Autodesk Design Suite 3D - Planix Home Design Suite 3D Servisní příručka stáhnout pdf (Strana 188)

Chapter 5 Working with Surfaces

182

Creating Boundaries to Use in

Surface Generation

Boundaries can help eliminate certain surface editing tasks.

■

Boundaries control how the surface TIN lines extend to the

surface’s outer limits.

■

Boundaries mask internal areas of the surface to prevent

triangulation from occurring.

For example, if a pond exists on the surface, you can either build the

surface and then delete the triangulation lines that cross the pond, or

you can create a boundary around the pond before building the

surface so that the area of the pond is not triangulated. The same

applies to outer surface boundary lines—you can either delete the TIN

lines that extend beyond the survey limits after you build the surface,

or you can create a boundary around the survey limits before building

the surface to prevent the lines from being created in the first place.

Boundaries can clip the surface lines that cross the boundary, or they

can act like non-destructive breaklines, as shown in the following

illustration.

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Autodesk Design Suite 3D - Planix Home Design Suite 3D Servisní příručka Strana 188