Digital surface model

You can use a Digital Surface Model (DSM) to adjust with high precission the characteristics of your 3D designs.

Since DSM sources are based on LiDAR data or machine-learning methods for reconstruction from aerial images, they typically allow you to adjust heights with less than a 10 cm error and angles with less than 0.2 degrees error.

This feature depends on the availability of DSM data for each specific location. If your current project has DSM data available, you will be able to see a drop-down selector under the "View" section (in the top-left menu of the editor):

The drop-down selector shows the list of DSM sources available for your project. After selecting one of them you will be able to see the DSM point cloud, representing the position of roofs, obstacles, trees and the ground in the 3D space:

Since the DSM point cloud and the aerial image com from different sources, they may have some displacement. To align them, you can use the X, Y and Z adjust controllers (X and Y for the horizontal alignment with the aerial image and Z for the vertical alignment with the floor reference):

Once you have the DSM aligned, you can draw or select any object on your design and adjust its characteristics to better match with the DSM reference.

The best fit occurs when all the MDS points intersect with the objects:

Avoiding too many points being covered by the object:

Or too many points without any intersection with the object: