public static extern void vtsCallbacksCameraProj(IntPtr map, vtsCameraOverrideCallbackType callback);
public static extern void vtsCallbacksCameraFovAspectNearFar(IntPtr map, vtsCameraOverrideCallbackType callback);
public static extern void vtsCallbacksCameraProj(IntPtr map, vtsCameraOverrideCallbackType callback);
public static extern void vtsCallbacksCameraFovAspectNearFar(IntPtr map, vtsCameraOverrideCallbackType callback);