I'm writing a macro to extract the bounding box of a detail callout. I used the "Named Boundary from Drawing Boundary" tool to place a named boundary and create a drawing. I'm using the stock DrawingSeed.dgnlib metric file:
Then I open the reference dialog in the sheet model and see two rectangles:
1. The callout clipping region (inner rectangle) which aligns with the original named boundary placed in the design model.
2. The "photo corner" box (outer rectangle) which is offset from the callout rectangle and is the associated saved view boundary.
The reference boundary (dashed purple) in the sheet model aligns with the "photo corner" rectangle rather than the actual clip rectangle. If I programatically try and access the reference clip I get the outer rectangle coordinates and not the clip element (inner rectangle) coordinates.