Joeish W joeish80829@yahoo.com writes:
Lisp code is here https://gist.github.com/W-Net-AI/11205892 ... LCV> (dotimes (ic (vector-rect-size faces)) (setf n (%vector-rect-to-c-array faces)) (rect-x (mem-aref n :pointer ic)))
this is where it fails, rect-x, my Lisp wrapper for C wrapper for the c++ Rect class member x in this statement isn't getting a Rect* so it outputs error: Unhandled ;memory fault at #xC9000000D5. The %vector-rect-to-c-array function is a wrapper for the c function in the posted c/c++ code. It works as expected on everything else but the vector<Rect> output of detectMultiScale.
This fails because `n` is a pointer the data of vector<Rect>. So it points to an array of Rect structures, NOT an array of Rect* (pointers to Rect).
What would work (but I am advising against this), is:
(rect-x (inc-pointer n (* ic SIZE_OF_RECT)))
Where SIZE_OF_RECT is the size of the Rect struct.
What you should do is look into `defcstruct` to properly wrap the Rect struct and start from there.
Wim Oudshoorn.