# Region3D

The Region3D function Functions are tools that are available in Spreadsheet for processing and analyzing acquisitions or other results. You can add functions to your Spreadsheet job to create tool chains and produce results for specific applications. allows you to create a fixtured 3D region in the shape of an annular cylinder slice. The function returns a Region3D structure containing the settings of the fixtured 3D region. The EditRegion3D, Region3DFromRegion2D, and CompRegion3DFromCompRegion2D functions also return a Region3D structure.

The shape returned by the Region3D function is designed specifically to support the ExtractCircle3D and ExtractRadialCrossSections3D functions, which require this shape as input. However, you can use the output of this function with any tool that requires a Region3D input.

For 3D tools that require a Box3D input, you can use the GetBoundingBox function on the Region3D output to get a Box3D structure that fits the Region3D shape. Region3D is equivalent to a Box when the value of the Curve parameter is 0.

The following diagrams show an annular cylinder slice, a shape produced by the Region3D function, placed in a coordinate system:

Top View | Side View | Isometric View