[pure refactor] Separate viewport related files out to a new re_viewp…

…ort crate (#2251)

<!--
Open the PR up as a draft until you feel it is ready for a proper
review.

Do not make PR:s from your own `main` branch, as that makes it difficult
for reviewers to add their own fixes.

Add any improvements to the branch as new commits to make it easier for
reviewers to follow the progress. All commits will be squashed to a
single commit once the PR is merged into `main`.

Make sure you mention any issues that this PR closes in the description,
as well as any other related issues.

To get an auto-generated PR description you can put "copilot:summary" or
"copilot:walkthrough" anywhere.
-->

### What

First step towards:
* #2249 

and getting close to finish of:
* #1873 

This PR moves almost everything viewport related out to a separate crate
that is eclipses the `re_viewer` package in size now. In upcoming steps
space view definition will be separated out of this new crate in turn.
Also, blueprint things will likely need a new home as well similar to
`re_log_types`. But one thing after the other :)

### Checklist
* [x] I have read and agree to [Contributor
Guide](https://github.com/rerun-io/rerun/blob/main/CONTRIBUTING.md) and
the [Code of
Conduct](https://github.com/rerun-io/rerun/blob/main/CODE_OF_CONDUCT.md)

<!-- This line will get updated when the PR build summary job finishes.
-->
PR Build Summary: https://build.rerun.io/pr/2251

Cargo.toml

@@ -49,6 +49,7 @@ re_tuid = { path = "crates/re_tuid", version = "0.7.0-alpha.0", default-features
 re_ui = { path = "crates/re_ui", version = "0.7.0-alpha.0", default-features = false }
 re_viewer = { path = "crates/re_viewer", version = "0.7.0-alpha.0", default-features = false }
 re_viewer_context = { path = "crates/re_viewer_context", version = "0.7.0-alpha.0", default-features = false }
+re_viewport = { path = "crates/re_viewport", version = "0.7.0-alpha.0", default-features = false }
 re_web_viewer_server = { path = "crates/re_web_viewer_server", version = "0.7.0-alpha.0", default-features = false }
 re_ws_comms = { path = "crates/re_ws_comms", version = "0.7.0-alpha.0", default-features = false }
 rerun = { path = "crates/rerun", version = "0.7.0-alpha.0", default-features = false }

crates/re_arrow_store/src/store_helpers.rs

@@ -48,6 +48,27 @@ impl DataStore {
         component
     }
 
+    /// Call `query_latest_component` at the given path, walking up the hierarchy until an instance is found.
+    pub fn query_latest_component_at_closest_ancestor<C: DeserializableComponent>(
+        &self,
+        entity_path: &EntityPath,
+        query: &LatestAtQuery,
+    ) -> Option<(EntityPath, C)>
+    where
+        for<'b> &'b C::ArrayType: IntoIterator,
+    {
+        crate::profile_function!();
+
+        let mut cur_path = Some(entity_path.clone());
+        while let Some(path) = cur_path {
+            if let Some(component) = self.query_latest_component::<C>(&path, query) {
+                return Some((path, component));
+            }
+            cur_path = path.parent();
+        }
+        None
+    }
+
     /// Get the latest value for a given [`re_log_types::Component`], assuming it is timeless.
     ///
     /// This assumes that the row we get from the store only contains a single instance for this

crates/re_viewer/Cargo.toml

@@ -45,21 +45,15 @@ re_data_ui.workspace = true
 re_error.workspace = true
 re_format.workspace = true
 re_log_encoding = { workspace = true, features = ["decoder", "encoder"] }
-re_log_types = { workspace = true, features = ["ecolor", "glam", "image"] }
+re_log_types = { workspace = true, features = ["ecolor", "image"] }
 re_log.workspace = true
 re_memory.workspace = true
-re_query.workspace = true
-re_renderer = { workspace = true, default-features = false, features = [
-  "arrow",
-  "import-gltf",
-  "import-obj",
-  "serde",
-] }
+re_renderer = { workspace = true, default-features = false }
 re_smart_channel.workspace = true
-re_tensor_ops.workspace = true
 re_time_panel.workspace = true
 re_ui = { workspace = true, features = ["eframe"] }
 re_viewer_context.workspace = true
+re_viewport.workspace = true
 re_ws_comms = { workspace = true, features = ["client"] }
 
