How can I manipulate the camera based on screen resolution / aspect ratio?

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#1

I found this post which suggests how the camera’s cframe can be changed to stretch or tilt the camera.

Taking the aspect ratio of the player’s current screen, how could I calculate the cframe if it was scaled down to 4:3 or any other aspect ratio? Is there a simple formula for this?

a good example for what i want is on the ffmpeg wiki:
original image (4:2)
image
scaled down to 320x240 (4:3)
!
image

If anyone responds, thank you in advance!

2 Likes
#2

The post linked appears to have an explanation for how to accomplish what it displays.

#3

it does stretch the screen, but the change can’t be the same for every screen because not every player uses the same monitor with the exact same dimensions.

#4

Have you tested this? Or are you assuming it doesn’t work?

#5

i have tested it. I am not saying it doesn’t work. please reread.

#6

sorry, it appears i have misread. The change is the same on each screen, which is not what i want. apologies for rudeness.

#7

Why do you need it to be different on different screens? Just wondering.

#8

I find the stretch funny and I want to see if it can be taken further. might be useful in very specific cases, but I am not certain.

#9

You can probably get the screen aspect ratio and modify the stretch values based on that, I’m not sure what scaling you want because the formula varies based on it.

#10

this is what i want to aim for, I just want to see if anyone on the site can provide a formula I can use to implement.

#11

You can probably just do simple scaling like making the width scale the height of the screen to the power of 2.

#12

I think I have found something that works.
When I get the aspect ratio of something like 4:3 down to 1.333:1, I can do something like this
CFrame.new(X, Y, Z, R00 /1.333, R01, R02, R10, R101 /1, R12, R20, R21, R22)
this should get me what I want. sorry for the troubles!

1 Like
#13

I realized that this method was still constant and did not adapt to the screens of players. I made a script that I think works for me. Here’s the script!

local rs = game:GetService("RunService")

local x, y = 16, 9 -- this is the aspect ratio that looks normal
local aspectratio = x/y 

local cam = workspace.CurrentCamera
local vpsize
local cframe = CFrame.new(0,0,0,1,0,0,0,1,0,0,0,1)

rs.RenderStepped:Connect(function()
	vpsize = cam.ViewportSize
	local R00 = (vpsize.X / vpsize.Y) / x
	local R11 = 1 / y
	print(R00, R11)
	cframe = CFrame.new(0,0,0,R00,0,0,0,R11,0,0,0,1)
	cam.CFrame *= cframe
	cam.FieldOfView = 70 / y
end)