Add basic field to selection panel

Author: grtlr

crates/viewer/re_view_spatial/src/ui.rs

@@ -65,6 +65,10 @@ pub struct SpatialViewState {
     pub pinhole_at_origin: Option<Pinhole>,
 
     pub visual_bounds_2d: Option<VisualBounds2D>,
+
+    /// The target frame, i.e., the coordinate frame that transforms are resolved to.
+    /// Computed from the space origin via the transform tree.
+    pub target_frame: Option<String>,
 }
 
 impl ViewState for SpatialViewState {

crates/viewer/re_view_spatial/src/view_2d.rs

@@ -15,7 +15,7 @@ use re_viewer_context::{
 };
 
 use crate::{
-    contexts::register_spatial_contexts,
+    contexts::{register_spatial_contexts, TransformTreeContext},
     heuristics::default_visualized_entities_for_visualizer_kind,
     max_image_dimension_subscriber::{ImageTypes, MaxDimensions},
     shared_fallbacks,
@@ -291,6 +291,19 @@ impl ViewClass for SpatialView2D {
         let state = state.downcast_mut::<SpatialViewState>()?;
         // TODO(andreas): list_item'ify the rest
         ui.selection_grid("spatial_settings_ui").show(ui, |ui| {
+            if ctx.app_options().experimental_coordinate_frame_display_and_override {
+                ui.grid_left_hand_label("Target frame")
+                    .on_hover_text("The coordinate frame that transforms are resolved to");
+                ui.vertical(|ui| {
+                    if let Some(target_frame) = &state.target_frame {
+                        ui.label(target_frame);
+                    } else {
+                        ui.weak("(unknown)");
+                    }
+                });
+                ui.end_row();
+            }
+
             state.bounding_box_ui(ui, SpatialViewKind::TwoD);
         });
 
@@ -318,6 +331,11 @@ impl ViewClass for SpatialView2D {
         let state = state.downcast_mut::<SpatialViewState>()?;
         state.update_frame_statistics(ui, &system_output, SpatialViewKind::TwoD);
 
+        // Store the target frame for display in the selection panel
+        if let Ok(transforms) = system_output.context_systems.get::<TransformTreeContext>() {
+            state.target_frame = Some(transforms.format_frame(transforms.target_frame()));
+        }
+
         self.view_2d(ctx, ui, state, query, system_output)
     }
 }

crates/viewer/re_view_spatial/src/view_3d.rs

@@ -28,7 +28,7 @@ use re_viewer_context::{
 use re_viewport_blueprint::ViewProperty;
 
 use crate::{
-    contexts::register_spatial_contexts,
+    contexts::{register_spatial_contexts, TransformTreeContext},
     heuristics::default_visualized_entities_for_visualizer_kind,
     spatial_topology::{HeuristicHints, SpatialTopology, SubSpaceConnectionFlags},
     ui::SpatialViewState,
@@ -575,6 +575,19 @@ impl ViewClass for SpatialView3D {
             });
             ui.end_row();
 
+            if ctx.app_options().experimental_coordinate_frame_display_and_override {
+                ui.grid_left_hand_label("Target frame")
+                    .on_hover_text("The coordinate frame that transforms are resolved to");
+                ui.vertical(|ui| {
+                    if let Some(target_frame) = &state.target_frame {
+                        ui.label(target_frame);
+                    } else {
+                        ui.weak("(unknown)");
+                    }
+                });
+                ui.end_row();
+            }
+
             state.bounding_box_ui(ui, SpatialViewKind::ThreeD);
 
             #[cfg(debug_assertions)]
@@ -606,6 +619,11 @@ impl ViewClass for SpatialView3D {
         let state = state.downcast_mut::<SpatialViewState>()?;
         state.update_frame_statistics(ui, &system_output, SpatialViewKind::ThreeD);
 
+        // Store the target frame for display in the selection panel
+        if let Ok(transforms) = system_output.context_systems.get::<TransformTreeContext>() {
+            state.target_frame = Some(transforms.format_frame(transforms.target_frame()));
+        }
+
         self.view_3d(ctx, ui, state, query, system_output)
     }
 }