Function SceneContent

src/components/viewer3d/Scene3D.tsx:96–262

()

}

function SceneContent() {
  const {
    data: {
      reconstruction,
      wasmReconstruction,
      splatFile,
      isIdle,
      autoHideElements,
      showAutoHideEditor,
      viewResetTrigger,
      viewDirection,
      viewTrigger,
      transform,
      splatTransform,
      requestedSplatBackend,
      splatBackendAvailability,
      splatBackendResolution,
      splatsVisible,
      urlProgress,
    },
    actions: {
      setSparkBackendAvailable,
    },
  } = useSceneContentStoreFacade();
  // Use shared alignment mode (includes point picking AND floor detection)
  const isAlignmentMode = useIsAlignmentMode();

  const bounds = useMemo(() => {
    return buildSceneBounds(reconstruction, wasmReconstruction);
  }, [reconstruction, wasmReconstruction]);

  const cameras = useCamerasNode();
  const axes = useAxesNode();
  const grid = useGridNode();
  const gizmo = useGizmoNode();
  const webGpuSplatCanvasMounted = shouldMountWebGpuSplatCanvas(
    requestedSplatBackend,
    splatBackendAvailability,
    splatFile
  );
  const sparkSplatLayerNeeded = splatFile
    && shouldPreloadSparkSplatRuntime(requestedSplatBackend, splatBackendAvailability);

  // Compute transforms for visual preview. The active transform wraps COLMAP
  // content, while the splat transform is persisted after Apply because raw
  // splat geometry cannot be baked into the source file.
  const {
    transformMatrix,
    splatTransformMatrix,
    webGpuSplatModelMatrix,
    transformedCenter,
  } = useMemo(() => {
    const sim3d = isIdentityEuler(transform) ? null : createSim3dFromEuler(transform);
    const splatSim3d = isIdentityEuler(splatTransform) ? null : createSim3dFromEuler(splatTransform);
    const matrix = sim3d ? sim3dToMatrix4(sim3d) : null;
    const splatMatrix = splatSim3d ? sim3dToMatrix4(splatSim3d) : null;
    const webGpuMatrix = sim3d && splatSim3d
      ? sim3dToMatrix4(composeSim3d(sim3d, splatSim3d))