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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::XRFrameBinding;
use crate::dom::bindings::codegen::Bindings::XRFrameBinding::XRFrameMethods;
use crate::dom::bindings::error::Error;
use crate::dom::bindings::inheritance::Castable;
use crate::dom::bindings::reflector::{reflect_dom_object, DomObject, Reflector};
use crate::dom::bindings::root::{Dom, DomRoot};
use crate::dom::globalscope::GlobalScope;
use crate::dom::xrpose::XRPose;
use crate::dom::xrreferencespace::XRReferenceSpace;
use crate::dom::xrsession::XRSession;
use crate::dom::xrspace::XRSpace;
use crate::dom::xrviewerpose::XRViewerPose;
use dom_struct::dom_struct;
use std::cell::Cell;
use webxr_api::Frame;
#[dom_struct]
pub struct XRFrame {
reflector_: Reflector,
session: Dom<XRSession>,
#[ignore_malloc_size_of = "defined in rust-webvr"]
data: Frame,
active: Cell<bool>,
animation_frame: Cell<bool>,
}
impl XRFrame {
fn new_inherited(session: &XRSession, data: Frame) -> XRFrame {
XRFrame {
reflector_: Reflector::new(),
session: Dom::from_ref(session),
data,
active: Cell::new(false),
animation_frame: Cell::new(false),
}
}
pub fn new(global: &GlobalScope, session: &XRSession, data: Frame) -> DomRoot<XRFrame> {
reflect_dom_object(
Box::new(XRFrame::new_inherited(session, data)),
global,
XRFrameBinding::Wrap,
)
}
/// https://immersive-web.github.io/webxr/#xrframe-active
pub fn set_active(&self, active: bool) {
self.active.set(active);
}
/// https://immersive-web.github.io/webxr/#xrframe-animationframe
pub fn set_animation_frame(&self, animation_frame: bool) {
self.animation_frame.set(animation_frame);
}
}
impl XRFrameMethods for XRFrame {
/// https://immersive-web.github.io/webxr/#dom-xrframe-session
fn Session(&self) -> DomRoot<XRSession> {
DomRoot::from_ref(&self.session)
}
/// https://immersive-web.github.io/webxr/#dom-xrframe-getviewerpose
fn GetViewerPose(
&self,
reference: &XRReferenceSpace,
) -> Result<Option<DomRoot<XRViewerPose>>, Error> {
if self.session != reference.upcast::<XRSpace>().session() {
return Err(Error::InvalidState);
}
if !self.active.get() || !self.animation_frame.get() {
return Err(Error::InvalidState);
}
let pose = reference.get_viewer_pose(&self.data);
Ok(Some(XRViewerPose::new(&self.global(), &self.session, pose)))
}
/// https://immersive-web.github.io/webxr/#dom-xrframe-getpose
fn GetPose(
&self,
space: &XRSpace,
relative_to: &XRSpace,
) -> Result<Option<DomRoot<XRPose>>, Error> {
if self.session != space.session() || self.session != relative_to.session() {
return Err(Error::InvalidState);
}
if !self.active.get() {
return Err(Error::InvalidState);
}
let space = if let Some(space) = space.get_pose(&self.data) {
space
} else {
return Ok(None);
};
let relative_to = if let Some(r) = relative_to.get_pose(&self.data) {
r
} else {
return Ok(None);
};
let pose = relative_to.inverse().pre_transform(&space);
Ok(Some(XRPose::new(&self.global(), pose)))
}
}
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