Floor plan and surfaces from photos

Put a floor plan on the floor

1. Click “Floor plan” and drag the plan as an image (JPG or PNG) onto the area, or click it and pick the image.
2. On the plan, click three corners of the hall in order: 1 back left, 2 back right (wall behind the DJ), 3 front right. A fourth click starts over.
3. Under “Length 1–2 (DJ wall)”, enter the real length of the wall behind the DJ in meters. Below it you see the hall size, e.g. “Hall 14 × 22 m (308 m²)”.
4. Click “Apply”. The hall takes its width and depth from the plan, the plan lies on the floor, and the view jumps to the top view.
5. In the “Floor plan” block of the “Location” area, set “Plan” to “on the floor” or “hide” and adjust the “Opacity”. “Set corners again” reopens the plan, “Remove floor plan” takes it out.