl.subplot(i, j)
        actor = pl.add_mesh(
            point_cloud.copy(),
            point_size=50,
            render_points_as_spheres=True,
            emissive=False,
            style=style,
        )
        pl.camera_position = "xy"
        pl.camera.zoom(zoom)
        pl.add_text(f"{style} {'far' if zoom == 1.0 else 'close'}")

# pl.screenshot("experiments/pyvista_points.png")
pl.show()

Description

I'm essentially looking for two behaviors when visualizing point clouds, and I figured out how to find each independently, but not jointly:

1. I'd like the points to still respond to lighting effects in the environment
2. I'd like the points to scale up as I zoom in, i.e. when zoomed in closer the points get larger. Basically the opposite of How do I create Glyphs that scale when zooming to always appear as the same size, similar to point and line actors? #5205.

I've found that points_gaussian solves (2), but has fixed lighting and no longer responds to changes in the lighting in the environment, while render_points_as_spheres solves (1), but doesn't zoom as desired. This can be seen in the attached screenshot (also the output of the submitted code):

Is there a way to enable custom lighting for points_gaussian, or to enable scaling when zooming for the default render_points_as_spheres? Or any other approach that I may be missing here?

System Information

--------------------------------------------------------------------------------
  Date: Thu Aug 28 21:41:27 2025 EDT

                OS : Linux (Ubuntu 20.04)
            CPU(s) : 24
           Machine : x86_64
      Architecture : 64bit
       Environment : Python
        GPU Vendor : NVIDIA Corporation
      GPU Renderer : NVIDIA GeForce RTX 3090/PCIe/SSE2
       GPU Version : 4.5.0 NVIDIA 535.261.03
     Render Window : vtkXOpenGLRenderWindow
  MathText Support : True

  Python 3.11.9 (main, Aug 14 2024, 05:07:28) [Clang 18.1.8 ]

           pyvista : 0.46.3
               vtk : 9.5.0
             numpy : 2.3.0
        matplotlib : 3.10.3
            scooby : 0.10.1
             pooch : 1.8.2
            pillow : 11.2.1
             scipy : 1.16.1
              tqdm : 4.67.1
--------------------------------------------------------------------------------

Screenshots