refactor(#47): ⚡ improve updating of labels on the UI

made labels come up faster after a movement, not requiring a camera update anymore

src/MeasurementControl/measurementsPanel.js

@@ -862,6 +862,24 @@ export function initMeasurementsPanel(viewer) {
           })
         } catch (_e) {}
       })
+
+      // Listen to movement events separately so we can update overlay label
+      // positions immediately when a marker/point is moved
+      ;['marker_moved', 'marker_dropped', 'point_moved'].forEach((ev) => {
+        try {
+          obj.addEventListener(ev, () => {
+            // schedule a position update on next frame
+            requestAnimationFrame(() => updateOverlayPositions())
+            // If this measurement is currently selected, refresh the panel too
+            if (lastSelection.uuid === obj.uuid) {
+              try {
+                updateActiveSelection(obj.uuid)
+                showPanelInMeasurements()
+              } catch (_e) {}
+            }
+          })
+        } catch (_e) {}
+      })
     }
 
     // Distance/Height/Angle measurements can change type based on point count