How do you flip the normal direction of a surface body via SpaceClaim scripting?

In SpaceClaim and Discovery the normal of a solid body is always "out" of the solid. For surface bodies the connected faces should always have consistent normal direction, but this direction can be flipped. In the interface you can flip the normal direction by using the tool in Measure - Quality - Normal, selecting a face and right-clicking and selecting "Reverse Face Normal". How can this be done via scripting?

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Accepted answers

Andrew Stankovich

In SpaceClaim and Discovery API there is no direct API to perform this action, but you can use the Command method to call the same functions as the UI. See the process below based on some "Face" in the model defined as an IDesignFace.

from SpaceClaim.Api.V22 import Command #or whatever version of the API you are using.
Selection.Create(Face).SetActive()
Command.Execute("AnalysisNormal")
Command.Execute("ReverseFaceNormal")

All comments

Andrew Stankovich

from SpaceClaim.Api.V22 import Command #or whatever version of the API you are using.
Selection.Create(Face).SetActive()
Command.Execute("AnalysisNormal")
Command.Execute("ReverseFaceNormal")

Abhijith Rajan

Try using the following command to reverse the surface normal of an independent surface body.

[IdesignBody].GetMaster().Shape.Reverse()
eg, GetRootPart().Bodies[0].Faces[0].Parent.GetMaster().Shape.Reverse()

The reverse normal would work either on the entire body together or on a surface only if is detached from the body and is an independent surface body.

NickFL

@Abhijith Rajan said:
Try using the following command to reverse the surface normal of an independent surface body.

[IdesignBody].GetMaster().Shape.Reverse()
eg, GetRootPart().Bodies[0].Faces[0].Parent.GetMaster().Shape.Reverse()

The reverse normal would work either on the entire body together or on a surface only if is detached from the body and is an independent surface body.

Thank you this is very helpful. Is there a way that I can set the normal direction using a user-defined direction (not knowing which normal Spaceclaim will assign when it intially creates the object)? Of course I would be sure this direction vector is normal to the face.