How to split a part from it's center

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#1

How would I go about splitting a part directly at its center into two other parts? I have looked all around but I can’t seem to find anything besides the part cutting plugin, but I was looking for another way before “stealing” code from another plugin.

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#2

What’d you’d probably want to check out is the BasePart:SubtractAsync() method. What that does is creates union operations with negated parts. This could simulate the ‘splitting effect’ you desire. I’ll attach a wiki post that will go into some further explanation with visuals/code examples :slight_smile:

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#3

I was looking more for a splitting function that actually splits the part into two parts and not negate the two. I am working on building shortcuts, so splitting it with negations wouldn’t help with building.

#4 
local function cutFromCenter(part, sizeToHalve)
    local size = part.Size
    local mulVec, newSize
    if sizeToHalve == "X" then
        mulVec = Vector3.new(size.X/2, 0, 0)
        newSize = Vector3.new(size.X/2, size.Y, size.Z)
    elseif sizeToHalve == "Y" then
        mulVec = Vector3.new(0, size.Y/2, 0)
        newSize = Vector3.new(size.X, size.Y/2, size.Z)
    else mulVec = Vector3.new(0, 0, size.Z/2)
        newSize = Vector3.new(size.X, size.Y, size.Z/2)
    end
    local cf = part.CFrame
    part.Position = cf*mulVec
    part.Size = newSize
    local clone = part:Clone()
    clone.Position = cf*(-mulVec)
    clone.Parent = part.Parent
    return part, clone
end

Edit: edited a little, but the edits shouldn’t change its behavior

7 Likes
#5

This splits it into multiple parts and not into just two parts. It also spaces them out.

#6

Are you sure that you are only calling it once? It only creates one clone so I don’t understand how it could split it into multiple parts.

1 Like
#7

For some reason it keeps firing over and over and over and I can’t stop it.

#8

There’s actually a really great article that talks about this on Scripting Helpers. See for yourself.

2 Likes
#9

This should work good, works with rotated parts as well as any axis you want it to split.

local function SplitFromCenter(Part,Axis)
	local Clone1 = Part:Clone()
	local Clone2 = Part:Clone()
	
	Clone1.Size = Part.Size - (Vector3.fromAxis(Axis)*Part.Size*0.5)
	Clone2.Size = Clone1.Size
	
	Clone1.CFrame = Part.CFrame * CFrame.new(Vector3.fromAxis(Axis)*Clone1.Size*0.5)
	Clone2.CFrame = Part.CFrame * CFrame.new(Vector3.fromAxis(Axis)*Clone2.Size*-0.5)
	
	return Part,Clone1,Clone2
end

local Part,Clone1,Clone2 = SplitFromCenter(workspace.Part,Enum.Axis.X)
Part:Destroy()
Clone1.Parent = workspace
Clone2.Parent = workspace
1 Like
#10

Could you show the code where you’re calling it?

#11

Try adding a debounce/cooldown too

#12

I fixed it, thank you!! It had to do with the script being parented under the part. (Don’t know how that affects it.)

#13

it was adding spaces between parts, try splitting the mulvec in two since its supposed to add 1/2 of distance, not 1

local function cutFromCenter(part, sizeToHalve)
    local size = part.Size
    local mulVec, newSize
    if sizeToHalve == "X" then
        mulVec = Vector3.new(size.X/2, 0, 0)
        newSize = Vector3.new(size.X/2, size.Y, size.Z)
    elseif sizeToHalve == "Y" then
        mulVec = Vector3.new(0, size.Y/2, 0)
        newSize = Vector3.new(size.X, size.Y/2, size.Z)
    else mulVec = Vector3.new(0, 0, size.Z/2)
        newSize = Vector3.new(size.X, size.Y, size.Z/2)
    end
    local cf = part.CFrame
    part.Position = cf*(mulVec / 2)
    part.Size = newSize
    local clone = part:Clone()
    clone.Position = cf*(-mulVec / 2)
    clone.Parent = part.Parent
    return part, clone
end

'Preciate ya tho, i would have likely been to lazy to write this, i will extend this to use it to bend car parts in my Racing Game

1 Like