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Tagged: visual angle

- This topic has 2 replies, 3 voices, and was last updated 4 years, 10 months ago by Grant [Tobii].

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- 27/07/2018 at 07:20 #8651Rasa BhattaraiParticipant
Hello Tobii team,

I also want to know how to do this. If I have an initial position of (200, 150) given by my Tobii Eye X as (x,y) co-ordinates of the screen, then at what place should my next (x,y)co-ordinate be so that i can calculate the visual angle to be 2, 3 or 1.5 degrees.

Would you please explain ? Also, may I know the formula how to achieve this? I looked around in many sites but I am still confused in calculating the visual angle.

Thank you very much

27/07/2018 at 13:21 #8654Alex [Tobii]ParticipantHi!

Tobii Unity SDK doesn’t provide such information. Could you please elaborate? What do you need it for?

01/08/2018 at 11:54 #8666Grant [Tobii]KeymasterHi rasa, you should also consider that there will not be just one new position dependent on the angle difference.

For example, suppose you have the starting position @ (200,200) and you wish to move 2 Degrees. There would therefore be a *circle* of points around which 2 degrees would be possible, thus making your original request much more complicated.

In any event, If you could kindly clarify your intentions perhaps we can find a simpler solution for you.

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