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Question by ComradeVanti · Dec 04, 2016 at 06:12 PM · mobiletouchscreenworldspacescreenspace

Touch.position is incorrectly offset

Hey guy.

I want to get a collider by shooting a ray from my camera through a Touch.position.

Im doing this by:

 Ray ray = Camera.main.ScreenPointToRay (someTouch.position);

Seems correct? Well it doesnt return the correct ray though. This is either a problem with the Touch.position property being off or the ScreenPointToRay Function not working correctly.

I should mention that sometimes (especially when I move my finger) both rays get displayed. The wrong one and the correct one. That lookes like this:

alt text

Only the wrong one registers colliders though.... so thats a problem.

Some additional information:

Camera is ortographic, stationary and rotated.

I havent tested if the problem still occures when I build the game. At his point Im using Unity Remote to test my game.

Anyone got an answer to this? :)

EDIT:

I found that the problem lies in that my game and the phone I used for remote had different resolutions. The offset the rays have change when I change my game resolution. I have not found the correct res yet.

EDIT EDIT:

It seems that Touch.position depends on how big your gameview window is... so... thats weird... Anybody knows how to actually get the Touch.position of the actual screen?

ray.png (46.9 kB)
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