Walls

Walls are the backbone of every Pascal building. You draw them segment by segment, and they host the doors and windows that cut through them. Close a loop of walls and Pascal creates the room’s floor and ceiling for you.

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Draw a wall

Open the Build tab. The Rooms group at the top picks how the wall tool draws, before you start:

• Rectangle — click two opposite corners; the four walls of the room are created together.
• Polygon — click each corner, then the first one again to close. Segments chain, and the draft finishes by itself when you loop back to your starting corner or seal a room against existing walls. Use it for L-shapes and angled rooms.
• Walls — one wall per two clicks; drawing stops after the second click. Close a loop and it still becomes a room; leave it open for partitions.

Press B to open the Build panel with Rectangle armed. With Polygon:

1. Click once to set the first corner.
2. Click each next corner — the sides show as a preview while you draw.
3. Click your first corner again to close the room: all its walls are built at once, as one step you can undo. Press Esc before that and the polygon is dropped — nothing half-drawn stays behind.

The helper panel on the right names the shape in hand (Rectangle room, Polygon room or Walls) and the clicks it takes. To switch shape, pick another tile in the Rooms group. Double-click to end a polygon early and keep what you drew. Esc cancels: with Polygon it drops the unfinished polygon; with Walls it cancels the wall you’re drawing. Wall drawing works the same way in the 3D view and the 2D floor plan — use whichever you prefer.

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Lengths and angles

While you draw, a measurement label floats at the segment’s midpoint showing its live length — in meters, or feet and inches if your scene uses imperial units. Where the draft meets a connected wall, angle arcs and degree labels appear so you can see the corner you’re about to commit. There’s no typed length input during drawing — for an exact figure, place the wall and set its Length in the properties panel afterwards.

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Snapping and alignment

Snapping is an always-visible mode, not a hidden modifier. While the wall tool is active, the helper panel shows a snapping chip — tap Shift (or click the chip) to cycle through the modes:

• Grid — the default. Points snap to the grid lattice. Tap Ctrl to cycle the grid step through 0.5 m, 0.25 m, 0.1 m, and 0.05 m.
• Lines — magnetic snapping to existing walls: endpoints, midpoints, intersections, and wall edges, plus alignment guides to nearby geometry. A beacon marks the point you’re locked onto.
• Angles — locks the segment’s direction to 15° increments.
• Off — nothing snaps; the raw cursor position is used.

Ending a segment on the body of an existing wall splits that wall at the junction — any doors or windows on it stay in place on the correct piece.

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Edit a wall

Select a wall in the 3D view or the floor plan to edit it. Both views offer the same edits:

• Drag an endpoint to reshape the segment. Walls that share the corner follow along, keeping the joint intact — hold Alt while dragging to detach and move only the wall you grabbed.
• Drag the side arrows to slide the whole wall perpendicular to its direction, and the top arrow to change its height directly in the scene.
• Use the properties panel for exact values. The Dimensions section has Length (0.1–20 m), Height (0.1–6 m), Thickness (0.05–1 m), and Curve sliders. New walls default to 2.5 m high and 0.1 m thick.

The Curve control bends the wall into an arc. It’s only available while the wall hosts no doors, windows, or wall-mounted items — openings need a flat wall. Doors and windows are attached to their wall, so they move with it when you drag or reshape it.

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Delete a wall

• Select the wall and press Delete or Backspace.
• Or switch to delete mode with X and click walls to remove them.
• Or use the Delete button in the wall’s action menu.

Deleting a wall also removes the doors and windows placed in it. If the wall was part of a closed room, the auto-generated floor and ceiling update to match.

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Watch it in action

The floor plan and 3D views stay in sync while you draw — this tutorial adds a whole room both ways.