Model's Size After Rotation

[ArtsicleOfficial]

How do I find a model’s size after rotation? :GetExtentsSize doesn’t work because it compensates for the rotations done by :SetPrimaryCFrame. Is there any simple way to do this?

[Jaycbee05 (Jaycbee)]

if i understand your question correctly, Are you looking for GetBoundingBox?

[ArtsicleOfficial]

local _,Size = Model:GetBoundingBox() gave me the same result as I got with :GetExtentsSize()
There’s probably a way to use the orientation you get from Model:GetBoundingBox() to transform the size, but I don’t know exactly how. I’d appreciate some help on that if possible.

[Jaycbee05 (Jaycbee)]

i think i understand your problem now Hopefully…, you are looking to find the axis aligned minimum bounding box /size of a model right? like this?

if so, i actually don’t know of any easy transformation to do this with just the orientation and the size. However you should be able to use :

How does Roblox calculate the Bounding Boxes on Models/:GetExtentsSize()?

Here’s what I came up with. It returns the CFrame + Size of the bounding box. This uses some code from zeuxcg’s bounding box (Annotated source of fastComputeAABB and fasterComputeAABB with notes for expensive lines · GitHub) function GetBoundingBox(model, orientation) if typeof(model) == "Instance" then model = model:GetDescendants() end if not orientation then orientation = CFrame.new() end local abs = math.abs local inf = math.huge local minx, miny, minz = inf, inf, inf local max…

[ArtsicleOfficial]

Ah, thanks! That function was really easy to modify to get this working for me. If anyone stumbles upon this in the future, in short, the solution was to take that function and delete the orientation variable.
My code is working flawlessly now!