3D
These sketches opt into Ollin's 3D mode. 2D stays the default. A sketch becomes 3D when it sets a camera (perspective/ortho/camera). The renderer then adds a depth buffer and draws 3D geometry through that camera. World space is right-handed and y-up.
The section is large, so the sketches are grouped by topic, one page each.
| Group | What it covers |
|---|---|
| Geometry | This group covers meshes, point clouds, and the 3D transform stack. (27 sketches) |
| Physics | This group covers bodies inside the scene, rigid and soft: stacks and joints, cloth, rope, and floating. A Jolt-backed World3D is stepped each frame (import OllinPhysics), and every body is drawn from its pose with withBody. See the 3D physics reference. (22 sketches) |
| Camera | This group covers driving the view: interactive control, cinematic moves, and snaps to inspection views. (3 sketches) |
| Materials | This group covers what surfaces are made of: stylized finishes, physically based metal, glass, subsurface, thin film, and the map set that varies any of them per pixel. (17 sketches) |
| Lighting | This group covers the light kinds, curated rigs, and cast shadows. (11 sketches) |
| Environments | This group covers image-based lighting, with HDRIs that are bundled, downloaded, loaded from a URL, or synthesized. (6 sketches) |
| Effects | This group covers the scene-wide realism passes over the 3D frame. (13 sketches) |
| Raymarching | This group covers the 3D SDF combinators: distance fields that merge, sphere-traced beside the meshes. (17 sketches) |
| Depth | This group covers depth feeds and depth-aware compositing: cameras, recordings, and metric space. (6 sketches) |
| Phone | These sketches read the Ollin Capture iPhone app, which streams ARKit perception, and what the phone hears, over USB. (17 sketches) |
See Docs/3D/3D.md for the 3D guide. Record3D recordings have their own guide in Docs/3D/Record3D.md. The Ollin Capture stream is documented in Docs/3D/Phone.md.