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Support nullable origins and floors

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This commit is contained in:
Manish Goregaokar 2019-12-11 18:16:41 -08:00
parent 0bace66f70
commit 322463450d
7 changed files with 51 additions and 27 deletions
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22
components/script/dom/fakexrdevice.rs
View file

@ -134,7 +134,7 @@ impl FakeXRDeviceMethods for FakeXRDevice {
Ok(())
}
/// https://github.com/immersive-web/webxr-test-api/blob/master/explainer.md
/// https://immersive-web.github.io/webxr-test-api/#dom-fakexrdevice-setviewerorigin
fn SetViewerOrigin(
&self,
origin: &FakeXRRigidTransformInit,
@ -142,7 +142,25 @@ impl FakeXRDeviceMethods for FakeXRDevice {
) -> Fallible<()> {
let _ = self
.sender
.send(MockDeviceMsg::SetViewerOrigin(get_origin(origin)?));
.send(MockDeviceMsg::SetViewerOrigin(Some(get_origin(origin)?)));
Ok(())
}
/// https://immersive-web.github.io/webxr-test-api/#dom-fakexrdevice-clearviewerorigin
fn ClearViewerOrigin(&self) {
let _ = self.sender.send(MockDeviceMsg::SetViewerOrigin(None));
}
/// https://immersive-web.github.io/webxr-test-api/#dom-fakexrdevice-clearfloororigin
fn ClearFloorOrigin(&self) {
let _ = self.sender.send(MockDeviceMsg::SetFloorOrigin(None));
}
/// https://immersive-web.github.io/webxr-test-api/#dom-fakexrdevice-setfloororigin
fn SetFloorOrigin(&self, origin: &FakeXRRigidTransformInit) -> Fallible<()> {
let _ = self
.sender
.send(MockDeviceMsg::SetFloorOrigin(Some(get_origin(origin)?)));
Ok(())
}

5
components/script/dom/webidls/FakeXRDevice.webidl
View file

@ -13,8 +13,11 @@ interface FakeXRDevice {
// // behaves as if device was disconnected
// Promise<void> disconnect();
// Sets the origin of the viewer
[Throws] void setViewerOrigin(FakeXRRigidTransformInit origin, optional boolean emulatedPosition = false);
void clearViewerOrigin();
[Throws] void setFloorOrigin(FakeXRRigidTransformInit origin);
void clearFloorOrigin();
// // Simulates devices focusing and blurring sessions.
// void simulateVisibilityChange(XRVisibilityState);

6
components/script/dom/xrframe.rs
View file

@ -77,7 +77,11 @@ impl XRFrameMethods for XRFrame {
return Err(Error::InvalidState);
}
let pose = reference.get_viewer_pose(&self.data);
let pose = if let Some(pose) = reference.get_viewer_pose(&self.data) {
pose
} else {
return Ok(None);
};
Ok(Some(XRViewerPose::new(&self.global(), &self.session, pose)))
}

