GHS Geometry (.gf, .gft) import/export

GHS geometry (.gf and .gft) files are used to analyze floating vessels (boats, ships, docks).

Import

To open, import, insert, and attach a file as a worksession

From the File menu, click Open, Insert, Import, or Worksession > Attach.
In the dialog box, select a supported file type.
Click Open and configure the settings.
When you open a non-3dm file and save the model, its filename will be the default 3dm filename.

Style

Mesh

Import the data in the geometry file as a set of meshes.

Body View

Generate 2-D body sections.

Plan View

Generate a 2-D plan (top down) view.

Profile View

Generate a 2-D profile (from side) view.

Wire Frame

Generate 3-D polylines from data in the geometry file.

Attach GHS Data to Meshes

Add GHS geometry file information to the meshes generated on import. This includes all of the hull and tank information (contents, permeability, sounding tubes). This is the same information embedded with the AttachGHSData command.

This is an option only available with the Mesh import option. Using the other modes will contain only the geometry, not the GHS data.

Remove collinear points

Simplify imported polylines by removing collinear points. If three point along a station all lay on the same line, the middle point will be removed.

When a GHS file is imported using the mesh option, it is possible that the mesh may not have the exactly correct join information. You can edit the mesh with the mesh editing commands.

Always use these settings. Do not show this dialog again.

Export

Before saving a GHS Geometry file, GHS data needs to be associated the surfaces or meshes through the AttachGHSData command.

To save as or export a Rhino model

On the File menu, click Export Selected or Save As.
In the dialog box, the Files of type list displays the currently supported file types for export.
In the Files of type box, select the supported file type.
In the File name box, select or type a file name.
Specify what is to be saved.

Options
Save small	Though clearing the render meshes makes the file smaller, it will shade and render more slowly the next time you open the file.
Save geometry only	Saves geometry objects only. No layers, materials, properties, notes, or units settings are saved. This is similar to exporting the objects. A new file is made, but it does not become your active Rhino model.
Save textures	Embeds external textures used by materials, environments and decals into the model.
Save plugin data	Saves data attached to objects or the document by plug-in applications.

If the export can be configured, click the Options button to specify export settings.
If the file type creates only mesh objects, in the Polygon Mesh Objects dialog box, specify the mesh settings.