-- helper function to determine if a character can be pushed upwards by a certain amount
-- character is 5 studs tall, we'll check a 1.5 x 1.5 x 4.5 box around char, with center .5 studs below torsocenter
local function spaceAboveCharacter(charTorso, newTorsoY, stampData)
	local partsAboveChar = game:GetService("Workspace"):FindPartsInRegion3(
		Region3.new(Vector3.new(charTorso.Position.X, newTorsoY, charTorso.Position.Z) - Vector3.new(.75, 2.75, .75),
		Vector3.new(charTorso.Position.X, newTorsoY, charTorso.Position.Z) + Vector3.new(.75, 1.75, .75)),
		charTorso.Parent,
		100)

	for j = 1, #partsAboveChar do
		if partsAboveChar[j].CanCollide and not partsAboveChar[j]:IsDescendantOf(stampData.CurrentParts) then return false end
	end

	if clusterPartsInRegion(Vector3.new(charTorso.Position.X, newTorsoY, charTorso.Position.Z) - Vector3.new(.75, 2.75, .75),
		Vector3.new(charTorso.Position.X, newTorsoY, charTorso.Position.Z) + Vector3.new(.75, 1.75, .75)) then
			return false
	end

	return true
end


local function findConfigAtMouseTarget(Mouse, stampData)
	-- *Critical Assumption* :
	--				This function assumes the target CF axes are orthogonal with the target bounding box faces
	--				And, it assumes the insert CF axes are orthongonal with the insert bounding box faces
	--				Therefore, insertion will not work with angled faces on wedges or other "non-block" parts, nor
	--				will it work for parts in a model that are not orthogonally aligned with the model's CF.

	if not Mouse then return nil end -- This can happen sometimes, return if so
	if not stampData then error("findConfigAtMouseTarget: stampData is nil") return nil end
	if not stampData["CurrentParts"] then return nil end

	local grid = 4.0
	local admissibleConfig = false
	local targetConfig = CFrame.new(0,0,0)

	local minBB, maxBB = getBoundingBox2(stampData.CurrentParts)
	local diagBB = maxBB - minBB

	local insertCFrame
	if stampData.CurrentParts:IsA("Model") or stampData.CurrentParts:IsA("Tool") then
		insertCFrame = stampData.CurrentParts:GetModelCFrame()
	else
		insertCFrame = stampData.CurrentParts.CFrame
	end

	if Mouse then
		if stampData.CurrentParts:IsA("Tool") then
			Mouse.TargetFilter = stampData.CurrentParts.Handle
		else
			Mouse.TargetFilter = stampData.CurrentParts
		end
	end

	local hitPlane = false
	local targetPart = nil
	local success = pcall(function() targetPart = Mouse.Target end)

	if not success then-- or targetPart == nil then
		return admissibleConfig, targetConfig
	end

	local mouseHitInWorld = Vector3.new(0, 0, 0)
	if Mouse then
		mouseHitInWorld = Vector3.new(Mouse.Hit.x, Mouse.Hit.y, Mouse.Hit.z)
	end

	local cellPos = nil

	-- Nothing was hit, so check for the default plane.
	if nil == targetPart then
		cellPos = GetTerrainForMouse(Mouse)
		if nil == cellPos then
			hitPlane = false
			return admissibleConfig, targetConfig
		else
			targetPart = game:GetService("Workspace").Terrain
			hitPlane = true
			-- Take into account error that will occur.
			cellPos = Vector3.new(cellPos.X - 1, cellPos.Y, cellPos.Z)
			mouseHitInWorld = game:GetService("Workspace").Terrain:CellCenterToWorld(cellPos.x, cellPos.y, cellPos.z)
		end
	end

	-- test mouse hit location
	local minBBTarget, maxBBTarget = getTargetPartBoundingBox(targetPart)
	local diagBBTarget = maxBBTarget - minBBTarget
	local targetCFrame = getMouseTargetCFrame(targetPart)

	if targetPart:IsA("Terrain") then
		local cluster = game:GetService("Workspace"):FindFirstChild("Terrain")
		local cellID = cluster:WorldToCellPreferSolid(mouseHitInWorld)
		if hitPlane then
			cellID = cellPos
		end

		targetCFrame = CFrame.new(game:GetService("Workspace").Terrain:CellCenterToWorld(cellID.x, cellID.y, cellID.z))
	end

	local mouseHitInTarget = targetCFrame:pointToObjectSpace(mouseHitInWorld)
	local targetVectorInWorld = Vector3.new(0,0,0)
	if Mouse then
		-- DON'T WANT THIS IN TERMS OF THE MODEL CFRAME!  (.TargetSurface is in terms of the part CFrame, so this would break, right?  [HotThoth])
		--   (ideally, we would want to make the Mouse.TargetSurface a model-targetsurface instead, but for testing will be using the converse)
		--targetVectorInWorld = targetCFrame:vectorToWorldSpace(Vector3.FromNormalId(Mouse.TargetSurface))
		targetVectorInWorld = targetPart.CFrame:vectorToWorldSpace(Vector3.FromNormalId(Mouse.TargetSurface))   -- better, but model cframe would be best
		--[[if targetPart.Parent:IsA("Model") then
			local hitFace = modelTargetSurface(targetPart.Parent, Mouse.Hit.p, game.Workspace.CurrentCamera.CoordinateFrame.p)  -- best, if you get it right
			local WORLD_AXES = {Vector3.new(1, 0, 0), Vector3.new(0, 1, 0), Vector3.new(0, 0, 1)}
			if hitFace > 0 then
				targetVectorInWorld = targetCFrame:vectorToWorldSpace(WORLD_AXES[hitFace])
			elseif hitFace < 0 then
				targetVectorInWorld = targetCFrame:vectorToWorldSpace(-WORLD_AXES[-hitFace])
			end
		end]]
	end

	local targetRefPointInTarget
	local clampToSurface
	local insertRefPointInInsert

	if getClosestAlignedWorldDirection(targetVectorInWorld) == 0 then
		targetRefPointInTarget = targetCFrame:vectorToObjectSpace(Vector3.new(1, -1, 1))
		insertRefPointInInsert = insertCFrame:vectorToObjectSpace(Vector3.new(-1, -1, 1))
		clampToSurface = Vector3.new(0,1,1)
	elseif getClosestAlignedWorldDirection(targetVectorInWorld) == 3 then
		targetRefPointInTarget = targetCFrame:vectorToObjectSpace(Vector3.new(-1, -1, -1))
		insertRefPointInInsert = insertCFrame:vectorToObjectSpace(Vector3.new(1, -1, -1))
		clampToSurface = Vector3.new(0,1,1)
	elseif getClosestAlignedWorldDirection(targetVectorInWorld) == 1 then
		targetRefPointInTarget = targetCFrame:vectorToObjectSpace(Vector3.new(-1, 1, 1))
		insertRefPointInInsert = insertCFrame:vectorToObjectSpace(Vector3.new(-1, -1, 1))
		clampToSurface = Vector3.new(1,0,1)
	elseif getClosestAlignedWorldDirection(targetVectorInWorld) == 4 then
		targetRefPointInTarget = targetCFrame:vectorToObjectSpace(Vector3.new(-1, -1, 1))
		insertRefPointInInsert = insertCFrame:vectorToObjectSpace(Vector3.new(-1, 1, 1))
		clampToSurface = Vector3.new(1,0,1)
	elseif getClosestAlignedWorldDirection(targetVectorInWorld) == 2 then
		targetRefPointInTarget = targetCFrame:vectorToObjectSpace(Vector3.new(-1, -1, 1))
		insertRefPointInInsert = insertCFrame:vectorToObjectSpace(Vector3.new(-1, -1, -1))
		clampToSurface = Vector3.new(1,1,0)
	else
		targetRefPointInTarget = targetCFrame:vectorToObjectSpace(Vector3.new(1, -1, -1))
		insertRefPointInInsert = insertCFrame:vectorToObjectSpace(Vector3.new(1, -1, 1))
		clampToSurface = Vector3.new(1,1,0)
	end

	targetRefPointInTarget = targetRefPointInTarget * (0.5 * diagBBTarget) + 0.5 * (maxBBTarget + minBBTarget)
	insertRefPointInInsert = insertRefPointInInsert * (0.5 * diagBB) + 0.5 * (maxBB + minBB)

	-- To Do: For cases that are not aligned to the world grid, account for the minimal rotation
	-- needed to bring the Insert part(s) into alignment with the Target Part
	-- Apply the rotation here

	local delta = mouseHitInTarget - targetRefPointInTarget
	local deltaClamped = Vector3.new(grid * math.modf(delta.x/grid), grid * math.modf(delta.y/grid), grid * math.modf(delta.z/grid))
	deltaClamped = deltaClamped * clampToSurface
	local targetTouchInTarget = deltaClamped + targetRefPointInTarget

	local TargetTouchRelToWorld = targetCFrame:pointToWorldSpace(targetTouchInTarget)
	local InsertTouchInWorld = insertCFrame:vectorToWorldSpace(insertRefPointInInsert)
	local posInsertOriginInWorld = TargetTouchRelToWorld - InsertTouchInWorld

	local x, y, z, R00, R01, R02, R10, R11, R12, R20, R21, R22 = insertCFrame:components()
	targetConfig = CFrame.new(posInsertOriginInWorld.x, posInsertOriginInWorld.y, posInsertOriginInWorld.z, R00, R01, R02, R10, R11, R12, R20, R21, R22)
	admissibleConfig = true

	return admissibleConfig, targetConfig, getClosestAlignedWorldDirection(targetVectorInWorld)
end

local function truncateToCircleEighth(bigValue, littleValue)
	local big = math.abs(bigValue)
	local little = math.abs(littleValue)
	local hypotenuse = math.sqrt(big*big + little*little)
	local frac = little / hypotenuse

