Get pixel size of canvas that is being rendered on camera

Question

How do I get the size (both height and width) of the canvas that is being rendered on my camera?

Say I have a canvas of size 20,0000 width x 10,000 height and a zoomable orthogonal camera. I want to figure how many pixels of the canvas is being rendered. This should vary on different screen resolution and camera zoom size.

Thanks in advance.

Answer 1

Best Answer

Answer by __SHADE · Oct 05, 2016 at 05:58 PM

I'm being silly. No more working late for me. I can get it by using the ViewportToWorldPoint and compare left to right for width or top to bottom for height like so:

 //Get height
 camera.ViewportToWorldPoint(new Vector3(0, 0, 0)) - camera.ViewportToWorldPoint(new Vector3(0, 1f, 0))
 
 //Get width
 camera.ViewportToWorldPoint(new Vector3(0, 0, 0)) - camera.ViewportToWorldPoint(new Vector3(1f, 0, 0))

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Get pixel size of canvas that is being rendered on camera

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