>>>>> On Tue, 22 Oct 2013 15:48:50 -0700 (PDT), Joeish W said: > > take this for instance > > CvPoint points[2]; > > > id like to be able to cast points[2] to the CvPoint struct more info here > http://docs.opencv.org/modules/core/doc/old_basic_structures.html?highlight=cvpoint#CvPoint > > > here is my struct which works for other things > > > > ;; (cffi:foreign-type-size '(:struct cv-point)) = 8 > (cffi:defcstruct cv-point > (x :int) > (y :int)) > > > put in a defparameter you cant just go > > (defparameter points (cffi:foreign-alloc :int :count 2)) > > (defparameter a ((:struct cv-point) points)) > > > you get an illegal function call error...any help is appreciated
Your example is inconsistent -- in C, your points variable is an array of two CvPoints, but in Lisp it is an array of two ints. What are you really trying to do? I suggest you post the C code that you are trying to convert. The opencv doc for CvPoint doesn't use casting or arrays of ints. __Martin
