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Make poses nullable

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This commit is contained in:
Manish Goregaokar 2019-10-02 19:01:55 -07:00
parent 0780fb0693
commit 1062249fd8
3 changed files with 14 additions and 5 deletions
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6
components/script/dom/xrspace.rs
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@ -57,9 +57,9 @@ impl XRSpace {
/// The reference origin used is common between all
/// get_pose calls for spaces from the same device, so this can be used to compare
/// with other spaces
pub fn get_pose(&self, base_pose: &Frame) -> ApiPose {
pub fn get_pose(&self, base_pose: &Frame) -> Option<ApiPose> {
if let Some(reference) = self.downcast::<XRReferenceSpace>() {
reference.get_pose(base_pose)
Some(reference.get_pose(base_pose))
} else if let Some(source) = self.input_source.get() {
// XXXManishearth we should be able to request frame information
// for inputs when necessary instead of always loading it
@ -72,7 +72,7 @@ impl XRSpace {
.iter()
.find(|i| i.id == id)
.expect("no input found");
cast_transform(frame.target_ray_origin)
Some(cast_transform(frame.target_ray_origin))
} else {
unreachable!()
}