Rotated detector pixel offset based on the starting position.

[YooSunYoung]

We were assuming the first pixel is always at (0,0,0) but it was not the case.

I added this to be included.

I didn't clean up the code or write more tests because this geometry parsing will be obsolete soon.

[jokasimr]

Are the position_offset vectors the offsets of the pixels from the origin of the detector coordinate system? In that case, should they not be rotated with the detector?

Is the detector rotation matrix a rotation around the detectors own axis, or a rotation of the detector around the sample?

[jokasimr]

@SimonHeybrock suggested merging this even if there are some question marks since it's mainly for testing anyway.

[YooSunYoung]

Are the position_offset vectors the offsets of the pixels from the origin of the detector coordinate system? In that case, should they not be rotated with the detector?

Yes. position_offset is not rotated.

Is the detector rotation matrix a rotation around the detectors own axis, or a rotation of the detector around the sample?

It's a rotation around the detector's own axis.