Question by Cambesa · Oct 06, 2016 at 09:21 AM · worldspace conversion screenspace

Is there an alternative to Camera.WorldToScreenPoint or another way to solve this problem?

Hi all,

I'm using Camera.main.WorldToScreenPoint to show an image on the canvas based on the user position in world space which is in turn based on the GPS signal. When zooming out, the image of the user disappears when the distance to the Camera get larger than somewhere above 1000. The exact distance varies depending on the supposed vertical location of the user image on the screen.

Does someone know an alternative to Camera.WorldToScreenPoint or another way to solve this problem?

The specific code I use:

Vector3 userToScreen = Camera.main.WorldToScreenPoint(userIndicator); userIndicatorImage.transform.position = userToScreen;

I have looked into using the actual camera and world space matrices but can not come up with the right way to formulate the code to make it work. Can I perhaps see what Unity is doing behind the scenes when I execute Camera.WorldToScreenPoint ?

Kind regards,

Yorick

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Zodiarc · Oct 06, 2016 at 09:26 AM 1

It seems to me more like a camera draw distance issue.

Cambesa Zodiarc · Oct 06, 2016 at 10:25 AM 0

I thought it would not be a draw distance issue because the image is on the Canvas (which is set to "Screen - space overlay"). But it turned out the WorldToScreenPoint also returned a Z value and it seems that that value has to be below 1000 to make the image appear on the canvas.

I solved the problem by multiplying the Z value by 0.

userToScreen = Vector3.Scale(userToScreen, new Vector3(1, 1, 0));

Thank you very much!