feat(objects): sk controller for input method tip

src/objects/input/sk_controller.rs

@@ -0,0 +1,41 @@
+use crate::nodes::{
+	input::{tip::Tip, InputMethod, InputType},
+	spatial::Spatial,
+};
+use glam::Mat4;
+use portable_atomic::Ordering;
+use std::sync::{Arc, Weak};
+use stereokit::{input::Handed, StereoKit};
+
+pub struct SkController {
+	tip: Arc<InputMethod>,
+	handed: Handed,
+}
+impl SkController {
+	pub fn new(handed: Handed) -> Self {
+		SkController {
+			tip: InputMethod::new(
+				Spatial::new(Weak::new(), None, Mat4::IDENTITY),
+				InputType::Tip(Tip::default()),
+			),
+			handed,
+		}
+	}
+	pub fn update(&mut self, sk: &StereoKit) {
+		if let InputType::Tip(tip) = &mut *self.tip.specialization.lock() {
+			let controller = sk.input_controller(self.handed);
+			*self.tip.enabled.lock() = controller.tracked.is_active();
+			if controller.tracked.is_active() {
+				self.tip.spatial.set_local_transform_components(
+					None,
+					Some(controller.pose.position.into()),
+					Some(controller.pose.orientation.into()),
+					None,
+				);
+			}
+
+			tip.select.store(controller.trigger, Ordering::Relaxed);
+			tip.grab.store(controller.grip, Ordering::Relaxed);
+		}
+	}
+}