This tab manages the triangles that form the surface.

In the menu at the top of the grid, two options are different from some of the similar tabs:

It is possible to filter the triangles found in the table. For instance, you might decide to display only the triangles selected on the screen, those that are within a particular point's radius, those with a particular elevation, etc.

Civil Surfaces Triangles2.png

It is possible to show or hide the coordinates of the points that delimit the triangles.

Civil Surfaces Triangles3.png

The options in the contextual menu are explained here:

Pop-up menu	Description
Select all	Select all the triangles in the table.
Clear selection	Unselect all triangles checked in the table.
Draw selected	Draw the selected triangle.
Erase selected	Erase the selected triangle.
Draw all	Draw all the filtered triangles.
Erase all	Erase the drawing of all the filtered triangles.
Expand	Show the coordinates of the triangles' points.
Collapse	Hide the coordinates of the triangles' points.
Delete all	Delete all triangles.
Area calculation	Calculate the area of all the filtered triangles. This option generates a report that can be saved in text format.

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