Terrains can be aligned to shapes by using the Align Terrain tool 
. You can select shapes and access the tool the following ways:
- Click the Align Terrain tool .
- Click Layer > Align Terrain in the main menu.
Note:
The Align Terrain tool aligns one or all terrains to the shapes currently selected.
Tool settings
The Align Terrain tool has the following parameters:
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"). |
Resetting terrains
Terrains can be reset by using the Reset Terrain tool. Click Layer > Reset Terrain.
Note:
Reset means restoring the original height defined by the elevation attribute of the terrain layer.
Reset settings
Terrain | The terrain which should be reset or All. |
Constraint |
|
Add border | If enabled, a small border region around the shapes is reset, too. Only meaningful if Constraint is set to Inside selected shapes only. |
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.