feat: anchor point for working set

src/overlays/anchor.rs

@@ -0,0 +1,31 @@
+use glam::Vec3A;
+use once_cell::sync::Lazy;
+use std::sync::Arc;
+
+use crate::backend::overlay::{OverlayData, OverlayState};
+use crate::config::{load_known_yaml, ConfigType};
+use crate::gui::modular::{modular_canvas, ModularUiConfig};
+use crate::state::AppState;
+
+pub static ANCHOR_NAME: Lazy<Arc<str>> = Lazy::new(|| Arc::from("anchor"));
+
+pub fn create_anchor<O>(state: &AppState) -> anyhow::Result<OverlayData<O>>
+where
+    O: Default,
+{
+    let config = load_known_yaml::<ModularUiConfig>(ConfigType::Anchor);
+
+    Ok(OverlayData {
+        state: OverlayState {
+            name: ANCHOR_NAME.clone(),
+            want_visible: false,
+            interactable: false,
+            grabbable: false,
+            spawn_scale: config.width,
+            spawn_point: Vec3A::NEG_Z * 0.5,
+            ..Default::default()
+        },
+        backend: Box::new(modular_canvas(&config.size, &config.elements, state)?),
+        ..Default::default()
+    })
+}