From 0e4174a98f0e3f510b3cc79b11e2067593cfb01b Mon Sep 17 00:00:00 2001
From: Victor Giers <mail@victorgiers.com>
Date: Tue, 12 May 2026 23:35:51 +0200
Subject: [PATCH] Pass terrain context to path sampling in ViewportHost

---
 src/viewport-three/viewport-host.ts | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/src/viewport-three/viewport-host.ts b/src/viewport-three/viewport-host.ts
index a7603194..40233a67 100644
--- a/src/viewport-three/viewport-host.ts
+++ b/src/viewport-three/viewport-host.ts
@@ -6038,10 +6038,14 @@ export class ViewportHost {
     const trackStartPoint = toLocalPoint(entity.trackStartPoint);
     const trackEndPoint = toLocalPoint(entity.trackEndPoint);
     const railStartPoint = toLocalPoint(
-      sampleScenePathPosition(authoredPath, entity.railStartProgress)
+      sampleScenePathPosition(authoredPath, entity.railStartProgress, {
+        terrains: this.getPathTerrainGlueTerrains()
+      })
     );
     const railEndPoint = toLocalPoint(
-      sampleScenePathPosition(authoredPath, entity.railEndProgress)
+      sampleScenePathPosition(authoredPath, entity.railEndProgress, {
+        terrains: this.getPathTerrainGlueTerrains()
+      })
     );
 
     preview.previewGroup.visible = true;