Add data-time transform resolution for spatial views

crates/store/re_sdk_types/definitions/rerun/blueprint/archetypes/spatial_information.fbs

@@ -9,6 +9,17 @@ table SpatialInformation (
   /// Defaults to the coordinate frame used by the space origin entity.
   target_frame: rerun.components.TransformFrameId ("attr.rerun.component_optional", order: 50);
 
+  /// Determines which time is used to resolve entity transforms.
+  ///
+  /// Defaults to resolving every transform at the global time cursor.
+  transform_resolution_mode: rerun.blueprint.components.TransformResolutionMode ("attr.rerun.component_optional", nullable, order: 60);
+
+  /// The local component identifier whose timestamp anchors component-time transform resolution.
+  ///
+  /// If this component isn't configured or isn't present on an entity, that entity falls back to
+  /// transform resolution at the global time cursor.
+  transform_time_component: rerun.blueprint.components.TransformTimeComponent ("attr.rerun.component_optional", nullable, order: 70);
+
   /// Whether the bounding box should be shown.
   // TODO(andreas): Make this an enum so the user can choose between showing bounding boxes,
   // regions of interest, or per-entity bounding boxes.

crates/store/re_sdk_types/definitions/rerun/blueprint/components/transform_resolution_mode.fbs

@@ -0,0 +1,19 @@
+namespace rerun.blueprint.components;
+
+/// Determines which time is used to resolve entity transforms in a spatial view.
+enum TransformResolutionMode: ubyte (
+    "attr.rerun.scope": "blueprint"
+) {
+    /// Invalid value. Won't show up in generated types.
+    Invalid = 0,
+
+    /// Resolve all transforms at the global time cursor.
+    ///
+    /// This is Rerun's default behavior.
+    GlobalTimeCursor (default),
+
+    /// Resolve each entity's transform at the latest timestamp of a configured component.
+    ///
+    /// The component is configured by [components.TransformTimeComponent].
+    ComponentTime,
+}

crates/store/re_sdk_types/definitions/rerun/blueprint/components/transform_time_component.fbs

@@ -0,0 +1,16 @@
+namespace rerun.blueprint.components;
+
+/// The local component identifier whose timestamp anchors transform resolution for an entity.
+///
+/// For example, `Points3D:positions` anchors a point cloud's transform to the time at which its
+/// positions were logged.
+table TransformTimeComponent (
+  "attr.arrow.transparent",
+  "attr.python.aliases": "str",
+  "attr.python.array_aliases": "str | Sequence[str]",
+  "attr.rust.derive": "PartialEq, Eq, PartialOrd, Ord, Hash",
+  "attr.rust.repr": "transparent",
+  "attr.rerun.scope": "blueprint"
+) {
+    value: rerun.datatypes.Utf8 (order: 100);
+}