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--- built_in:sensors [2015/12/23 15:54]
193.81.107.52 Close function bracket
+++ built_in:sensors [2018/01/03 10:23]
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-====== Sensors ======
-//(Information and examples taken from the DroidScript documentation)//
-===== Description =====
-Create Sensor objects using the **CreateSensor** function of the **[[built_in:app|app]]** object:
-<code>sns = app.CreateSensor( type, options );</code>
-Types available are:
-  * **Accelerometer**
-  * **MagneticField**
-  * **Orientation**
-  * **Light**
-  * **Proximity**
-  * **Temperature**
-  * **GameRotation**
-  * **GeomagneticRotation**
-  * **Gravity**
-  * **Gyroscope**
-  * **HeartRate**
-  * **Acceleration**
-  * **Pressure**
-  * **Humidity**
-  * **Rotation**
-  * **Motion**
-  * **StepCounter**
-  * **StepDetector**
-Try **sns.GetNames()** which lists all the sensor information. You can probably scan for certain keywords.
-You can also use a sensor id number instead of the name (just in case a future sensor is added).
-You can use the **SetOnChange** function of the Sensor to set the name of a function you want to be called when a the changes occur.
-Change the rate that a sensor checks for changes by adding one the options **"Fastest"**, **"Fast"**, **"Medium"** or **"Slow"**.
-"Slow" is the default.
-===== Methods =====
-Some controls use the same methods.\\
-For examples of the **[[same methods]]** look here.
-^ Method                          ^ Description                              ^
-| Sensor.GetAzimuth()             |                                          |
-| Sensor.GetHeight()              |                                          |
-| Sensor.GetNames()               | returns a list of all available sensors  |
-| Sensor.GetPitch()               |                                          |
-| Sensor.GetRoll()                |                                          |
-| Sensor.GetType()                |                                          |
-| Sensor.GetValues()              |                                          |
-| Sensor.SetMaxRate( rate )       | default 20ms                             |
-| Sensor.SetMinChange( value )    | a value between 0 and 1                  |
-| Sensor.SetOnChange( callback )  |                                          |
-| Sensor.Start()                  |                                          |
-| Sensor.Stop()                   |                                          |
-===== Examples =====
-^Sensor Type ^Code Example ^
-|Accelerometer | <code javascript>function OnStart()
-{
-  lay = app.CreateLayout( "Linear", "VCenter,FillXY" );
-  txt = app.CreateText( "", 0.8, 0.3, "Multiline" );
-  lay.AddChild( txt );
-  app.AddLayout( lay );
-  sns = app.CreateSensor( "Accelerometer" );
-  sns.SetOnChange( sns_OnChange );
-  sns.Start();
-}
-function sns_OnChange( x, y, z, time )
-{
-  txt.SetText( "x="+x + "\n y="+y + "\n z="+z );
-}
-</code> |
-|Orientation | <code javascript>function OnStart()
-{
-  lay = app.CreateLayout( "Linear", "VCenter,FillXY" );
-  txt = app.CreateText( "", 0.8, 0.3, "Multiline" );
-  lay.AddChild( txt );
-  app.AddLayout( lay );
-  sns = app.CreateSensor( "Orientation" );
-  sns.SetOnChange( sns_OnChange );
-  sns.Start();
-}
-function sns_OnChange( azimuth, pitch, roll, time )
-{
-  var msg = " azimuth = " + azimuth.toFixed(1);
-  msg += "\n pitch = " + pitch.toFixed(1);
-  msg += "\n roll = " + roll.toFixed(1);
-  txt.SetText( msg );
-}
-</code> |
-|Light | <code javascript>function OnStart()
-{
-  lay = app.CreateLayout( "Linear", "VCenter,FillXY" );
-  txt = app.CreateText( "", 0.8, 0.3 );
-  lay.AddChild( txt );
-  app.AddLayout( lay );
-  sns = app.CreateSensor( "Light" );
-  sns.SetOnChange( sns_OnChange );
-  sns.Start();
-}
-function sns_OnChange( lux )
-{
-  txt.SetText( "level = " + lux + " lux" );
-}
-</code> |

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