Making a GUI object more/less visible the bigger/lower a value is

[arrowbutcool (arrow)]

I am trying to make something more/less visible the bigger/lower this Angle value is, the Angle value being the angle between the camera and a certain part, but it’s not going right and just doesn’t flat out work properly.

The limit for visibility is 0.5, which is what data[“Effects”][“Shear”] is.

angleValue:GetPropertyChangedSignal("Value"):Connect(function()
	task.wait()
	if angleValue.Value > baseAngle then
		print("is not seen")
		player.PlayerGui.FightGUI.Static.ImageTransparency = 1
	end
	
	if angle >= data["Angle"]["Min"] and angle <= data["Angle"]["Max"] then
		if angleValue.Value > angleFromBefore then -- the new value is greater than the starting value
			--bigger
			print("bigger")
			if player.PlayerGui.FightGUI.Static.ImageTransparency < data["Effects"]["Shear"] then
				player.PlayerGui.FightGUI.Static.ImageTransparency -= 0.05
			else
				player.PlayerGui.FightGUI.Static.ImageTransparency = data["Effects"]["Shear"]
			end
		elseif angleValue.Value < angleFromBefore then -- the new value is smaller than the starting value
			--smaller
			print("smaller")
			if player.PlayerGui.FightGUI.Static.ImageTransparency > 1 then
				player.PlayerGui.FightGUI.Static.ImageTransparency += 0.05
			end
		end
	end
	
	angleFromBefore = angleValue.Value
end)

[7z99 (cody)]

Well if we know what the minimum and maximum angles are, we could perform a simple inverse lerp to find out what percentage the angle is between the min and max angle, then we can use this as an alpha for interpolating the image transparency between 0.5 and 1

local function inverseLerp(min, max, x)
	return (x - min) / (max - min)
end

local function lerp(min, max, alpha)
	return min + (max - min) * alpha
end

local minAngle = 0
local maxAngle = 120
local currentAngle = 60

local minTransparency = 0.5
local maxTransparency = 1

local alpha = inverseLerp(minAngle, maxAngle, currentAngle) --> 0.5
local transparency = lerp(minTransparency, maxTransparency, alpha) --> 0.75

However since we’re working with 0.5 and 1 being the lower and upper bounds specifically, we can simplify as so:

local alpha = inverseLerp(minAngle, maxAngle, currentAngle) --> 0.5
local transparency = minTransparency * alpha + 0.5 -- 0.75

However note that will only work with 0.5 and 1 being the lower and upper boundaries. If you want to use arbitrary lower and upper boundaries you would need the full equation.

[arrowbutcool (arrow)]

This works perfectly! Thank you so much, this is way better than what I ended up doing in the end!