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// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "third_party/blink/renderer/modules/xr/xr_anchor.h"
#include "third_party/blink/renderer/modules/xr/xr_object_space.h"
#include "third_party/blink/renderer/modules/xr/xr_session.h"
#include "third_party/blink/renderer/modules/xr/xr_system.h"
#include "third_party/blink/renderer/platform/bindings/exception_state.h"
namespace {
constexpr char kAnchorAlreadyDeleted[] =
"Unable to access anchor properties, the anchor was already deleted.";
}
namespace blink {
XRAnchor::XRAnchor(uint64_t id,
XRSession* session,
const device::mojom::blink::XRAnchorData& anchor_data)
: id_(id),
is_deleted_(false),
session_(session),
mojo_from_anchor_(anchor_data.mojo_from_anchor) {
DVLOG(3) << __func__ << ": id_=" << id_
<< ", anchor_data.mojo_from_anchor.has_value()="
<< anchor_data.mojo_from_anchor.has_value();
}
void XRAnchor::Update(const device::mojom::blink::XRAnchorData& anchor_data) {
DVLOG(3) << __func__ << ": id_=" << id_ << ", is_deleted_=" << is_deleted_
<< ", anchor_data.mojo_from_anchor.has_value()="
<< anchor_data.mojo_from_anchor.has_value();
if (is_deleted_) {
return;
}
mojo_from_anchor_ = anchor_data.mojo_from_anchor;
}
uint64_t XRAnchor::id() const {
return id_;
}
XRSpace* XRAnchor::anchorSpace(ExceptionState& exception_state) const {
DVLOG(2) << __func__ << ": id_=" << id_ << ", is_deleted_=" << is_deleted_
<< " anchor_space_ is valid? " << !!anchor_space_;
if (is_deleted_) {
exception_state.ThrowDOMException(DOMExceptionCode::kInvalidStateError,
kAnchorAlreadyDeleted);
return nullptr;
}
if (!anchor_space_) {
anchor_space_ =
MakeGarbageCollected<XRObjectSpace<XRAnchor>>(session_, this);
}
return anchor_space_.Get();
}
device::mojom::blink::XRNativeOriginInformationPtr XRAnchor::NativeOrigin()
const {
return device::mojom::blink::XRNativeOriginInformation::NewAnchorId(
this->id());
}
std::optional<gfx::Transform> XRAnchor::MojoFromObject() const {
DVLOG(3) << __func__ << ": id_=" << id_;
if (!mojo_from_anchor_) {
DVLOG(3) << __func__ << ": id_=" << id_ << ", mojo_from_anchor_ is not set";
return std::nullopt;
}
return mojo_from_anchor_->ToTransform();
}
void XRAnchor::Delete() {
DVLOG(1) << __func__ << ": id_=" << id_ << ", is_deleted_=" << is_deleted_;
if (!is_deleted_) {
session_->xr()->xrEnvironmentProviderRemote()->DetachAnchor(id_);
mojo_from_anchor_ = std::nullopt;
anchor_space_ = nullptr;
}
is_deleted_ = true;
}
void XRAnchor::Trace(Visitor* visitor) const {
visitor->Trace(session_);
visitor->Trace(anchor_space_);
ScriptWrappable::Trace(visitor);
}
} // namespace blink
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