feat: eye gaze support

src/objects/input/eye_pointer.rs

@@ -0,0 +1,56 @@
+use crate::{
+	core::client::INTERNAL_CLIENT,
+	nodes::{
+		input::{pointer::Pointer, InputMethod, InputType},
+		spatial::Spatial,
+		Node,
+	},
+};
+use color_eyre::eyre::Result;
+use glam::Mat4;
+use nanoid::nanoid;
+use serde::Serialize;
+use stardust_xr::schemas::{flat::Datamap, flex::flexbuffers};
+use std::sync::Arc;
+use stereokit::StereoKitMultiThread;
+use tracing::instrument;
+
+#[derive(Debug, Clone, Serialize)]
+pub struct KeyboardEvent {
+	pub keyboard: String,
+	pub keymap: Option<String>,
+	pub keys_up: Option<Vec<u32>>,
+	pub keys_down: Option<Vec<u32>>,
+}
+
+pub struct EyePointer {
+	spatial: Arc<Spatial>,
+	pointer: Arc<InputMethod>,
+}
+impl EyePointer {
+	pub fn new() -> Result<Self> {
+		let node = Node::create(&INTERNAL_CLIENT, "", &nanoid!(), false).add_to_scenegraph()?;
+		let spatial = Spatial::add_to(&node, None, Mat4::IDENTITY, false).unwrap();
+		let pointer =
+			InputMethod::add_to(&node, InputType::Pointer(Pointer::default()), None).unwrap();
+
+		Ok(EyePointer { spatial, pointer })
+	}
+	#[instrument(level = "debug", name = "Update Flatscreen Pointer Ray", skip_all)]
+	pub fn update(&self, sk: &impl StereoKitMultiThread) {
+		let ray = sk.input_eyes();
+		self.spatial
+			.set_local_transform(Mat4::from_rotation_translation(
+				ray.orientation,
+				ray.position,
+			));
+		{
+			// Set pointer input datamap
+			let mut fbb = flexbuffers::Builder::default();
+			let mut map = fbb.start_map();
+			map.push("eye", 2);
+			map.end_map();
+			*self.pointer.datamap.lock() = Datamap::new(fbb.take_buffer()).ok();
+		}
+	}
+}

src/objects/input/mod.rs

@@ -1,3 +1,4 @@
+pub mod eye_pointer;
 pub mod mouse_pointer;
 pub mod sk_controller;
 pub mod sk_hand;