beam: restore camera panning controls

frontend/dcViewer.js

@@ -259,11 +259,29 @@ const normalizeZoomSpeed = (value) => {
   return Math.min(100, Math.max(5, Math.round(numeric)));
 };
 
+const configureCameraPanMap = (control) => {
+  const input = viewer?.scene?.input;
+  if (!control || !input) return;
+  if (control.MOUSE_PAN === undefined || control.MOUSE_ROTATE === undefined || control.MOUSE_DOLLY === undefined) return;
+
+  control.panRightClick = true;
+  control.keyMap = {
+    ...(control.keyMap || {}),
+    [control.MOUSE_PAN]: [
+      [input.MOUSE_LEFT_BUTTON, input.KEY_SHIFT],
+      input.MOUSE_MIDDLE_BUTTON,
+      input.MOUSE_RIGHT_BUTTON,
+    ],
+    [control.MOUSE_ROTATE]: [input.MOUSE_LEFT_BUTTON],
+    [control.MOUSE_DOLLY]: [],
+  };
+};
+
 const configureCameraControl = () => {
   const control = viewer?.cameraControl;
   if (!control) return;
   activeZoomSpeed = normalizeZoomSpeed(activeZoomSpeed);
-  control.panRightClick = false;
+  configureCameraPanMap(control);
   control.followPointer = true;
   control.doublePickFlyTo = false;
   control.smartPivot = true;
@@ -2651,6 +2669,9 @@ const initViewer = async () => {
   const canvasEl = viewer.scene?.canvas?.canvas;
   if (canvasEl) {
     let downPos = null;
+    canvasEl.addEventListener("contextmenu", (event) => {
+      event.preventDefault();
+    });
     canvasEl.addEventListener("pointerdown", (event) => {
       if (measureActive) {
         downPos = null;

frontend/index.html

@@ -239,6 +239,6 @@
   <input id="fileInput" class="hidden" type="file"
          accept=".xkt,.glb,.gltf,.bim,.las,.laz,.obj,.stl">
 
-  <script type="module" src="./dcViewer.js?v=8"></script>
+  <script type="module" src="./dcViewer.js?v=9"></script>
 </body>
 </html>