30
components/script/dom/xrreferencespace.rs
View file

@ -80,8 +80,8 @@ impl XRReferenceSpace {
///
/// This is equivalent to `get_pose(self).inverse() * get_pose(viewerSpace)` (in column vector notation),
/// however we specialize it to be efficient
pub fn get_viewer_pose(&self, base_pose: &Frame) -> ApiViewerPose {
let pose = self.get_unoffset_viewer_pose(base_pose);
pub fn get_viewer_pose(&self, base_pose: &Frame) -> Option<ApiViewerPose> {
let pose = self.get_unoffset_viewer_pose(base_pose)?;
// in column-vector notation,
// get_viewer_pose(space) = get_pose(space).inverse() * get_pose(viewer_space)
// = (get_unoffset_pose(space) * offset).inverse() * get_pose(viewer_space)
@ -89,14 +89,14 @@ impl XRReferenceSpace {
// = offset.inverse() * get_unoffset_viewer_pose(space)
let offset = self.offset.transform();
let inverse = offset.inverse();
inverse.pre_transform(&pose)
Some(inverse.pre_transform(&pose))
}
/// Gets pose of the viewer with respect to this space
///
/// Does not apply originOffset, use get_viewer_pose instead if you need it
pub fn get_unoffset_viewer_pose(&self, base_pose: &Frame) -> ApiViewerPose {
let viewer_pose: ApiViewerPose = cast_transform(base_pose.transform);
pub fn get_unoffset_viewer_pose(&self, base_pose: &Frame) -> Option<ApiViewerPose> {
let viewer_pose: ApiViewerPose = cast_transform(base_pose.transform?);
// all math is in column-vector notation
// we use the following equation to verify correctness here:
// get_viewer_pose(space) = get_pose(space).inverse() * get_pose(viewer_space)
@ -107,7 +107,7 @@ impl XRReferenceSpace {
// = viewer_pose
// we get viewer poses in eye-level space by default
viewer_pose
Some(viewer_pose)
},
XRReferenceSpaceType::Local_floor => {
// XXXManishearth support getting floor info from stage parameters
@ -118,12 +118,12 @@ impl XRReferenceSpace {
// assume approximate user height of 2 meters
let floor_to_eye: ApiRigidTransform = Vector3D::new(0., 2., 0.).into();
floor_to_eye.pre_transform(&viewer_pose)
Some(floor_to_eye.pre_transform(&viewer_pose))
},
XRReferenceSpaceType::Viewer => {
// This reference space follows the viewer around, so the viewer is
// always at an identity transform with respect to it
RigidTransform3D::identity()
Some(RigidTransform3D::identity())
},
_ => unimplemented!(),
}
@ -134,34 +134,34 @@ impl XRReferenceSpace {
/// 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 {
let pose = self.get_unoffset_pose(base_pose);
pub fn get_pose(&self, base_pose: &Frame) -> Option<ApiPose> {
let pose = self.get_unoffset_pose(base_pose)?;
let offset = self.offset.transform();
// pose is a transform from the unoffset space to native space,
// offset is a transform from offset space to unoffset space,
// we want a transform from unoffset space to native space,
// which is pose * offset in column vector notation
pose.pre_transform(&offset)
Some(pose.pre_transform(&offset))
}
/// Gets pose represented by this space
///
/// Does not apply originOffset, use get_viewer_pose instead if you need it
pub fn get_unoffset_pose(&self, base_pose: &Frame) -> ApiPose {
pub fn get_unoffset_pose(&self, base_pose: &Frame) -> Option<ApiPose> {
match self.ty {
XRReferenceSpaceType::Local => {
// The eye-level pose is basically whatever the headset pose was at t=0, which
// for most devices is (0, 0, 0)
RigidTransform3D::identity()
Some(RigidTransform3D::identity())
},
XRReferenceSpaceType::Local_floor => {
// XXXManishearth support getting floor info from stage parameters
// Assume approximate height of 2m
// the floor-level space is 2m below the eye-level space, which is (0, 0, 0)
Vector3D::new(0., -2., 0.).into()
Some(Vector3D::new(0., -2., 0.).into())
},
XRReferenceSpaceType::Viewer => cast_transform(base_pose.transform),
XRReferenceSpaceType::Viewer => base_pose.transform.map(cast_transform),
_ => unimplemented!(),
}
}

2
components/script/dom/xrspace.rs
View file

@ -68,7 +68,7 @@ impl XRSpace {
/// with other spaces
pub fn get_pose(&self, base_pose: &Frame) -> Option<ApiPose> {
if let Some(reference) = self.downcast::<XRReferenceSpace>() {
Some(reference.get_pose(base_pose))
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

9
components/script/dom/xrtest.rs
View file

@ -21,7 +21,6 @@ use crate::dom::promise::Promise;
use crate::script_thread::ScriptThread;
use crate::task_source::TaskSource;
use dom_struct::dom_struct;
use euclid::RigidTransform3D;
use ipc_channel::ipc::IpcSender;
use ipc_channel::router::ROUTER;
use profile_traits::ipc;
@ -75,26 +74,26 @@ impl XRTestMethods for XRTest {
let origin = if let Some(ref o) = init.viewerOrigin {
match get_origin(&o) {
Ok(origin) => origin,
Ok(origin) => Some(origin),
Err(e) => {
p.reject_error(e);
return p;
},
}
} else {
RigidTransform3D::identity()
None
};
let floor_origin = if let Some(ref o) = init.floorOrigin {
match get_origin(&o) {
Ok(origin) => origin,
Ok(origin) => Some(origin),
Err(e) => {
p.reject_error(e);
return p;
},
}
} else {
RigidTransform3D::identity()
None
};
let views = match get_views(&init.views) {