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What do you want to achieve?
I want to make a ring that can be change real time such as size and thickness:
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What is the issue?
If I use a union or a mesh, the middle hole size gets scaled as well which I don’t want
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What solutions have you tried so far?
I tried using a 0.99 transparency glass material part in the middle but it made it shiny which I want to avoid
Its a bit hard to understand what you mean by ‘ring’
Do you mean with parts? Such as unions? Where one smaller cylinder is removed from the center of a larger cylinder?
I noticed you said Unions, but couldn’t you just create a new union and destroy the old one, but the new one have a larger or smaller inner cylinder?
Maybe this would help, sorry I don’t quite understand.
https://create.roblox.com/docs/reference/engine/classes/BasePart#SubtractAsync
Yes, that is exactly what I mean, a smaller cylinder be removed from the center.
And wouldn’t making a new union real time be costly with performance?
Honestly I am not familiar enough with making unions to know, I would think it a pretty cheap process if you are just hollowing a cylinder, but, idk.
What is your use case? What are you doing with the ring, and how often do you need to resize (scale) it?
I want to make a ring for a tower defense game for stuff such as range (the hollowed out is for showing how close you can place towers together or for towers that move in a circle around the placement position to show their travel path) and I would need to update it pretty much almost every frame as I want my ring to scale when once you click on a tower to visualize it’s range
Forgive me, if I am just totally not getting it, but wouldn’t you only need to update the scale of the ring, each time you clicked a tower? That would be once per click.
Also, if each tower has a set range (such as Tower Type A, has rage 4, and Tower Type B has range 2) couldn’t you just at server startup or even client login, generate 1 ring per tower type, and store in replicated storage, to be cloned and displayed when the corresponding tower is selected?
Or even if the tower’s values can change, such as upgrades, you could still generate one ring per tower, and keep it in replicated, and only modify it when the tower is upgraded.
While yes, I could do that, but I want the ring to have an animation where it scales up in a short period of time
depending on the use case, you could probably just use two cylinders
just make a thinner one, and then a slightly thicker one
the thinner one will be bigger and control the overall size
and the thicker one will be smaller and control the hole size and width
but if that doesnt match with what you’re going for you could use some trig lol
The problem with that is that the color would still be different and make it a have a tint of the bigger one and the range visualizers are slightly transparent
Well, my final suggestion is, maybe just try the union bit, and see how expensive it is.
Other than that, maybe its ok to have 2 colors of cylinders, instead of the inner one being clear (hollow) maybe have it a different color to represent the inner area.
Ok, try this… it uses beams.
VariableRings.rbxl (37.5 KB)
function CreateRing(numParts)
local model = Instance.new("Model")
local part = Instance.new("Part")
part.CanCollide = false
part.CanQuery = false
part.CanTouch = false
part.Anchored = true
part.Size = Vector3.new(1,1,1)
part.Transparency = 1
local att = Instance.new("Attachment")
att.Parent = part
att.CFrame = CFrame.new()*CFrame.Angles(0,0,math.rad(90))
att.Name = "Attachment"
local beam = Instance.new("Beam")
beam.Segments = 1
beam.Width0 = 1
beam.Width1 = 1
beam.Attachment0 = att
beam.Parent = part
local deg = 360/numParts
for n = 1,numParts do
local p = part:Clone()
p.Name = "Part"..n
p.CFrame = CFrame.new()*CFrame.Angles(0,math.rad((n-1)*deg),0)
p.Attachment.CFrame = p.Attachment.CFrame + Vector3.new(5,0,0)
p.Parent = model
end
for n = 1,numParts do
local p = model:FindFirstChild("Part"..n)
if n < numParts then
p.Beam.Attachment1 = model:WaitForChild("Part"..(n+1)).Attachment
else
p.Beam.Attachment1 = model:WaitForChild("Part1").Attachment
end
end
return model
end
function ResizeRing(ring,innerRadius,outterRadius)
if innerRadius>= outterRadius then
return
end
local width = outterRadius - innerRadius
local pos = innerRadius+(width/2)
for n = 1,#ring:GetChildren() do
local part = ring:FindFirstChild("Part"..n)
part.Attachment.Position = Vector3.new(pos,0,0)
part.Beam.Width0 = width
part.Beam.Width1 = width
end
end
function ColorRing(ring,colorSequence,transparencySequence)
for n = 1,#ring:GetChildren() do
local part = ring:FindFirstChild("Part"..n)
part.Beam.Color = colorSequence
part.Beam.Transparency = transparencySequence
end
end
------ Implementation
local myRing = CreateRing(24)
myRing.Parent = workspace
myRing:PivotTo(CFrame.new(0,1,0))
ResizeRing(myRing,5,20)
ColorRing(myRing,ColorSequence.new(Color3.new(0, 0, 1)),NumberSequence.new(0))
1 Like
Guy, this’s one is very easy. Use cylinder handle adornment, and change InnerRadius for hole. Don’t forgot to set adornee. ALso, If you need it uniteractable, make it into workspace.
2 Likes
This is exactly what I want, thank you!