Fit underlay

Fits an underlay to the model step by step: scale, across, straighten, position. It starts by itself after an import.

How it works

1. Scale: click both ends of a distance you know on the picture, such as an outer wall, then type the real distance in mm.
2. Across: if the scan is stretched, measure a second distance across the first in the same way. Otherwise press Enter to skip it.
3. Straighten: click two points along a wall on the picture. The picture turns so that the wall lies on the nearest axis.
4. Position: click a point on the picture, such as a building corner, then click where it belongs in the model, or type it as x,y. The tool ends.