Best Symmetry Plane
This command computes the best symmetry plane from the input object.
Requirements
Select the object (mesh or cloud) on which you want to compute a best symmetry plane and an initial plane. Then, launch the command.
Optionally, define some constraints for the best symmetry plane.
If you do not define any constraints, the input plane is used as an initialization for the output plane calculation.
If you define constraints, you can choose to:
constraint the center of the input plane so that it does not move: the output plane will pass through this point
keep the orientation of the plane X axis (refer to the reference frame displayed on the input plane to see which axis will be kept). This option is interesting, for example, if a vertical plane is requested.
keep the orientation of the plane Y axis (same as the Y axis but with a perpendicular axis)
disable rotations: the output plane will be parallel to the input plane
Notes
The input plane must be close to the output expected symmetry plane.
Technical information
Fig. Best symmetry plane of a pelton wheel
Practise
See Reverse Engineering of a Pelton Wheel - Part One: Alignment in the practical exercises.