	local bigSign = 1
	local littleSign = 1
	if bigValue < 0 then bigSign = -1 end
	if littleValue < 0 then littleSign = -1 end

	if frac > .382683432 then
		-- between 22.5 and 45 degrees, so truncate to 45-degree tilt
		return .707106781 * hypotenuse * bigSign, .707106781 * hypotenuse * littleSign
	else
		-- between 0 and 22.5 degrees, so truncate to 0-degree tilt
		return hypotenuse * bigSign, 0
	end
end


local function saveTheWelds(object, manualWeldTable, manualWeldParentTable)
	if object:IsA("ManualWeld") or object:IsA("Rotate") then
		table.insert(manualWeldTable, object)
		table.insert(manualWeldParentTable, object.Parent)
	else
		local children = object:GetChildren()
		for i = 1, #children do
			saveTheWelds(children[i], manualWeldTable, manualWeldParentTable)
		end
	end
end

local function restoreTheWelds(manualWeldTable, manualWeldParentTable)
	for i = 1, #manualWeldTable do
		manualWeldTable[i].Parent = manualWeldParentTable[i]
	end
end

t.CanEditRegion = function(partOrModel, EditRegion) -- todo: use model and stamper metadata
	if not EditRegion then return true, false end

	local minBB, maxBB = getBoundingBoxInWorldCoordinates(partOrModel)

	if minBB.X < EditRegion.CFrame.p.X - EditRegion.Size.X/2 or
		minBB.Y < EditRegion.CFrame.p.Y - EditRegion.Size.Y/2 or
		minBB.Z < EditRegion.CFrame.p.Z - EditRegion.Size.Z/2 then
			return false, false
	end

	if maxBB.X > EditRegion.CFrame.p.X + EditRegion.Size.X/2 or
		maxBB.Y > EditRegion.CFrame.p.Y + EditRegion.Size.Y/2 or
		maxBB.Z > EditRegion.CFrame.p.Z + EditRegion.Size.Z/2 then
			return false, false
	end

	return true, false
end

t.GetStampModel = function(assetId, terrainShape, useAssetVersionId)
	if assetId == 0 then
		return nil, "No Asset"
	end
	if assetId < 0 then
		return nil, "Negative Asset"
	end

	local function UnlockInstances(object)
		if object:IsA("BasePart") then
			object.Locked = false
		end
		for index,child in pairs(object:GetChildren()) do
			UnlockInstances(child)
		end
	end

	local function getClosestColorToTerrainMaterial(terrainValue)
		if terrainValue == 1 then
			return BrickColor.new("Bright green")
		elseif terrainValue == 2 then
			return BrickColor.new("Bright yellow")
		elseif terrainValue == 3 then
			return BrickColor.new("Bright red")
		elseif terrainValue == 4 then
			return BrickColor.new("Sand red")
		elseif terrainValue == 5 then
			return BrickColor.new("Black")
		elseif terrainValue == 6 then
			return BrickColor.new("Dark stone grey")
		elseif terrainValue == 7 then
			return BrickColor.new("Sand blue")
		elseif terrainValue == 8 then
			return BrickColor.new("Deep orange")
		elseif terrainValue == 9 then
			return BrickColor.new("Dark orange")
		elseif terrainValue == 10 then
			return BrickColor.new("Reddish brown")
		elseif terrainValue == 11 then
			return BrickColor.new("Light orange")
		elseif terrainValue == 12 then
			return BrickColor.new("Light stone grey")
		elseif terrainValue == 13 then
			return BrickColor.new("Sand green")
		elseif terrainValue == 14 then
			return BrickColor.new("Medium stone grey")
		elseif terrainValue == 15 then
			return BrickColor.new("Really red")
		elseif terrainValue == 16 then
			return BrickColor.new("Really blue")
		elseif terrainValue == 17 then
			return BrickColor.new("Bright blue")
		else
			return BrickColor.new("Bright green")
		end
	end

	local function setupFakeTerrainPart(cellMat, cellType, cellOrient)
		local newTerrainPiece = nil
		if (cellType == 1 or cellType == 4) then newTerrainPiece = Instance.new("WedgePart")
		elseif (cellType == 2) then newTerrainPiece = Instance.new("CornerWedgePart")
		else newTerrainPiece = Instance.new("Part") end
		newTerrainPiece.Name = "MegaClusterCube"
		newTerrainPiece.Size = Vector3.new(4, 4, 4)
		newTerrainPiece.BottomSurface = "Smooth"
		newTerrainPiece.TopSurface = "Smooth"

		-- can add decals or textures here if feeling particularly adventurous...  for now, can make a table of look-up colors
		newTerrainPiece.BrickColor = getClosestColorToTerrainMaterial(cellMat)

		local sideways = 0
		local flipped = math.pi
		if cellType == 4 then sideways = -math.pi/2 end
		if cellType == 2 or cellType == 3 then flipped = 0 end
		newTerrainPiece.CFrame = CFrame.Angles(0, math.pi/2*cellOrient + flipped, sideways)

		if cellType == 3 then
			local inverseCornerWedgeMesh = Instance.new("SpecialMesh")
			inverseCornerWedgeMesh.MeshType = "FileMesh"
			inverseCornerWedgeMesh.MeshId = "https://www.roblox.com/asset/?id=66832495"
			inverseCornerWedgeMesh.Scale = Vector3.new(2, 2, 2)
			inverseCornerWedgeMesh.Parent = newTerrainPiece
		end

		local materialTag = Instance.new("Vector3Value")
		materialTag.Value = Vector3.new(cellMat, cellType, cellOrient)
		materialTag.Name = "ClusterMaterial"
		materialTag.Parent = newTerrainPiece

		return newTerrainPiece
	end

	-- This call will cause a "wait" until the data comes back
	-- below we wait a max of 8 seconds before deciding to bail out on loading
	local root
	local loader
	loading = true
	if useAssetVersionId then
		loader = coroutine.create(function()
			root = game:GetService("InsertService"):LoadAssetVersion(assetId)
			loading = false
		end)
		coroutine.resume(loader)
	else
		loader = coroutine.create(function()
			root = game:GetService("InsertService"):LoadAsset(assetId)
			loading = false
		end)
		coroutine.resume(loader)
	end

	local lastGameTime = 0
	local totalTime = 0
	local maxWait = 8
	while loading and totalTime < maxWait do
		lastGameTime = tick()
		wait(1)
		totalTime = totalTime + tick() - lastGameTime
	end
	loading = false

	if totalTime >= maxWait then
		return nil, "Load Time Fail"
	end


	if root == nil then
		return nil, "Load Asset Fail"
	end

	if not root:IsA("Model") then
		return nil, "Load Type Fail"
	end

	local instances = root:GetChildren()
	if #instances == 0 then
		return nil, "Empty Model Fail"
	end

	--Unlock all parts that are inserted, to make sure they are editable
	UnlockInstances(root)

	--Continue the insert process
	root = root:GetChildren()[1]

	--Examine the contents and decide what it looks like
	for pos, instance in pairs(instances) do
		if instance:IsA("Team") then
			instance.Parent = game:GetService("Teams")
		elseif instance:IsA("Sky") then
			local lightingService = game:GetService("Lighting")
			for index,child in pairs(lightingService:GetChildren()) do
				if child:IsA("Sky") then
					child:Remove();
				end
			end
			instance.Parent = lightingService
			return
		end
	end

	-- ...and tag all inserted models for subsequent origin identification
	-- if no RobloxModel tag already exists, then add it.
	if root:FindFirstChild("RobloxModel") == nil then
		local stringTag = Instance.new("BoolValue", root)
		stringTag.Name = "RobloxModel"

		if root:FindFirstChild("RobloxStamper") == nil then
			local stringTag2 = Instance.new("BoolValue", root)
			stringTag2.Name = "RobloxStamper"
		end
	end

	if terrainShape then
		if root.Name == "MegaClusterCube" then
			if (terrainShape == 6) then -- insert an autowedging tag
				local autowedgeTag = Instance.new("BoolValue")
				autowedgeTag.Name = "AutoWedge"
				autowedgeTag.Parent = root
			else
				local clusterTag = root:FindFirstChild("ClusterMaterial")
				if clusterTag then
					if clusterTag:IsA("Vector3Value") then
						root = setupFakeTerrainPart(clusterTag.Value.X, terrainShape, clusterTag.Value.Z)
					else
						root = setupFakeTerrainPart(clusterTag.Value, terrainShape, 0)
					end
				else
					root = setupFakeTerrainPart(1, terrainShape, 0)
				end
			end
		end
	end

	return root
end



t.SetupStamperDragger = function(modelToStamp, Mouse, StampInModel, AllowedStampRegion, StampFailedFunc)
	if not modelToStamp then
		error("SetupStamperDragger: modelToStamp (first arg) is nil!  Should be a stamper model")
		return nil
	end
	if not modelToStamp:IsA("Model") and not modelToStamp:IsA("BasePart") then
		error("SetupStamperDragger: modelToStamp (first arg) is neither a Model or Part!")
		return nil
	end
	if not Mouse then
		error("SetupStamperDragger: Mouse (second arg) is nil!  Should be a mouse object")
		return nil
	end
	if not Mouse:IsA("Mouse") then
		error("SetupStamperDragger: Mouse (second arg) is not of type Mouse!")
		return nil
	end

	local stampInModel = nil
	local allowedStampRegion = nil
	local stampFailedFunc = nil
	if StampInModel then
		if not StampInModel:IsA("Model") then
			error("SetupStamperDragger: StampInModel (optional third arg) is not of type 'Model'")
			return nil
		end
		if not AllowedStampRegion then
			error("SetupStamperDragger: AllowedStampRegion (optional fourth arg) is nil when StampInModel (optional third arg) is defined")
			return nil
		end
		stampFailedFunc = StampFailedFunc
		stampInModel = StampInModel
		allowedStampRegion = AllowedStampRegion
	end

