def tscm_color(c):
    """Set the color to C, a symbol such as red or '#ffc0c0' (representing
    hexadecimal red, green, and blue values."""
    _tscm_prep()
    check_type(c, scm_symbolp, 0, "color")
    turtle.color(str(c))
    return UNSPEC

    def show_sharks(self, sharks):
        self.update_cnt += 1
        if UPDATE_EVERY > 0 and self.update_cnt % UPDATE_EVERY != 1:
            return

        turtle.clearstamps()
        draw_cnt = 0
        px = {}
        for shark in sharks:
            draw_cnt += 1
            shark_shape = 'classic' if shark.tracked else 'classic'
            if DRAW_EVERY == 0 or draw_cnt % DRAW_EVERY == 0:
                # Keep track of which positions already have something
                # drawn to speed up display rendering
                scaled_x = int(shark.x * self.one_px)
                scaled_y = int(shark.y * self.one_px)
                scaled_xy = scaled_x * 10000 + scaled_y
                turtle.color(shark.color)
                turtle.shape(shark_shape)
                turtle.resizemode("user")
                turtle.shapesize(1.5,1.5,1)
                if not scaled_xy in px:
                    px[scaled_xy] = 1
                    turtle.setposition(*shark.xy)
                    turtle.setheading(math.degrees(shark.h))
                    turtle.stamp()

 def show_robot(self, robot):
     turtle.color("blue")
     turtle.shape('square')
     turtle.setposition(*robot.xy)
     turtle.setheading(math.degrees(robot.h))
     turtle.stamp()
     turtle.update()

def polygon(side = 50, angle = None, xstart = None, ystart = None, numberSides = 3, color = 'black', fill = False):
    turtle.pensize(3)
    turtle.speed('fastest')
    turtle.hideturtle()
    if angle != None:
        turtle.left(angle)
    
    turtle.penup()
    if fill == True:
        if xstart != None or ystart != None:
            turtle.goto(xstart, ystart)
        else:
            turtle.goto(0, 0)
        turtle.color(color)
        turtle.pendown()
        turtle.begin_fill()
        turtle.circle(side, 360, numberSides)
        turtle.end_fill()
        turtle.penup()
        
    else:
        turtle.goto(xstart, ystart)
        turtle.color(color)
        turtle.pendown()
        turtle.circle(side, 360, numberSides)
        turtle.penup()
    
    return

def draw(cmds, size=2): #output tree
    stack = []
    for cmd in cmds:
        if cmd=='F':
            turtle.forward(size)
        elif cmd=='-':
            t = random.randrange(0,7,1)
            p = ["Red","Green","Blue","Grey","Yellow","Pink","Brown"]
            turtle.color(p[t])
            turtle.left(15) #slope left
        elif cmd=='+':
            turtle.right(15) #slope right
            t = random.randrange(0,7,1) #рандомная пер. для цвета
            p = ["Red","Green","Blue","Grey","Yellow","Pink","Brown"] #ряд цветов
            turtle.color(p[t]) #выбор цвета из ряда
        elif cmd=='X':
            pass
        elif cmd=='[':
            stack.append((turtle.position(), turtle.heading()))
        elif cmd==']':
            position, heading = stack.pop()
            turtle.penup()
            turtle.setposition(position)
            turtle.setheading(heading)  
            turtle.pendown()
    turtle.update()

def theStem(stemLength=100):
	turtle.home()
	turtle.forward(25)
	turtle.left(90)
	turtle.pensize(4)
	turtle.color("green")
	turtle.forward(stemLength)

def drawLine(x1, y1, x2, y2, color = "black", size = 1):
    turtle.color(color)
    turtle.pensize(size)
    turtle.penup()
    turtle.goto(x1, y1)
    turtle.pendown()
    turtle.goto(x2, y2)

def plano2d():
  turtle.penup()

  for i in range(13):
    y = 264 - (44 *i)
    turtle.penup()
    turtle.setposition(-264,y)
    turtle.pendown()
    turtle.forward(528)
  
  turtle.right(90)

  for i in range(13):
    x = -264 + (44*i)
    turtle.penup()
    turtle.setposition(x,264)
    turtle.pendown()
    turtle.forward(528)
  
  turtle.penup()
  turtle.home()
  turtle.pendown()
  turtle.color("blue")         
  turtle.pensize(3)

  for i in range(4):
    grados = 90 * (i+1)
    turtle.home()
    turtle.left(grados)
    turtle.forward(264) 

def drawmountain(x,y,color):
	t.up
	t.goto(x,y)
	t.down
	t.color(color)
	t.begin_fill()
	t.backward(200)
	t.right(120)
	t.backward(200)
	t.right(120)
	t.backward(200)
	t.right(120)
	t.end_fill()
	t.up

	t.goto(x-75,y+125)
	t.down
	t.color("White")
	t.begin_fill()
	t.backward(50)
	t.right(120)
	t.backward(50)
	t.right(120)
	t.backward(50)
	t.right(120)
	t.end_fill()
	t.up

