tobii_vr_custom_json_analytics

eyetracking.py

# MIT License
# 
# Copyright (c) 2019 Andy Thomas Woods
# 
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
# 
# The above copyright notice and this permission notice shall be included in all
# copies or substantial portions of the Software.
# 
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.

import json

loc = 'C:\\Users\\Andy\\Desktop\\Mondrian2019v1'
filenames = ['JO', 'polly', 'TIMH', 'CALLUM', 'TimStokes', 'tony']

times = {
    'polly': [9, 36, 37, 54],
    'TIMH': [4, 34, 39, 59],
    'CALLUM': [3, 31, 42, 71],
    'JO': [0, 32, 45, 62],
    'TimStokes': [3, 33, 40, 59],
    'tony': [2, 32, 39, 54]
}


def crunch(json, _times):

    start1 = _times[0]
    stop1 = _times[1]
    start2= _times[2]
    stop2 = _times[3]

    items = {'free': [], 'task': []}


    time = 0
    delta = 1.0/90
    prev_item = None
    current_item = None
    duration = 0
    fixations = 50
    min_duration = 60 / 1000
    for frame in (json['frameData']['TobiiProVRAnalytics.Metrics.TrackedObjectFrameData, TobiiProVRAnalytics, Version=1.1.0.0, Culture=neutral, PublicKeyToken=null']['$values']):
        try:
            current_item = frame['objectId']
            if current_item == prev_item:
                duration += delta
            else:
                if prev_item:
                    if duration > min_duration:
                        if time > start1 and time < stop1:
                            if len(items['free']) < fixations:
                                items['free'].append(str(duration))
                        elif time > start2 and time < stop2:
                            if len(items['task']) < fixations:
                                items['task'].append(str(duration))
                prev_item = current_item
                duration = 0
            time += delta
        except TypeError:
            pass

    return items

data = {}
sav = ''

for filename in filenames:
    filenamecombined = loc + '\\' + filename + '.json'

    with open(filenamecombined) as json_file:
        j = json.loads(json_file.read())
        data = crunch(j, times[filename])

        sav += filename + ',free,' + ','.join(data['free']) + '\n'
        sav += filename + ',task,' + ','.join(data['task']) + '\n'



with open(loc + '\\' + 'results.txt', 'w') as file:
    file.write(sav)