	-- Init all state variables
	local gInitial90DegreeRotations = 0
	local stampData = nil
	local mouseTarget = nil

	local errorBox = Instance.new("SelectionBox")
	errorBox.Color = BrickColor.new("Bright red")
	errorBox.Transparency = 0
	errorBox.Archivable = false

	-- for megacluster MEGA STAMPING
	local adornPart = Instance.new("Part")
	adornPart.Parent = nil
	adornPart.Size = Vector3.new(4, 4, 4)
	adornPart.CFrame = CFrame.new()
	adornPart.Archivable = false

	local adorn = Instance.new("SelectionBox")
	adorn.Color = BrickColor.new("Toothpaste")
	adorn.Adornee = adornPart
	adorn.Visible = true
	adorn.Transparency = 0
	adorn.Name = "HighScalabilityStamperLine"
	adorn.Archivable = false

	local HighScalabilityLine = {}
	HighScalabilityLine.Start = nil
	HighScalabilityLine.End = nil
	HighScalabilityLine.Adorn = adorn
	HighScalabilityLine.AdornPart = adornPart
	HighScalabilityLine.InternalLine = nil
	HighScalabilityLine.NewHint = true

	HighScalabilityLine.MorePoints = {nil, nil}
	HighScalabilityLine.MoreLines = {nil, nil}
	HighScalabilityLine.Dimensions = 1

	local control = {}
	local movingLock = false
	local stampUpLock = false
	local unstampableSurface = false
	local mouseCons = {}
	local keyCon = nil

	local stamped = Instance.new("BoolValue")
	stamped.Archivable = false
	stamped.Value = false

	local lastTarget = {}
	lastTarget.TerrainOrientation = 0
	lastTarget.CFrame = 0

	local cellInfo = {}
	cellInfo.Material = 1
	cellInfo.clusterType = 0
	cellInfo.clusterOrientation = 0

	local function isMegaClusterPart()
		if not stampData then return false end
		if not stampData.CurrentParts then return false end

		return ( stampData.CurrentParts:FindFirstChild("ClusterMaterial",true) or (stampData.CurrentParts.Name == "MegaClusterCube") )
	end

	local function DoHighScalabilityRegionSelect()
		local megaCube = stampData.CurrentParts:FindFirstChild("MegaClusterCube")
		if not megaCube then
			if not stampData.CurrentParts.Name == "MegaClusterCube" then
				return
			else
				megaCube = stampData.CurrentParts
			end
		end

		HighScalabilityLine.End = megaCube.CFrame.p
		local line = nil
		local line2 = Vector3.new(0, 0, 0)
		local line3 = Vector3.new(0, 0, 0)

		if HighScalabilityLine.Dimensions == 1 then
			-- extract the line from these positions and limit to a 2D plane made from 2 of the world axes
			--   then use dominating axis to limit line to be at 45-degree intervals
			--   will use this internal representation of the line for the actual stamping
			line = (HighScalabilityLine.End - HighScalabilityLine.Start)

			if math.abs(line.X) < math.abs(line.Y) then
				if math.abs(line.X) < math.abs(line.Z) then
					-- limit to Y/Z plane, domination unknown
					local newY, newZ
					if (math.abs(line.Y) > math.abs(line.Z)) then
						newY, newZ = truncateToCircleEighth(line.Y, line.Z)
					else
						newZ, newY = truncateToCircleEighth(line.Z, line.Y)
					end
					line = Vector3.new(0, newY, newZ)
				else
					-- limit to X/Y plane, with Y dominating
					local newY, newX = truncateToCircleEighth(line.Y, line.X)
					line = Vector3.new(newX, newY, 0)
				end
			else
				if math.abs(line.Y) < math.abs(line.Z) then
					-- limit to X/Z plane, domination unknown
					local newX, newZ
					if math.abs(line.X) > math.abs(line.Z) then
						newX, newZ = truncateToCircleEighth(line.X, line.Z)
					else
						newZ, newX = truncateToCircleEighth(line.Z, line.X)
					end
					line = Vector3.new(newX, 0, newZ)
				else
					-- limit to X/Y plane, with X dominating
					local newX, newY = truncateToCircleEighth(line.X, line.Y)
					line = Vector3.new(newX, newY, 0)
				end
			end
			HighScalabilityLine.InternalLine = line

		elseif HighScalabilityLine.Dimensions == 2 then
			line = HighScalabilityLine.MoreLines[1]
			line2 = HighScalabilityLine.End - HighScalabilityLine.MorePoints[1]

			-- take out any component of line2 along line1, so you get perpendicular to line1 component
			line2 = line2 - line.unit*line.unit:Dot(line2)

			local tempCFrame = CFrame.new(HighScalabilityLine.Start, HighScalabilityLine.Start + line)

			-- then zero out whichever is the smaller component
			local yAxis = tempCFrame:vectorToWorldSpace(Vector3.new(0, 1, 0))
			local xAxis = tempCFrame:vectorToWorldSpace(Vector3.new(1, 0, 0))

			local xComp = xAxis:Dot(line2)
			local yComp = yAxis:Dot(line2)

			if math.abs(yComp) > math.abs(xComp) then
				line2 = line2 - xAxis * xComp
			else
				line2 = line2 - yAxis * yComp
			end

			HighScalabilityLine.InternalLine = line2

		elseif HighScalabilityLine.Dimensions == 3 then
			line  = HighScalabilityLine.MoreLines[1]
			line2 = HighScalabilityLine.MoreLines[2]
			line3 = HighScalabilityLine.End - HighScalabilityLine.MorePoints[2]

			-- zero out all components of previous lines
			line3 = line3 - line.unit * line.unit:Dot(line3)
			line3 = line3 - line2.unit * line2.unit:Dot(line3)

			HighScalabilityLine.InternalLine = line3
		end

		-- resize the "line" graphic to be the correct size and orientation
		local tempCFrame = CFrame.new(HighScalabilityLine.Start, HighScalabilityLine.Start + line)

		if HighScalabilityLine.Dimensions == 1 then  -- faster calculation for line
			HighScalabilityLine.AdornPart.Size = Vector3.new(4, 4, line.magnitude + 4)
			HighScalabilityLine.AdornPart.CFrame = tempCFrame + tempCFrame:vectorToWorldSpace(Vector3.new(2, 2, 2) - HighScalabilityLine.AdornPart.Size/2)
		else
			local boxSize = tempCFrame:vectorToObjectSpace(line + line2 + line3)
			HighScalabilityLine.AdornPart.Size = Vector3.new(4, 4, 4) + Vector3.new(math.abs(boxSize.X), math.abs(boxSize.Y), math.abs(boxSize.Z))
			HighScalabilityLine.AdornPart.CFrame = tempCFrame + tempCFrame:vectorToWorldSpace(boxSize/2)
		end

		-- make player able to see this ish

		local gui = nil
		if game:GetService("Players")["LocalPlayer"] then
			gui = game:GetService("Players").LocalPlayer:FindFirstChild("PlayerGui")
			if gui and gui:IsA("PlayerGui") then
				if HighScalabilityLine.Dimensions == 1 and line.magnitude > 3 then -- don't show if mouse hasn't moved enough
					HighScalabilityLine.Adorn.Parent = gui
				elseif HighScalabilityLine.Dimensions > 1 then
					HighScalabilityLine.Adorn.Parent = gui
				end
			end
		end

		if gui == nil then -- we are in studio
			gui = game:GetService("CoreGui")
			if HighScalabilityLine.Dimensions == 1 and line.magnitude > 3 then -- don't show if mouse hasn't moved enough
				HighScalabilityLine.Adorn.Parent = gui
			elseif HighScalabilityLine.Dimensions > 1 then
				HighScalabilityLine.Adorn.Parent = gui
			end
		end
	end


	local function DoStamperMouseMove(Mouse)
		if not Mouse then
			error("Error: RbxStamper.DoStamperMouseMove: Mouse is nil")
			return
		end
		if not Mouse:IsA("Mouse") then
			error("Error: RbxStamper.DoStamperMouseMove: Mouse is of type", Mouse.className,"should be of type Mouse")
			return
		end

		-- There wasn't a target (no part or terrain), so check for plane intersection.
		if not Mouse.Target then
			local cellPos = GetTerrainForMouse(Mouse)
			if nil == cellPos then
				return
			end
		end

		if not stampData then
			return
		end

		-- don't move with dragger - will move in one step on mouse down
		-- draw ghost at acceptable positions
		local configFound, targetCFrame, targetSurface = findConfigAtMouseTarget(Mouse, stampData)
		if not configFound then
			error("RbxStamper.DoStamperMouseMove No configFound, returning")
			return
		end

		local numRotations = 0 -- update this according to how many rotations you need to get it to target surface
		if autoAlignToFace(stampData.CurrentParts) and targetSurface ~= 1 and targetSurface ~= 4 then -- pre-rotate the flag or portrait so it's aligned correctly
			if		targetSurface == 3 then numRotations = 0 - gInitial90DegreeRotations + autoAlignToFace(stampData.CurrentParts)
			elseif	targetSurface == 0 then numRotations = 2 - gInitial90DegreeRotations + autoAlignToFace(stampData.CurrentParts)
			elseif	targetSurface == 5 then numRotations = 3 - gInitial90DegreeRotations + autoAlignToFace(stampData.CurrentParts)
			elseif	targetSurface == 2 then numRotations = 1 - gInitial90DegreeRotations + autoAlignToFace(stampData.CurrentParts)
			end
		end

		local ry = math.pi/2
		gInitial90DegreeRotations = gInitial90DegreeRotations + numRotations
		if stampData.CurrentParts:IsA("Model") or stampData.CurrentParts:IsA("Tool") then
			--stampData.CurrentParts:Rotate(0, ry*numRotations, 0)
			modelRotate(stampData.CurrentParts, ry*numRotations)
		else
			stampData.CurrentParts.CFrame = CFrame.fromEulerAnglesXYZ(0, ry*numRotations, 0) * stampData.CurrentParts.CFrame
		end

