Aligning Terrains to ShapesTerrains can be aligned to shapes by using the Align Terrain tool. In order to run the tool, select some shapes and choose . The following dialog is shown:
This tool aligns one or all terrains to all shapes currently selected.
|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 are approximately calculated. The values are written into the object attributes (fields "cutVolume" and "fillVolume").|
Resetting TerrainsTerrains can be reset by using the Reset Terrain tool. Choose . The following dialog is shown:
Reset means restoring the original height defined by the elevation attribute of the terrain layer.
|Terrain||The terrain which should be reset or All.|
|Constraint||If set to Everywhere, terrains are completely reset. If set to Inside selected shapes only, only the terrain vertices intersecting the currently selected shapes are reset.|
|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.
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