| # Shrink filter and wireframe rendering | |
| - Creates a sphere source, applies a shrink filter to the active sphere (then halves the shrink factor to shrink pieces more) and doubles the sphere’s resolution for finer longitudinal tessellation. | |
| - Extracts a wireframe from the original sphere surface, then groups the shrunken surface and the wireframe together so both render simultaneously. | |
| - Shows the grouped output, renders, and saves a white‑background screenshot to `shrink-sphere.png` at 1920×1080. | |