# 8 Connectivity Edge detection help plsls :C

So basically this script detects if a pixel is on the edge of a part by comparing the depth and surface normals to surrounding pixels and then maps it onto another grid using two tables as the y and x axis

It comes after a ray casting script that returns the table “Grid” and before a function that places frames

Currently just this part of the script runs for about 0.35 seconds detecting a 209 x 289 area of pixels (using a frame das why weird area)

Any help with optimizing it would be appreciated!

``````local EdgeMap = {} --Table for the next function to read

for i = 1, #Grid do --Reads each row for detected part
local EdgeRows = {}
for iv = 1, #Grid[i] do -- Reads each coloumn

local Detected = false

if Grid[i][iv][1] ~= nil then -- Checking if the point is valid for the scan

-- Variables for the point detected
local Normal = Grid[i][iv][1]
local Depth = Grid[i][iv][2]
local Part = Grid[i][iv][3]

local Count = 0 -- Starts counting nearby cells to check if it's an edge

for uwu = 0, EdgeThickness * 2 + 1, 1 do -- Loops to detect a range of cells around it
for owo = 0, EdgeThickness * 2 + 1, 1 do

if Grid[i+uwu - EdgeThickness] then -- Checking if it's legal
if Grid[i+ uwu - EdgeThickness][iv + owo - EdgeThickness] then -- Age verification
if Grid[i+ uwu - EdgeThickness][iv + owo - EdgeThickness][1] ~= nil then -- Human verification

-- Checks if the furries are not too similar to the current cell's stuff like it's surface normals
if math.deg(math.acos(Normal:Dot(Grid[i+uwu - EdgeThickness][iv + owo - EdgeThickness][1]))) >= 90 or -- see surface normal cool
Grid[i+uwu - EdgeThickness][iv + owo - EdgeThickness][2] - Depth >= 10 -- you're mom
then
Count = Count + 1
elseif Grid[i+uwu - EdgeThickness][iv + owo - EdgeThickness][3] ~= Part and Grid[i+uwu - EdgeThickness][iv + owo - EdgeThickness][2] - Depth >= 5 then -- your*
Count = Count + 2 -- specifically for edges so guarantees a pixel on the edge will get colored
end
end
end
end
end
end
if Count >= 2 then -- If there are enough cells make it valid for shading
Detected = true
end
end
EdgeRows[#EdgeRows+1] = Detected -- Putting in data
end
EdgeMap[#EdgeMap+1] = EdgeRows
end -- Close book arrivederci
``````

uwu

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