Mouse and touch
Grab toolDrag an object to pull it through the world.
Drop toolClick or paint to add single objects. Shift+drag works from any tool.
Throw toolClick a point to fire the selected rigid shape toward it.
Erase toolClick any movable body to remove it.
CameraDrag empty space to orbit; right-drag to pan; scroll or pinch to zoom.
Keyboard
1Grab tool
2Drop tool
3Throw tool
4Erase tool
SpacePause or resume
.Advance one step
ZUndo the latest add
RRestart the scene
FFire toward the camera focus
HomeFrame the scene
HShow or hide controls
About
An implementation of Augmented Vertex Block Descent by Giles, Diaz, and Yuksel
(SIGGRAPH 2025), written from the paper, with a CPU engine and a parallel WebGPU
backend.
Read the project page
.