import math

class MyTurtle:
  """SVG で描画する簡易タートル"""

  def __init__(self, x=0, y=0, angle=0):
    self.x = x
    self.y = y
    self.angle = angle
    self.pen_down = True

  def line_to(self, x, y):
    if self.pen_down:
      print(f"<line")
      print(f"  x1='{self.x:.2f}' y1='{self.y:.2f}'")
      print(f"  x2='{x:.2f}' y2='{y:.2f}' />")
    else:
      print(f"<!-- Moving to ({x:.2f}, {y:.2f}) -->")

  def forward(self, distance):
    angle_rad = math.radians(self.angle)
    dx = distance * math.cos(angle_rad)
    dy = distance * math.sin(angle_rad)
    x1 = self.x + dx
    y1 = self.y + dy
    self.line_to(x1, y1)
    self.x = x1
    self.y = y1

  def right(self, da):
    self.angle = (self.angle + da) % 360

  def left(self, da):
    self.right(-da)