recenter on show

src/backend/common.rs

@@ -97,7 +97,7 @@ where
         self.overlays.values_mut()
     }
 
-    pub fn show_hide(&mut self) {
+    pub fn show_hide(&mut self, app: &mut AppState) {
         let any_shown = self
             .overlays
             .values()
@@ -106,6 +106,9 @@ where
         self.overlays.values_mut().for_each(|o| {
             if o.state.show_hide {
                 o.state.want_visible = !any_shown;
+                if o.state.want_visible && app.session.recenter_on_show {
+                    o.state.reset(app, false);
+                }
             }
         })
     }

src/backend/input.rs

@@ -421,7 +421,6 @@ impl Pointer {
                     grab_data.offset.z -= self.now.scroll * 0.05;
                 }
                 _ => {
-                    log::warn!("scale: {}", self.now.scroll);
                     overlay.state.transform.matrix3 = overlay
                         .state
                         .transform
@@ -433,7 +432,9 @@ impl Pointer {
             overlay.state.realign(hmd);
             overlay.state.dirty = true;
         } else {
-            overlay.state.spawn_point = overlay.state.transform.translation.into();
+            overlay.state.spawn_point = hmd
+                .inverse()
+                .transform_point3a(overlay.state.transform.translation);
             self.interaction.grabbed = None;
             log::info!("Hand {}: dropped {}", self.idx, overlay.state.name);
         }

src/backend/openvr/mod.rs

@@ -153,7 +153,7 @@ pub fn openvr_run(running: Arc<AtomicBool>) -> Result<(), BackendError> {
             .iter()
             .any(|p| p.now.show_hide && !p.before.show_hide)
         {
-            overlays.show_hide();
+            overlays.show_hide(&mut state);
         }
 
         overlays

src/backend/openxr/mod.rs

@@ -200,7 +200,7 @@ pub fn openxr_run(running: Arc<AtomicBool>) -> Result<(), BackendError> {
             .any(|p| p.now.show_hide && !p.before.show_hide)
         {
             if show_hide_counter.click() {
-                overlays.show_hide();
+                overlays.show_hide(&mut app_state);
             }
         }
 

src/backend/overlay.rs

@@ -103,15 +103,20 @@ impl OverlayState {
         }
     }
 
-    pub fn reset(&mut self, app: &mut AppState) {
+    pub fn reset(&mut self, app: &mut AppState, reset_scale: bool) {
         let translation = app.input_state.hmd.transform_point3a(self.spawn_point);
+        let scale = if reset_scale {
+            self.spawn_scale
+        } else {
+            self.transform.x_axis.length()
+        };
         self.transform = Affine3A::from_scale_rotation_translation(
-            Vec3::ONE * self.spawn_scale,
+            Vec3::ONE * scale,
             Quat::IDENTITY,
             translation.into(),
         );
-
         self.realign(&app.input_state.hmd);
+        self.dirty = true;
     }
 
     pub fn realign(&mut self, hmd: &Affine3A) {
@@ -160,7 +165,7 @@ where
     T: Default,
 {
     pub fn init(&mut self, app: &mut AppState) {
-        self.state.reset(app);
+        self.state.reset(app, true);
         self.backend.init(app);
     }
     pub fn render(&mut self, app: &mut AppState) {