Add Ellipsoids3D archetype.

Cargo.lock

@@ -1177,6 +1177,21 @@ dependencies = [
  "wasm-bindgen",
 ]
 
+[[package]]
+name = "const_soft_float"
+version = "0.1.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "87ca1caa64ef4ed453e68bb3db612e51cf1b2f5b871337f0fcab1c8f87cc3dff"
+
+[[package]]
+name = "constgebra"
+version = "0.1.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e1aaf9b65849a68662ac6c0810c8893a765c960b907dd7cfab9c4a50bf764fbc"
+dependencies = [
+ "const_soft_float",
+]
+
 [[package]]
 name = "convert_case"
 version = "0.6.0"
@@ -2488,6 +2503,16 @@ version = "0.4.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7f24254aa9a54b5c858eaee2f5bccdb46aaf0e486a595ed5fd8f86ba55232a70"
 
+[[package]]
+name = "hexasphere"
+version = "14.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6c64d70ed6295005e2bc5a6f624300cfd6d49908da76b3654c4cbdb1d4222705"
+dependencies = [
+ "constgebra",
+ "glam",
+]
+
 [[package]]
 name = "hexf-parse"
 version = "0.2.1"
@@ -4919,6 +4944,7 @@ dependencies = [
  "criterion",
  "egui",
  "glam",
+ "hexasphere",
  "itertools 0.13.0",
  "mimalloc",
  "nohash-hasher",
@@ -6411,9 +6437,9 @@ dependencies = [
 
 [[package]]
 name = "target-lexicon"
-version = "0.12.15"
+version = "0.12.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4873307b7c257eddcb50c9bedf158eb669578359fb28428bef438fec8e6ba7c2"
+checksum = "e1fc403891a21bcfb7c37834ba66a547a8f402146eba7265b5a6d88059c9ff2f"
 
 [[package]]
 name = "tempfile"

Cargo.toml

@@ -172,6 +172,7 @@ glam = "0.28"
 glob = "0.3"
 gltf = "1.1"
 half = "2.3.1"
+hexasphere = "14.0.0"
 image = { version = "0.25", default-features = false }
 indent = "0.1"
 indexmap = "2.1" # Version chosen to align with other dependencies

crates/store/re_types/definitions/rerun/archetypes.fbs

@@ -8,6 +8,7 @@ include "./archetypes/boxes3d.fbs";
 include "./archetypes/clear.fbs";
 include "./archetypes/depth_image.fbs";
 include "./archetypes/disconnected_space.fbs";
+include "./archetypes/ellipsoids.fbs";
 include "./archetypes/image.fbs";
 include "./archetypes/line_strips2d.fbs";
 include "./archetypes/line_strips3d.fbs";

crates/store/re_types/definitions/rerun/archetypes/ellipsoids.fbs

@@ -0,0 +1,63 @@
+include "fbs/attributes.fbs";
+include "rust/attributes.fbs";
+include "cpp/attributes.fbs";
+
+include "rerun/datatypes.fbs";
+include "rerun/components.fbs";
+
+namespace rerun.archetypes;
+
+// ---
+
+/// 3D ellipsoids or spheres.
+///
+/// This archetype is for ellipsoids or spheres whose size is a key part of the data
+/// (e.g. a bounding sphere).
+/// For points whose radii are for the sake of visualization, use `Points3D` instead.
+///
+/// Currently, ellipsoids are always rendered as wireframes.
+/// Opaque and transparent rendering will be supported later.
+///
+/// \example archetypes/ellipsoid_batch !api title="Batch of ellipsoids"
+table Ellipsoids (
+  "attr.rust.derive": "PartialEq",
+  "attr.rust.new_pub_crate",
+  "attr.cpp.no_field_ctors",
+  "attr.docs.category": "Spatial 3D",
+  "attr.docs.view_types": "Spatial3DView, Spatial2DView: if logged above active projection"
+) {
+  // --- Required ---
+
+  /// For each ellipsoid, half of its size on its three axes.
+  ///
+  /// If all components are equal, then it is a sphere with that radius.
+  half_sizes: [rerun.components.HalfSize3D] ("attr.rerun.component_required", order: 1000);
+
+  // --- Recommended ---
+
+  /// Optional center positions of the ellipsoids.
+  ///
+  /// If not specified, the centers will be at (0, 0, 0).
+  centers: [rerun.components.Position3D] ("attr.rerun.component_recommended", nullable, order: 2000);
+
+  /// Optional rotations of the ellipsoids.
+  ///
+  /// If not specified, the axes of the ellipsoid align with the axes of the coordinate system.
+  rotations: [rerun.components.Rotation3D] ("attr.rerun.component_recommended", nullable, order: 2100);
+
+  /// Optional colors for the ellipsoids.
+  colors: [rerun.components.Color] ("attr.rerun.component_recommended", nullable, order: 2200);
+
+  // --- Optional ---
+
+  /// Optional radii for the lines used when the ellipsoid is rendered as a wireframe.
+  line_radii: [rerun.components.Radius] ("attr.rerun.component_optional", nullable, order: 3000);
+
+  /// Optional text labels for the ellipsoids.
+  labels: [rerun.components.Text] ("attr.rerun.component_optional", nullable, order: 3100);
+
+  /// Optional `ClassId`s for the ellipsoids.
+  ///
+  /// The class ID provides colors and labels if not specified explicitly.
+  class_ids: [rerun.components.ClassId] ("attr.rerun.component_optional", nullable, order: 3200);
+}