How to get coordinates of viewport corners?

Hi. I am working on a 360 video related project which uses HTC-Vive.

I want to get the current coordinates of viewport corners. An example is drawn below.



I was able to extract Yaw, Pitch, and Roll by accessing "Camera.main.transform.rotation.eulerAngles.y" and when I move the HTC-Vive headset, it seems to work properly.

However, I am not sure how I can get the current coordinates of viewport corners as I mentioned above.

It seems that "Vector3 v3 = Camera.main.ViewportToScreenPoint(new Vector3(0, 0, 0));" can be used to extract the point in the above picture (30,30) but it gives nothing now.

Any ideas?

Thank you.

 

Hi @khg2478,

It sounds like Camera.pixelRect is what you want.
https://docs.unity3d.com/ScriptReference/Camera-pixelRect.html

or you can use Camera.rect, taking into account the screen width and height, to derive the viewport corner coordinates.
https://docs.unity3d.com/ScriptReference/Camera-rect.html

 

Hi @BrandonFogerty,

I am new to Unity and figured out that I misunderstood the concept of viewport, screen, and world.

My question was in fact there will be other ways to match a point of pixel coordinates in screen to a point in original equirectangular photo. This information is important to me because my research is related to gaze position of users.

Do you have any recommendations to this matter in the circumstance of Unity environment?

Thank you.