Threshold values used for checking validation properties in Step.
Step files may contain validation properties that are used to check the validity of a CAD model. Those values, once read from the file, are compared with the ones computed by Exchange. Threshold values define the acceptable limit between the read and the computed value.
Two kinds of threshold are used :
Deviation: maximum distance between points (mm)
Percent: maximum difference for real values (%)
(%) Total area of the faces or surfaces the PMI is attached to.
(%) Total curve length of the edges or curves the PMI is attached to.