app.py

import pyrender
import numpy as np
import trimesh

# Create a simple mesh
mesh = trimesh.Sphere(radius=1.0)
mesh = pyrender.Mesh.from_trimesh(mesh)

# Create a scene and add the mesh
scene = pyrender.Scene()
scene.add(mesh)

# Create a viewer
pyrender.Viewer(scene, use_raymond_lights=True)