Hi, I'm making a billboard gui. When a player gets close, the billboard gui becomes twice as small. But how can I calculate how big it should be when it is twice as small?
for i, child in pairs(billboardgui:GetChildren()) do
local halfsize = child.Size <==
child:TweenSize(halfsize)
end
As per the API reference and what DeceptiveCaster said, using a UDim2 involves four properties: xScale, xOffset, yScale, & yOffset
ex. a GuiObject with the size of UDim2.new(1, 0, 1, 0) will take up 100% of the space (both x and y axes) of the parent object.
A potential way to get half the size of a UDim2 is to subtract the the value of the scale properties by 0.5. (Using a math operation between the size of the GuiObject and a new UDim2 with 50% scale on whichever axes you want to halve.)
https://developer.roblox.com/en-us/api-reference/datatype/UDim2#math-operations
Thanks
This might help:
local billboardgui = script.Parent.BillboardGui
wait(5)
--// function for dividing Scale and offset of a UDim2 vector space
function HalfUDim2(sze)
local UD2W = sze.Width
local UD2H = sze.Height
--// make sure any element are Not 0 if they are, then just set Half Scale/Offset to 0
--// if we didn't check this we would be dividing by 0 which is impossible!
--// format Scale not eq = 0 then set Scale/2 or set it to 0
local XS = UD2W.Scale ~=0 and UD2W.Scale/2 or UD2W.Scale
local XP = UD2W.Offset ~= 0 and UD2W.Offset/2 or UD2W.Offset
local YS = UD2H.Scale ~=0 and UD2H.Scale/2 or UD2H.Scale
local YP = UD2H.Offset ~= 0 and UD2H.Offset/2 or UD2H.Offset
return UDim2.new(XS,XP,YS,YP)
end
for i, child in pairs(billboardgui:GetChildren()) do
local halfsize = HalfUDim2(child.Size)
local halfpos = HalfUDim2(child.Position)
child:TweenSizeAndPosition(halfsize, halfpos) -- changed this as we're changing the size of each element, what you had before only resized the elements but not change the position so i've included it into this equation with the above function!
end
let me know if you need more info!
Hope this helps!
Exactly what i needed! :D
for i, child in pairs(billboardgui:GetChildren()) do
local halfsize = child.Size/2
child:TweenSize(halfsize)
end
It gives an error in my output and does not work: ''Attempt to perform arithmetic (div) on UDim2 and number.''
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2 comments
UDim2 values consist of, to my knowledge: UDim2.X, UDim2.X.Offset, UDim2.Y, UDim2.Y.Offset. If this is not correct, please inform me.
Could you give an example? I only worked with TweenService on Frame tweening positions