gecko/gfx/vr/VRDeviceProxyOrientationFallBack.h
2015-09-17 14:23:13 -07:00

54 lines
1.6 KiB
C++

/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
* 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/. */
#ifndef GFX_VR_PROXY_ORIENTATION_FALLBACK_H
#define GFX_VR_PROXY_ORIENTATION_FALLBACK_H
#include "VRDeviceProxy.h"
#include "mozilla/HalSensor.h"
#include "mozilla/HalScreenConfiguration.h"
namespace mozilla {
namespace gfx {
class VRDeviceProxyOrientationFallBack : public VRDeviceProxy
, public hal::ISensorObserver
, public hal::ScreenConfigurationObserver
{
public:
explicit VRDeviceProxyOrientationFallBack(const VRDeviceUpdate& aDeviceUpdate);
virtual void ZeroSensor() override;
virtual VRHMDSensorState GetSensorState(double timeOffset = 0.0) override;
// ISensorObserver interface
void Notify(const hal::SensorData& SensorData) override;
// ScreenConfigurationObserver interface
void Notify(const hal::ScreenConfiguration& ScreenConfiguration) override;
protected:
virtual ~VRDeviceProxyOrientationFallBack();
void StartSensorTracking();
void StopSensorTracking();
void ComputeStateFromLastSensor();
uint32_t mOrient;
Quaternion mScreenTransform;
Quaternion mSensorZeroInverse;
Quaternion mSavedLastSensor;
double mSavedLastSensorTime;
bool mNeedsSensorCompute; // if we need to compute the state from mSavedLastSensor
bool mTracking;
};
} // namespace gfx
} // namespace mozilla
#endif /* GFX_VR_PROXY_ORIENTATION_FALLBACK_H */