#1
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Arrington Eye tracker
Dear Experts
I'm wondering if anyone can clarify the data that the Arrington Plug-in is picking up in Vizard. I'm using the code below and I get three outputs which I presumes were xposition yposition and velocity (although I can seem to find any confirmation for this) - however these values don't seem to match is being shown in viewpoint. e.g I get [0.44207999110221863, 0.4781699776649475, 0.0] in vizard and Viewpoint is showing ~3 and 4 for x and y positions. Thank you all for you time. Code:
from ctypes import * # eyetrackka import os import sys sys.path.append('C:/ViewPoint 2.9.2.5') sys.path.append('C:/Program Files (x86)/WorldViz/Vizard4/plug-ins') vpxDll = 'C:\ViewPoint 2.9.2.5\VPX_InterApp.dll' if ( not os.access(vpxDll,os.F_OK) ): print("WARNING: Invalid vpxDll path") cdll.LoadLibrary( vpxDll ) vpx = CDLL( vpxDll ) #Create arrington extension arrington = viz.add('arrington.dle') #Connect to eye tracker tracker = arrington.addEyeTracker() #Print smoothed gaze position (default) print tracker.getPosition() |
#2
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The 3 outputs are x,y,z although this tracker does not provide z data so the last value is 0. The gaze position is normalized from 0-1, relative to the lower left corner of the screen.
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