Gepard evaluation; fibre shapes dimensions unchangable

When a particle is detected as a certain shape which is manually changed by the expert to another shape, the particles dimensions should be re-calculated accordingly. This works fine for irregulars/spheres/flakes which are changed to fibres. However, if one wants to change the shape back to another category (e.g. irregular, spherule, ..), the fibre dimensions are kept, even though the shape category changes. The same applies when particles are initially detected as fibres, here changing the shape, does not initiate a recalculation of the dimensions (based on the ellipsoid).

Example Picture: showing fibre that is changed to irregular, but fibre dimensions are kept. This applies for any particle, whether it is an obvious fibrous shape or not.