Face Orientation Parameters

  The information in this section will help you check the orientation of faces by colors and
eventually re-orient faces to be used in the Join action afterwards.
More Operating Mode information is available in the Face Orientation Basic Task.

Main dialog box


While Moving

Updates the display of the orientation of the faces while the object selected is moved.
This check box is not selected by default.

Direction Locked

Enables you to navigate into the model without modifying the display of the orientations
when the screen direction is modified.
This check box is not selected by default.

Fly Analysis

Available only if the Direction Locked check box is selected.
Displays an arrow under the pointer, identifying the normal to the face at the pointer location
while you move the pointer over the face.
Furthermore, circles are displayed indicating the plane tangent to the face at this point.


Opens a dialog box to invert the orientation of one or several faces.


The orientation of the faces is computed with respect to the normal to the screen.
Faces are displayed as facets.
One face may be made of several facets, that have not necessarily the same orientation.
This number depending on the orientation of the model.
Statistics displays the number of facets found in each orientation direction.
Those facets are displayed in two different colors.
Double-click the color patch to change this color in the color editor.


Displays the three axes of the current view direction and the number of faces displayed.

Face Invert Orientation dialog box


Lists the elements selected for re-orientation.
In the Manual mode, you can edit the list of elements to be inverted:

  • by selecting elements in the geometry:
  • when you select an unlisted element, it is added to the list
  • when you select a listed element, it is removed from the list
  • when you select an unlisted element, it is added to the list
  • when you select a listed element, it remains in the list
  • when you select an unlisted element, the list is unchanged
  • when you select a listed element, it removed from the list

If you double-click Add Mode or Remove Mode, the chosen mode is permanent,
i.e. successively selecting elements will add/remove them.
However, if you click only once, only the next selected element is added or removed.

You only have to click the button again, or click another one, to deactivate the mode.

  • by selecting an element in the list then using the Clear Selection contextual menu item to remove it from the list.

In Automatic mode, once the reference element has been selected, the faces to re-orient are listed automatically.
This list can not be edited.

Only faces displayed with the Face Orientation command can be selected.


Proposes two invert orientation modes:

  • Manual: you select the face(s) to re-orient.
  • Automatic: you select a Reference element that defines the faces to re-orient.


Available for the automatic mode only.


The name of the face selected as reference appears in this field.
If you want to change that reference, place the cursor in this box and select another face in the graphic area.

Search distance

Defines the domain in which the action searches edges that might be merged.
The higher the search distance, the higher the number of candidate edges.

Connection distance

Distance below which two elements are considered as identical.
Search distance and Connection distance aim at defining a single connex domain.
You can use the Surface Connection Checker to determine those distances.


Used for the automatic mode.
This field displays information on the number of connex domains found.
If there are several, only the one containing the reference element will be processed.
Use the Search distance and the Connection distance above to obtain only one domain.