Editing Terrain Objects

Any time elevation data is changed, the terrain must be regenerated. This occurs automatically when a 3D view is open. It can also be done manually by selecting Terrain> Build Terrain .

Edit Handles for Terrain Objects

The shape of the terrain perimeter can be edited like a CAD polyline in floor plan view and 3D views. See "Editing Closed-Polyline Based Objects".

An elevation point can be moved in floor plan view using the center edit handle.

Elevation Lines

and Elevation Splines

and Terrain Breaks

are edited like lines and splines. Elevation lines can be connected into polylines. You should be familiar with editing these types of objects before spending too much time modeling terrain. See "Line Tools", "Polylines", and "Splines".

The shape of a Raised Region

, Lowered Region

, Hill

, Valley

, or Flat Region

can be edited like a normal polyline. See "Polylines".

Terrain features are edited just like standard lines, splines, and polylines. See "Editing Objects".

Opening Terrain Objects for Specification

Select Terrain> Terrain Specification...

or select the terrain perimeter and click the Open Object

edit button to open the Terrain Specification dialog. Here you can control many of the variables that determine how the terrain is modeled, as well as how the terrain perimeter displays in floor plan view. See "Terrain Specification Dialog".

The Elevation Point Specification dialog is used to assign height values and provides a more accurate method for relocating elevation points. See "Elevation Point Specification Dialog".

The Elevation Line Specification dialog is used to assign height values. You can also to change the way elevation lines and splines display in floor plan view. See "Elevation Line Specification Dialog".

Use the Terrain Feature Specification dialog to assign different height values, control how terrain features display in floor plan view, and select the material that is applied to the terrain feature in 3D views. See "Terrain Feature Specification Dialog".

Terrain objects created with the Terrain Modifier

tools can be selected and opened for specification. The Raised / Lowered Region Specification, the Hill / Valley Specification, and the Flat Region Specification dialogs contain area information for the polyline and control the relative height of the terrain object and how it displays in floor plan view. See "Hill / Valley Specification Dialog".

Edit Toolbar Buttons for Terrain Objects

Depending on the type of terrain object selected, a variety of edit toolbar buttons are available on the edit toolbar. The edit toolbar buttons for terrain objects are the same as those available for CAD objects. For more information about the edit toolbar buttons, see "Edit Toolbar Buttons".

If you click the Delete

edit button when the terrain perimeter is selected, you delete all terrain objects.

There are a few different tools and techniques available for copying and replicating terrain objects. For a complete description, see "Copying and Pasting Objects".


Note: If you copy from one plan to another, you cannot view the pasted objects in 3D unless a terrain perimeter exists.

Use the Polyline Subtract tool to create holes in terrain features. When this method is used the underlying terrain, or whatever lies beneath the terrain feature defines the height and material of the hole. See "Subtract".

Moving Terrain Objects Using Dimensions

If dimensions display when a terrain object is selected, the object can be moved using the Move Object Using Dimension dialog. For more information see "Moving Objects Using Dimensions".