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.

Mark the entrance

Click 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.

Set the scale

If you started from the map, the scale is already correct. If you traced a survey image, click Calibrate, then click two points a known distance apart and type the real distance. You can also type a value directly into the scale (metres-per-pixel) box.