		-- CODE TO CHECK FOR DRAGGING GHOST PART INTO A COLLIDING STATE
		local minBB, maxBB = getBoundingBoxInWorldCoordinates(stampData.CurrentParts)

		-- need to offset by distance to be dragged
		local currModelCFrame = nil
		if stampData.CurrentParts:IsA("Model") then
			currModelCFrame = stampData.CurrentParts:GetModelCFrame()
		else
			currModelCFrame = stampData.CurrentParts.CFrame
		end

		minBB = minBB + targetCFrame.p - currModelCFrame.p
		maxBB = maxBB + targetCFrame.p - currModelCFrame.p

		-- don't drag into terrain
		if clusterPartsInRegion(minBB + insertBoundingBoxOverlapVector, maxBB - insertBoundingBoxOverlapVector) then
			if lastTarget.CFrame then
				if (stampData.CurrentParts:FindFirstChild("ClusterMaterial", true)) then
					local theClusterMaterial = stampData.CurrentParts:FindFirstChild("ClusterMaterial", true)
					if theClusterMaterial:IsA("Vector3Value") then
						local stampClusterMaterial = stampData.CurrentParts:FindFirstChild("ClusterMaterial", true)
						if stampClusterMaterial then
							stampClusterMaterial = theClusterMaterial
						end
					end
				end
			end
			return
		end

		-- if we are stamping a terrain part, make sure it goes on the grid! Otherwise preview block could be placed off grid, but stamped on grid
		if isMegaClusterPart() then
			local cellToStamp = game:GetService("Workspace").Terrain:WorldToCell(targetCFrame.p)
			local newCFramePosition = game:GetService("Workspace").Terrain:CellCenterToWorld(cellToStamp.X, cellToStamp.Y, cellToStamp.Z)
			local x, y, z, R00, R01, R02, R10, R11, R12, R20, R21, R22 = targetCFrame:components()
			targetCFrame = CFrame.new(newCFramePosition.X,newCFramePosition.Y,newCFramePosition.Z,R00, R01, R02, R10, R11, R12, R20, R21, R22)
		end

		positionPartsAtCFrame3(targetCFrame, stampData.CurrentParts)
		lastTarget.CFrame = targetCFrame  -- successful positioning, so update 'dat cframe
		if stampData.CurrentParts:FindFirstChild("ClusterMaterial", true) then
			local clusterMat = stampData.CurrentParts:FindFirstChild("ClusterMaterial", true)
			if clusterMat:IsA("Vector3Value") then
				lastTarget.TerrainOrientation = clusterMat.Value.Z
			end
		end


		-- auto break joints code
		if Mouse and Mouse.Target and Mouse.Target.Parent then
			local modelInfo = Mouse.Target:FindFirstChild("RobloxModel")
			if not modelInfo then modelInfo = Mouse.Target.Parent:FindFirstChild("RobloxModel") end

			local myModelInfo = stampData.CurrentParts:FindFirstChild("UnstampableFaces")

			--if (modelInfo and modelInfo.Parent:FindFirstChild("UnstampableFaces")) or (modelInfo and myModelInfo) then  -- need better targetSurface calcs
			if (true) then
				local breakingFaces = ""
				local myBreakingFaces = ""
				if modelInfo and modelInfo.Parent:FindFirstChild("UnstampableFaces") then breakingFaces = modelInfo.Parent.UnstampableFaces.Value end
				if myModelInfo then myBreakingFaces = myModelInfo.Value end
				local hitFace = 0

				if modelInfo then hitFace = modelTargetSurface(modelInfo.Parent, game:GetService("Workspace").CurrentCamera.CoordinateFrame.p, Mouse.Hit.p) end

				-- are we stamping TO an unstampable surface?
				for bf in string.gmatch(breakingFaces, "[^,]+") do
					if hitFace == tonumber(bf) then
						-- return before we hit the JointsService code below!
						unstampableSurface = true
						game:GetService("JointsService"):ClearJoinAfterMoveJoints() -- clear the JointsService cache
						return
					end
				end

				-- now we have to cast the ray back in the other direction to find the surface we're stamping FROM
				hitFace = modelTargetSurface(stampData.CurrentParts, Mouse.Hit.p, game:GetService("Workspace").CurrentCamera.CoordinateFrame.p)

				-- are we stamping WITH an unstampable surface?
				for bf in string.gmatch(myBreakingFaces, "[^,]+") do
					if hitFace == tonumber(bf) then
						unstampableSurface = true
						game:GetService("JointsService"):ClearJoinAfterMoveJoints() -- clear the JointsService cache
						return
					end
				end

				-- just need to match breakingFace against targetSurface using rotation supplied by modelCFrame
				-- targetSurface: 1 is top, 4 is bottom,
			end
		end

		-- to show joints during the mouse move
		unstampableSurface = false
		game:GetService("JointsService"):SetJoinAfterMoveInstance(stampData.CurrentParts)

		-- most common mouse inactive error occurs here, so check mouse active one more time in a pcall
		if not pcall(function()
				if Mouse and Mouse.Target and Mouse.Target.Parent:FindFirstChild("RobloxModel") == nil then
					return
				else
					return
				end
			end)
		then
			error("Error: RbxStamper.DoStamperMouseMove Mouse is nil on second check")
			game:GetService("JointsService"):ClearJoinAfterMoveJoints()
			Mouse = nil
			return
		end

		if Mouse and Mouse.Target and Mouse.Target.Parent:FindFirstChild("RobloxModel") == nil then
			game:GetService("JointsService"):SetJoinAfterMoveTarget(Mouse.Target)
		else
			game:GetService("JointsService"):SetJoinAfterMoveTarget(nil)
		end
		game:GetService("JointsService"):ShowPermissibleJoints()

		-- here we allow for a line of high-scalability parts
		if isMegaClusterPart() and HighScalabilityLine and HighScalabilityLine.Start then
				DoHighScalabilityRegionSelect()
		end
	end

	local function setupKeyListener(key, Mouse)
		if control and control["Paused"] then return end -- don't do this if we have no stamp

		key = string.lower(key)
		if key == 'r' and not autoAlignToFace(stampData.CurrentParts) then -- rotate the model
			gInitial90DegreeRotations = gInitial90DegreeRotations + 1

			-- Update orientation value if this is a fake terrain part
			local clusterValues = stampData.CurrentParts:FindFirstChild("ClusterMaterial", true)
			if clusterValues and clusterValues:IsA("Vector3Value") then
				clusterValues.Value = Vector3.new(clusterValues.Value.X, clusterValues.Value.Y, (clusterValues.Value.Z + 1) % 4)
			end

			-- Rotate the parts or all the parts in the model
			local ry = math.pi/2
			if stampData.CurrentParts:IsA("Model") or stampData.CurrentParts:IsA("Tool") then
				--stampData.CurrentParts:Rotate(0, ry, 0)
				modelRotate(stampData.CurrentParts, ry)
			else
				stampData.CurrentParts.CFrame = CFrame.fromEulerAnglesXYZ(0, ry, 0) * stampData.CurrentParts.CFrame
			end

			-- After rotating, update the position
			configFound, targetCFrame = findConfigAtMouseTarget(Mouse, stampData)
			if configFound then
				positionPartsAtCFrame3(targetCFrame, stampData.CurrentParts)

				-- update everything else in MouseMove
				DoStamperMouseMove(Mouse)
			end
		elseif key == 'c' then -- try to expand our high scalability dragger dimension
			if HighScalabilityLine.InternalLine and HighScalabilityLine.InternalLine.magnitude > 0 and HighScalabilityLine.Dimensions < 3 then
				HighScalabilityLine.MorePoints[HighScalabilityLine.Dimensions] = HighScalabilityLine.End
				HighScalabilityLine.MoreLines[HighScalabilityLine.Dimensions] = HighScalabilityLine.InternalLine
				HighScalabilityLine.Dimensions = HighScalabilityLine.Dimensions + 1
				HighScalabilityLine.NewHint = true
			end
		end
	end

	keyCon = Mouse.KeyDown:connect(function(key) -- init key connection (keeping code close to func)
		setupKeyListener(key, Mouse)
	end)

	local function resetHighScalabilityLine()
		if HighScalabilityLine then
			HighScalabilityLine.Start = nil
			HighScalabilityLine.End = nil
			HighScalabilityLine.InternalLine = nil
			HighScalabilityLine.NewHint = true
		end
	end

	local function flashRedBox()
		local gui = game:GetService("CoreGui")
		if game:GetService("Players") then
			if game:GetService("Players")["LocalPlayer"] then
				if game:GetService("Players").LocalPlayer:FindFirstChild("PlayerGui") then
					gui = game:GetService("Players").LocalPlayer.PlayerGui
				end
			end
		end
		if not stampData["ErrorBox"] then return end

		stampData.ErrorBox.Parent = gui
		if stampData.CurrentParts:IsA("Tool") then
			stampData.ErrorBox.Adornee = stampData.CurrentParts.Handle
		else
			stampData.ErrorBox.Adornee = stampData.CurrentParts
		end

		delay(0,function()
			for i = 1, 3 do
				if stampData["ErrorBox"] then stampData.ErrorBox.Visible = true end
				wait(0.13)
				if stampData["ErrorBox"] then stampData.ErrorBox.Visible = false end
				wait(0.13)
			end
			if stampData["ErrorBox"] then
				stampData.ErrorBox.Adornee = nil
				stampData.ErrorBox.Parent = nil
			end
		end)
	end

