mirror of
https://github.com/servo/servo.git
synced 2025-06-18 22:34:30 +01:00
100 lines
3.7 KiB
Rust
100 lines
3.7 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::XRReferenceSpaceBinding;
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use crate::dom::bindings::codegen::Bindings::XRReferenceSpaceBinding::XRReferenceSpaceMethods;
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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::{DomRoot, MutDom};
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use crate::dom::dompointreadonly::DOMPointReadOnly;
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use crate::dom::window::Window;
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use crate::dom::xrrigidtransform::XRRigidTransform;
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use crate::dom::xrsession::XRSession;
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use crate::dom::xrspace::XRSpace;
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use crate::dom::xrstationaryreferencespace::XRStationaryReferenceSpace;
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use dom_struct::dom_struct;
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use euclid::Transform3D;
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use webvr_traits::WebVRFrameData;
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#[dom_struct]
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pub struct XRReferenceSpace {
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xrspace: XRSpace,
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transform: MutDom<XRRigidTransform>,
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}
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impl XRReferenceSpace {
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pub fn new_inherited(session: &XRSession, transform: &XRRigidTransform) -> XRReferenceSpace {
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XRReferenceSpace {
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xrspace: XRSpace::new_inherited(session),
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transform: MutDom::new(transform),
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}
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}
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#[allow(unused)]
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pub fn new(
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global: &Window,
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session: &XRSession,
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position: &DOMPointReadOnly,
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orientation: &DOMPointReadOnly,
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) -> DomRoot<XRReferenceSpace> {
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let transform = XRRigidTransform::new(global, position, orientation);
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reflect_dom_object(
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Box::new(XRReferenceSpace::new_inherited(session, &transform)),
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global,
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XRReferenceSpaceBinding::Wrap,
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)
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}
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#[allow(unused)]
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pub fn identity(global: &Window, session: &XRSession) -> DomRoot<XRReferenceSpace> {
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let transform = XRRigidTransform::identity(global);
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reflect_dom_object(
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Box::new(XRReferenceSpace::new_inherited(session, &transform)),
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global,
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XRReferenceSpaceBinding::Wrap,
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)
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}
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}
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impl XRReferenceSpaceMethods for XRReferenceSpace {
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/// https://immersive-web.github.io/webxr/#dom-xrreferencespace-originoffset
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fn SetOriginOffset(&self, transform: &XRRigidTransform) {
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self.transform.set(transform);
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}
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/// https://immersive-web.github.io/webxr/#dom-xrreferencespace-originoffset
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fn OriginOffset(&self) -> DomRoot<XRRigidTransform> {
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self.transform.get()
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}
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}
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impl XRReferenceSpace {
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/// Gets viewer pose represented by this space
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pub fn get_viewer_pose(&self, base_pose: &WebVRFrameData) -> Transform3D<f64> {
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let pose = self.get_pose(base_pose);
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// This may change, see https://github.com/immersive-web/webxr/issues/567
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let offset = self.transform.get().matrix();
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// XXXManishearth we can directly compute the inverse from the transform parameters
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// (and perhaps cache it)
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// XXXManishearth we can also optimize for the unset/identity offset case
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let inverse = offset
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.inverse()
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.expect("rigid transforms are always invertible");
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inverse.pre_mul(&pose)
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}
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/// Gets pose represented by this space
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///
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/// Does not apply originOffset, use get_viewer_pose instead if you need it
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pub fn get_pose(&self, base_pose: &WebVRFrameData) -> Transform3D<f64> {
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if let Some(stationary) = self.downcast::<XRStationaryReferenceSpace>() {
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stationary.get_pose(base_pose)
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} else {
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// non-subclassed XRReferenceSpaces exist, obtained via the "identity"
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// type. The pose does not depend on the base pose.
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Transform3D::identity()
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}
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}
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}
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