Try it out at https://impossidraw.kranz.au
A design tool for creating portal-based impossible spaces.
The tool ensures maximum room size is respected, and portal positions are correct, with corresponding portals always being in the same position relative to their enclosing room.
Also allows you to export as a 3D model, by extruding the walls, with wall thickness and height configurable.
Built in React with Konva and three.js
https://www.youtube.com/watch?v=ScaakoghDn8
In the 3D Builder, portals now display bright yellow corner indicators at each corner of the portal opening. These small extruded blocks make portals instantly identifiable when importing the 3D model into Unity or other 3D editors, allowing for precise portal placement.
The 3D Builder now includes an "Export Portal Schema" button that generates a downloadable .txt file containing:
- XYZ coordinates of all portal corners (in millimeters)
- Portal connection information
- Room associations
- Unique portal IDs
This data can be used to programmatically position portals in Unity or other game engines with exact coordinate precision.
https://www.youtube.com/watch?v=T-HjJbsD0Yc
Figure: Welcome Screen
Figure: New project screen
Figure: The Canvas
Figure: Placing a Room
Figure: The placed room
Figure: Creating a wall
Figure: Moving the vertex of a wall
Figure: Creating a portal
Figure: 3D Builder Screen