PowerMate

Inherits from: Object

(Brought to you by http://LFSaw.de)

Built on GeneralHID

Attention

To use this HID object, and the Griffin PowerMate at all in a useful fashion as a HID object on osx, you need the PowerMate kext provided here:

http://www.oatbit.com/~jg/index.php?w=newsite/files/knob_drivers/

Load the kext by evaluating this line

"cd /Users/tboverma/Documents/myProjects/sc/wiki/tools/PowerMate-KnobKext; ./load".runInTerminal;

Currently, this class only supports one PowerMate at a time. More to come.

Creation / Class Methods

*new

create a new Instance

Accessing Instance and Class Variables

downAction

downAction_ (func)

define action to be evaluated when PowerMate is pressed

upAction

upAction_ (func)

define action to be evaluated when PowerMate is released

turnAction

turnAction_ (func)

define action to be evaluated when PowerMate is rotated

downTurnAction

downTurnAction_ (func)

define action to be evaluated when PowerMate is rotated while pressed

Example

q = q ? ();  // a dictonary

// Build device list. 

// Make sure the Powermate is plugged in before evaluating this line

GeneralHID.buildDeviceList;

// create the PowerMate and start the HID event loop

q.knob = PowerMate.new;

GeneralHID.startEventLoop

// define some actions

(

q.knob.downAction = {"down".postln};

q.knob.upAction = {"up".postln};

q.knob.turnAction = {|k, vel| (vel > 0).if({

"right for %\n".postf(vel)

},{

"left for %\n".postf(vel.abs)

})

};

q.knob.downTurnAction = {|k, vel| (vel > 0).if({

"down right for %\n".postf(vel)

},{

"down left for %\n".postf(vel.abs)

})

};

)

// stop everything

q.knob.downAction = nil;

q.knob.upAction = nil;

q.knob.turnAction = nil;

q.knob.downTurnAction = nil;

GeneralHID.stopEventLoop