1012

20250117.rb

def size = 400

def shake(base:, width:)
  base + width / 2 - rand(width)
end

foots = 6.times.map { }

def setup
  createCanvas(size, size)

  noStroke
  
  frameRate(1)
  #noLoop
end

def draw
  background("black")
  
  k = lambda { shake(base: size/2, width: size / 8) }
  o = Struct.new(:x, :y, :rect).new(k[], k[], size/5)

  (["green", "magenta", "yellow"] * 2).each do |c|
    b =  Math::PI * rand(360) / 360
    draw_foot(o: o, b: b, color: c)
  end
  
  fill("orange")
  ellipse(o.x, o.y, o.rect)
end

# o is zero point, b is base 
def draw_foot(o:, b:, color:)
  f = make_foot(o: o, b: b)
  #puts f[0]
  f.each do |p|
    fill(color)
    ellipse(p[:x], p[:y], p[:radius])
  end
end

def make_foot(o:, b:)
  rand_base = 5
  foot_r = 8
  dr = foot_r / 3
  db = foot_r / 2
  r = o.rect / 2
  t_base = 100
  t = t_base / 2 + rand(t_base / 2)
  b_direction = 1
  r_direction = 1
  points = []
  t.times do |i|
    points << { x: o.x + r * Math.cos(b), y: o.y + r * Math.sin(b), radius: foot_r }
    if i % 10 == 0 && rand < 0.3
      b_direction *= -1
    end
    if i % 5 == 0 && rand < 0.1
      r_direction *= -1
    end
    r += dr * r_direction
    b += rand(rand_base * 2) * Math::PI / 360 * b_direction
  end
  points
end

def move_foot
  # どうしよう。。
end