LatLng: fix distanceTo to correctly return meters

sygic-travel · Oct 30, 2019 · de9d649 · de9d649
1 parent 00f6da1
commit de9d649
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Showing 2 changed files with 10 additions and 2 deletions.
diff --git a/src/main/java/com/sygic/travel/sdk/places/model/geo/LatLng.kt b/src/main/java/com/sygic/travel/sdk/places/model/geo/LatLng.kt
@@ -26,7 +26,7 @@ data class LatLng(
 		val lon2 = point.lng
 		val p = PI / 180
 		val a = 0.5 - cos((lat2 - lat1) * p) / 2 + cos(lat1 * p) * cos(lat2 * p) * (1 - cos((lon2 - lon1) * p)) / 2
-		return 12742 * asin(sqrt(a))
+		return 12742 * asin(sqrt(a)) * 1000
 	}
 
 	fun withPrecision(decimals: Int = 6): LatLng {

diff --git a/src/test/java/com/sygic/travel/sdk/places/model/geo/LatLngTest.kt b/src/test/java/com/sygic/travel/sdk/places/model/geo/LatLngTest.kt
@@ -1,8 +1,8 @@
 package com.sygic.travel.sdk.places.model.geo
 
-import com.sygic.travel.sdk.places.model.geo.LatLng
 import org.junit.Assert.assertEquals
 import org.junit.Test
+import kotlin.math.roundToInt
 
 class LatLngTest {
 	@Test
@@ -24,4 +24,12 @@ class LatLngTest {
 			latLng.withPrecision(10).toApiExpression()
 		)
 	}
+
+	@Test
+	fun testDistance() {
+		val from = LatLng(49.233461, 16.572517)
+		val to = LatLng(49.231109, 16.573447)
+
+		assertEquals(270, from.distanceTo(to).roundToInt())
+	}
 }