I pair coded a Three.js Matcap material applied to a PLY mesh with Gemini (2.5) CLI.
Twist test #2 spinning and spinning
Attribution
May 2026
Matcap 736655_D9D8D5_2F281F_B1AEAB-512px
3D design and render: NMoroney
The matcap used was 736655_D9D8D5_2F281F_B1AEAB-512px from the repo nidorx/matcaps.
The object was a custom minimal quad poly designed in Blender. The PLY mesh was a triangulated export with MeshLab isotropic remeshing (1% target length and 15 degree crease angle).
The animation loop has separate rotation rates for x, y and z.
So it just spins and spins.
At one point I was stuck and found this video helpful (thanks Robot Bobby).
The JavaScript code for ply meshes with matcap materials is here.
2026-05-20
NMoroney