- [android] Add direction arrows to reports.

- [android] Use DP for marker sizes.

1 files changed, 18 insertions, 1 deletions

diff --git a/androidApp/src/main/java/mx/trackermap/TrackerMap/android/shared/MarkerTransformations.kt b/androidApp/src/main/java/mx/trackermap/TrackerMap/android/shared/MarkerTransformations.kt
index 1e5c4de..88cb422 100644
--- a/androidApp/src/main/java/mx/trackermap/TrackerMap/android/shared/MarkerTransformations.kt
+++ b/androidApp/src/main/java/mx/trackermap/TrackerMap/android/shared/MarkerTransformations.kt
@@ -19,6 +19,7 @@ package mx.trackermap.TrackerMap.android.shared
 
 import mx.trackermap.TrackerMap.android.R
 import mx.trackermap.TrackerMap.client.models.Marker
+import kotlin.math.PI
 
 object MarkerTransformations {
     fun markerTypeToResourceId(markerType: Marker.Type): Int {
@@ -51,7 +52,7 @@ object MarkerTransformations {
         }
     }
 
-    fun markerTypeToStringId(markerType: Marker.Type): Int {
+    private fun markerTypeToStringId(markerType: Marker.Type): Int {
         return when (markerType) {
             Marker.Type.ANIMAL -> R.string.unit_category_animal
             Marker.Type.BICYCLE -> R.string.unit_category_bicycle
@@ -85,4 +86,20 @@ object MarkerTransformations {
     fun categoryToStringId(category: String?): Int {
         return markerTypeToStringId(Marker.categoryToMarkerType(category))
     }
+
+    private const val STEP = PI / 8
+
+    @OptIn(ExperimentalStdlibApi::class)
+    fun angleToResourceId(rad: Double): Int = when (rad) {
+        in 0.0 ..< STEP -> R.drawable.angle_0
+        in STEP ..< STEP * 3 -> R.drawable.angle_45
+        in STEP * 3 ..< STEP * 5 -> R.drawable.angle_90
+        in STEP * 5 ..< STEP * 7 -> R.drawable.angle_135
+        in STEP * 7 ..< STEP * 9 -> R.drawable.angle_180
+        in STEP * 9 ..< STEP * 11 -> R.drawable.angle_225
+        in STEP * 11 ..< STEP * 13 -> R.drawable.angle_270
+        in STEP * 13 ..< STEP * 15 -> R.drawable.angle_315
+        in STEP * 15 ..< STEP * 16 -> R.drawable.angle_0
+        else -> angleToResourceId(PI * 2 + rad)
+    }
 }
\ No newline at end of file