From 552f19a7f5408dc5c1121b151ee20e6f9b279211 Mon Sep 17 00:00:00 2001
From: Victor Giers <mail@victorgiers.com>
Date: Tue, 12 May 2026 23:34:58 +0200
Subject: [PATCH] Feat: Add path terrain glue and offset controls

---
 src/app/App.tsx                           | 37 +++++++++++++++++++++++
 src/document/scene-document-validation.ts |  1 -
 2 files changed, 37 insertions(+), 1 deletion(-)

diff --git a/src/app/App.tsx b/src/app/App.tsx
index 448489c7..29dee952 100644
--- a/src/app/App.tsx
+++ b/src/app/App.tsx
@@ -239,6 +239,7 @@ import {
   getScenePathPointIndex,
   getScenePaths,
   normalizeScenePathSampledResolution,
+  normalizeScenePathTerrainOffset,
   normalizeScenePathName,
   type ScenePath,
   type ScenePathCurveMode,
@@ -9605,6 +9606,8 @@ export function App({
         loop: selectedPath.loop,
         curveMode: selectedPath.curveMode,
         sampledResolution: selectedPath.sampledResolution,
+        glueToTerrain: selectedPath.glueToTerrain,
+        terrainOffset: selectedPath.terrainOffset,
         points: selectedPath.points.map((point, index) => ({
           id: point.id,
           position: readVec3Draft(
@@ -9676,6 +9679,40 @@ export function App({
     commitPathChange(selectedPath, nextPath, "Updated Path spline resolution.");
   };
 
+  const handlePathGlueToTerrainChange = (glueToTerrain: boolean) => {
+    if (selectedPath === null) {
+      setStatusMessage("Select a path before changing terrain glue.");
+      return;
+    }
+
+    const nextPath = createScenePath({
+      ...selectedPath,
+      glueToTerrain
+    });
+
+    commitPathChange(
+      selectedPath,
+      nextPath,
+      glueToTerrain
+        ? "Enabled Path terrain glue."
+        : "Disabled Path terrain glue."
+    );
+  };
+
+  const handlePathTerrainOffsetChange = (terrainOffset: number) => {
+    if (selectedPath === null) {
+      setStatusMessage("Select a path before changing terrain offset.");
+      return;
+    }
+
+    const nextPath = createScenePath({
+      ...selectedPath,
+      terrainOffset: normalizeScenePathTerrainOffset(terrainOffset)
+    });
+
+    commitPathChange(selectedPath, nextPath, "Updated Path terrain offset.");
+  };
+
   const handlePathPointDraftChange = (
     pointIndex: number,
     axis: keyof Vec3Draft,
diff --git a/src/document/scene-document-validation.ts b/src/document/scene-document-validation.ts
index cae05a8a..39e0d85a 100644
--- a/src/document/scene-document-validation.ts
+++ b/src/document/scene-document-validation.ts
@@ -79,7 +79,6 @@ import {
   MAX_SCENE_PATH_SAMPLED_RESOLUTION,
   MIN_SCENE_PATH_POINT_COUNT,
   MIN_SCENE_PATH_SAMPLED_RESOLUTION,
-  normalizeScenePathTerrainOffset,
   isScenePathCurveMode,
   type ScenePath
 } from "./paths";