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// Copyright 2020 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_light_probe.h"
#include "device/vr/public/mojom/vr_service.mojom-blink.h"
#include "third_party/blink/renderer/bindings/modules/v8/v8_xr_light_probe_init.h"
#include "third_party/blink/renderer/core/geometry/dom_point_read_only.h"
#include "third_party/blink/renderer/modules/event_modules.h"
#include "third_party/blink/renderer/modules/event_target_modules.h"
#include "third_party/blink/renderer/modules/xr/xr_cube_map.h"
#include "third_party/blink/renderer/modules/xr/xr_light_estimate.h"
#include "third_party/blink/renderer/modules/xr/xr_object_space.h"
#include "third_party/blink/renderer/modules/xr/xr_session.h"
namespace blink {
namespace {
// Milliseconds to wait between reflection change events.
const double kReflectionChangeDelta = 1000.0;
} // namespace
XRLightProbe::XRLightProbe(XRSession* session, XRLightProbeInit* options)
: session_(session) {
if (options->reflectionFormat() == "rgba16f") {
reflection_format_ = kReflectionFormatRGBA16F;
} else {
reflection_format_ = kReflectionFormatSRGBA8;
}
}
XRSpace* XRLightProbe::probeSpace() const {
if (!probe_space_) {
probe_space_ =
MakeGarbageCollected<XRObjectSpace<XRLightProbe>>(session_, this);
}
return probe_space_.Get();
}
device::mojom::blink::XRNativeOriginInformationPtr XRLightProbe::NativeOrigin()
const {
return device::mojom::blink::XRNativeOriginInformation::NewReferenceSpaceType(
device::mojom::XRReferenceSpaceType::kLocal);
}
std::optional<gfx::Transform> XRLightProbe::MojoFromObject() const {
// For the moment we're making an assumption that the lighting estimations
// are always generated from the local space origin. This is the case for
// ARCore, but will need to be made more flexible as other runtimes or methods
// of light estimation are added.
return session_->GetMojoFrom(device::mojom::XRReferenceSpaceType::kLocal);
}
void XRLightProbe::ProcessLightEstimationData(
const device::mojom::blink::XRLightEstimationData* data,
double timestamp) {
bool reflection_changed = false;
if (data) {
light_estimate_ = MakeGarbageCollected<XRLightEstimate>(*data->light_probe);
if (data->reflection_probe) {
if (!cube_map_) {
reflection_changed = true;
}
const device::mojom::blink::XRReflectionProbe& reflection_probe =
*data->reflection_probe;
cube_map_ = std::make_unique<XRCubeMap>(*reflection_probe.cube_map);
}
} else {
if (cube_map_) {
reflection_changed = true;
}
light_estimate_ = nullptr;
cube_map_ = nullptr;
}
// Until we get proper notification of updated reflection data from the
// runtime we'll limit reflection change events to once per second.
if (reflection_changed ||
(cube_map_ &&
timestamp > last_reflection_change_ + kReflectionChangeDelta)) {
last_reflection_change_ = timestamp;
DispatchEvent(*blink::Event::Create(event_type_names::kReflectionchange));
}
}
ExecutionContext* XRLightProbe::GetExecutionContext() const {
return session_->GetExecutionContext();
}
const AtomicString& XRLightProbe::InterfaceName() const {
return event_target_names::kXRLightProbe;
}
void XRLightProbe::Trace(Visitor* visitor) const {
visitor->Trace(session_);
visitor->Trace(probe_space_);
visitor->Trace(light_estimate_);
EventTarget::Trace(visitor);
}
} // namespace blink
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