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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 dom_struct::dom_struct;
use webxr_api::{FingerJoint, Hand, Joint};
use crate::dom::bindings::codegen::Bindings::XRHandBinding::{XRHandConstants, XRHandMethods};
use crate::dom::bindings::reflector::{reflect_dom_object, Reflector};
use crate::dom::bindings::root::{Dom, DomRoot};
use crate::dom::globalscope::GlobalScope;
use crate::dom::xrinputsource::XRInputSource;
use crate::dom::xrjointspace::XRJointSpace;
#[dom_struct]
pub struct XRHand {
reflector_: Reflector,
#[ignore_malloc_size_of = "defined in webxr"]
source: Dom<XRInputSource>,
#[ignore_malloc_size_of = "partially defind in webxr"]
#[custom_trace]
spaces: Hand<Dom<XRJointSpace>>,
}
impl XRHand {
fn new_inherited(source: &XRInputSource, spaces: &Hand<DomRoot<XRJointSpace>>) -> XRHand {
XRHand {
reflector_: Reflector::new(),
source: Dom::from_ref(source),
spaces: spaces.map(|j, _| j.as_ref().map(|j| Dom::from_ref(&**j))),
}
}
pub fn new(global: &GlobalScope, source: &XRInputSource, support: Hand<()>) -> DomRoot<XRHand> {
let id = source.id();
let session = source.session();
let spaces = support
.map(|field, joint| field.map(|_| XRJointSpace::new(global, session, id, joint)));
reflect_dom_object(Box::new(XRHand::new_inherited(source, &spaces)), global)
}
}
impl XRHandMethods for XRHand {
/// https://github.com/immersive-web/webxr-hands-input/blob/master/explainer.md
fn Length(&self) -> i32 {
XRHandConstants::LITTLE_PHALANX_TIP as i32 + 1
}
/// https://github.com/immersive-web/webxr-hands-input/blob/master/explainer.md
fn IndexedGetter(&self, joint_index: u32) -> Option<DomRoot<XRJointSpace>> {
let joint = match joint_index {
XRHandConstants::WRIST => Joint::Wrist,
XRHandConstants::THUMB_METACARPAL => Joint::ThumbMetacarpal,
XRHandConstants::THUMB_PHALANX_PROXIMAL => Joint::ThumbPhalanxProximal,
XRHandConstants::THUMB_PHALANX_DISTAL => Joint::ThumbPhalanxDistal,
XRHandConstants::THUMB_PHALANX_TIP => Joint::ThumbPhalanxTip,
XRHandConstants::INDEX_METACARPAL => Joint::Index(FingerJoint::Metacarpal),
XRHandConstants::INDEX_PHALANX_PROXIMAL => Joint::Index(FingerJoint::PhalanxProximal),
XRHandConstants::INDEX_PHALANX_INTERMEDIATE => {
Joint::Index(FingerJoint::PhalanxIntermediate)
},
XRHandConstants::INDEX_PHALANX_DISTAL => Joint::Index(FingerJoint::PhalanxDistal),
XRHandConstants::INDEX_PHALANX_TIP => Joint::Index(FingerJoint::PhalanxTip),
XRHandConstants::MIDDLE_METACARPAL => Joint::Middle(FingerJoint::Metacarpal),
XRHandConstants::MIDDLE_PHALANX_PROXIMAL => Joint::Middle(FingerJoint::PhalanxProximal),
XRHandConstants::MIDDLE_PHALANX_INTERMEDIATE => {
Joint::Middle(FingerJoint::PhalanxIntermediate)
},
XRHandConstants::MIDDLE_PHALANX_DISTAL => Joint::Middle(FingerJoint::PhalanxDistal),
XRHandConstants::MIDDLE_PHALANX_TIP => Joint::Middle(FingerJoint::PhalanxTip),
XRHandConstants::RING_METACARPAL => Joint::Ring(FingerJoint::Metacarpal),
XRHandConstants::RING_PHALANX_PROXIMAL => Joint::Ring(FingerJoint::PhalanxProximal),
XRHandConstants::RING_PHALANX_INTERMEDIATE => {
Joint::Ring(FingerJoint::PhalanxIntermediate)
},
XRHandConstants::RING_PHALANX_DISTAL => Joint::Ring(FingerJoint::PhalanxDistal),
XRHandConstants::RING_PHALANX_TIP => Joint::Ring(FingerJoint::PhalanxTip),
XRHandConstants::LITTLE_METACARPAL => Joint::Little(FingerJoint::Metacarpal),
XRHandConstants::LITTLE_PHALANX_PROXIMAL => Joint::Little(FingerJoint::PhalanxProximal),
XRHandConstants::LITTLE_PHALANX_INTERMEDIATE => {
Joint::Little(FingerJoint::PhalanxIntermediate)
},
XRHandConstants::LITTLE_PHALANX_DISTAL => Joint::Little(FingerJoint::PhalanxDistal),
XRHandConstants::LITTLE_PHALANX_TIP => Joint::Little(FingerJoint::PhalanxTip),
// XXXManishearth should this be a TypeError?
_ => return None,
};
self.spaces.get(joint).map(|j| DomRoot::from_ref(&**j))
}
}
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