About CesiumGlobeAnchor

jh007 · June 14, 2024, 10:40am

As shown in the figure, in the analysis tool, the CesiumGlobeAnchor script occupies some performance. How to avoid it

Kevin_Ring · June 16, 2024, 11:52pm

Turning off detectTransformChanges may help:

CesiumGS/cesium-unity/blob/af825c6f44dbfb8c62d02ed626b450400c8d7c69/Runtime/CesiumGlobeAnchor.cs#L138


      
          /// so that it can be reflected in the precise coordinates. When this is property is false,
          /// the coroutine and polling are not necessary, but the precise coordinates may become out of sync
          /// with the <code>Transform</code>.
          /// </para>
          /// <para>
          /// When this is false, you can still directly set the precise coordinates, and the <code>Transform</code>
          /// will update accordingly. You can also call <see cref="Sync"/> after setting the <code>Transform</code>
          /// to manually update the precise coordinates.
          /// </para>
          /// </remarks>
          public bool detectTransformChanges
          {
              get => this._detectTransformChanges;
              set
              {
                  this._detectTransformChanges = value;
                  this.StartOrStopDetectingTransformChanges();
              }
          }
          
          /// <summary>

jh007 · June 17, 2024, 1:31am

With detectTransformChanges off, is there a problem updating the location of this object when the camera moves

Kevin_Ring · June 17, 2024, 2:39am

The comment above the line I linked above explains the implications of turning it off. In short, with that flag set to false, if you change the Unity Transform, the CesiumGlobeAnchor’s Longitude / Latitude / Height will not automatically update to the reflect the new position (because Unity gives us no way to reliably determine that this has happened other than by polling with a coroutine). You’ll have to manually call Sync on it. However, if you set the globe position by calling methods or setting properties on the CesiumGlobeAnchor itself, the Transform will automatically update accordingly (no matter the state of this flag).

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About CesiumGlobeAnchor

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