151 lines
		
	
	
		
			5.7 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
			
		
		
	
	
			151 lines
		
	
	
		
			5.7 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
////////////////////////////////////////////////////////////
 | 
						|
//
 | 
						|
// SFML - Simple and Fast Multimedia Library
 | 
						|
// Copyright (C) 2007-2018 Laurent Gomila (laurent@sfml-dev.org)
 | 
						|
//
 | 
						|
// This software is provided 'as-is', without any express or implied warranty.
 | 
						|
// In no event will the authors be held liable for any damages arising from the use of this software.
 | 
						|
//
 | 
						|
// Permission is granted to anyone to use this software for any purpose,
 | 
						|
// including commercial applications, and to alter it and redistribute it freely,
 | 
						|
// subject to the following restrictions:
 | 
						|
//
 | 
						|
// 1. The origin of this software must not be misrepresented;
 | 
						|
//    you must not claim that you wrote the original software.
 | 
						|
//    If you use this software in a product, an acknowledgment
 | 
						|
//    in the product documentation would be appreciated but is not required.
 | 
						|
//
 | 
						|
// 2. Altered source versions must be plainly marked as such,
 | 
						|
//    and must not be misrepresented as being the original software.
 | 
						|
//
 | 
						|
// 3. This notice may not be removed or altered from any source distribution.
 | 
						|
//
 | 
						|
////////////////////////////////////////////////////////////
 | 
						|
 | 
						|
#ifndef SFML_SENSOR_HPP
 | 
						|
#define SFML_SENSOR_HPP
 | 
						|
 | 
						|
////////////////////////////////////////////////////////////
 | 
						|
// Headers
 | 
						|
////////////////////////////////////////////////////////////
 | 
						|
#include <SFML/Window/Export.hpp>
 | 
						|
#include <SFML/System/Vector3.hpp>
 | 
						|
#include <SFML/System/Time.hpp>
 | 
						|
 | 
						|
 | 
						|
namespace sf
 | 
						|
{
 | 
						|
////////////////////////////////////////////////////////////
 | 
						|
/// \brief Give access to the real-time state of the sensors
 | 
						|
///
 | 
						|
////////////////////////////////////////////////////////////
 | 
						|
class SFML_WINDOW_API Sensor
 | 
						|
{
 | 
						|
public:
 | 
						|
 | 
						|
    ////////////////////////////////////////////////////////////
 | 
						|
    /// \brief Sensor type
 | 
						|
    ///
 | 
						|
    ////////////////////////////////////////////////////////////
 | 
						|
    enum Type
 | 
						|
    {
 | 
						|
        Accelerometer,    ///< Measures the raw acceleration (m/s^2)
 | 
						|
        Gyroscope,        ///< Measures the raw rotation rates (degrees/s)
 | 
						|
        Magnetometer,     ///< Measures the ambient magnetic field (micro-teslas)
 | 
						|
        Gravity,          ///< Measures the direction and intensity of gravity, independent of device acceleration (m/s^2)
 | 
						|
        UserAcceleration, ///< Measures the direction and intensity of device acceleration, independent of the gravity (m/s^2)
 | 
						|
        Orientation,      ///< Measures the absolute 3D orientation (degrees)
 | 
						|
 | 
						|
        Count             ///< Keep last -- the total number of sensor types
 | 
						|
    };
 | 
						|
 | 
						|
    ////////////////////////////////////////////////////////////
 | 
						|
    /// \brief Check if a sensor is available on the underlying platform
 | 
						|
    ///
 | 
						|
    /// \param sensor Sensor to check
 | 
						|
    ///
 | 
						|
    /// \return True if the sensor is available, false otherwise
 | 
						|
    ///
 | 
						|
    ////////////////////////////////////////////////////////////
 | 
						|
    static bool isAvailable(Type sensor);
 | 
						|
 | 
						|
    ////////////////////////////////////////////////////////////
