CAMERA CONTROLS
Right Click + DragRotate view (FPS style — camera stays in place)
W A S DMove camera forward / left / backward / right
SpaceMove camera down
ShiftMove camera up
ScrollZoom forward / backward in view direction
Middle Click + DragPan the view
ISO / TOP / FRONT / RIGHTSwitch to preset camera angles (right panel)
PANEL PLACEMENT
Left ClickPlace panel — clicking an occupied cell cycles the type, deletes on last type
RRotate panel direction (WALL-X → WALL-Z → CEILING)
[ ]Change active floor (down / up)
MMid mode — place panels between two grid points
What does Mid Mode do? Lets you place panels between normal grid points. This allows you to add a mid-floor between two full floors, or a mid-wall between two walls — ideal for hamster passages between smaller compartments.
PANEL TYPES
FLATSolid closed panel — wall, ceiling, floor
GRIDGrid panel — air circulation, visibility
DOORDoor panel — access door
HALFHalf-open panel
HALF DOORHalf door panel
TUNNELPanel with tunnel connection point
WATER/FEEDWater bottle and feeder slot panel
TUBE X / TUBE ZHorizontal tunnel tube — connects two tunnel entry panels
SAVE / LOAD
↓ SAVEDownload design as JSON file
↑ LOADOpen a previously saved JSON file
Browser auto-saves — your design is preserved even if you close the tab. Use JSON to transfer to other computers.
TIPS
If a tube is unmatched, an orange warning appears at the bottom left — click it to focus the camera on the mismatched area.
Filament color can be set per panel — use it to plan colors for your real print.
The ▶ VIEW button hides the sidebar, giving the full area to the 3D view. Click ✕ CLOSE at the top right to exit.