Limit nearby path points

kylecorry31 · Feb 2, 2024 · 90d36c6 · 90d36c6
1 parent cfc58b8
commit 90d36c6
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Showing 2 changed files with 13 additions and 5 deletions.
diff --git a/...va/com/kylecorry/trail_sense/tools/augmented_reality/domain/position/GeographicARPoint.kt b/...va/com/kylecorry/trail_sense/tools/augmented_reality/domain/position/GeographicARPoint.kt
@@ -12,9 +12,9 @@ import kotlin.math.hypot
  * @param actualDiameter The actual diameter of the point in meters, defaults to 1 meter
  */
 class GeographicARPoint(
-    private val location: Coordinate,
-    private val elevation: Float? = null,
-    private val actualDiameter: Float = 1f
+    val location: Coordinate,
+    val elevation: Float? = null,
+    val actualDiameter: Float = 1f
 ) : ARPoint {
     override fun getAngularDiameter(view: AugmentedRealityView): Float {
         val distance = hypot(

diff --git a/app/src/main/java/com/kylecorry/trail_sense/tools/augmented_reality/ui/layers/ARPathLayer.kt b/app/src/main/java/com/kylecorry/trail_sense/tools/augmented_reality/ui/layers/ARPathLayer.kt
@@ -28,6 +28,9 @@ class ARPathLayer(viewDistance: Distance) : ARLayer, IPathLayer {
     private var lastLocation = Coordinate.zero
     private val viewDistanceMeters = viewDistance.meters().distance
 
+    // A limit to ensure performance is not impacted
+    private val nearbyLimit = 20
+
     override fun draw(drawer: ICanvasDrawer, view: AugmentedRealityView) {
         lastLocation = view.location
         pointLayer.draw(drawer, view)
@@ -86,8 +89,7 @@ class ARPathLayer(viewDistance: Distance) : ARLayer, IPathLayer {
             bounds,
             output,
             zValues = z,
-            zOutput = zOutput,
-            rdpFilterEpsilon = 10f
+            zOutput = zOutput
         )
 
         // Step 3: Interpolate between the points for a higher resolution
@@ -112,6 +114,12 @@ class ARPathLayer(viewDistance: Distance) : ARLayer, IPathLayer {
             finalPoints.add(GeographicARPoint(projectedCoordinate, elevation))
         }
 
+        // Limit to the closest points
+        if (finalPoints.size > nearbyLimit) {
+            finalPoints.sortBy { it.location.distanceTo(location) }
+            return finalPoints.subList(0, nearbyLimit)
+        }
+
         return finalPoints
 
     }