MouseDelta but for Camera instead

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#1

currently working on scope shadow, i calculate scope shadow using the mouse delta but id like the shadow to move with the camera rather than the mouse. i would need a way to transform camera movement into a delta and it should go back to 0 again once cam stops moving. ability to extrapolate X and Y delta as well

just like mouse delta and it would have to behave like mousedelta for functionality, anybody know a way?

#2

Check if the Camera CFrame is moving.

#3

I’m confused, is the camera moving on a 2D plane? Do you need to calculate this when the camera stops moving or during each render step?

#4

id have to calculate each renderstep, i want to replicate what userinputservice:GetMouseDelta() does, but instead of it returning the mouse delta it returns a sort of ‘camera’ delta. a vector2 with the x and y value which turn to 0 if camera stops moving, just like mousedelta if you stop moving the mouse

#5

im looking to replicate exact userinput:getmousedelta() functionality but instead with mouse with camera

#6

Since the Camera’s position is represented by a CFrame, you can’t represent it as a Vector2. However, you can still get its Delta by multiplying the inverse of the current CFrame to the one from the last frame (Essentially subtracting).

local CameraDelta: CFrame = CFrame.identity
local CameraLast: CFrame = CurrentCamera.CFrame

local function UpdateDelta(): () -- Hook with Camera priority or something
	CameraDelta = CurrentCamera.CFrame:Inverse() * CameraLast
	CameraLast = CurrentCamera.CFrame
end
1 Like
#7

thank you this is a great start i have a question tho, how would i extract X and Y delta
so that i may multiply specific other values with the delta X value for example?

#8

Well, a CFrame has positional and rotational data, so it depends on what you are trying to do. I would say if you’re trying to get the rotational delta you should use CameraDelta:ToEulerAnglesXYZ() and get the returned X and Y values.

#9

the code you sent me is very great, just one more thing is missing and that is how would i reset the delta to 0 again like mousedelta, as in it moves, the delta jumpes from 0 to 6 and then back to 0 again

#10

What exactly are you asking? The camera’s position delta? I’m just confused by what you mean to convert it into a Vector2.

#11

yeah the cameras position delta, ill edit vector2 it out since i just threw that in there because of the correlation to it to mouse delta

#12

Alright, sorry. That would’ve just worked for the positional values for the CFrame.

I believe this is what you want:

local X1, Y1 = CurrentCamera.CFrame:ToEulerAnglesXYZ()
local X2, Y2 = CameraLast:ToEulerAnglesXYZ()

local Delta = Vector2.new(X1 - X2, Y1 - Y2)

CameraLast = CurrentCamera.CFrame
2 Likes
#13

Is a delta between each frame what you wanted?


local player = game.Players.LocalPlayer

local camera = workspace:WaitForChild("Camera")

local mouse = player:GetMouse()


local lastPos = camera.CFrame.Position
mouse.Move:Connect(function()
	local diff = camera.CFrame.Position - lastPos
	lastPos = camera.CFrame.Position
	if diff.Magnitude > 0 then	
		print("Camera move: "..tostring(diff))
	end
end)
1 Like
#14

yeah thanks so much man this worked, thanks to others who tried to help as well

#15

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