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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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 http://mozilla.org/MPL/2.0/. */
#include "mozilla/dom/XRReferenceSpace.h"
#include "mozilla/dom/XRRigidTransform.h"
#include "VRDisplayClient.h"
namespace mozilla::dom {
XRReferenceSpace::XRReferenceSpace(nsIGlobalObject* aParent,
XRSession* aSession,
XRNativeOrigin* aNativeOrigin,
XRReferenceSpaceType aType)
: XRSpace(aParent, aSession, aNativeOrigin), mType(aType) {}
already_AddRefed<XRReferenceSpace> XRReferenceSpace::GetOffsetReferenceSpace(
const XRRigidTransform& aOriginOffset) {
RefPtr<XRReferenceSpace> offsetReferenceSpace =
new XRReferenceSpace(GetParentObject(), mSession, mNativeOrigin, mType);
// https://immersive-web.github.io/webxr/#multiply-transforms
// An XRRigidTransform is essentially a rotation followed by a translation
gfx::QuaternionDouble otherOrientation = aOriginOffset.RawOrientation();
// The resulting rotation is the two combined
offsetReferenceSpace->mOriginOffsetOrientation =
mOriginOffsetOrientation * otherOrientation;
// We first apply the rotation of aOriginOffset to
// mOriginOffsetPosition offset, then translate by the offset of
// aOriginOffset
offsetReferenceSpace->mOriginOffsetPosition =
otherOrientation.RotatePoint(mOriginOffsetPosition) +
aOriginOffset.RawPosition();
return offsetReferenceSpace.forget();
}
JSObject* XRReferenceSpace::WrapObject(JSContext* aCx,
JS::Handle<JSObject*> aGivenProto) {
return XRReferenceSpace_Binding::Wrap(aCx, this, aGivenProto);
}
} // namespace mozilla::dom
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