local ar = peripheral.find("arController")
local resolution = {480,270}
 
local function drawLine(x1,y1,x2,y2,size,color)
    local m = 0
    if x1 ~= x2 then
        m = (y2-y1)/(x2-x1)
    end
    if x1 ~= x2 and math.abs(m) <= 1 then
        local b = y1-(m*x1)
        if x2 < x1 then
            x1,y1,x2,y2 = x2,y2,x1,y1
        end
        for x = x1, x2 do -- Y = mx + b, draw centered pix
            if x < resolution[1] and x > 0 then-- conditional for not drawing off screen
                local y = m*x+b
                if y < resolution[2] and y > 0 then
                    ar.fill(x-(0.5*size),y-(0.5*size),x+(0.5*size),y+(0.5*size),color)
                end
            end
        end    
    else
        if y2 < y1 then
            x1,y1,x2,y2 = x2,y2,x1,y1
        end
        local w = (x2-x1)/(y2-y1)
        local p = x1-(w*y1)
        for y = y1, y2 do -- Y = mx + b, draw centered pix
            if y < resolution[2] and y > 0 then-- conditional for not drawing off screen
                local x = (p-y)/w
                if x < resolution[1] and x > 0 then
                    ar.fill(x-(0.5*size),y-(0.5*size),x+(0.5*size),y+(0.5*size),color)
                end
            end
        end    
    end
end
 
drawLine(0,0,480,270,2,0xF33E3E)
drawLine(0,270,480,0,2,0xA6F33E)
drawLine(50,50,200,50,4,0x8E3EF3)
drawLine(200,50,160,235,6,0xFFF000)