You can also use wireframe CAD data to generate a circular scan.
To generate a circle:
Click near the desired wire on the circle. PC-DMIS highlights the selected wire.
Verify that the correct feature has been selected.
The BASICSCAN dialog box (Insert | Scan | Circle) displays the values of the selected circle's center point and diameter once the wire has been indicated.
If the underlying CAD element is not a circle or an arc, additional clicks may be necessary to identify the feature. If PC-DMIS does not highlight the correct feature, try to click on at least two additional points near the circle.
The CutVec is taken from the plane in which the circle lies. This comes from the wireframe CAD model.
The InitVec is arbitrarily
set from the wireframe CAD model. If the circle lies in the Y or Z
plane, it is -X if it is an inner circle. It is +X if it is an outer
circle.
If the circle lies in the X plane, it is +Z if it is an inner circle.
It is -Z if it is an outer circle.
For more information about the BASICSCAN dialog box and the circle basic scan, see "Performing a Circle Basic Scan".