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How do i change local axis to world axis?

Anonymous's picture
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Dear Sir!

I open the step and iges file.

The file is assmembly data.

Then I seleted the some face.

And I gained the normal of face.

but Normal vector itself is based on local axis.

But I would liked to gain face normal of world axis.

So i have to change local axis to world axis. How do i can ?

Help me..

thanks..

rla dndwn's picture

I think that you extracted stored geom_surface from topods_face.

Extract tranformed geom_surface and use 'GeomLProp_SLProps(Geom_Surface)' or Directly use 'BRepLProp_SLProps (BRepAdaptor_Surface) '

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