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Definition of the membership sets for each axis.
| Label | V1 | V2 | V3 | V4 |
|---|---|---|---|---|
| Negative difference | −90° | −90° | Min. axis value − axisDifference | Min. axis value |
| Stable difference | Min. axis value − axisDifference | Min. axis value | Max. axis value | Max. axis value + axisDifference |
| Positive difference | Max. axis value | Max. axis value + axisDifference | 90° | 90° |
