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Computes the orientation of a region as an angle of value in range 0.0 - 180.0.

Name Type Description
inRegion Region Input region
outOrientationAngle Real


Region orientation can be thought of as the direction in which the region is oriented. Mathematically it is the angle between X-axis and the line passing through the region mass center, that rotation around this line produces the smallest torque.


  • If the input region is not guaranteed to be non-empty, precede this filter with SkipEmptyRegion.


Orientation of the sample region equals to 53.496, which is visualized on the second image by drawing the line of this orientation passing through the region mass center.


This filter can throw an exception to report error. Read how to deal with errors in Error Handling.

List of possible exceptions:

Error type Description
DomainError Empty region on input in RegionOrientation.

Complexity Level

This filter is available on Basic Complexity Level.

See Also

  • ShapeOrientation – Computes the shape orientation as angle with value in range 0.0 - 180.0.