	local function DoStamperMouseDown(Mouse)
		if not Mouse then
			error("Error: RbxStamper.DoStamperMouseDown: Mouse is nil")
			return
		end
		if not Mouse:IsA("Mouse") then
			error("Error: RbxStamper.DoStamperMouseDown: Mouse is of type", Mouse.className,"should be of type Mouse")
			return
		end
		if not stampData then
			return
		end

		if isMegaClusterPart() then
			if Mouse and HighScalabilityLine then
				local megaCube = stampData.CurrentParts:FindFirstChild("MegaClusterCube", true)
				local terrain = game:GetService("Workspace").Terrain
				if megaCube then
					HighScalabilityLine.Dimensions = 1
					local tempCell = terrain:WorldToCell(megaCube.CFrame.p)
					HighScalabilityLine.Start = terrain:CellCenterToWorld(tempCell.X, tempCell.Y, tempCell.Z)
					return
				else
					HighScalabilityLine.Dimensions = 1
					local tempCell = terrain:WorldToCell(stampData.CurrentParts.CFrame.p)
					HighScalabilityLine.Start = terrain:CellCenterToWorld(tempCell.X, tempCell.Y, tempCell.Z)
					return
				end
			end
		end
	end

	local function loadSurfaceTypes(part, surfaces)
		part.TopSurface = surfaces[1]
		part.BottomSurface = surfaces[2]
		part.LeftSurface = surfaces[3]
		part.RightSurface = surfaces[4]
		part.FrontSurface = surfaces[5]
		part.BackSurface = surfaces[6]
	end

	local function saveSurfaceTypes(part, myTable)
		local tempTable = {}
		tempTable[1] = part.TopSurface
		tempTable[2] = part.BottomSurface
		tempTable[3] = part.LeftSurface
		tempTable[4] = part.RightSurface
		tempTable[5] = part.FrontSurface
		tempTable[6] = part.BackSurface

		myTable[part] = tempTable
	end

	local function makeSurfaceUnjoinable(part, surface)
		-- TODO: FILL OUT!
	end

	local function prepareModel(model)
		if not model then return nil end

		local gDesiredTrans = 0.7
		local gStaticTrans = 1

		local clone = model:Clone()
		local scripts = {}
		local parts = {}
		local decals = {}

		stampData = {}
		stampData.DisabledScripts = {}
		stampData.TransparencyTable = {}
		stampData.MaterialTable = {}
		stampData.CanCollideTable = {}
		stampData.AnchoredTable = {}
		stampData.ArchivableTable = {}
		stampData.DecalTransparencyTable = {}
		stampData.SurfaceTypeTable = {}

		collectParts(clone, parts, scripts, decals)

		if #parts <= 0 then return nil, "no parts found in modelToStamp" end

		for index,script in pairs(scripts) do
			if not(script.Disabled) then
				script.Disabled = true
				stampData.DisabledScripts[#stampData.DisabledScripts + 1] = script
			end
		end
		for index, part in pairs(parts) do
			stampData.TransparencyTable[part] = part.Transparency
			part.Transparency = gStaticTrans + (1 - gStaticTrans) * part.Transparency
			stampData.MaterialTable[part] = part.Material
			part.Material = Enum.Material.Plastic
			stampData.CanCollideTable[part] = part.CanCollide
			part.CanCollide = false
			stampData.AnchoredTable[part] = part.Anchored
			part.Anchored = true
			stampData.ArchivableTable[part] = part.Archivable
			part.Archivable = false

			saveSurfaceTypes(part, stampData.SurfaceTypeTable)

			local fadeInDelayTime = 0.5
			local transFadeInTime = 0.5
			delay(0,function()
				wait(fadeInDelayTime) -- give it some time to be completely transparent

				local begTime = tick()
				local currTime = begTime
				while (currTime - begTime) < transFadeInTime and part and part:IsA("BasePart") and part.Transparency > gDesiredTrans do
					local newTrans = 1 - (((currTime - begTime)/transFadeInTime) * (gStaticTrans - gDesiredTrans))
					if stampData["TransparencyTable"] and stampData.TransparencyTable[part] then
						part.Transparency = newTrans + (1 - newTrans) * stampData.TransparencyTable[part]
					end
					wait(0.03)
					currTime = tick()
				end
				if part and part:IsA("BasePart") then
					if stampData["TransparencyTable"] and stampData.TransparencyTable[part] then
						part.Transparency = gDesiredTrans + (1 - gDesiredTrans) * stampData.TransparencyTable[part]
					end
				end
			end)
		end

		for index, decal in pairs(decals) do
			stampData.DecalTransparencyTable[decal] = decal.Transparency
			decal.Transparency = gDesiredTrans + (1 - gDesiredTrans) * decal.Transparency
		end

		-- disable all seats
		setSeatEnabledStatus(clone, true)
		setSeatEnabledStatus(clone, false)

		stampData.CurrentParts = clone

		-- if auto-alignable, we enforce a pre-rotation to the canonical "0-frame"
		if autoAlignToFace(clone) then
			stampData.CurrentParts:ResetOrientationToIdentity()
			gInitial90DegreeRotations = 0
		else -- pre-rotate if necessary
			local ry = gInitial90DegreeRotations * math.pi/2
			if stampData.CurrentParts:IsA("Model") or stampData.CurrentParts:IsA("Tool") then
				--stampData.CurrentParts:Rotate(0, ry, 0)
				modelRotate(stampData.CurrentParts, ry)
			else
				stampData.CurrentParts.CFrame = CFrame.fromEulerAnglesXYZ(0, ry, 0) * stampData.CurrentParts.CFrame
			end
		end

		-- since we're cloning the old model instead of the new one, we will need to update the orientation based on the original value AND how many more
		--  rotations we expect since then [either that or we need to store the just-stamped clusterMaterial.Value.Z somewhere].  This should fix the terrain rotation
		--  issue (fingers crossed) [HotThoth]

		local clusterMaterial = stampData.CurrentParts:FindFirstChild("ClusterMaterial", true)
		if clusterMaterial and clusterMaterial:IsA("Vector3Value") then
			clusterMaterial.Value = Vector3.new(clusterMaterial.Value.X, clusterMaterial.Value.Y, (clusterMaterial.Value.Z + gInitial90DegreeRotations) % 4)
		end

		-- After rotating, update the position
		local configFound, targetCFrame = findConfigAtMouseTarget(Mouse, stampData)
		if configFound then
			stampData.CurrentParts = positionPartsAtCFrame3(targetCFrame, stampData.CurrentParts)
		end

		-- to show joints during the mouse move
		game:GetService("JointsService"):SetJoinAfterMoveInstance(stampData.CurrentParts)

		return clone, parts
	end

	local function checkTerrainBlockCollisions(cellPos, checkHighScalabilityStamp)
		local cellCenterToWorld = game:GetService("Workspace").Terrain.CellCenterToWorld
		local cellCenter = cellCenterToWorld(game:GetService("Workspace").Terrain, cellPos.X, cellPos.Y, cellPos.Z)
		local cellBlockingParts = game:GetService("Workspace"):FindPartsInRegion3(Region3.new(cellCenter - Vector3.new(2, 2, 2) + insertBoundingBoxOverlapVector, cellCenter + Vector3.new(2, 2, 2) - insertBoundingBoxOverlapVector), stampData.CurrentParts,	100)

		local skipThisCell = false

		for b = 1, #cellBlockingParts do
			if isBlocker(cellBlockingParts[b]) then skipThisCell = true break end
		end

		if not skipThisCell then
			-- pop players up above any set cells
			local alreadyPushedUp = {}
			-- if no blocking model below, then see if stamping on top of a character
			for b = 1, #cellBlockingParts do
				if	cellBlockingParts[b].Parent and
					not alreadyPushedUp[cellBlockingParts[b].Parent] and
					cellBlockingParts[b].Parent:FindFirstChild("Humanoid") and
					cellBlockingParts[b].Parent:FindFirstChild("Humanoid"):IsA("Humanoid") then
				-----------------------------------------------------------------------------------
						local blockingPersonTorso = cellBlockingParts[b].Parent:FindFirstChild("Torso")
						alreadyPushedUp[cellBlockingParts[b].Parent] = true

						if blockingPersonTorso then
							-- if so, let's push the person upwards so they pop on top of the stamped model/part (but only if there's space above them)
							local newY = cellCenter.Y + 5
							if spaceAboveCharacter(blockingPersonTorso, newY, stampData) then
								blockingPersonTorso.CFrame = blockingPersonTorso.CFrame + Vector3.new(0, newY - blockingPersonTorso.CFrame.p.Y, 0)
							else
								-- if no space, we just skip this one
								skipThisCell = true
								break
							end
						end
				-----------------------------------------------------------------------------------
				end
			end
		end

		if not skipThisCell then  -- if we STILL aren't skipping...  then we're good to go!
			local canSetCell = true

			if checkHighScalabilityStamp then -- check to see if cell is in region, if not we'll skip set
				if allowedStampRegion then
					local cellPos = cellCenterToWorld(game:GetService("Workspace").Terrain, cellPos.X, cellPos.Y, cellPos.Z)
					if cellPos.X + 2 > allowedStampRegion.CFrame.p.X + allowedStampRegion.Size.X/2 then
						canSetCell = false
					elseif cellPos.X - 2 < allowedStampRegion.CFrame.p.X - allowedStampRegion.Size.X/2 then
						canSetCell = false
					elseif cellPos.Y + 2 > allowedStampRegion.CFrame.p.Y + allowedStampRegion.Size.Y/2 then
						canSetCell = false
					elseif cellPos.Y - 2 < allowedStampRegion.CFrame.p.Y - allowedStampRegion.Size.Y/2 then
						canSetCell = false
					elseif cellPos.Z + 2 > allowedStampRegion.CFrame.p.Z + allowedStampRegion.Size.Z/2 then
						canSetCell = false
					elseif cellPos.Z - 2 < allowedStampRegion.CFrame.p.Z - allowedStampRegion.Size.Z/2 then
						canSetCell = false
					end
				end
			end