 | 
						|
    /// \brief Enable or disable a sensor
 | 
						|
    ///
 | 
						|
    /// All sensors are disabled by default, to avoid consuming too
 | 
						|
    /// much battery power. Once a sensor is enabled, it starts
 | 
						|
    /// sending events of the corresponding type.
 | 
						|
    ///
 | 
						|
    /// This function does nothing if the sensor is unavailable.
 | 
						|
    ///
 | 
						|
    /// \param sensor  Sensor to enable
 | 
						|
    /// \param enabled True to enable, false to disable
 | 
						|
    ///
 | 
						|
    ////////////////////////////////////////////////////////////
 | 
						|
    static void setEnabled(Type sensor, bool enabled);
 | 
						|
 | 
						|
    ////////////////////////////////////////////////////////////
 | 
						|
    /// \brief Get the current sensor value
 | 
						|
    ///
 | 
						|
    /// \param sensor Sensor to read
 | 
						|
    ///
 | 
						|
    /// \return The current sensor value
 | 
						|
    ///
 | 
						|
    ////////////////////////////////////////////////////////////
 | 
						|
    static Vector3f getValue(Type sensor);
 | 
						|
};
 | 
						|
 | 
						|
} // namespace sf
 | 
						|
 | 
						|
 | 
						|
#endif // SFML_SENSOR_HPP
 | 
						|
 | 
						|
 | 
						|
////////////////////////////////////////////////////////////
 | 
						|
/// \class sf::Sensor
 | 
						|
/// \ingroup window
 | 
						|
///
 | 
						|
/// sf::Sensor provides an interface to the state of the
 | 
						|
/// various sensors that a device provides. It only contains static
 | 
						|
/// functions, so it's not meant to be instantiated.
 | 
						|
///
 | 
						|
/// This class allows users to query the sensors values at any
 | 
						|
/// time and directly, without having to deal with a window and
 | 
						|
/// its events. Compared to the SensorChanged event, sf::Sensor
 | 
						|
/// can retrieve the state of a sensor at any time (you don't need to
 | 
						|
/// store and update its current value on your side).
 | 
						|
///
 | 
						|
/// Depending on the OS and hardware of the device (phone, tablet, ...),
 | 
						|
/// some sensor types may not be available. You should always check
 | 
						|
/// the availability of a sensor before trying to read it, with the
 | 
						|
/// sf::Sensor::isAvailable function.
 | 
						|
///
 | 
						|
/// You may wonder why some sensor types look so similar, for example
 | 
						|
/// Accelerometer and Gravity / UserAcceleration. The first one
 | 
						|
/// is the raw measurement of the acceleration, and takes into account
 | 
						|
/// both the earth gravity and the user movement. The others are
 | 
						|
/// more precise: they provide these components separately, which is
 | 
						|
/// usually more useful. In fact they are not direct sensors, they
 | 
						|
/// are computed internally based on the raw acceleration and other sensors.
 | 
						|
/// This is exactly the same for Gyroscope vs Orientation.
 | 
						|
///
 | 
						|
/// Because sensors consume a non-negligible amount of current, they are
 | 
						|
/// all disabled by default. You must call sf::Sensor::setEnabled for each
 | 
						|
/// sensor in which you are interested.
 | 
						|
///
 | 
						|
/// Usage example:
 | 
						|
/// \code
 | 
						|
/// if (sf::Sensor::isAvailable(sf::Sensor::Gravity))
 | 
						|
/// {
 | 
						|
///     // gravity sensor is available
 | 
						|
/// }
 | 
						|
///
 | 
						|
/// // enable the gravity sensor
 | 
						|
/// sf::Sensor::setEnabled(sf::Sensor::Gravity, true);
 | 
						|
///
 | 
						|
/// // get the current value of gravity
 | 
						|
/// sf::Vector3f gravity = sf::Sensor::getValue(sf::Sensor::Gravity);
 | 
						|
/// \endcode
 | 
						|
///
 | 
						|
////////////////////////////////////////////////////////////
 |