local _textureSize = 64

function update()
    drawGraph()
end

function drawGraph()

    local t = ""
    for y = 1, _textureSize do
        for x = 1, _textureSize do
 
            local p = "□"
            -- 正中線
            if (x == _textureSize * 0.5) or (y == _textureSize * 0.5) then
                p = "■"
            end
            -- y = x のグラフ
            --[[
            if x == y then
                p = "■"
            end 
            ]]          
            -- y = 2x のグラフ
            if 2 * x == y + _textureSize * 0.5 then
                p = "■"
            end
            t = t..p
        end
        t = t.."\n"
    end
    vci.assets._ALL_SetText("Text", t)

end