feat: spatial bounds

src/nodes/drawable/lines.rs

@@ -14,7 +14,7 @@ use prisma::{Flatten, Lerp, Rgba};
 use serde::Deserialize;
 use stardust_xr::{schemas::flex::deserialize, values::Transform};
 use std::{collections::VecDeque, sync::Arc};
-use stereokit::{Color128, LinePoint as SkLinePoint, StereoKitDraw};
+use stereokit::{bounds_grow_to_fit_pt, Bounds, Color128, LinePoint as SkLinePoint, StereoKitDraw};
 
 use super::Drawable;
 
@@ -45,6 +45,16 @@ impl Lines {
 			"Internal: Node already has a drawable attached!"
 		);
 
+		let _ = node.spatial.get().unwrap().bounding_box_calc.set(|node| {
+			let mut bounds = Bounds::default();
+			let Some(Drawable::Lines(lines)) = node.drawable.get() else {return bounds};
+			for point in &lines.data.lock().points {
+				bounds = bounds_grow_to_fit_pt(bounds, point.point);
+			}
+
+			bounds
+		});
+
 		let lines = LINES_REGISTRY.add(Lines {
 			enabled: node.enabled.clone(),
 			space: node.get_aspect("Lines", "spatial", |n| &n.spatial)?.clone(),

src/nodes/drawable/model.rs

@@ -22,7 +22,8 @@ use std::path::PathBuf;
 use std::sync::{Arc, Weak};
 use stereokit::named_colors::WHITE;
 use stereokit::{
-	Color128, Material, Model as SKModel, RenderLayer, Shader, StereoKitDraw, StereoKitMultiThread,
+	Bounds, Color128, Material, Model as SKModel, RenderLayer, Shader, StereoKitDraw,
+	StereoKitMultiThread,
 };
 
 static MODEL_REGISTRY: Registry<Model> = Registry::new();
@@ -182,6 +183,16 @@ impl ModelPart {
 			false,
 		)
 		.ok()?;
+
+		let _ = node.spatial.get().unwrap().bounding_box_calc.set(|node| {
+			let Some(Drawable::ModelPart(model_part)) = node.drawable.get() else {return Bounds::default()};
+			let Some(sk) = SK_MULTITHREAD.get() else {return Bounds::default()};
+			let Some(model) = model_part.model.upgrade() else {return Bounds::default()};
+			let Some(sk_model) = model.sk_model.get() else {return Bounds::default()};
+			let Some(sk_mesh) = sk.model_node_get_mesh(sk_model, model_part.id) else {return Bounds::default()};
+			sk.mesh_get_bounds(sk_mesh)
+		});
+
 		let model_part = Arc::new(ModelPart {
 			id,
 			path: part_path,