From 1569ed9c23f3fb266250ee76167edfbf7e2d80fe Mon Sep 17 00:00:00 2001
From: CODEX <codex@nodedc.local>
Date: Thu, 4 Jun 2026 23:10:26 +0300
Subject: [PATCH] beam: tune camera zoom precision

---
 frontend/dcViewer.js | 25 +++++++++++++++++++++++++
 frontend/index.html  |  2 +-
 2 files changed, 26 insertions(+), 1 deletion(-)

diff --git a/frontend/dcViewer.js b/frontend/dcViewer.js
index a905569..85f6bb0 100644
--- a/frontend/dcViewer.js
+++ b/frontend/dcViewer.js
@@ -242,8 +242,32 @@ let suppressEdgeReload = false;
 let lastAttemptedProjectId = null;
 const treeModelIds = new Set();
 
+const CAMERA_CONTROL_SETTINGS = {
+  keyboardDollyRate: 45,
+  mouseWheelDollyRate: 20,
+  dollyInertia: 0,
+  dollyMinSpeed: 0.008,
+  dollyProximityThreshold: 90,
+};
+
+const configureCameraControl = () => {
+  const control = viewer?.cameraControl;
+  if (!control) return;
+  control.panRightClick = false;
+  control.followPointer = true;
+  control.doublePickFlyTo = false;
+  control.smartPivot = true;
+  control.zoomOnMouseWheel = true;
+  control.keyboardDollyRate = CAMERA_CONTROL_SETTINGS.keyboardDollyRate;
+  control.mouseWheelDollyRate = CAMERA_CONTROL_SETTINGS.mouseWheelDollyRate;
+  control.dollyInertia = CAMERA_CONTROL_SETTINGS.dollyInertia;
+  control.dollyMinSpeed = CAMERA_CONTROL_SETTINGS.dollyMinSpeed;
+  control.dollyProximityThreshold = CAMERA_CONTROL_SETTINGS.dollyProximityThreshold;
+};
+
 const ensureCameraControlActive = () => {
   if (!viewer || !viewer.cameraControl) return;
+  configureCameraControl();
   if (viewer.cameraControl.enabled === false) {
     viewer.cameraControl.enabled = true;
   }
@@ -2465,6 +2489,7 @@ const initViewer = async () => {
     dtxEnabled: true,
     colorTextureEnabled: true,
   });
+  configureCameraControl();
   defaultCameraWorldAxis = snapshotVec(viewer.camera?.worldAxis) || [...NAVIGATION_AXIS_PRESETS["y-up"].worldAxis];
   defaultCameraUp = snapshotVec(viewer.camera?.up) || [...NAVIGATION_AXIS_PRESETS["y-up"].up];
   if (viewer.scene?.highlightMaterial) {
diff --git a/frontend/index.html b/frontend/index.html
index 8bf1a14..1f7f7a3 100644
--- a/frontend/index.html
+++ b/frontend/index.html
@@ -238,6 +238,6 @@
   <input id="fileInput" class="hidden" type="file"
          accept=".xkt,.glb,.gltf,.bim,.las,.laz,.obj,.stl">
 
-  <script type="module" src="./dcViewer.js?v=5"></script>
+  <script type="module" src="./dcViewer.js?v=6"></script>
 </body>
 </html>