Hello, I’ve been needing to scale character models for quite a while now and I just can’t seem to figure this out on my own, I know how to scale the model and it works if there is no rotation but as soon as I add some some rotation it goes completely bonkers
No rotation growing
Growing with some rotation
my goal is for the script to account for both the orientation of the PrimaryPart and the other Parts inside of the model
Script
local Worm = workspace:WaitForChild("Worm")
function Scale(Model, Scale) -- loops through model and scales
local Primary = Model.PrimaryPart
local PrimaryCFrame = Primary.CFrame
for i, Part in pairs(Model:GetChildren()) do
if Part:IsA("BasePart") then
Part.Size = (Part.Size * Scale) -- scales the part
if Part ~= Primary then
Part.CFrame = (PrimaryCFrame + (PrimaryCFrame:inverse() * Part.Position * Scale)) -- if the part isnt the primary part scale the position
end
end
end
end
while true do
wait(.3)
Scale(Worm, 1.02)
end
I researched quite heavily on this but I couldn’t find anything that scales with orientation
most of the code I got right now is from Is this the best way to scale a model? which is useful but only really works with stationary models with no rotation
I don’t know if this is simple and it’s just going over my head any help would be amazing
function Scale(Model, Scale) -- loops through model and scales
local Primary = Model.PrimaryPart
local PrimaryCFrame = Primary.CFrame
for i, Part in pairs(Model:GetChildren()) do
if Part:IsA("BasePart") then
Part.Size = (Part.Size * Scale) -- scales the part
if Part ~= Primary then
Part.CFrame = PrimaryCFrame:ToWoldSpace(PrimaryCFrame:ToObjectSpace(Part.CFrame)*Scale)
-- if the part isnt the primary part scale the position
end
end
end
end
Note that I really suck at math with CFrames, and I’m on mobile so I couldn’t test it.
Sorry, I really over complicated it. To get the scaled position you would find the Vector (Part.Position-PrimaryPartPosition) then multiply that by scale. Then add the primary parts position back. In code it would be like this
function Scale(Model, Scale) -- loops through model and scales
local Primary = Model.PrimaryPart
local PrimaryCFrame = Primary.CFrame
for i, Part in pairs(Model:GetChildren()) do
if Part:IsA("BasePart") then
Part.Size = (Part.Size * Scale) -- scales the part
if Part ~= Primary then
Part.Position = PrimaryCFrame.Position + (Part.Position-PrimaryCFrame.Position)* Scale
-- if the part isnt the primary part scale the position
end
end
end
end
Although positions don’t include rotation data this would still work. This is because a vector is both a magnitude and a direction. So when you calculate target-pos it tells you which direction it is and how far away. If you multiply it by a number it only changes the distance and not the direction.
I would recommend anchoring all the parts before resizing or you’ll get very unpleasant results
Code
local function ScaleModel_Func(Model, Scale)
local BaseParts = {}
local PrimaryPart = Model.PrimaryPart
local PrimaryPartCFrame = PrimaryPart.CFrame
for _,v in pairs(Model:GetDescendants()) do
if v:IsA('BasePart') then
BaseParts[v] = v.Anchored
v.Anchored = true
v.Size = (v.Size * Scale)
if v ~= PrimaryPart then
v.Position = PrimaryPartCFrame.Position + (v.Position-PrimaryPartCFrame.Position)* Scale
end
end
end
for i,v in pairs(BaseParts) do
i.Anchored = v
end
end
I also ran into a weird issue, not sure how to fix or why it’s occurring
After resizing multiple times it looks fine on the Server but looks horrible on the Client.
