If you don't select a feature, and you type in a rotation Offset angle value, PC-DMIS follows the right-hand rule of rotation. PC-DMIS follows the convention to treat both the negative and positive axes as positive. This means PC-DMIS always rotates about the XPLUS, YPLUS, or YPLUS axis. It does this even if you select XMINUS, YMINUS, or ZMINUS. Positive offset angle values go in the positive direction (counter-clockwise), and negative values go in the negative direction (clockwise). The software enables the Rotate to list when you select a feature that controls an axis that matches the vector of the selected feature.
Note: This is a direct copy and paste. I think the second YPLUS listed is a typo and meant to say ZPLUS.
If you don't select a feature, and you type in a rotation Offset angle value, PC-DMIS follows the right-hand rule of rotation. PC-DMIS follows the convention to treat both the negative and positive axes as positive. This means PC-DMIS always rotates about the XPLUS, YPLUS, or YPLUS axis. It does this even if you select XMINUS, YMINUS, or ZMINUS. Positive offset angle values go in the positive direction (counter-clockwise), and negative values go in the negative direction (clockwise). The software enables the Rotate to list when you select a feature that controls an axis that matches the vector of the selected feature.
Note: This is a direct copy and paste. I think the second YPLUS listed is a typo and meant to say ZPLUS.
If you rotate to a feature, "about XPLUS/ about XMINUS" are identical, since the feature has its own vector.
So why not eliminate all the "MINUS" axis' altogether?
