Select
Selects an existing geometric construction object, such as a curve or surface, to edit or delete.
Add
Selects geometry that defines a new geometric construction. This option is used with the numbered step options listed below.
Delete
Deletes a selected geometric construction.
Cancel
Cancels the macro, closes the geometric construction ribbon and the Geometric Construction Palette dialog box, and then returns to the main command ribbon.
Close
Verifies the validity of values selected for the options, closes the geometric construction ribbon and the Geometric Construction Palette dialog box, and then returns to the main command ribbon. The selected values are still available when you click again on the main command ribbon.
Geometric Construction
Displays the current geometric construction interface. You can also select:

A different, recentlyused interface.

More  Opens the Select Geometric Construction dialog box. For a new geometric construction, all interfaces delivered with the software are available. For an existing geometric construction, only similar interface types are available.
Geometric constructions displaying only in the Select Geometric Construction dialog box are not intended for general usage. You should first consult your Intergraph support representative before using these geometric constructions.
1
Specifies the coordinate system. The coordinate system is used when there is an ambiguous solution.
2
Specifies the surface. By default, this is the surface of the plate selected for the main command.
3
Specifies a reference plane intersecting the surface or a curve or point used to define the plane. The curve created by this intersection is the reference curve from which the new point is offset as defined by Offset and Offset Direction.
Specifies a point used to define the plane intersecting the surface. This option is only available if a point or curve is selected for 3.
Specifies a third point used to define the plane intersecting the surface. This option is only available if points are selected for 3 and .
6
Specifies a supporting plane intersecting the surface or a curve or point used to define the plane. The curve created by this intersection is the supporting curve along which the new point is located as defined by Distance and Distance Method.
Reject
Clears the selections for the current step.
Accept
Accepts the current selections and displays a preview.
Continue
Completes the geometric construction definition. The ribbon continues to display so that you can define parameters for additional geometry.
The geometric constructions are not created and saved to the model until you click Finish on the main command ribbon to create the model object.
Offset
Defines the offset distance of the point along the reference curve.
Offset Direction
Defines the offset direction (with respect to the selected coordinate system 1) along the reference curve. Select +x, x, +y, y, +z, or z. This option is available when Offset is set to a value other than 0.
Inter Ambiguity
Specifies the solution when the supporting plane intersects a complex surface in multiple locations. Select +x, x, +y, y, +z, or z. The following example shows the ambiguity options in the bow of a hull.
Distance
Defines the distance of the point from the reference curve along the supporting curve.
Distance Method
Defines how the point is measured along the supporting curve. Select Girth, Along x, Along y, or Along z.
Point Ambiguity
Specifies the solution along the supporting curve when Distance is not 0 and Girth is selected as Distance Method. Select +x, x, +y, y, +z, or z. This option is available for Girth.
Distance Direction
Specifies the solution along the supporting curve when Distance is not 0 and Along x, Along y, or Along z is selected as Distance Method. Select +x, x, +y, y, +z, or z. This option is available for Along x, Along y, or Along z.
Side Ambiguity
Specifies the solution when the reference plane intersects a complex surface in more than one location, such as on the port and starboard sides of a hull. Select +x, x, +y, y, +z, or z.
For options that have coordinate axis values, select a value that is compatible with the orientation of the curve. For example, if a nonlinear reference curve is in the xy plane, valid options for Offset Direction are +x, x, +y, and y.