From a13fa8a4dbe927721403131e786b14da6f91b2c2 Mon Sep 17 00:00:00 2001
From: Doug Slater <doug@slater.dev>
Date: Sun, 6 Apr 2025 08:22:35 -0400
Subject: [PATCH] Fix map edit

---
 Directory.Build.props                    |  4 ++--
 Ui/FitEdit.Ui.iOS/Info.plist             |  4 ++--
 Ui/FitEdit.Ui/ViewModels/MapViewModel.cs | 24 ++++++++++++++++++++++--
 3 files changed, 26 insertions(+), 6 deletions(-)

diff --git a/Directory.Build.props b/Directory.Build.props
index 423df1bf..76ca1ead 100644
--- a/Directory.Build.props
+++ b/Directory.Build.props
@@ -9,8 +9,8 @@
     <Nullable>disable</Nullable>
     <LangVersion>latest</LangVersion>
 
-    <VersionPrefix>5.8.0</VersionPrefix>
-    <BuildIncrement>46</BuildIncrement>
+    <VersionPrefix>5.8.1</VersionPrefix>
+    <BuildIncrement>47</BuildIncrement>
     <VersionSuffix></VersionSuffix>
     <Product>FitEdit</Product>
     <Copyright>EnduraByte LLC 2024</Copyright>
diff --git a/Ui/FitEdit.Ui.iOS/Info.plist b/Ui/FitEdit.Ui.iOS/Info.plist
index ef1cd366..a97e3e94 100644
--- a/Ui/FitEdit.Ui.iOS/Info.plist
+++ b/Ui/FitEdit.Ui.iOS/Info.plist
@@ -7,7 +7,7 @@
     <key>CFBundleIdentifier</key>
     <string>com.endurabyte.fitedit</string>
     <key>CFBundleShortVersionString</key>
-    <string>5.8.0</string>
+    <string>5.8.1</string>
     <key>LSRequiresIPhoneOS</key>
     <true />
     <key>MinimumOSVersion</key>
@@ -57,6 +57,6 @@
       </dict>
     </array>
     <key>CFBundleVersion</key>
-    <string>46</string>
+    <string>47</string>
   </dict>
 </plist>
diff --git a/Ui/FitEdit.Ui/ViewModels/MapViewModel.cs b/Ui/FitEdit.Ui/ViewModels/MapViewModel.cs
index 04e4a19d..9e71b03d 100644
--- a/Ui/FitEdit.Ui/ViewModels/MapViewModel.cs
+++ b/Ui/FitEdit.Ui/ViewModels/MapViewModel.cs
@@ -408,19 +408,39 @@ private ILayer? AddTrace
     int count = -1
   )
   {
-    var range = Enumerable.Range(index < 0 ? 0 : index, count < 0 ? fit.Records.Count : count);
+    var range = Enumerable
+      .Range(index < 0 ? 0 : index, count < 0 ? fit.Records.Count : count)
+      .ToList();
 
     Coordinate[] coords = range
       .Select(i => fit.Records[i])
       .Select(r => r.MapCoordinate())
-      .Where(c => c.X != 0 && c.Y != 0)
       .ToArray();
 
+    // Prevent zero lat lon
+    foreach (int i in range.Skip(1))
+    {
+      PreventZeroLatLon(coords, i);
+    }
+    
     return editable 
       ? AddEditTrace(coords, name, color, FitColor.RedCrayon) 
       : AddTrace(coords, name, layer, color, lineWidth);
   }
 
+  private static void PreventZeroLatLon(Coordinate[] coords, int i)
+  {
+    Coordinate coord = coords[i];
+    Coordinate prev = coords[i - 1];
+
+    const double tol = 1e-6;
+    if (Math.Abs(coord.X) < tol && Math.Abs(coord.Y) < tol)
+    {
+      coord.X = prev.X;
+      coord.Y = prev.Y;
+    }
+  }
+
   private ILayer? AddTrace(Coordinate[] coords, string name, int layer, Avalonia.Media.Color color, int lineWidth)
   { 
     if (coords.Length < 2) { return null; }