Boundary, entrance & scale

Three things define your site: the boundary (its shape), the entrance (where it meets the road) and the scale (metres per pixel). Get these right and everything else follows.

Draw the boundary

Click Draw site, then click around the edge to place corners. Each click adds a point; the outline follows your cursor. Double-click or press Enter to close the shape; press Esc to cancel. You can drag boundary corners afterwards to adjust.

Finishing the boundary

Three ways, whichever suits: double-click, right-click and choose Finish site boundary, or click the first corner again.

Place the entrance

Click Place entrance and click the point on the boundary where vehicles will enter from the existing road. The generator runs its primary street in from here, so its position shapes the whole layout.

Check the scale

Loading a map or a CAD survey sets the scale for you, so there is usually nothing to do. If you need to change it, Scale (pixels / metre) lives in Algorithm & settings. On a CAD underlay, the 📏 Scale button sets it by measuring: click two points a known distance apart and type the real distance.

Straight edges and square corners

Hold Shift while placing a point and it locks to a horizontal, a vertical or a 45° from the previous one — so a rectangular site, or a straight run along a road frontage, takes clicks rather than aim. A dashed guide shows where the next point will land, with the segment length in metres, and brightens while the lock is holding.

Points also line up with corners you have already drawn. Come close to sharing an edge with any existing corner — on this shape or on anything else on the plan — and the point snaps to it, with a blue guide back to the corner it caught so you can see which one. Holding Shift as well slides the point along the locked direction to where it crosses that line, rather than pulling it off the lock. Turn it off with the Snap control in the top bar.

Both work the same way when you draw a car-park area, a green area, a building keep-out or a water body.

Typing exact dimensions

You do not have to place a point by eye. While you are drawing, just start typing a number — it goes into the length, in metres, and the line locks to it while the direction still follows your mouse. Press Tab to move to the angle — measured the usual way, 0° east and 90° north — and type that too. Enter places the point; Esc drops what you typed and hands the point back to the mouse.

A readout by the cursor shows both figures as you work, with your keystrokes appearing in the box you are typing into. The box you are not typing into keeps following the mouse, and a filled dot marks a figure you have fixed.

So a 30 m edge due north is: type 30, Tab, 90, Enter.

Reshaping something you have already drawn

Right-click a finished site boundary or car-park area and choose Edit. From there the shape is yours to adjust: drag a corner to move it, click an edge to add a corner there, and Alt-click a corner to remove it. The alignment guides and the Shift lock work while you drag, so a corner can be brought back into line with the rest of the scheme rather than eyeballed.