			return canSetCell
		end
		return false
	end


	local function ResolveMegaClusterStamp(checkHighScalabilityStamp)
		local cellSet = false

		local cluser = game:GetService("Workspace").Terrain

		local line = HighScalabilityLine.InternalLine
		local cMax = game:GetService("Workspace").Terrain.MaxExtents.Max
		local cMin = game:GetService("Workspace").Terrain.MaxExtents.Min

		local clusterMaterial = 1 -- default is grass
		local clusterType = 0 -- default is brick
		local clusterOrientation = 0 -- default is 0 rotation

		local autoWedgeClusterParts = false
		if stampData.CurrentParts:FindFirstChild("AutoWedge") then autoWedgeClusterParts = true end

		if stampData.CurrentParts:FindFirstChild("ClusterMaterial", true) then
			clusterMaterial = stampData.CurrentParts:FindFirstChild("ClusterMaterial", true)
			if clusterMaterial:IsA("Vector3Value") then
				clusterType = clusterMaterial.Value.Y
				clusterOrientation = clusterMaterial.Value.Z
				clusterMaterial = clusterMaterial.Value.X
			elseif clusterMaterial:IsA("IntValue") then
				clusterMaterial = clusterMaterial.Value
			end
		end

		if HighScalabilityLine.Adorn.Parent and HighScalabilityLine.Start and ((HighScalabilityLine.Dimensions > 1) or (line and line.magnitude > 0)) then
			local startCell = game:GetService("Workspace").Terrain:WorldToCell(HighScalabilityLine.Start)
			local xInc = {0,0,0}
			local yInc = {0,0,0}
			local zInc = {0,0,0}

			local cluster = game:GetService("Workspace").Terrain

			local incrementVect = {nil, nil, nil}
			local stepVect = {Vector3.new(0, 0, 0), Vector3.new(0, 0, 0), Vector3.new(0, 0, 0)}

			local worldAxes = {Vector3.new(1, 0, 0), Vector3.new(0, 1, 0), Vector3.new(0, 0, 1)}

			local lines = {}
			if HighScalabilityLine.Dimensions > 1 then table.insert(lines, HighScalabilityLine.MoreLines[1]) end
			if line and line.magnitude > 0 then table.insert(lines, line) end
			if HighScalabilityLine.Dimensions > 2 then table.insert(lines, HighScalabilityLine.MoreLines[2]) end

			for i = 1, #lines do
				lines[i] = Vector3.new(math.floor(lines[i].X+.5), math.floor(lines[i].Y+.5), math.floor(lines[i].Z+.5)) -- round to integers

				if lines[i].X > 0 then xInc[i] = 1 elseif lines[i].X < 0 then xInc[i] = -1 end
				if lines[i].Y > 0 then yInc[i] = 1 elseif lines[i].Y < 0 then yInc[i] = -1 end
				if lines[i].Z > 0 then zInc[i] = 1 elseif lines[i].Z < 0 then zInc[i] = -1 end

				incrementVect[i] = Vector3.new(xInc[i], yInc[i], zInc[i])
				if incrementVect[i].magnitude < .9 then incrementVect[i] = nil end
			end


			if not lines[2] then lines[2] = Vector3.new(0, 0, 0) end
			if not lines[3] then lines[3] = Vector3.new(0, 0, 0) end

			local waterForceTag = stampData.CurrentParts:FindFirstChild("WaterForceTag", true)
			local waterForceDirectionTag = stampData.CurrentParts:FindFirstChild("WaterForceDirectionTag", true)

			while (stepVect[3].magnitude*4 <= lines[3].magnitude) do
				local outerStepVectIndex = 1
				while outerStepVectIndex < 4 do
					stepVect[2] = Vector3.new(0, 0, 0)
					while (stepVect[2].magnitude*4 <= lines[2].magnitude) do
						local innerStepVectIndex = 1
						while innerStepVectIndex < 4 do
							stepVect[1] = Vector3.new(0, 0, 0)
							while (stepVect[1].magnitude*4 <= lines[1].magnitude) do
								local stepVectSum = stepVect[1] + stepVect[2] + stepVect[3]
								local cellPos = Vector3int16.new(startCell.X + stepVectSum.X, startCell.Y + stepVectSum.Y, startCell.Z + stepVectSum.Z)
								if cellPos.X >= cMin.X and cellPos.Y >= cMin.Y and cellPos.Z >= cMin.Z and cellPos.X < cMax.X and cellPos.Y < cMax.Y and cellPos.Z < cMax.Z then
									-- check if overlaps player or part
									local okToStampTerrainBlock = checkTerrainBlockCollisions(cellPos, checkHighScalabilityStamp)

									if okToStampTerrainBlock then
										if waterForceTag then
											cluster:SetWaterCell(cellPos.X, cellPos.Y, cellPos.Z, Enum.WaterForce[waterForceTag.Value], Enum.WaterDirection[waterForceDirectionTag.Value])
										else
											cluster:SetCell(cellPos.X, cellPos.Y, cellPos.Z, clusterMaterial, clusterType, clusterOrientation)
										end
										cellSet = true

										-- auto-wedge it?
										if (autoWedgeClusterParts) then
											game:GetService("Workspace").Terrain:AutowedgeCells(Region3int16.new(Vector3int16.new(cellPos.x - 1, cellPos.y - 1, cellPos.z - 1),
												Vector3int16.new(cellPos.x + 1, cellPos.y + 1, cellPos.z + 1)))
										end
									end
								end
								stepVect[1] = stepVect[1] + incrementVect[1]
							end
							if incrementVect[2] then
								while innerStepVectIndex < 4 and worldAxes[innerStepVectIndex]:Dot(incrementVect[2]) == 0 do
									innerStepVectIndex = innerStepVectIndex + 1
								end
								if innerStepVectIndex < 4 then
									stepVect[2] = stepVect[2] + worldAxes[innerStepVectIndex] * worldAxes[innerStepVectIndex]:Dot(incrementVect[2])
								end
								innerStepVectIndex = innerStepVectIndex + 1
							else
								stepVect[2] = Vector3.new(1, 0, 0)
								innerStepVectIndex = 4 -- skip all remaining loops
							end
							if (stepVect[2].magnitude*4 > lines[2].magnitude) then innerStepVectIndex = 4 end
						end
					end
					if incrementVect[3] then
						while outerStepVectIndex < 4 and worldAxes[outerStepVectIndex]:Dot(incrementVect[3]) == 0 do
							outerStepVectIndex = outerStepVectIndex + 1
						end
						if outerStepVectIndex < 4 then
							stepVect[3] = stepVect[3] + worldAxes[outerStepVectIndex] * worldAxes[outerStepVectIndex]:Dot(incrementVect[3])
						end
						outerStepVectIndex = outerStepVectIndex + 1
					else -- skip all remaining loops
						stepVect[3] = Vector3.new(1, 0, 0) outerStepVectIndex = 4
					end
					if (stepVect[3].magnitude*4 > lines[3].magnitude) then outerStepVectIndex = 4 end
				end
			end
		end

		-- and also get rid of any HighScalabilityLine stuff if it's there
		HighScalabilityLine.Start = nil
		HighScalabilityLine.Adorn.Parent = nil

		-- Mark for undo.
		if cellSet then
			stampData.CurrentParts.Parent = nil
			pcall(function() game:GetService("ChangeHistoryService"): SetWaypoint("StamperMulti") end)
		end

		return cellSet
	end

	local function DoStamperMouseUp(Mouse)
		if not Mouse then
			error("Error: RbxStamper.DoStamperMouseUp: Mouse is nil")
			return false
		end
		if not Mouse:IsA("Mouse") then
			error("Error: RbxStamper.DoStamperMouseUp: Mouse is of type", Mouse.className,"should be of type Mouse")
			return false
		end

		if not stampData.Dragger then
			error("Error: RbxStamper.DoStamperMouseUp: stampData.Dragger is nil")
			return false
		end

		if not HighScalabilityLine then
			return false
		end

		local checkHighScalabilityStamp = nil
		if stampInModel then
			local canStamp = nil
			local isHSLPart = isMegaClusterPart()

			if isHSLPart and
				HighScalabilityLine and
				HighScalabilityLine.Start and
				HighScalabilityLine.InternalLine and
				HighScalabilityLine.InternalLine.magnitude > 0 then -- we have an HSL line, test later
					canStamp = true
					checkHighScalabilityStamp = true
			else
				canStamp, checkHighScalabilityStamp = t.CanEditRegion(stampData.CurrentParts, allowedStampRegion)
			end

			if not canStamp then
				if stampFailedFunc then
					stampFailedFunc()
				end
				return false
			end
		end

		-- if unstampable face, then don't let us stamp there!
		if unstampableSurface then
			flashRedBox()
			return false
		end

		-- recheck if we can stamp, as we just moved part
		local canStamp, checkHighScalabilityStamp = t.CanEditRegion(stampData.CurrentParts, allowedStampRegion)
		if not canStamp then
			if stampFailedFunc then
				stampFailedFunc()
			end
			return false
		end

		-- Prevent part from being stamped on top of a player

		local minBB, maxBB = getBoundingBoxInWorldCoordinates(stampData.CurrentParts)

