support picking

vis3d/unity/Assets/_app/Scenes/Picking.unity

@@ -560,7 +560,8 @@ MonoBehaviour:
   m_EditorClassIdentifier: 
   map: {fileID: 1531869475}
   mainCamera: {fileID: 1351042193}
-  pointProvider: {fileID: 1589241769}
+  dataPointVisualize: {fileID: 1020559675}
+  selectedLineRendererThickness: 3
 --- !u!4 &512039574
 Transform:
   m_ObjectHideFlags: 0
@@ -964,7 +965,7 @@ MonoBehaviour:
   map: {fileID: 1531869475}
   dataPathPrefab: {fileID: 30970607541745683, guid: b4fe9b9891b8d4243be82fd4ef1a8ecb,
     type: 3}
-  dataLimit: 3
+  dataLimit: 99
   dataPointProvider: {fileID: 1589241769}
 --- !u!1 &1215081329
 GameObject:

vis3d/unity/Assets/_app/Scripts/DataPointVisualize.cs

@@ -33,6 +33,14 @@ public class DataPointVisualize : MonoBehaviour
 
   Vector3 _targetPosition;
 
+  public List<DataPath> Paths
+  {
+    get
+    {
+      return paths;
+    }
+  }
+
   List<DataPath> paths = new List<DataPath>();
 
   public void SetTime(float t)
@@ -144,7 +152,6 @@ public class DataPointVisualize : MonoBehaviour
 
           lastID = point.id_hash;
 
-          //GameObject go = new GameObject(point.id);
           GameObject go = Instantiate(this.dataPathPrefab, this.transform);
           go.name = point.id_hash.ToString();
           path = go.GetComponent<DataPath>();

vis3d/unity/Assets/_app/Scripts/PathPicker.cs

@@ -4,12 +4,17 @@ using System.Collections.Generic;
 using UnityEngine;
 using Mapbox.Unity.Utilities;
 using Mapbox.Utils;
+using System;
 
 public class PathPicker : MonoBehaviour
 {
   public AbstractMap map;
   public Camera mainCamera;
-  public DataPointProvider pointProvider;
+  public DataPointVisualize dataPointVisualize;
+  public float selectedLineRendererThickness = 3;
+
+  private LineRenderer lastLineRender = null;
+  private float lastLineRenderWidth;
 
   public void Update()
   {
@@ -17,6 +22,45 @@ public class PathPicker : MonoBehaviour
       ProcessClick();
     }
   }
+  private void pickPath(Vector2d geo)
+  {
+    double distances = Double.MaxValue;
+    DataPath closestPath = null;
+
+    Debug.Log(dataPointVisualize.Paths);
+    foreach (var path in dataPointVisualize.Paths)
+    {
+      foreach (var point in path.points)
+      {
+        Vector2d p = new Vector2d(point.lat, point.lon);
+
+        var div = geo - p;
+        var mag = div.sqrMagnitude;
+
+        if (mag < distances) {
+          distances = mag;
+          closestPath = path;
+        }
+      }
+    }
+
+    if (closestPath != null)
+    {
+      Debug.Log(closestPath.id_hash);
+      var lr = closestPath.GetComponent<LineRenderer>();
+
+      if (lastLineRender) {
+        lastLineRender.startWidth = lastLineRenderWidth;
+        lastLineRender.endWidth = lastLineRenderWidth;
+      }
+
+      lastLineRender = lr;
+      lastLineRenderWidth = lr.startWidth;
+
+      lr.startWidth = selectedLineRendererThickness;
+      lr.endWidth = selectedLineRendererThickness;
+    }
+  }
 
   public void ProcessClick()
   {
@@ -33,6 +77,7 @@ public class PathPicker : MonoBehaviour
       var geo = p.GetGeoPosition(map.CenterMercator, map.WorldRelativeScale);
       Debug.Log(geo.ToString());
 
+      pickPath(geo);
     }
   }
 }