r/Sketchup

I wanted to draw the plan of an apartment to scale and print it. The options were a CAD program with a 1990s command line, or a subscription. So I started building the tool I wanted.

OpenCalque is a 2D editor for floor plans and layouts with a Figma-style interface. "Calque" is French for tracing paper. Try it right now, nothing to install: https://opencalque.com

What it does today:

• Walls that behave like walls. They join at any angle, stay joined when you drag one, and doors and windows snap in and cut the opening.
• Rooms find themselves. Click inside closed walls and you get a named room with its area, which follows the walls when they move.
• Trace an existing plan. Drop a PDF or a photo, click two points you know the distance between, draw over it.
• DXF in and out, plus SVG.
• A component library (furniture, kitchen, bathroom, electrical symbols) and extensions that are data, not code, so installing one can't run anything.
• Optional AI assistant that edits the drawing from a description, with Claude, a local model through Ollama, or any OpenAI-compatible API. Nothing goes online unless you use it.
• English, French, Spanish, German.

The part I care most about: a drawing is plain JSON with a published schema, and every edit is a small JSON operation. The editor, the CLI and the assistant all use the same operations, so you can generate or modify a plan from a script.

No account, no telemetry, MIT licence.

• Repo and screenshots: https://github.com/laurent512/opencalque
• Downloads: https://github.com/laurent512/opencalque/releases/latest

I'd love feedback from people who draw plans for real: what would stop you from using this, and what's the first thing you'd miss?

What would be the easiest way do do something like the second image?

One of the past project when we used lumion.

I made one big rectangle and then realised it needs to be split up into multiple parts. but why when I try to make the smaller one it reverts back to the old one? please help.

tried downloading sketchup and tried to create a house, i wanted to see what the shadow would look like casted to the ground in a 45degree angle. Can someone help me? They can send a picture in their own computer.. im trying to see if the shadow is correct in my manual drafting.