added land

api/app/services/link.py

@@ -1,19 +1,29 @@
-from app.core.geo import GeoPoint
+from app.core.geo import GeoPoint, sample_path
 from app.core.propagation import manual_link_budget
 from app.models.link import LinkBudgetRequest, LinkBudgetResponse
+from app.services.vegetation import vegetation_loss_along
 
 
 def link_budget(request: LinkBudgetRequest) -> LinkBudgetResponse:
     if request.model != "manual":
         raise NotImplementedError(f"{request.model} link model is implemented in a later stage")
 
+    tx = GeoPoint(lat=request.tx.lat, lon=request.tx.lon)
+    rx = GeoPoint(lat=request.rx.lat, lon=request.rx.lon)
+    points = sample_path(tx, rx, 256)
+    vegetation_db = vegetation_loss_along(
+        points,
+        freq_hz=request.frequency_mhz * 1_000_000,
+        include_vegetation=request.include_vegetation,
+    )
     budget = manual_link_budget(
-        tx=GeoPoint(lat=request.tx.lat, lon=request.tx.lon),
-        rx=GeoPoint(lat=request.rx.lat, lon=request.rx.lon),
+        tx=tx,
+        rx=rx,
         tx_power_dbm=request.tx.power_dbm,
         tx_gain_dbi=request.tx.gain_dbi,
         rx_gain_dbi=request.rx.gain_dbi,
         sensitivity_dbm=request.rx.sensitivity_dbm,
         frequency_mhz=request.frequency_mhz,
+        vegetation_db=vegetation_db,
     )
     return LinkBudgetResponse(**budget.__dict__)