Several questions on filtering for intersecting elements came up recently.
It is pretty easy as long as a bounding box can be used.
However, the bounding box is generally aligned with the cardinal X, Y and Z axes.
If the containing volume of interest is not, too many elements may be selected
– Family instances in a diagonal room
– Conduits intersecting a junction box
– Generate 2D arc from radius, start and end points...
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