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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/XRView.h"
#include "mozilla/HoldDropJSObjects.h"
#include "mozilla/dom/XRRigidTransform.h"
#include "mozilla/dom/Pose.h"
#include "nsWrapperCache.h"
namespace mozilla::dom {
NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE_WITH_JS_MEMBERS(XRView,
(mParent, mTransform),
(mJSProjectionMatrix))
XRView::XRView(nsISupports* aParent, const XREye& aEye)
: mParent(aParent),
mEye(aEye),
mPosition(gfx::PointDouble3D()),
mOrientation(gfx::QuaternionDouble()),
mJSProjectionMatrix(nullptr) {
mozilla::HoldJSObjects(this);
}
XRView::~XRView() { mozilla::DropJSObjects(this); }
JSObject* XRView::WrapObject(JSContext* aCx,
JS::Handle<JSObject*> aGivenProto) {
return XRView_Binding::Wrap(aCx, this, aGivenProto);
}
void XRView::Update(const gfx::PointDouble3D& aPosition,
const gfx::QuaternionDouble& aOrientation,
const gfx::Matrix4x4& aProjectionMatrix) {
mPosition = aPosition;
mOrientation = aOrientation;
mProjectionMatrix = aProjectionMatrix;
if (mTransform) {
mTransform->Update(aPosition, aOrientation);
}
if (aProjectionMatrix != mProjectionMatrix) {
mProjectionNeedsUpdate = true;
mProjectionMatrix = aProjectionMatrix;
}
}
XREye XRView::Eye() const { return mEye; }
void XRView::GetProjectionMatrix(JSContext* aCx,
JS::MutableHandle<JSObject*> aRetval,
ErrorResult& aRv) {
if (!mJSProjectionMatrix || mProjectionNeedsUpdate) {
mProjectionNeedsUpdate = false;
gfx::Matrix4x4 mat;
Pose::SetFloat32Array(aCx, this, aRetval, mJSProjectionMatrix,
mProjectionMatrix.components, 16, aRv);
if (!mJSProjectionMatrix) {
return;
}
}
if (mJSProjectionMatrix) {
JS::ExposeObjectToActiveJS(mJSProjectionMatrix);
}
aRetval.set(mJSProjectionMatrix);
}
already_AddRefed<XRRigidTransform> XRView::GetTransform(ErrorResult& aRv) {
if (!mTransform) {
mTransform = new XRRigidTransform(mParent, mPosition, mOrientation);
}
RefPtr<XRRigidTransform> transform = mTransform;
return transform.forget();
}
} // namespace mozilla::dom
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