WorldViz User Forum - Avatar mimicking after

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Avatar mimicking after

Hi all,

I'm trying to make an avatar mimic the head movements of a participant with a delay of 4 seconds. In the code below, I'm writing the euler information of the viz.MainView to a file (1.log) and after 4 seconds, I'm trying to read from the beginning of that same file (thus creating a delay of 4 seconds). But after 4 seconds, I get an error message (IOError: [Errno 0] Error) and I think that's because I'm reading from the same file I'm writing to. I understand this could be problematic, but I don't know an other approach for my problem. Any help is greatly appreciated!

Regards,
Frank

Code:

import viz

import vizact

import viztask

import time



viz.go()



#CONSTANTS

PATH = '.\\'

PARTICIPANT = 1

TRACKING_DATA = open(PATH+str(PARTICIPANT)+".log", 'w+')

TIMER_SPEED = 0.1

SEC_DELAY = 4



def logTrackingData():

    orientation = viz.MainView.getEuler()

    data = str(orientation[0])+' '+str(orientation[1])+' '+str(orientation[2])+'\n'

    TRACKING_DATA.write(data)



def readTrackingData():

    rotation = TRACKING_DATA.readline()

    print rotation



def readWithDelay():

    #Wait 4 seconds

    yield viztask.waitTime(SEC_DELAY)

    vizact.ontimer(TIMER_SPEED, readTrackingData)



vizact.ontimer(TIMER_SPEED, logTrackingData)

viztask.schedule(readWithDelay())

Would it work for you to save the data in a list and read it from there?

Works like a charm, thanks Jeff! My solution consists of using three lists (one for yaw, pitch, and roll) which I append the current yaw, pitch, and roll to and start reading from the beginning after waiting 4 seconds. My only 'concern' now is that each list is growing with 10 floats/second, so they will get pretty big after a few minutes (my experiment will last around 10 to 15 minutes of mimicking I guess). Of course I could delete the information from the list after it has been read, but will the size of the lists pose any problem at all?

For anyone with the same problem, here's my solution I eventually used:

Code:

import viz

import vizact

import viztask



viz.go()



#CONSTANTS

TIMER_SPEED = 0.1

SEC_DELAY = 4



yaw_list = []

pitch_list = []

roll_list = [] 



def logTrackingData():

        orientation = viz.MainView.getEuler()

        yaw_list.append(orientation[0])

        pitch_list.append(orientation[1])

        roll_list.append(orientation[2])

        

def readTrackingData():

        global yaw, pitch, roll

        #Read information

        yaw = yaw_list[0]

        pitch = pitch_list[0]

        roll = roll_list[0]

        #Delete information already read

        yaw_list.pop(0)

        pitch_list.pop(0)

        roll_list.pop(0)



def readWithDelay():

        #Wait 4 seconds

        yield viztask.waitTime(SEC_DELAY)

        vizact.ontimer(TIMER_SPEED, readTrackingData)



vizact.ontimer(TIMER_SPEED, logTrackingData)

viztask.schedule(readWithDelay())