GeometryService

local GeometryService = game:GetService("GeometryService")

local mainPart = workspace.PurpleBlock
local otherParts = { workspace.BlueBlock }

local options = {
	CollisionFidelity = Enum.CollisionFidelity.Default,
	RenderFidelity = Enum.RenderFidelity.Automatic,
	SplitApart = true,
}

local constraintOptions = {
	tolerance = 0.1,
	weldConstraintPreserve = Enum.WeldConstraintPreserve.All,
	dropAttachmentsWithoutConstraints = false,
}

-- Perform subtract operation in pcall() since it's asyncronous
local success, newParts = pcall(function()
	return GeometryService:SubtractAsync(mainPart, otherParts, options)
end)

if success and newParts then
	-- Loop through resulting parts to reparent/reposition
	for _, newPart in pairs(newParts) do
		newPart.Parent = mainPart.Parent
		newPart.CFrame = mainPart.CFrame
		newPart.Anchored = mainPart.Anchored
	end

	-- Calculate constraints/attachments to either preserve or drop
	local recommendedTable = GeometryService:CalculateConstraintsToPreserve(mainPart, newParts, constraintOptions)

	-- Preserve constraints/attachments based on recommended table
	for _, item in pairs(recommendedTable) do
		if item.Attachment then
			item.Attachment.Parent = item.AttachmentParent
			if item.Constraint then
				item.Constraint.Parent = item.ConstraintParent
			end
		elseif item.NoCollisionConstraint then
			local newNoCollision = Instance.new("NoCollisionConstraint")
			newNoCollision.Part0 = item.NoCollisionPart0
			newNoCollision.Part1 = item.NoCollisionPart1
			newNoCollision.Parent = item.NoCollisionParent
		elseif item.WeldConstraint then
			local newWeldConstraint = Instance.new("WeldConstraint")
			newWeldConstraint.Part0 = item.WeldConstraintPart0
			newWeldConstraint.Part1 = item.WeldConstraintPart1
			newWeldConstraint.Parent = item.WeldConstraintParent
		end
	end

	-- Destroy original parts
	mainPart.Parent = nil
	mainPart:Destroy()
	for _, otherPart in pairs(otherParts) do
		otherPart.Parent = nil
		otherPart:Destroy()
	end
end

local GeometryService = game:GetService("GeometryService")

local mainPart = workspace.PurpleBlock
local otherParts = { workspace.BlueBlock }

local options = {
	CollisionFidelity = Enum.CollisionFidelity.Default,
	RenderFidelity = Enum.RenderFidelity.Automatic,
	SplitApart = true,
}

-- Perform intersect operation in pcall() since it's asyncronous
local success, newParts = pcall(function()
	return GeometryService:IntersectAsync(mainPart, otherParts, options)
end)

if success and newParts then
	-- Loop through resulting parts to reparent/reposition
	for _, newPart in pairs(newParts) do
		newPart.Parent = mainPart.Parent
		newPart.CFrame = mainPart.CFrame
		newPart.Anchored = mainPart.Anchored
	end

	-- Destroy original parts
	mainPart.Parent = nil
	mainPart:Destroy()
	for _, otherPart in pairs(otherParts) do
		otherPart.Parent = nil
		otherPart:Destroy()
	end
end

local GeometryService = game:GetService("GeometryService")

local mainPart = workspace.BlueCylinder
local otherParts = { workspace.PurpleBlock }

local options = {
	CollisionFidelity = Enum.CollisionFidelity.Default,
	RenderFidelity = Enum.RenderFidelity.Automatic,
	SplitApart = true,
}

-- Perform subtract operation in pcall() since it's asyncronous
local success, newParts = pcall(function()
	return GeometryService:SubtractAsync(mainPart, otherParts, options)
end)

if success and newParts then
	-- Loop through resulting parts to reparent/reposition
	for _, newPart in pairs(newParts) do
		newPart.Parent = mainPart.Parent
		newPart.CFrame = mainPart.CFrame
		newPart.Anchored = mainPart.Anchored
	end

	-- Destroy original parts
	mainPart.Parent = nil
	mainPart:Destroy()
	for _, otherPart in pairs(otherParts) do
		otherPart.Parent = nil
		otherPart:Destroy()
	end
end

local GeometryService = game:GetService("GeometryService")

local mainPart = workspace.BlueBlock
local otherParts = { workspace.PurpleCylinder }

local options = {
	CollisionFidelity = Enum.CollisionFidelity.Default,
	RenderFidelity = Enum.RenderFidelity.Automatic,
	SplitApart = false,
}

-- Perform union operation in pcall() since it's asyncronous
local success, newParts = pcall(function()
	return GeometryService:UnionAsync(mainPart, otherParts, options)
end)

if success and newParts then
	-- Loop through resulting parts to reparent/reposition
	for _, newPart in pairs(newParts) do
		newPart.Parent = mainPart.Parent
		newPart.CFrame = mainPart.CFrame
		newPart.Anchored = mainPart.Anchored
	end

	-- Destroy original parts
	mainPart.Parent = nil
	mainPart:Destroy()
	for _, otherPart in pairs(otherParts) do
		otherPart.Parent = nil
		otherPart:Destroy()
	end
end