Scale to Offset Math

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#1

I’m trying to convert an objects size in scale to offset via math

image
image753×394 183 KB

See how it says the size in offset on the bottom right of the check image even though it’s in scale, I’m trying to replicate this, but in a script

I’ve tried looking through the forum and the web and the only things I could find are plugins but I need the math

If anyone knows the math, or other solutions post below :slight_smile:

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Can Vector2 values be converted to UDIM2 values
How to increase OffSet size?
#2

offset_x = screen_size.X * scale.X

You get the screen size by looking at the AbsoluteSize property of the ScreenGui

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#3

The object’s scale property is based on the parent’s AbsoluteSize/AbsolutePosition. All you need to do is multiply the scale value by the AbsolutePosition of the parent.

Edit:
I misread the post…
offset = UDim2.new(0, image.Parent.AbsolutePosition.X*image.Position.X.Scale+image.Position.X.Offset, 0, image.Parent.AbsolutePosition.Y*image.Position.Y.Scale+image.Position.Y.Offset)

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#4

Thanks, both of you :smiley:

I wish I could give two solutions but I went with @Hexcede’s because he provided more a more in-depth solution

Converting Scale to Offset
#5

I found a better method by accident going to post it here because it’s more efficient as you don’t need to do the math to get the offset from scale, and this works with constraints such as
UIAspectRatioConstraint

you take the absolute size directly from the GuiObject you want to convert into offset from scale as shown below

image
there is no need to do the math if you do it this way

Example:

function Resize_Offset()
local AB_Size = LogoBase.Parent.AbsoluteSize
local LB_Size = LogoBase.AbsoluteSize
--Logo.Size = UDim2.new(0, AB_Size.X * LB_Size.X, 0, AB_Size.Y * LB_Size.Y) -- Previous Method which uses math then sets the UDim2
  Logo.Size = UDim2.new(0, LB_Size.X, 0, LB_Size.Y) -- newer method which just reads a value and then sets the UDim2
  print(LB_Size)
end
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#6

Adding onto this, I use this method when I display images in an inventory/shop. I would divide the AbsoluteSize.X by a certain number, and assign the offset on X and Y to that offset.

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#7

Keep in mind that this method will break if you’re using a folder, and it may be a better idea to use image:FindFirstAncestorWhichIsA("GuiBase2d") than image.Parent.

Edit: Replied to the wrong post, meant to reply to @Hexcede.

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#9

My bad, I meant to reply to someone else. Your method is definitely fine.

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