local Width = 32.0
local Height = 32.0
local Time = 0

function timeCount()
    Time = Time + 1
    if Time > 200 then
        Time = 0
    end
end

function update()
    timeCount()
    circle()
end

function sdBox(p, b)
  local q = Vector3.__new(math.abs(p.x) - b.x, math.abs(p.y) - b.y)
  local vec = Vector3.__new(math.max(q.x,0.0), math.max(q.y,0.0), math.max(q.z,0.0))
  local c = math.min(math.max(q.x,math.max(q.y,q.z)),0.0)
  vec.x = vec.x + c
  vec.y = vec.y + c
  vec.z = vec.z + c
  return Vector3.Magnitude(vec)
end

function dist(pos)
    local angle = Time / 10.0
    local pos2 =  Vector3.__new(pos.x * math.cos(angle) - pos.y * math.sin(angle), pos.x * math.sin(angle) + pos.y * math.cos(angle));
    return sdBox(pos2, Vector3.__new(0.3, 0.3, 1))
end

function circle()
    local t = ""

    local x, y

    for y = 1, Height do
        for x = 1, Width do

            local p = ""
            local x2 = (x - 0.5) / Width - 0.5 
            local y2 = (y - 0.5) / Height - 0.5
            local color = 0.0

            --グラデーション
            color = dist(Vector3.__new(x2, y2)) * 20.0
            if color < 0.1 then
                p = "＿"
            elseif color < 0.2 then
                p = "～"
            elseif color < 0.3 then
                p = "＝"
            elseif color < 0.4 then
                p = "し"
            elseif color < 0.5 then
                p = "つ"
            elseif color < 0.6 then
                p = "に"
            elseif color < 0.7 then
                p = "け"
            elseif color < 0.8 then
                p = "ぬ"
            elseif color < 0.9 then
                p = "和"
            else
                p = "親"
            end

            t = t..p
        end
        t = t.."\n"
    end
    vci.assets._ALL_SetText("Text", t)
end