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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at https://mozilla.org/MPL/2.0/. */
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, 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, WebVRPose};
#[dom_struct]
pub struct XRSpace {
eventtarget: EventTarget,
session: Dom<XRSession>,
input_source: MutNullableDom<XRInputSource>,
}
impl XRSpace {
pub fn new_inherited(session: &XRSession) -> XRSpace {
XRSpace {
eventtarget: EventTarget::new_inherited(),
session: Dom::from_ref(session),
input_source: Default::default(),
}
}
fn new_inputspace_inner(session: &XRSession, input: &XRInputSource) -> XRSpace {
XRSpace {
eventtarget: EventTarget::new_inherited(),
session: Dom::from_ref(session),
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 {
/// Gets pose represented by this space
///
/// 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: &WebVRFrameData) -> RigidTransform3D<f64> {
if let Some(reference) = self.downcast::<XRReferenceSpace>() {
reference.get_pose(base_pose)
} else if let Some(source) = self.input_source.get() {
XRSpace::pose_to_transform(&source.pose())
} else {
unreachable!()
}
}
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 = pose.orientation.unwrap_or([0., 0., 0., 0.]);
let rotation = Rotation3D::quaternion(
orient[0] as f64,
orient[1] as f64,
orient[2] as f64,
orient[3] as f64,
)
.normalize();
RigidTransform3D::new(rotation, translation)
}
pub fn session(&self) -> &XRSession {
&self.session
}
}
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