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