Auto merge of #23292 - Manishearth:input, r=asajeffrey

Add support for XRInputSource and target ray spaces

Untested, but compiles.

r? @jdm or @asajeffrey

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1 files changed, 33 insertions, 6 deletions

diff --git a/components/script/dom/xrspace.rs b/components/script/dom/xrspace.rs
index 8948ac03c8e..30f9246c354 100644
--- a/components/script/dom/xrspace.rs
+++ b/components/script/dom/xrspace.rs
@@ -5,20 +5,22 @@
 use crate::dom::bindings::codegen::Bindings::XRSpaceBinding;
 use crate::dom::bindings::inheritance::Castable;
 use crate::dom::bindings::reflector::reflect_dom_object;
-use crate::dom::bindings::root::{Dom, DomRoot};
+use crate::dom::bindings::root::{Dom, DomRoot, MutNullableDom};
 use crate::dom::eventtarget::EventTarget;
 use crate::dom::globalscope::GlobalScope;
+use crate::dom::xrinputsource::XRInputSource;
 use crate::dom::xrreferencespace::XRReferenceSpace;
 use crate::dom::xrsession::XRSession;
 use dom_struct::dom_struct;
 use euclid::{RigidTransform3D, Rotation3D, Vector3D};
-use webvr_traits::WebVRFrameData;
+use webvr_traits::{WebVRFrameData, WebVRPose};
 
 #[dom_struct]
 pub struct XRSpace {
     eventtarget: EventTarget,
     session: Dom<XRSession>,
     is_viewerspace: bool,
+    input_source: MutNullableDom<XRInputSource>,
 }
 
 impl XRSpace {
@@ -27,6 +29,7 @@ impl XRSpace {
             eventtarget: EventTarget::new_inherited(),
             session: Dom::from_ref(session),
             is_viewerspace: false,
+            input_source: Default::default(),
         }
     }
 
@@ -35,6 +38,7 @@ impl XRSpace {
             eventtarget: EventTarget::new_inherited(),
             session: Dom::from_ref(session),
             is_viewerspace: true,
+            input_source: Default::default(),
         }
     }
 
@@ -45,6 +49,27 @@ impl XRSpace {
             XRSpaceBinding::Wrap,
         )
     }
+
+    fn new_inputspace_inner(session: &XRSession, input: &XRInputSource) -> XRSpace {
+        XRSpace {
+            eventtarget: EventTarget::new_inherited(),
+            session: Dom::from_ref(session),
+            is_viewerspace: false,
+            input_source: MutNullableDom::new(Some(input)),
+        }
+    }
+
+    pub fn new_inputspace(
+        global: &GlobalScope,
+        session: &XRSession,
+        input: &XRInputSource,
+    ) -> DomRoot<XRSpace> {
+        reflect_dom_object(
+            Box::new(XRSpace::new_inputspace_inner(session, input)),
+            global,
+            XRSpaceBinding::Wrap,
+        )
+    }
 }
 
 impl XRSpace {
@@ -57,16 +82,18 @@ impl XRSpace {
         if let Some(reference) = self.downcast::<XRReferenceSpace>() {
             reference.get_pose(base_pose)
         } else if self.is_viewerspace {
-            XRSpace::viewer_pose_from_frame_data(base_pose)
+            XRSpace::pose_to_transform(&base_pose.pose)
+        } else if let Some(source) = self.input_source.get() {
+            XRSpace::pose_to_transform(&source.pose())
         } else {
             unreachable!()
         }
     }
 
-    pub fn viewer_pose_from_frame_data(data: &WebVRFrameData) -> RigidTransform3D<f64> {
-        let pos = data.pose.position.unwrap_or([0., 0., 0.]);
+    pub fn pose_to_transform(pose: &WebVRPose) -> RigidTransform3D<f64> {
+        let pos = pose.position.unwrap_or([0., 0., 0.]);
         let translation = Vector3D::new(pos[0] as f64, pos[1] as f64, pos[2] as f64);
-        let orient = data.pose.orientation.unwrap_or([0., 0., 0., 0.]);
+        let orient = pose.orientation.unwrap_or([0., 0., 0., 0.]);
         let rotation = Rotation3D::quaternion(
             orient[0] as f64,
             orient[1] as f64,