Spawn Bevy canvas at full viewport size

studio/src/lib.rs

@@ -1,24 +1,31 @@
 #![allow(clippy::type_complexity)]
 
 use bevy::prelude::*;
+use orbit_cam::{OrbitCam, OrbitCamPlugin};
+use test_scene::TestScenePlugin;
+use ui::UiLayerPlugin;
+use viewport::ViewportSize;
 use wasm_bindgen::prelude::*;
 
 mod orbit_cam;
 mod test_scene;
 mod ui;
-
-use orbit_cam::{OrbitCam, OrbitCamPlugin};
-use test_scene::TestScenePlugin;
-use ui::UiLayerPlugin;
+mod viewport;
 
 #[wasm_bindgen]
-pub fn init() {
+pub fn init(viewport_size: ViewportSize) {
     #[cfg(target_arch = "wasm32")]
     console_error_panic_hook::set_once();
 
     App::new()
         .add_plugins((
-            DefaultPlugins,
+            DefaultPlugins.set(WindowPlugin {
+                primary_window: Some(Window {
+                    resolution: viewport_size.into(),
+                    ..default()
+                }),
+                ..default()
+            }),
             OrbitCamPlugin,
             TestScenePlugin,
             UiLayerPlugin,

studio/src/main.rs

@@ -1,3 +1,3 @@
 fn main() {
-    studio::init();
+    studio::init(Default::default());
 }

studio/src/viewport.rs

@@ -0,0 +1,37 @@
+use bevy::window::WindowResolution;
+use wasm_bindgen::prelude::*;
+
+#[wasm_bindgen]
+pub struct ViewportSize {
+    pub width: f32,
+    pub height: f32,
+}
+
+#[wasm_bindgen]
+impl ViewportSize {
+    #[wasm_bindgen(constructor)]
+    pub fn new(width: f32, height: f32) -> Self {
+        Self { width, height }
+    }
+}
+
+impl Default for ViewportSize {
+    fn default() -> Self {
+        WindowResolution::default().into()
+    }
+}
+
+impl From<ViewportSize> for WindowResolution {
+    fn from(value: ViewportSize) -> Self {
+        Self::new(value.width, value.height)
+    }
+}
+
+impl From<WindowResolution> for ViewportSize {
+    fn from(value: WindowResolution) -> Self {
+        Self {
+            width: value.width(),
+            height: value.height(),
+        }
+    }
+}