slop.boutique

A lab for computation and intelligence as material and medium. Run by Manuel and Ramon.

046 · 24 October 2026 · digital-twins · 3d · shaders

Twin Render Playground

The ink renderer behind the factory twins on its own: build a room from the asset library and tune looks, buffers, cameras, coverage, paths and callouts live.

Previewin your browser
The Blueprint look: a lab with racks, benches, a robot cell and walking people on a dark floor, with recorded paths and camera cards

In early access for subscribers until 22 November 2026. Subscribe to run it now.

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The ink renderer behind the factory twins, with nothing else around it. There is no script here: you click a room together from the asset library, move cameras, draw paths and turn the renderer's knobs, and see each change at once. Lab 104 · Factory Twin writes the same kind of scene in code and simulates it; this playground is for seeing what the drawing itself can do.

  • Two looks and their knobs: Technical and Blueprint, with sliders for ambient light, cool shift, shadow strength, line weight, line opacity, interior lines and creases, and the paper, floor, ink and coverage colours.
  • Buffers: show the final image, or the colour, ids, normals, depth or lines buffer it is made from.
  • Room and assets: set the room's size, wall height, glass sides and doors, and place monitors, racks, benches, carts, robot cells, AMRs, quadrupeds and more from the library. Click anything to edit it.
  • Cameras and coverage: fisheye and pinhole cameras with editable lens and pose, view cones, coverage on the floor and blind spots, and walls that fold when they face you.
  • Paths and callouts: draw tracks or generate random ones, smooth them, add walkers with live trails, and tune the cost weights that keep camera cards from flipping sides as you orbit.
  • Inspect: prototypes, instances, draw calls, triangles, frame rate and each camera's depth map, and a button to copy the site as JSON.

Built with three.js.

The full playground: the 3D view with camera cones and cards, the view toggles on top and the asset library on the right
The full playground: the 3D view with camera cones and cards, the view toggles on top and the asset library on the right
The same room in the Ids buffer, each object a flat colour
The same room in the Ids buffer, each object a flat colour
Editing camera cam-1: lens type, field of view, distortion and pose sliders beside the view
Editing camera cam-1: lens type, field of view, distortion and pose sliders beside the view
The room in the Normals buffer
The room in the Normals buffer
The Look tab: shading, ink, colour and buffer controls for the renderer
The Look tab: shading, ink, colour and buffer controls for the renderer
The room in the Lines buffer: only the ink edges
The room in the Lines buffer: only the ink edges
The Inspect tab: prototypes, instances, draw calls, triangles, frame rate and the camera depth maps
The Inspect tab: prototypes, instances, draw calls, triangles, frame rate and the camera depth maps
Close-up of the room in the Technical look, with recorded tracks on the floor
Close-up of the room in the Technical look, with recorded tracks on the floor
The Callouts tab: card width and gap and the cost weights that keep camera cards from flipping sides
The Callouts tab: card width and gap and the cost weights that keep camera cards from flipping sides
Top view with camera coverage on the floor and history tracks
Top view with camera coverage on the floor and history tracks
The Room tab: width, depth, wall height, glass sides and doors
The Room tab: width, depth, wall height, glass sides and doors