pointers

Hello all, is there a way to find out if a circle ( a point with a radius ) overlaps with any of the polygons in a KMZ/KML file? many thanks.

I'm trying to wrap a pn532 library and not sure how to handle a pointer to a byte. This method is suppose to provide the uid length when called so it needs to stay a pointer. The original library method is the following. bool readPassiveTargetID(uint8_t cardbaudrate, uint8_t * uid, uint8_t *...