lib/terraformer/point.rb in terraformer-0.0.2 vs lib/terraformer/point.rb in terraformer-0.0.3

@@ -5,27 +5,47 @@
     def first_coordinate
       coordinates
     end
 
     def distance_and_bearing_to obj
-      case obj
-      when Point
-        first_coordinate.distance_and_bearing_to obj.first_coordinate
+      dabt = case obj
+             when Point
+               [first_coordinate.distance_and_bearing_to(obj.first_coordinate)]
 
-      # todo other cases
-      end
+             when MultiPoint
+               obj.coordinates.map {|c| first_coordinate.distance_and_bearing_to c}
+
+             when LineString
+               obj.coordinates.map {|c| first_coordinate.distance_and_bearing_to c}
+
+             when MultiLineString
+               obj.line_strings.map {|ls| distance_and_bearing_to ls}
+
+             when Polygon
+               obj.line_strings[0].coordinates.map {|c| first_coordinate.distance_and_bearing_to c}
+
+             when MultiPolygon
+               obj.polygons.map {|p| distance_and_bearing_to p}
+
+             # todo other cases
+
+             else
+               raise ArgumentError.new "unsupported type: #{obj.type rescue obj.class}"
+             end
+      dabt.flatten!
+      dabt.minmax_by {|db| db[:distance]}
     end
 
-    def distance_to obj
-      distance_and_bearing_to(obj)[:distance]
+    def distance_to obj, minmax = :min
+      distance_and_bearing_to(obj)[minmax == :min ? 0 : 1][:distance]
     end
 
     def initial_bearing_to obj
-      distance_and_bearing_to(obj)[:bearing][:initial]
+      distance_and_bearing_to(obj)[0][:bearing][:initial]
     end
 
     def final_bearing_to obj
-      distance_and_bearing_to(obj)[:bearing][:final]
+      distance_and_bearing_to(obj)[0][:bearing][:final]
     end
 
     def contains? obj
       case obj
       when Point