use meters in the filters

milli/src/lib.rs

@@ -142,6 +142,14 @@ where
     Some((head, tail))
 }
 
+/// Return the distance between two points in meters
+fn distance_between_two_points(a: &[f64; 2], b: &[f64; 2]) -> f64 {
+    let a = haversine::Location { latitude: a[0], longitude: a[1] };
+    let b = haversine::Location { latitude: b[0], longitude: b[1] };
+
+    haversine::distance(a, b, haversine::Units::Kilometers) * 1000.
+}
+
 #[cfg(test)]
 mod tests {
     use serde_json::json;