How to convert data to correspond pixel on screen

[peterwang1996]

Hi

I'm using the package with my Tobii Eye Tracker 4C. I ran using the sample code in README.md and it worked with output as follow:

{
  left: { x: 0.35557255148887634, y: 0.5967899560928345 },
  right: { x: 0.33398452401161194, y: 0.5947821736335754 },
  prefered: { x: 0.34477853775024414, y: 0.595786064863205 },
  timeSeconds: 8.643278199015185 
}

It changes when I‘m moving fixation point on screen, so I'm sure the data is valid. The only question I'm facing is how can I convert the data to match the pixels on screen. I don't know what should I do to finish the conversion, or I should use a different API. I tried to search but find nothing useful. So is there any advise for the problem? Thx and RSVP.