Terrain

Inserts a terrain by lifting a surface from:

  • contour lines
  • 3d curves
  • point clouds

Lands uses a popular terrain generation algorithm based on Delaunay Triangulation.

You can either build the surface of the terrain using the triangulation faces directly or adjust a grid to the form obtained after the triangulation process, with the purpose of obtaining a smooth surface.

When smoothing the surface with a grid, you can control the resolution of the grid, indicating the size of its cells, as such as smoothness and simplification parameters.

Boundary

Specifies a closed boundary to define the terrain boundary.

When the Delaunay triangulation algorithm is used without a grid, the limits of the terrain surface correspond to those of the triangulation obtained.

When the terrain is generated by lifting the grid points, the limits of the terrain surface will be determined by the minimum rectangle that contains the plan projection of all input curves and points.

However, the landscaping project will require terrains with an arbitrary boundary. Lands responds to this need by allowing the selection of a curve that represents the boundary of the terrain in the plan view.

Cut and fill

Generates cut and fills in the terrain.

A cut and fill is an earthwork over the terrain, with the purpose of creating an embankment or similar structure. Lands generates cut and fills from a closed curve, any type, that marks the area and elevation.

A slope angle can be indicated for cut and fills. This angle determines the quantity of soil removed from the top part of the cut and fills and the quantity of soil added to the lower part.

Gap

Gaps are perforations on the terrain used to insert a swimming pool, pond, lake, etc.

Lands gaps are calculated from any type of closed curve, which will be used to mark the area removed. The height of the curve will determine the depth of the hole.

Division

Divides a terrain generated with the Terrain command.

When you are working on a terrain, you frequently use more than one material, to differentiate areas with different functions.

Lands can divide the terrain in two parts, using any type of closed curve.

Once a terrain has been divided, you can still subdivide it as times as needed by using different division curves.

Google Earth Import

Imports elevation data from Google Earth.

Often the user can not dispose of the topographic data of the terrain on which is going to work.

Lands makes it possible to obtain the elevation data directly from the Google Earth window.

Lands performs a scan of the elevation with respects to sea level of the terrain surface visible on Google Earth window and generates a representation based on section curves.

These 3d curves can be used in the Lands terrain modeling functions so that a true surface can be generated using Google Earth, and cuts and fills, and other earthworks can be carried out.