auto-hide watch

src/backend/openvr/mod.rs

@@ -24,6 +24,7 @@ use crate::{
         osc::OscSender,
     },
     graphics::WlxGraphics,
+    overlays::watch::watch_fade,
     state::AppState,
 };
 
@@ -179,6 +180,7 @@ pub fn openvr_run(running: Arc<AtomicBool>) -> Result<(), BackendError> {
             .iter_mut()
             .for_each(|o| o.state.auto_movement(&mut state));
 
+        watch_fade(&mut state, &mut overlays);
         space_mover.update(&mut chaperone_mgr, &mut overlays, &state);
 
         let lengths_haptics = interact(&mut overlays, &mut state);

src/backend/openxr/mod.rs

@@ -18,6 +18,7 @@ use crate::{
         osc::OscSender,
     },
     graphics::WlxGraphics,
+    overlays::watch::watch_fade,
     state::AppState,
 };
 
@@ -210,6 +211,8 @@ pub fn openxr_run(running: Arc<AtomicBool>) -> Result<(), BackendError> {
             }
         }
 
+        watch_fade(&mut app_state, &mut overlays);
+
         overlays
             .iter_mut()
             .for_each(|o| o.after_input(&mut app_state));

src/config.rs

@@ -27,6 +27,10 @@ fn def_one() -> f32 {
     1.0
 }
 
+fn def_half() -> f32 {
+    0.5
+}
+
 fn def_osc_port() -> u16 {
     9000
 }
@@ -48,6 +52,9 @@ pub struct GeneralConfig {
     #[serde(default = "def_one")]
     pub watch_scale: f32,
 
+    #[serde(default = "def_half")]
+    pub watch_view_angle: f32,
+
     #[serde(default = "def_pw_tokens")]
     pub pw_tokens: Vec<(String, String)>,
 

src/overlays/watch.rs

@@ -7,12 +7,12 @@ use std::{
 
 use chrono::Local;
 use chrono_tz::Tz;
-use glam::{vec2, Affine2, Vec3};
+use glam::{vec2, Affine2, Vec3, Vec3A};
 use serde::Deserialize;
 
 use crate::{
     backend::{
-        common::{OverlaySelector, TaskType},
+        common::{OverlayContainer, OverlaySelector, TaskType},
         input::PointerMode,
         overlay::{OverlayData, OverlayState, RelativeTo},
     },
@@ -595,3 +595,26 @@ enum LeftRight {
     Left,
     Right,
 }
+
+pub fn watch_fade<D>(app: &mut AppState, overlays: &mut OverlayContainer<D>)
+where
+    D: Default,
+{
+    let watch = overlays
+        .mut_by_selector(&OverlaySelector::Name(WATCH_NAME.into()))
+        .unwrap();
+
+    let to_hmd = (watch.state.transform.translation - app.input_state.hmd.translation).normalize();
+    let watch_normal = watch
+        .state
+        .transform
+        .transform_vector3a(Vec3A::NEG_Z)
+        .normalize();
+    let dot = to_hmd.dot(watch_normal);
+
+    if dot < app.session.config.watch_view_angle {
+        watch.state.want_visible = false;
+    } else {
+        watch.state.want_visible = true;
+    }
+}

src/res/watch.yaml

@@ -20,12 +20,18 @@
 
 # render resolution of the watch
 
+watch_view_angle: 0.5 # 0 = 90 deg, 1 = 0 deg
+
+# TODO
 watch_hand: Left
 
+# TODO
 watch_offset: []
 
+# TODO
 watch_rotation: []
 
+# TODO
 watch_size: [400, 200]
 
 watch_elements: