WorldViz User Forum - using i900 joystick in a taskFunction

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using i900 joystick in a taskFunction

Hi,

What I'm trying to do is, using the buttons on the joystick to scale my virtual world. I'm using a task know, but it seems that the event doesn't get triggered when using "viz.SENSOR_UP_EVENT". If I use "viztask.waitSensorDown" then I don't know what to put in it as a button. I've tried the state things from the manual "joystickSensor.get()[7]" but it doesn't give me the actual pressed button wich I have to put in, right?

Code:

def scaleOnSensorEvent() :

        dataObject = viz.Data

        sensorData = joystickSensor.get()



        while True :

                yield viztask.waitEvent(viz.SENSOR_UP_EVENT, dataObject) 

#                yield viztask.waitSensorDown(joystickSensor, button??, dataObject)

                print "something"



if viz.get(viz.TRACKER):



        headSensor = viz.add('intersense.dls')

        viz.tracker()

        headSensor.reset()



        joystickSensor = viz.add('intersense.dls')

        viz.tracker()

        joystickSensor.reset()



viztask.schedule(scaleOnSensorEvent)

thanks for your help

The intersense.dls plugin does not generate sensor up/down events. You need to manually check the button state by examining the value at index 7 of the data array. The documentation for the intersense plugin has sample code showing how to check for the button state of the joystick.

Thank you,
I've used a timer now, and it works. It would be handy though to be able to use a task with the IS-900 joystick (wand). The use of tasks makes it a whole lot easier, great concept!

You can create your own custom task conditions. For example, here are two conditions that wait for an IS900 button to be pressed or released:

Code:

class waitIS900Down( viztask.Condition ):

    def __init__( self, sensor, button ):

        self._sensor = sensor

        self._button = button

   

    def update( self ):

        return int(self._sensor.getData()[7]) & self._button



class waitIS900Up( viztask.Condition ):

    def __init__( self, sensor, button ):

        self._sensor = sensor

        self._button = button

   

    def update( self ):

        return (int(self._sensor.getData()[7]) & self._button) == 0

Here is code that shows how to use it:

Code:

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yield waitIS900Down(isense,1)

print 'Button 1 pressed'

yield waitIS900Up(isense,1)

print 'Button 1 released'

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