Edit Area toolbox
The tools in the Edit Area toolbox are used to modify surface model points or triangles inside or outside an area. The area is defined by a fence or a shape element. Valid element types include shapes, complex shapes and ellipses.

To |
Use Tool |
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Flatten points to a fixed elevation |
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Raise / lower points by a vertical distance |
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Drop / lift points to follow another surface |
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Exclude triangles |
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Insert elements as internal hole boundaries |
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Remove points from the model |
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These tools considers the area boundary usually as a two-dimensional boundary. The Z coordinates of both, boundary vertices and surface model points are ignored when deciding what points are inside or outside the area.