mirror of
https://github.com/servo/servo.git
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82 lines
2.7 KiB
Rust
82 lines
2.7 KiB
Rust
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at https://mozilla.org/MPL/2.0/. */
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use crate::dom::bindings::codegen::Bindings::XRSpaceBinding;
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use crate::dom::bindings::inheritance::Castable;
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use crate::dom::bindings::reflector::reflect_dom_object;
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use crate::dom::bindings::root::{Dom, DomRoot};
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use crate::dom::eventtarget::EventTarget;
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use crate::dom::globalscope::GlobalScope;
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use crate::dom::xrreferencespace::XRReferenceSpace;
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use crate::dom::xrsession::XRSession;
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use dom_struct::dom_struct;
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use euclid::{RigidTransform3D, Rotation3D, Vector3D};
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use webvr_traits::WebVRFrameData;
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#[dom_struct]
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pub struct XRSpace {
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eventtarget: EventTarget,
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session: Dom<XRSession>,
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is_viewerspace: bool,
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}
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impl XRSpace {
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pub fn new_inherited(session: &XRSession) -> XRSpace {
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XRSpace {
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eventtarget: EventTarget::new_inherited(),
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session: Dom::from_ref(session),
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is_viewerspace: false,
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}
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}
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fn new_viewerspace_inner(session: &XRSession) -> XRSpace {
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XRSpace {
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eventtarget: EventTarget::new_inherited(),
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session: Dom::from_ref(session),
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is_viewerspace: true,
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}
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}
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pub fn new_viewerspace(global: &GlobalScope, session: &XRSession) -> DomRoot<XRSpace> {
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reflect_dom_object(
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Box::new(XRSpace::new_viewerspace_inner(session)),
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global,
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XRSpaceBinding::Wrap,
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)
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}
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}
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impl XRSpace {
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/// Gets pose represented by this space
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///
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/// The reference origin used is common between all
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/// get_pose calls for spaces from the same device, so this can be used to compare
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/// with other spaces
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pub fn get_pose(&self, base_pose: &WebVRFrameData) -> RigidTransform3D<f64> {
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if let Some(reference) = self.downcast::<XRReferenceSpace>() {
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reference.get_pose(base_pose)
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} else if self.is_viewerspace {
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XRSpace::viewer_pose_from_frame_data(base_pose)
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} else {
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unreachable!()
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}
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}
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pub fn viewer_pose_from_frame_data(data: &WebVRFrameData) -> RigidTransform3D<f64> {
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let pos = data.pose.position.unwrap_or([0., 0., 0.]);
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let translation = Vector3D::new(pos[0] as f64, pos[1] as f64, pos[2] as f64);
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let orient = data.pose.orientation.unwrap_or([0., 0., 0., 0.]);
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let rotation = Rotation3D::quaternion(
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orient[0] as f64,
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orient[1] as f64,
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orient[2] as f64,
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orient[3] as f64,
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);
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RigidTransform3D::new(rotation, translation)
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}
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pub fn session(&self) -> &XRSession {
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&self.session
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}
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}
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