		-- HotThoth's note:  Now that above CurrentParts positioning has been commented out, to be truly correct, we would need to use the
		--                     value of configFound from the previous onStamperMouseMove call which moved the CurrentParts
		--                     Shouldn't this be true when lastTargetCFrame has been set and false otherwise?
		configFound, targetCFrame = findConfigAtMouseTarget(Mouse, stampData)

		if configFound and not HighScalabilityLine.Adorn.Parent then
			if clusterPartsInRegion(minBB + insertBoundingBoxOverlapVector, maxBB - insertBoundingBoxOverlapVector) then
				flashRedBox()
				return false
			end

			local blockingParts = game:GetService("Workspace"):FindPartsInRegion3(Region3.new(minBB + insertBoundingBoxOverlapVector,
																	maxBB - insertBoundingBoxOverlapVector),
																	stampData.CurrentParts,
																	100)


			for b = 1, #blockingParts do
				if isBlocker(blockingParts[b]) then
					flashRedBox()
					return false
				end
			end

			local alreadyPushedUp = {}
				-- if no blocking model below, then see if stamping on top of a character
				for b = 1, #blockingParts do
					if	blockingParts[b].Parent and
						not alreadyPushedUp[blockingParts[b].Parent] and
						blockingParts[b].Parent:FindFirstChild("Humanoid") and
						blockingParts[b].Parent:FindFirstChild("Humanoid"):IsA("Humanoid") then
					---------------------------------------------------------------------------
							local blockingPersonTorso = blockingParts[b].Parent:FindFirstChild("Torso")
							alreadyPushedUp[blockingParts[b].Parent] = true

							if blockingPersonTorso then
								-- if so, let's push the person upwards so they pop on top of the stamped model/part (but only if there's space above them)
								local newY = maxBB.Y + 3
								if spaceAboveCharacter(blockingPersonTorso, newY, stampData) then
									blockingPersonTorso.CFrame = blockingPersonTorso.CFrame + Vector3.new(0, newY - blockingPersonTorso.CFrame.p.Y, 0)
								else
									-- if no space, we just error
									flashRedBox()
									return false
								end
							end
					---------------------------------------------------------------------------
					end
				end

		elseif (not configFound) and not (HighScalabilityLine.Start and HighScalabilityLine.Adorn.Parent) then -- if no config then only stamp if it's a real HSL!
			resetHighScalabilityLine()
			return false
		end

		-- something will be stamped!  so set the "StampedSomething" toggle to true
		if game:GetService("Players")["LocalPlayer"] then
			if game:GetService("Players").LocalPlayer["Character"] then
				local localChar = game:GetService("Players").LocalPlayer.Character
				local stampTracker = localChar:FindFirstChild("StampTracker")
				if stampTracker and not stampTracker.Value then
					stampTracker.Value = true
				end
			end
		end

		-- if we drew a line of mega parts, stamp them out
		if HighScalabilityLine.Start and HighScalabilityLine.Adorn.Parent and isMegaClusterPart() then
			if ResolveMegaClusterStamp(checkHighScalabilityStamp) or checkHighScalabilityStamp then
				-- kill the ghost part
				stampData.CurrentParts.Parent = nil
				return true
			end
		end

		-- not High-Scalability-Line-Based, so behave normally [and get rid of any HSL stuff]
		HighScalabilityLine.Start = nil
		HighScalabilityLine.Adorn.Parent = nil

		local cluster = game:GetService("Workspace").Terrain

		-- if target point is in cluster, just use cluster:SetCell
		if isMegaClusterPart() then
			-- if targetCFrame is inside cluster, just set that cell to 1 and return
			--local cellPos = cluster:WorldToCell(targetCFrame.p)

			local cellPos
			if stampData.CurrentParts:IsA("Model") then cellPos = cluster:WorldToCell(stampData.CurrentParts:GetModelCFrame().p)
			else cellPos = cluster:WorldToCell(stampData.CurrentParts.CFrame.p) end

			local cMax = game:GetService("Workspace").Terrain.MaxExtents.Max
			local cMin = game:GetService("Workspace").Terrain.MaxExtents.Min

			if checkTerrainBlockCollisions(cellPos, false) then

				local clusterValues = stampData.CurrentParts:FindFirstChild("ClusterMaterial", true)
				local waterForceTag = stampData.CurrentParts:FindFirstChild("WaterForceTag", true)
				local waterForceDirectionTag = stampData.CurrentParts:FindFirstChild("WaterForceDirectionTag", true)

				if cellPos.X >= cMin.X and cellPos.Y >= cMin.Y and cellPos.Z >= cMin.Z and cellPos.X < cMax.X and cellPos.Y < cMax.Y and cellPos.Z < cMax.Z then

					if waterForceTag then
						cluster:SetWaterCell(cellPos.X, cellPos.Y, cellPos.Z, Enum.WaterForce[waterForceTag.Value], Enum.WaterDirection[waterForceDirectionTag.Value])
					elseif not clusterValues then
						cluster:SetCell(cellPos.X, cellPos.Y, cellPos.Z, cellInfo.Material, cellInfo.clusterType, gInitial90DegreeRotations % 4)
					elseif clusterValues:IsA("Vector3Value") then
						cluster:SetCell(cellPos.X, cellPos.Y, cellPos.Z, clusterValues.Value.X, clusterValues.Value.Y, clusterValues.Value.Z)
					else
						cluster:SetCell(cellPos.X, cellPos.Y, cellPos.Z, clusterValues.Value, 0, 0)
					end

					local autoWedgeClusterParts = false
					if stampData.CurrentParts:FindFirstChild("AutoWedge") then autoWedgeClusterParts = true end

					-- auto-wedge it
					if (autoWedgeClusterParts) then
						game:GetService("Workspace").Terrain:AutowedgeCells(
							Region3int16.new(
								Vector3int16.new(cellPos.x - 1, cellPos.y - 1, cellPos.z - 1),
								Vector3int16.new(cellPos.x + 1, cellPos.y + 1, cellPos.z + 1)
							)
						)
					end

					-- kill the ghost part
					stampData.CurrentParts.Parent = nil

					-- Mark for undo.  It has to happen here or the selection display will come back also.
					pcall(function() game:GetService("ChangeHistoryService"):SetWaypoint("StamperSingle") end)
					return true
				end
			else
				-- you tried to stamp a HSL-single part where one does not belong!
				flashRedBox()
				return false
			end
		end

		local function getPlayer()
			if game:GetService("Players")["LocalPlayer"] then
				return game:GetService("Players").LocalPlayer
			end
			return nil
		end


		-- Post process: after positioning the part or model, restore transparency, material, anchored and collide states and create joints
		if stampData.CurrentParts:IsA("Model") or stampData.CurrentParts:IsA("Tool") then
			if stampData.CurrentParts:IsA("Model") then
				-- Tyler's magical hack-code for allowing/preserving clones of both Surface and Manual Welds...  just don't ask X<
				local manualWeldTable = {}
				local manualWeldParentTable = {}
				saveTheWelds(stampData.CurrentParts, manualWeldTable, manualWeldParentTable)
				stampData.CurrentParts:BreakJoints()
				stampData.CurrentParts:MakeJoints()
				restoreTheWelds(manualWeldTable, manualWeldParentTable)
			end

			-- if it's a model, we also want to fill in the playerID and playerName tags, if it has those (e.g. for the friend-only door)
			local playerIdTag = stampData.CurrentParts:FindFirstChild("PlayerIdTag")
			local playerNameTag = stampData.CurrentParts:FindFirstChild("PlayerNameTag")
			if playerIdTag ~= nil then
				local tempPlayerValue = getPlayer()
				if tempPlayerValue ~= nil then playerIdTag.Value = tempPlayerValue.UserId end
			end
			if playerNameTag ~= nil then
				if game:GetService("Players")["LocalPlayer"] then
					local tempPlayerValue = game:GetService("Players").LocalPlayer
					if tempPlayerValue ~= nil then playerNameTag.Value = tempPlayerValue.Name end
				end
			end
			-- ...and tag all inserted models for subsequent origin identification
			-- if no RobloxModel tag already exists, then add it.
			if stampData.CurrentParts:FindFirstChild("RobloxModel") == nil then
				local stringTag = Instance.new("BoolValue", stampData.CurrentParts)
				stringTag.Name = "RobloxModel"

				if stampData.CurrentParts:FindFirstChild("RobloxStamper") == nil then
					local stringTag2 = Instance.new("BoolValue", stampData.CurrentParts)
					stringTag2.Name = "RobloxStamper"
				end
			end

		else
			stampData.CurrentParts:BreakJoints()
			if stampData.CurrentParts:FindFirstChild("RobloxStamper") == nil then
				local stringTag2 = Instance.new("BoolValue", stampData.CurrentParts)
				stringTag2.Name = "RobloxStamper"
			end
		end

		-- make sure all the joints are activated before restoring anchor states
		game:GetService("JointsService"):CreateJoinAfterMoveJoints()

		-- Restore the original properties for all parts being stamped
		for part, transparency in pairs(stampData.TransparencyTable) do
			part.Transparency = transparency
		end
		for part, archivable in pairs(stampData.ArchivableTable) do
			part.Archivable = archivable
		end
		for part, material in pairs(stampData.MaterialTable) do
			part.Material = material
		end
		for part, collide in pairs(stampData.CanCollideTable) do
			part.CanCollide = collide
		end
		for part, anchored in pairs(stampData.AnchoredTable) do
			part.Anchored = anchored
		end
		for decal, transparency in pairs(stampData.DecalTransparencyTable) do
			decal.Transparency = transparency
		end

		for part, surfaces in pairs(stampData.SurfaceTypeTable) do
			loadSurfaceTypes(part, surfaces)
		end

		if isMegaClusterPart() then
			stampData.CurrentParts.Transparency = 0
		end

		-- re-enable all seats
		setSeatEnabledStatus(stampData.CurrentParts, true)

		stampData.TransparencyTable = nil
		stampData.ArchivableTable = nil
		stampData.MaterialTable = nil
		stampData.CanCollideTable = nil
		stampData.AnchoredTable = nil
		stampData.SurfaceTypeTable = nil

		-- ...and tag all inserted models for subsequent origin identification
		-- if no RobloxModel tag already exists, then add it.
		if stampData.CurrentParts:FindFirstChild("RobloxModel") == nil then
			local stringTag = Instance.new("BoolValue", stampData.CurrentParts)
			stringTag.Name = "RobloxModel"
		end

