#define MPP_TO_ALTI 0.7134044
#define VIK_DEFAULT_ALTITUDE 0.0
+#define VIK_DEFAULT_DOP 0.0
#define VIK_GTK_WINDOW_FROM_WIDGET(x) GTK_WINDOW(gtk_widget_get_toplevel(GTK_WIDGET(x)))
#define VIK_GTK_WINDOW_FROM_LAYER(x) VIK_GTK_WINDOW_FROM_WIDGET(VIK_LAYER(x)->vt)