动态海拔图，全路线小地图，骑行记录上传增加截图

Assets/Scripts/Apis/Models/MapDataModel.cs

@@ -1,4 +1,5 @@
-using System;
+using GeoJSON.Net.Geometry;
+using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
@@ -64,6 +65,8 @@ namespace Assets.Scripts.Apis.Models
                 if (_List == null) return;
                 this.CalcDistance();
                 this.CalcGrade();
+                this.CalcBbox();
+                this.CalcCenter();
             }
         }
 
@@ -117,7 +120,22 @@ namespace Assets.Scripts.Apis.Models
 
             }
         }
-
+        private void CalcCenter() 
+        {
+            var list = this.List.Select(p => new GeoJSON.Net.Geometry.GeographicPosition(p.Point[0], p.Point[1]));
+            LineString lineString = new LineString(list);
+            var ll = Turf.Centroid(lineString);
+            var p1 = ((Point)ll.Geometry).Coordinates;
+            Center = new double[] { ((GeographicPosition)p1).Latitude, ((GeographicPosition)p1).Longitude };
+        }
+        private void CalcBbox()
+        {
+            var list = this.List.Select(p => new GeoJSON.Net.Geometry.GeographicPosition(p.Point[0], p.Point[1]));
+            LineString lineString = new LineString(list);
+            Bbox = Turf.Bbox(lineString);
+        }
+        public Double[] Center { set; get; }
+        public List<Double> Bbox { set; get; }
         public MapDataModel()
         {
             //List = new List<Item>();