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Name: accelerationChanged
Type: message
Syntax: accelerationChanged <pXAccel>, <pYAccel>, <pZAccel>
Summary:
Sent to the current card of the defaultStack at the interval specified
by the mobileEnableAccelerometer command.
Introduced: 4.5.2
OS: ios, android
Platforms: mobile
Example:
on accelerationChanged pXAccel, pYAccel, pZAccel
-- display the acceleration along the x axis
put pXAccel into tXAxisAcceleration
end accelerationChanged
Parameters:
pXAccel:
the acceleration along the x axis relative to gravity
pYAccel:
the acceleration along the y axis relative to gravity
pZAccel:
the acceleration along the z axis relative to gravity
Description:
Handle the <accelerationChanged> message if you want to perform an
action when the acceleration along any axis changes
The <accelerationChanged> message is sent to the current card of the
defaultStack at the interval specified by the
<mobileEnableAccelerometer> command.
You can use the difference between the time values in two
<accelerationChanged> events to give an indication of how much time
passed between the samples.
>*Note:* On Android, the change in acceleration output is in meters
> per second squared whereas on iOS, it is in G-forces. In order to
> normalize these changes in acceleration, you must detect the
> <platform> and convert appropriately. For example:
on accelerationChanged pXAccel, pYAccel, pZAccel
if the platform is "iphone" then
-- Convert from g-forces to m/s^2
multiply pXAccel by 9.81
multiply pYAccel by 9.81
multiply pZAccel by 9.81
end if
-- the rest of your code
end accelerationChanged
References: mobileStopTrackingSensor (command),
mobileStartTrackingSensor (command),
mobileEnableAccelerometer (command), platform (function)
Tags: ui