		--Re-enable the scripts
		for index,script in pairs(stampData.DisabledScripts) do
			script.Disabled = false
		end

		--Now that they are all marked enabled, reinsert them into the world so they start running
		for index,script in pairs(stampData.DisabledScripts) do
			local oldParent = script.Parent
			script.Parent = nil
			script:Clone().Parent = oldParent
		end

		-- clear out more data
		stampData.DisabledScripts = nil
		stampData.Dragger = nil
		stampData.CurrentParts = nil

		pcall(function() game:GetService("ChangeHistoryService"): SetWaypoint("StampedObject") end)
		return true
	end

	local function pauseStamper()
		for i = 1, #mouseCons do -- stop the mouse from doing anything
			mouseCons[i]:disconnect()
			mouseCons[i] = nil
		end
		mouseCons = {}

		if stampData and stampData.CurrentParts then -- remove our ghost part
			stampData.CurrentParts.Parent = nil
			stampData.CurrentParts:Remove()
		end

		resetHighScalabilityLine()

		game:GetService("JointsService"):ClearJoinAfterMoveJoints()
	end


	local function prepareUnjoinableSurfaces(modelCFrame, parts, whichSurface)
		local AXIS_VECTORS = {Vector3.new(1, 0, 0), Vector3.new(0, 1, 0), Vector3.new(0, 0, 1)}  -- maybe last one is negative?  TODO: check this!
		local isPositive = 1
		if whichSurface < 0 then isPositive = isPositive * -1 whichSurface = whichSurface*-1 end
		local surfaceNormal = isPositive * modelCFrame:vectorToWorldSpace(AXIS_VECTORS[whichSurface])

		for i = 1, #parts do
			local currPart = parts[i]

			-- now just need to find which surface of currPart most closely match surfaceNormal and then set that to Unjoinable
			local surfaceNormalInLocalCoords = currPart.CFrame:vectorToObjectSpace(surfaceNormal)
			if math.abs(surfaceNormalInLocalCoords.X) > math.abs(surfaceNormalInLocalCoords.Y) then
				if math.abs(surfaceNormalInLocalCoords.X) > math.abs(surfaceNormalInLocalCoords.Z) then
					if surfaceNormalInLocalCoords.X > 0 then currPart.RightSurface = "Unjoinable" else currPart.LeftSurface = "Unjoinable" end
				else
					if surfaceNormalInLocalCoords.Z > 0 then currPart.BackSurface = "Unjoinable" else currPart.FrontSurface = "Unjoinable" end
				end
			else
				if math.abs(surfaceNormalInLocalCoords.Y) > math.abs(surfaceNormalInLocalCoords.Z) then
					if surfaceNormalInLocalCoords.Y > 0 then currPart.TopSurface = "Unjoinable" else currPart.BottomSurface = "Unjoinable" end
				else
					if surfaceNormalInLocalCoords.Z > 0 then currPart.BackSurface = "Unjoinable" else currPart.FrontSurface = "Unjoinable" end
				end
			end
		end
	end

	local function resumeStamper()
		local clone, parts = prepareModel(modelToStamp)

		if not clone or not parts then
			return
		end

		-- if we have unjoinable faces, then we want to change those surfaces to be Unjoinable
		local unjoinableTag = clone:FindFirstChild("UnjoinableFaces", true)
		if unjoinableTag then
			for unjoinableSurface in string.gmatch(unjoinableTag.Value, "[^,]*") do
				if tonumber(unjoinableSurface) then
					if clone:IsA("Model") then
						prepareUnjoinableSurfaces(clone:GetModelCFrame(), parts, tonumber(unjoinableSurface))
					else
						prepareUnjoinableSurfaces(clone.CFrame, parts, tonumber(unjoinableSurface))
					end
				end
			end
		end

		stampData.ErrorBox = errorBox
		if stampInModel then
			clone.Parent = stampInModel
		else
			clone.Parent = game:GetService("Workspace")
		end

		if clone:FindFirstChild("ClusterMaterial", true) then -- extract all info from vector
			local clusterMaterial = clone:FindFirstChild("ClusterMaterial", true)
			if (clusterMaterial:IsA("Vector3Value")) then
				cellInfo.Material = clusterMaterial.Value.X
				cellInfo.clusterType = clusterMaterial.Value.Y
				cellInfo.clusterOrientation = clusterMaterial.Value.Z
			elseif clusterMaterial:IsA("IntValue") then
				cellInfo.Material = clusterMaterial.Value
			end
		end

		pcall(function() mouseTarget = Mouse.Target end)

		if mouseTarget and mouseTarget.Parent:FindFirstChild("RobloxModel") == nil then
			game:GetService("JointsService"):SetJoinAfterMoveTarget(mouseTarget)
		else
			game:GetService("JointsService"):SetJoinAfterMoveTarget(nil)
		end
		game:GetService("JointsService"):ShowPermissibleJoints()

		for index, object in pairs(stampData.DisabledScripts) do
			if object.Name == "GhostRemovalScript" then
				object.Parent = stampData.CurrentParts
			end
		end

		stampData.Dragger = Instance.new("Dragger")

		--Begin a movement by faking a MouseDown signal
		stampData.Dragger:MouseDown(parts[1], Vector3.new(0,0,0), parts)
		stampData.Dragger:MouseUp()

		DoStamperMouseMove(Mouse)

		table.insert(mouseCons,Mouse.Move:connect(function()
			if movingLock or stampUpLock then return end
			movingLock = true
				DoStamperMouseMove(Mouse)
			movingLock = false
		end))

		table.insert(mouseCons,Mouse.Button1Down:connect(function()
			DoStamperMouseDown(Mouse)
		end))

		table.insert(mouseCons,Mouse.Button1Up:connect(function()
			stampUpLock = true
				while movingLock do wait() end
				stamped.Value = DoStamperMouseUp(Mouse)
				resetHighScalabilityLine()
			stampUpLock = false
		end))

		stamped.Value = false
	end

	local function resetStamperState(newModelToStamp)

		-- if we have a new model, swap it out
		if newModelToStamp then
			if not newModelToStamp:IsA("Model") and not newModelToStamp:IsA("BasePart") then
				error("resetStamperState: newModelToStamp (first arg) is not nil, but not a model or part!")
			end
			modelToStamp = newModelToStamp
		end

		-- first clear our state
		pauseStamper()
		-- now lets load in the new model
		resumeStamper()

	end

	-- load the model initially
	resetStamperState()


	-- setup the control table we pass back to the user
	control.Stamped = stamped -- BoolValue that fires when user stamps
	control.Paused = false

	control.LoadNewModel = function(newStampModel) -- allows us to specify a new stamper model to be used with this stamper
		if newStampModel and not newStampModel:IsA("Model") and not newStampModel:IsA("BasePart") then
			error("Control.LoadNewModel: newStampModel (first arg) is not a Model or Part!")
			return nil
		end
		resetStamperState(newStampModel)
	end

	control.ReloadModel = function() -- will automatically set stamper to get a new model of current model and start stamping with new model
		resetStamperState()
	end

	control.Pause = function() -- temporarily stops stamping, use resume to start up again
		if not control.Paused then
			pauseStamper()
			control.Paused = true
		else
			print("RbxStamper Warning: Tried to call Control.Pause() when already paused")
		end
	end

	control.Resume = function() -- resumes stamping, if currently paused
		if control.Paused then
			resumeStamper()
			control.Paused = false
		else
			print("RbxStamper Warning: Tried to call Control.Resume() without Pausing First")
		end
	end

	control.ResetRotation = function() -- resets the model rotation so new models are at default orientation
		-- gInitial90DegreeRotations = 0
		-- Note:  This function will not always work quite the way we want it to; we will have to build this out further so it works with
		--        High-Scalability and with the new model orientation setting methods (model:ResetOrientationToIdentity())  [HotThoth]
	end

	control.Destroy = function() -- Stops current Stamp operation and destroys control construct
		for i = 1, #mouseCons do
			mouseCons[i]:disconnect()
			mouseCons[i] = nil
		end

		if keyCon then
			keyCon:disconnect()
		end

		game:GetService("JointsService"):ClearJoinAfterMoveJoints()

		if adorn then adorn:Destroy() end
		if adornPart then adornPart:Destroy() end
		if errorBox then errorBox:Destroy() end
		if stampData then
			if stampData["Dragger"] then
				stampData.Dragger:Destroy()
			end
			if stampData.CurrentParts then
				stampData.CurrentParts:Destroy()
			end
		end
		if control and control["Stamped"] then
			control.Stamped:Destroy()
		end
		control = nil
	end

	return control
end

t.Help =
	function(funcNameOrFunc)
		--input argument can be a string or a function.  Should return a description (of arguments and expected side effects)
		if funcNameOrFunc == "GetStampModel" or funcNameOrFunc == t.GetStampModel then
			return "Function GetStampModel.  Arguments: assetId, useAssetVersionId.  assetId is the asset to load in, define useAssetVersionId as true if assetId is a version id instead of a relative assetId.  Side effect: returns a model of the assetId, or a string with error message if something fails"
		end
		if funcNameOrFunc == "SetupStamperDragger" or funcNameOrFunc == t.SetupStamperDragger then
			return "Function SetupStamperDragger. Side Effect: Creates 4x4 stamping mechanism for building out parts quickly. Arguments: ModelToStamp, Mouse, LegalStampCheckFunction. ModelToStamp should be a Model or Part, preferrably loaded from RbxStamper.GetStampModel and should have extents that are multiples of 4.  Mouse should be a mouse object (obtained from things such as Tool.OnEquipped), used to drag parts around 'stamp' them out. LegalStampCheckFunction is optional, used as a callback with a table argument (table is full of instances about to be stamped). Function should return either true or false, false stopping the stamp action."
		end
	end

return t