Tricky Maths Equation

Help and Feedback Scripting Support
#1

I am trying to make a FOV slider with boundaries from 45 to 95 but there is a problem currently while trying to update the slider to a default value (being 80).

(Variables used in the code)

Min = 45
Max = 95

Here is my code (The issue is in the CalculateScale function):

image
image806×466 98.8 KB

Results:
image
0.2796 is much lower than it should be
image
somehow it calculates 58 as opposed to 80, obviously there is a fault in my maths but I don’t know what it is.
image

Here’s a diagram if you need it

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image700×114 41.8 KB

Thanks

2 Likes
#2

I forgot to Include the CalculateValue function,
CalculateValue works fine but I’ll include it here
image

#3

You can use this function to map your values.

function Map(n, inMin, inMax, outMin, outMax)
	return (outMin + ((outMax - outMin) * ((n - inMin) / (inMax - inMin))))
end


print(Map(2, 1, 2, 45, 95))

This example maps your min (45) and max (95) between the numbers 1 and 2.
Input 2 will give your max value.

You can edit the values as you want.

1 Like
#4

If you want someone’s help don’t try and make their life harder, take every screenshot of a code and paste it as an actual code with this image. This way we can copy-paste it to the studio and debug it.

1 Like
#5

What do you mean? How am I making it harder for you?

#6

If we want to place your code in a test project and debug it, we will have to copy it from an image which is not as convenient as taking it from a code section.
For example:
Copying this to my project

image
image754×136 43.6 KB

Is not as easy as copying this

local function CalculateValue(scale)
	local v = Min + ((Max - Min) * clamp(scale, 0, 1))
	
	return floor(v)
end

Btw, just like you did at the beginning with

Min = 45
Max = 95

It also looks way better than a bunch of pictures with different sizes [=

#7

Fair enough, sorry about that.

1 Like
#8 
local minValue = 45
local maxValue = 95
local delta = maxValue - minValue

local function ValueToScale(value)
    local scale = (value - minValue) / delta
    return math.clamp(scale, 0, 1)
end

local function ScaleToValue(scale)
    local value = scale * delta + minValue
    return math.clamp(value, minValue, maxValue)
end
2 Likes
#9

Wow! This works, thank you so much for you reply!

#10

Didn’t mean to sound negative, keep up the good work and keep asking questions [=