Weird GUI Positioning

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#1

Hello!

I have two annoying problems right now… I really don’t know how to solve this…

Note: The code is below and applies to both issues.

First Problem

I have a kind of “cube whiteboard”, where each Frame is a face of a cube that you can paint on. The thing is that I have a problem, and that is that there are certain parts of those faces (frames) that cannot be painted. (You can see the black edges and certain inconsistencies because you cannot paint on those parts for some reason that I don’t know).

Original
image
Full Painted
image

Second Problem

I also have a problem with the size of the Dot while painting (especially when painting near the edges), since by maintaining its size, a part is painted outside the frame.

Dot Size Problem
image

Code

Client 
local lPlr = game.Players.LocalPlayer
local mouse = lPlr:GetMouse()
local uis = game:GetService("UserInputService")
local Flash_DrawScript = game:GetService("ReplicatedStorage"):WaitForChild("Flash_DrawScript")

local isMouseButtonDown = false

local function InputBegan(input)
	local inputType = input.UserInputType
	if inputType == Enum.UserInputType.MouseButton1 then
		isMouseButtonDown = true
	end
end

function InputEnded(input)
	local inputType = input.UserInputType
	if inputType == Enum.UserInputType.MouseButton1 then
		isMouseButtonDown = false
	end
end

for _, frame in ipairs(lPlr.PlayerGui.DrawGui:GetChildren()) do
	if not frame:IsA("Frame") or frame.Name == "Options" then return end
	local function Paint(X, Y)
		if isMouseButtonDown == false then return end
		local gui_X = frame.AbsolutePosition.X
		local gui_Y = frame.AbsolutePosition.Y
		local guiPosition = frame.AbsolutePosition
		local guiSize = frame.AbsoluteSize
		
		local relativePos = UDim2.new((X -guiPosition.X) / guiSize.X, 0, (Y -guiPosition.Y - 36) / guiSize.Y, 0)
		local DotSize = lPlr.PlayerGui.DrawGui.Options.DotSize
		
		if DotSize.Text == "" or DotSize.Text == "0" then end
		if not tonumber(DotSize.Text) then return end
		if tonumber(DotSize.Text) and tonumber(DotSize.Text) <= 0 then return end
		
		Flash_DrawScript:FireServer(frame, relativePos, tonumber(DotSize.Text))
	end
	uis.InputBegan:Connect(InputBegan)
	uis.InputEnded:Connect(InputEnded)
	frame.MouseMoved:Connect(Paint)
end
Server 
local Flash_DrawScript = game:GetService("ReplicatedStorage"):WaitForChild("Flash_DrawScript")

Flash_DrawScript.OnServerEvent:Connect(function(plr, frame, relativePos, dotSize)
	print("Relative position: " .. relativePos.X.Scale .. ", " .. relativePos.Y.Scale)
	local dot = Instance.new("ImageLabel")
	dot.Parent = frame
	dot.Position = UDim2.new(relativePos.X.Scale, 0, relativePos.Y.Scale, 0)
	dot.Name = "Dot"
	dot.ImageColor3 = Color3.fromRGB(0, 0, 0)
	dot.BackgroundTransparency = 1
	dot.Size = UDim2.new(0, dotSize, 0, dotSize)
	dot.Image = "http://www.roblox.com/asset/?id=279918838"
end)
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