simplify how floor and ceiling altitudes are represented

Author: ekurutepe

Iguazu.podspec

@@ -8,7 +8,7 @@
 
 Pod::Spec.new do |s|
   s.name         = "Iguazu"
-  s.version      = "1.2.1"
+  s.version      = "1.2.2"
   s.summary      = "An aviation file format parser written in Swift"
   s.description  = <<-DESC
 Iguazu is a new project and still work in progress. The goal is to have a Swift framework with support for various popular aviation file formats to facilitate development of apps for pilots on the iOS platform.

Iguazu/AirSpace.swift

@@ -315,16 +315,20 @@ public extension AirSpace {
 }
 
 extension AirSpaceAltitude {
-    var asNSDictionary: NSDictionary {
+    var geoJsonAltitude: Int {
         switch self {
         case .surface:
-            return [ "type": "surface" ] as NSDictionary
-        case .fl(let lvl):
-            return [ "type": "fl", "value": lvl ] as NSDictionary
+            return 0
+        case .fl(let level):
+            let flMeasure = Measurement(value: 100.0*Double(level), unit: UnitLength.feet).converted(to: .meters)
+            let intMeters = Int(flMeasure.value.rounded())
+            return intMeters
         case .agl(let alt):
-            return [ "type": "agl", "value": alt.value, "unit": alt.unit.symbol ] as NSDictionary
+            let intAGL = Int(alt.converted(to: .meters).value)
+            return intAGL
         case .msl(let alt):
-            return [ "type": "msl", "value": alt.value, "unit": alt.unit.symbol ] as NSDictionary
+            let intMSL = Int(alt.converted(to: .meters).value)
+            return intMSL
         }
     }
 }
@@ -338,8 +342,8 @@ extension AirSpace: GeoJsonEncodable {
             "properties": [
                 "name": self.name as NSString,
                 "type": self.class.rawValue as NSString,
-                "floor": self.floor.asNSDictionary,
-                "ceiling": self.ceiling.asNSDictionary,
+                "floor": self.floor.geoJsonAltitude,
+                "ceiling": self.ceiling.geoJsonAltitude,
             ] as NSDictionary,
             "geometry": [
                 "type": "Polygon" as NSString,

Iguazu/Info.plist

@@ -15,7 +15,7 @@
 	<key>CFBundlePackageType</key>
 	<string>FMWK</string>
 	<key>CFBundleShortVersionString</key>
-	<string>1.2.1</string>
+	<string>1.2.2</string>
 	<key>CFBundleSignature</key>
 	<string>????</string>
 	<key>CFBundleVersion</key>

IguazuTests/AirSpaceTests.swift

@@ -27,7 +27,7 @@ class AirSpaceTests : XCTestCase {
         XCTAssertNotNil(airSpaces)
         let asp = airSpaces![0]
         let geoJson = asp.geoJsonString
-        XCTAssertEqual(geoJson, "{\"type\":\"Feature\",\"properties\":{\"ceiling\":{\"type\":\"fl\",\"value\":65},\"name\":\"TMZ-EDLW 129.875\",\"type\":\"TMZ\",\"floor\":{\"type\":\"msl\",\"value\":4500,\"unit\":\"ft\"}},\"geometry\":{\"type\":\"Polygon\",\"coordinates\":[[[7.3055555555555554,51.516666666666666],[7.3055555555555554,51.516666666666666],[7.3433333333333328,51.423888888888889],[7.4625000000000004,51.31305555555555],[7.4519444444444449,51.408333333333331],[7.3741666666666665,51.493055555555557],[7.3055555555555554,51.516666666666666]]]}}")
+        XCTAssertEqual(geoJson, "{\"type\":\"Feature\",\"properties\":{\"ceiling\":1981,\"name\":\"TMZ-EDLW 129.875\",\"type\":\"TMZ\",\"floor\":1371},\"geometry\":{\"type\":\"Polygon\",\"coordinates\":[[[7.3055555555555554,51.516666666666666],[7.3055555555555554,51.516666666666666],[7.3433333333333328,51.423888888888889],[7.4625000000000004,51.31305555555555],[7.4519444444444449,51.408333333333331],[7.3741666666666665,51.493055555555557],[7.3055555555555554,51.516666666666666]]]}}")
 
     }
 }