Wireframe 2

Example showing a Torus knot, as a wireframe. We create two wireframes, one for the front, bright blue and lit, and one for the back, unlit and gray.

from rendercanvas.auto import RenderCanvas, loop
import pygfx as gfx
import pylinalg as la


canvas = RenderCanvas()
renderer = gfx.renderers.WgpuRenderer(canvas)
scene = gfx.Scene()

geometry = gfx.torus_knot_geometry(1, 0.3, 64, 8)

material1 = gfx.MeshBasicMaterial(
    color=(0.2, 0.2, 0.2, 1.0), wireframe=True, wireframe_thickness=3, side="back"
)
obj1 = gfx.Mesh(geometry, material1)
scene.add(obj1)

material2 = gfx.MeshPhongMaterial(
    color=(0, 0.8, 0.8, 1), wireframe=True, wireframe_thickness=3, side="front"
)
obj2 = gfx.Mesh(geometry, material2)
scene.add(obj2)

camera = gfx.PerspectiveCamera(70, 1)
camera.local.z = 4

scene.add(gfx.AmbientLight(0.2), camera.add(gfx.DirectionalLight(0.8)))


def animate():
    rot = la.quat_from_euler((0.0071, 0.01), order="XY")
    obj1.local.rotation = la.quat_mul(rot, obj1.local.rotation)
    obj2.local.rotation = la.quat_mul(rot, obj2.local.rotation)

    renderer.render(scene, camera)
    canvas.request_draw()


if __name__ == "__main__":
    canvas.request_draw(animate)
    loop.run()