Here are the classes, structs, unions and interfaces with brief descriptions:

CAfrigisMapSDK	An AfrigisMapSDK object provides an embeddable map interface. You use this class as-is to display map information and to manipulate the map contents from your application. You can centre the map on a given coordinate, specify the size of the area you want to display, and annotate the map with custom information
CAGGeoInformation	AGGeoInformation It will provide current bounding box information
CAGLocalPixelCoordinate2D	AGLocalPixelCoordinate2D struct for local pixel coordinate
CAGLocationCoordinate2D	AGLocationCoordinate2D struct for latitude and longitude
CAGMapViewDelegate	The AGMapViewDelegate defines a set of optional methods that you can use to receive map related update messages
CAGOffsetInPixel	AGOffsetInPixel Move offset pixel to draw annotation item
CAGRange	Private
CAGVertex	Private
CAnnotationView	View responsible for presenting annotations visually in map. Annotation view are loosely coupled to a corresponding annotation object, which is an object that corresponds to the Item interface. When an annotation’s coordinate point is in the visible region, the annotation view will draw the annotation item
CCircleItem	Annotation Item object representing a circular area on map. This class manages the data that defines the area and handles the drawing of the circular area on a map
CImageItem	Annotation Item object representing a rectangle area on map which is filled with provided image. This class manages the data that defines the area and handles the drawing of the rectangle area on a map which is filled with provided image
CItem	Item interface that need to be implemented by all annotation item object. Currently CircleItem, ImageItem and PolylineItem are using this interface
COpenGLView	Private
CPolylineItem	Annotation Item object representing a poly-line (example: route) on map. This class manages the data that defines the area and handles the drawing of the poly-line on a map