How to check if region3 is not detected by a part

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1

Hi, im currently using a script that clones parts into a viewport that only region3 detects, however Im trying to make it so it will delete the parts it cannot see.

Code:

--Ignore list/Whitelist for the region3
local ViewportHandler = require(script.ViewportHandler)
local staticDelay = 60 -- the amount of time it takes to update static parts, in steps
local VF_Handler = ViewportHandler.new(script.Parent.ViewportFrame)
local renderDistance = 100
local list = {workspace.ViewportPart, workspace.CamPart, humanoidcurrent}
local PartLimit = 100

local camera = Instance.new("Camera", script.Parent) -- Create the camera
camera.CFrame = script.Parent.Adornee.CFrame + script.Parent.Adornee.CFrame.LookVector*2

local viewport = script.Parent.ViewportFrame

viewport.CurrentCamera = camera


local function renderStatic()
	--Create the region3 to detect the parts
	local center = (camera.CFrame.LookVector*renderDistance)/2
	local corner = Vector3.new(renderDistance/2,renderDistance/4,renderDistance/2)
	local renderRegion = Region3.new(center - corner, center + corner)
	
	--Get all parts within the region
	local parts = workspace:FindPartsInRegion3WithIgnoreList(renderRegion, list, PartLimit)
	--Loop through the parts
	for i,v in pairs(parts) do
		if v.ClassName == "Part" or v.ClassName == "MeshPart" or v.ClassName == "BasePart" or v.ClassName == "SpawnLocation" or v.ClassName == "CornerWedgePart" or v.ClassName == "WedgePart" or v.ClassName == "Decal" or v.ClassName == "SpecialMesh" then
			if not v.Parent:FindFirstChild("Humanoid") then
				if not v.Parent.Parent:FindFirstChild("Humanoid") then
					if not v:FindFirstChild("Render1") then
						render1 = Instance.new("BoolValue")
						render1.Name = "Render1"
						render1.Parent = v
						partcurrent = VF_Handler:RenderObject(v,workspace.Commands.FPS.Value)
						end
				end
			end
		end
		if v.ClassName == "Model" then
			if v:FindFirstChild("Humanoid") then
				if v ~= game.Players.LocalPlayer.Character then
					if not v:FindFirstChild("Render2") then
						render2 = Instance.new("BoolValue")
						render2.Name = "Render2"
						render2.Parent = v
						humanoidcurrent = VF_Handler:RenderHumanoid(v,workspace.Commands.FPS.Value)
						end
				end
			end
		end
		if not v then -- doesn't detect
			if partcurrent == v then
				render1:Destroy()
				partcurrent:Destroy()
			end
			if humanoidcurrent == v then
				render2:Destroy()
				humanoidcurrent:Destroy()
			end
	end
	end
end

game:GetService("RunService").RenderStepped:Connect(function()
	renderStatic()
end)
2

You could cache all the active rendered objects in a dictionary, and then iterate through the dictionary seeing if anything is missing from the collection of parts returned from FindPartsInRegion3

3

haha. funny story is… This is my first time using region3 and I have no idea what im doing… do I put all of the objects that are seen in the viewport and keep them in a table, and every time it refreshes it will see if there is anything missing, then if there IS something missing do I just delete that part?