Fix azimuth

kylecorry31 · Sep 12, 2020 · bea3bbf · bea3bbf
1 parent c0ad92a
commit bea3bbf
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Showing 2 changed files with 8 additions and 9 deletions.
diff --git a/app/src/main/java/com/kylecorry/trailsensecore/domain/astronomy/Astro.kt b/app/src/main/java/com/kylecorry/trailsensecore/domain/astronomy/Astro.kt
@@ -200,15 +200,14 @@ internal object Astro {
 
     fun azimuth(hourAngle: Double, latitude: Double, declination: Double): Double {
         return reduceAngleDegrees(
-            180 -
-                    Math.toDegrees(
-                        atan2(
-                            sinDegrees(hourAngle),
-                            cosDegrees(hourAngle) * sinDegrees(latitude) - tanDegrees(declination) * cosDegrees(
-                                latitude
-                            )
-                        )
+            Math.toDegrees(
+                atan2(
+                    sinDegrees(hourAngle),
+                    cosDegrees(hourAngle) * sinDegrees(latitude) - tanDegrees(declination) * cosDegrees(
+                        latitude
                     )
+                )
+            ) - 180
         )
     }
 

diff --git a/app/src/test/java/com/kylecorry/trailsensecore/domain/astronomy/AstroTest.kt b/app/src/test/java/com/kylecorry/trailsensecore/domain/astronomy/AstroTest.kt
@@ -209,7 +209,7 @@ class AstroTest {
 
     @Test
     fun azimuth(){
-        assertEquals(111.9663, Astro.azimuth(64.352133, 38.92139, -6.719892), 0.0001)
+        assertEquals(248.0337, Astro.azimuth(64.352133, 38.92139, -6.719892), 0.0001)
     }
 
     @Test
-Original file line number
+Diff line change
@@ Expand Up / @@ -209,7 +209,7 @@ class AstroTest { @@
         @Test
         fun azimuth(){
-            assertEquals(111.9663, Astro.azimuth(64.352133, 38.92139, -6.719892), 0.0001)
+            assertEquals(248.0337, Astro.azimuth(64.352133, 38.92139, -6.719892), 0.0001)
         }
         @Test
@@ Expand Down @@