The Align terrain to shapes tool 
aligns terrains to selected shapes.
To align terrain to shapes, click the Align terrain to shapes tool or click Terrains > Align terrain to shapes in the main menu.
Note:
The Align terrain to shapes tool aligns one or all terrains to the shapes currently selected.
Tool settings
The Align terrain to shapes tool has the following options:
Terrain | The terrain which should be aligned or All. |
Raise terrain | If enabled, terrain vertices below selected shapes are aligned. |
Maximal raise distance | If distance between terrain and shape is smaller, terrain vertices below shape are raised. |
Lower terrain | If enabled, terrain vertices above selected shapes are aligned. |
Maximal lower distance | If distance between terrain and shape is smaller, terrain vertices above shape are lowered. |
Add border | If enabled, a small border region around the shapes is aligned, too. |
Write cut/fill volumes to attributes | If enabled, for each selected shape cut/fill volumes in cubic meters are approximately calculated. The values are written into the object attributes (fields "cutVolume" and "fillVolume"). |
Elevation Delta Maps
When aligning terrains, the original heightmap of the terrain is not modified. The elevation data is stored as a separate image file in a subfolder (named after the CityEngine scene) in the project's data folder. These files and folders should not be renamed or deleted. If required, however, you can modify the elevation delta image file with an image processing tool (e.g. apply blurring) and store it under the same name.
Tip:
Use the Align terrain to shapes tool in conjunction with the interactive editing tools.