 # Internal (optional):
@@ -71,7 +65,6 @@ ahash.workspace = true
 anyhow.workspace = true
 arrow2.workspace = true
 arrow2_convert.workspace = true
-bytemuck = { version = "1.11", features = ["extern_crate_alloc"] }
 cfg-if.workspace = true
 eframe = { workspace = true, default-features = false, features = [
   "default_fonts",
@@ -80,30 +73,15 @@ eframe = { workspace = true, default-features = false, features = [
   "wgpu",
 ] }
 egui.workspace = true
-egui_extras.workspace = true
-egui_tiles.workspace = true
 egui-wgpu.workspace = true
-enumset.workspace = true
-glam = { workspace = true, features = [
-  "mint",
-] } # can't update glam until a new version of `macaw` is released
-half.workspace = true
 image = { workspace = true, default-features = false, features = [
   "jpeg",
   "png",
 ] }
 itertools = { workspace = true }
-lazy_static.workspace = true
-macaw = { workspace = true, features = ["with_serde"] }
-ndarray = "0.15"
-nohash-hasher = "0.2"
 poll-promise = "0.2"
 rfd.workspace = true
-rmp-serde = { version = "1.1" }
 serde = { version = "1", features = ["derive"] }
-slotmap.workspace = true
-smallvec = { workspace = true, features = ["serde"] }
-thiserror.workspace = true
 time = { workspace = true, features = ["formatting"] }
 web-time.workspace = true
 wgpu.workspace = true

crates/re_viewer/src/app.rs

@@ -5,6 +5,7 @@ use anyhow::Context;
 use egui::NumExt as _;
 use itertools::Itertools as _;
 use poll_promise::Promise;
+use re_viewport::ViewportState;
 use web_time::Instant;
 
 use re_arrow_store::{DataStoreConfig, DataStoreStats};
@@ -18,10 +19,7 @@ use re_viewer_context::{
     AppOptions, Caches, ComponentUiRegistry, PlayState, RecordingConfig, ViewerContext,
 };
 
-use crate::{
-    ui::{Blueprint, ViewportState},
-    viewer_analytics::ViewerAnalytics,
-};
+use crate::{ui::Blueprint, viewer_analytics::ViewerAnalytics};
 
 #[cfg(not(target_arch = "wasm32"))]
 use re_log_types::TimeRangeF;

crates/re_viewer/src/blueprint_components/mod.rs

@@ -1,6 +1,3 @@
 //! Potentially user-facing components to be used in blueprints.
-// TODO(jleibs): These should live in their own crate so we don't need a
-//               viewer dep in order to make use of them.
+
 pub mod panel;
-pub mod space_view;
-pub mod viewport;

crates/re_viewer/src/lib.rs

@@ -6,19 +6,15 @@
 mod app;
 pub mod blueprint_components;
 pub mod env_vars;
-pub mod math;
-mod misc;
+#[cfg(not(target_arch = "wasm32"))]
+mod profiler;
 mod remote_viewer_app;
 mod ui;
 mod viewer_analytics;
 
-pub(crate) use misc::mesh_loader;
 use re_log_types::PythonVersion;
 pub(crate) use ui::{memory_panel, selection_panel};
 
-// TODO(jleibs): Do we want to expose this
-pub use ui::{SpaceViewBlueprint, ViewCategory};
-
 pub use app::{App, StartupOptions};
 pub use remote_viewer_app::RemoteViewerApp;
 
@@ -37,7 +33,7 @@ mod native;
 pub use native::{run_native_app, run_native_viewer_with_messages};
 
 #[cfg(not(target_arch = "wasm32"))]
-pub use misc::profiler::Profiler;
+pub use profiler::Profiler;
 
 // ----------------------------------------------------------------------------
 // When compiling for web: