From d4e70fe556a3327da4aba66a602220d9fd20947e Mon Sep 17 00:00:00 2001
From: arthomnix <arthomnix@arthomnix.dev>
Date: Sat, 4 Apr 2026 19:34:48 +0100
Subject: [PATCH] don't draw trajectory line when zoomed in in non-map mode

---
 OemLoader/EphemerisTrajectory.cs | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/OemLoader/EphemerisTrajectory.cs b/OemLoader/EphemerisTrajectory.cs
index 9364be8..5027d1e 100644
--- a/OemLoader/EphemerisTrajectory.cs
+++ b/OemLoader/EphemerisTrajectory.cs
@@ -29,8 +29,16 @@ public readonly partial struct EphemerisTrajectory
     public void DrawTrajectory(Viewport viewport, IParentBody parent, byte4 colour)
     {
         if (!Program.DrawUI) return;
-
+        
         var camera = viewport.GetCamera();
+        // If not in map mode, don't draw trajectory line if we are too zoomed in
+        // (match stock behaviour for orbit lines)
+        if (viewport.Mode != CameraMode.Map && camera.Following is not null)
+        {
+            var distance = camera.DistanceTo(camera.Following.GetPositionEcl());
+            if (distance < 500000) return; // constant from KSA.Astronomical.ShouldDrawUiOrLines
+        }
+        
         Span<float3> positions = stackalloc float3[Count];
         for (var i = 0; i < Count; ++i)
         {
-- 
2.51.2