Fill in XR frame/pose/view implementations

1 files changed, 41 insertions, 5 deletions

diff --git a/components/script/dom/xrview.rs b/components/script/dom/xrview.rs
index f9d538cb946..5fd7dfcae2e 100644
--- a/components/script/dom/xrview.rs
+++ b/components/script/dom/xrview.rs
@@ -7,14 +7,20 @@ use crate::dom::bindings::codegen::Bindings::XRViewBinding::{XREye, XRViewMethod
 use crate::dom::bindings::reflector::{reflect_dom_object, Reflector};
 use crate::dom::bindings::root::{Dom, DomRoot};
 use crate::dom::globalscope::GlobalScope;
+use crate::dom::vrframedata::create_typed_array;
 use crate::dom::xrsession::XRSession;
 use dom_struct::dom_struct;
+use js::jsapi::{Heap, JSContext, JSObject};
+use std::ptr::NonNull;
+use webvr_traits::WebVRFrameData;
 
 #[dom_struct]
 pub struct XRView {
     reflector_: Reflector,
     session: Dom<XRSession>,
     eye: XREye,
+    proj: Heap<*mut JSObject>,
+    view: Heap<*mut JSObject>,
 }
 
 impl XRView {
@@ -22,16 +28,34 @@ impl XRView {
         XRView {
             reflector_: Reflector::new(),
             session: Dom::from_ref(session),
-            eye
+            eye,
+            proj: Heap::default(),
+            view: Heap::default(),
         }
     }
 
-    pub fn new(global: &GlobalScope, session: &XRSession, eye: XREye) -> DomRoot<XRView> {
-        reflect_dom_object(
+    pub fn new(
+        global: &GlobalScope,
+        session: &XRSession,
+        eye: XREye,
+        data: &WebVRFrameData,
+    ) -> DomRoot<XRView> {
+        let ret = reflect_dom_object(
             Box::new(XRView::new_inherited(session, eye)),
             global,
             XRViewBinding::Wrap,
-        )
+        );
+
+        let (proj, view) = if eye == XREye::Left {
+            (&data.left_projection_matrix, &data.left_view_matrix)
+        } else {
+            (&data.right_projection_matrix, &data.right_view_matrix)
+        };
+
+        let cx = global.get_cx();
+        create_typed_array(cx, proj, &ret.proj);
+        create_typed_array(cx, view, &ret.view);
+        ret
     }
 
     pub fn session(&self) -> &XRSession {
@@ -44,4 +68,16 @@ impl XRViewMethods for XRView {
     fn Eye(&self) -> XREye {
         self.eye
     }
-}
\ No newline at end of file
+
+    #[allow(unsafe_code)]
+    /// https://immersive-web.github.io/webxr/#dom-xrview-projectionmatrix
+    unsafe fn ProjectionMatrix(&self, _cx: *mut JSContext) -> NonNull<JSObject> {
+        NonNull::new_unchecked(self.proj.get())
+    }
+
+    #[allow(unsafe_code)]
+    /// https://immersive-web.github.io/webxr/#dom-xrview-projectionmatrix
+    unsafe fn ViewMatrix(&self, _cx: *mut JSContext) -> NonNull<JSObject> {
+        NonNull::new_unchecked(self.view.get())
+    }
+}