GMS:TIN Commands

When the TIN module is active, the following commands can be found in the TIN menu:

• New TIN...

Creates a new TIN and opens the TIN Properties dialog.

• Lock All Vertices

Since it is possible to accidentally drag points, vertices can be "locked" to prevent them from being dragged or edited by toggling on this command.

• TIN Settings...

Opens the Preferences dialog to the settings affecting TINs.

• Triangulate

Creates triangles from existing vertices on the active TIN using the Delauney criteria. If triangles already exist, they will be deleted.

• Subdivide TIN...

Opens the Subdivision Factor dialog letting the user enter a factor by which existing triangles will be split into smaller triangles.

• TIN → 2D Scatter Points

Creates a new 2D Scatter Point set from the vertices of the active TIN. The scatter points could then be used for interpolation.

• TIN → 2D Mesh

Creates a new 2D mesh from the active TIN, preserving the triangles.

• Fill Between TINs → 3D Mesh

Creates a 3D mesh, or adds onto an existing 3D mesh, by filling in the space between two TINs. A 2D mesh must exist and is used as a projection mesh for the 3D elements. Two TINs must be selected.

• Horizons → Solids...

Opens the Horizons to Solids wizard which can be used to create solids from a combination of boreholes, TINs and conceptual models.

• Horizons → 3D Mesh...

Opens the Horizons to Mesh wizard which can be used to create a 3D mesh from a combination of boreholes, TINs and conceptual models.

• TIN Boundary → Polygons

Creates a new coverage containing a polygon derived from the outer boundary of the TIN.

• TIN Thiessen → Polygons

Creates a new coverage containing polygons derived from the thiessen polygons of the TIN.

• TIN Contours → Arcs

Creates a new coverage containing feature arcs derived from the linear contours displayed on the TIN.

• Vertex Strings → Arcs

Creates a new coverage containing a feature arc derived from the vertex string on the TIN (if one exists).

• TIN → Extruded Solid

Opens the Extrude/Offset Tin → Solid dialog which is used to extrude the TIN vertically up or down to form a solid.

• Fill Between TINs → Solid

Creates a solid by extruding one or more TINs to a base elevation and then performing a set operation to remove the solid portions outside the TINs.

• Add Breakline(s)

Inserts edges into the TIN from a defined breakline, splitting or swapping triangles as necessary.

• Select Boundary Triangles

Selects triangles on the outer boundary which meet the "long and thin" criteria specified in TIN settings.

• Snap Vertices to TIN

Given some selected vertices, moves them so that they are on the surface of a TIN selected from a dialog.

• Intersect TINs

Displays the intersection line between two selected TIN surfaces (if they intersect).

• Horizons → HUF

Opens the Horizons → HUF wizard to create MODFLOW HUF data from TINs and boreholes. TINs or boreholes with horizon data defined are required, along with a MODFLOW simulation which uses the HUF package.