def curva(simbolos,identificador,linea):
  p1= obtener_punto(1,identificador,simbolos)
  p2= obtener_punto(2,identificador,simbolos)
  
  x1 = int (obtener_x(p1,simbolos))
  y1 = int (obtener_y(p1,simbolos))
  x2 = obtener_x(p2,simbolos)
  y2 = obtener_y(p2,simbolos)  

  rotar = obtener_rotar(identificador, simbolos,linea)
  escalar = obtener_escalar(identificador, simbolos,linea)
  relleno = obtener_color(obtener_relleno(identificador,simbolos,linea))  
  turtle.color(relleno)

  tx = obtener_tx(identificador, simbolos,linea)
  ty = obtener_ty(identificador, simbolos,linea)
  potencia = obtener_potencia(identificador,simbolos)
  
  #Trasladar recta
  x1 = int(x1*44 + tx*44)
  x2 = int(x2*44 + tx*44)
  y1 = y1*44 + ty*44
  y2 = y2*44 + ty*44  
  turtle.penup()
  for x in range(x1,x2):
  	turtle.goto(x+(44), (x+(44))**potencia)
  	turtle.pendown()

def circunferencia(simbolos,identificador,linea):
  p1= obtener_punto(2,identificador,simbolos)
  radio = obtener_radio(identificador,simbolos)
  x1 = obtener_x(p1,simbolos)
  y1 = obtener_y(p1,simbolos)
 
  escalar = obtener_escalar(identificador, simbolos,linea)
  relleno = obtener_color(obtener_relleno(identificador,simbolos,linea))
  borde = obtener_color(obtener_borde(identificador,simbolos,linea))  
  turtle.color(borde)
  if escalar == 0:
    escalar=1
  tx = obtener_tx(identificador, simbolos,linea)
  ty = obtener_ty(identificador, simbolos,linea)
  turtle.pensize(8)
  turtle.penup()

  
  #Trasladar circunferencia
  x1 = x1 + tx
  y1 = y1 + ty

  #turtle.setposition(x1, y1-(radio*44))
  #turtle.pendown()
  #turtle.circle(radio*44)

  #Escalar circunferencia
  turtle.penup()
  #turtle.setposition(x1, y1-(radio*44*escalar))
  turtle.setposition(x1*44, (y1*44)-(radio*44*escalar))
  turtle.pendown()
  turtle.fillcolor(relleno)
  turtle.begin_fill()
  turtle.circle(radio*44*escalar)
  turtle.end_fill()

def draw_coordinate_systen(screen_dimension,function, input_range):
    """
    Draws Coordinate System on screen 
    @param screen_dimension 
    """
    turtle.penup()
    turtle.goto(0,screen_dimension[1])
    turtle.pendown()
    turtle.goto(0,-screen_dimension[1])
    turtle.penup()
    turtle.goto(-screen_dimension[1],0)
    turtle.pendown()
    turtle.goto(screen_dimension[1],0)
    turtle.penup()
    turtle.goto(0,0)

    #titles (equation, input_range)
    turtle.color("red")  
    turtle.penup()
    turtle.goto(-screen_dimension[0]+100,screen_dimension[1]-30)
    turtle.pendown()
    turtle.write("Wykres f(x)="+function)
    turtle.penup()
    turtle.goto(-screen_dimension[0]+100,screen_dimension[1]-40)
    turtle.pendown()
    turtle.write("input_range: "+str(input_range))
    turtle.penup()

def draw_borders(screen_dimension, left, right, down, up):
    """
    Draws border titles
    @param screen_dimension
    @param left - left x
    @param right - right x
    @param up - up y
    @param down - down y
    """
    #boundary titles
    turtle.color("black")  
    turtle.penup()
    turtle.goto(-screen_dimension[0]+100,10)
    turtle.pendown()
    if(left<0):
        turtle.write(str(left))
    turtle.penup()
    turtle.goto(screen_dimension[0]-150,10)
    turtle.pendown()
    turtle.write(str(right))
    turtle.penup()
    turtle.goto(5,screen_dimension[1]-20)
    turtle.pendown()
    turtle.write(str(up))
    turtle.penup()
    turtle.goto(5,-screen_dimension[1]+15)
    turtle.pendown()
    if(down<0):
        turtle.write(str(down))

def draw_stars():
	for i in range(NSTARS):
		x = random.randint(MINX, MAXX)
		y = random.randint(GROUNDY, MAXY)
		turtle.goto(x, y)
		turtle.color('white')
		turtle.dot(1)

def draw_star(size, color):

    turtle.pendown()
    turtle.begin_fill()
    turtle.color(1,1,1)
    turtle.forward(2.5) 
    turtle.left(size)
    turtle.forward(2.5)
    turtle.right(144)
    turtle.forward(2.5)
    turtle.left(size)
    turtle.forward(2.5)
    turtle.right(144)
    turtle.forward(2.5)
    turtle.left(size)
    turtle.forward(2.5)
    turtle.right(144)
    turtle.forward(2.5)
    turtle.left(size)
    turtle.forward(2.5)
    turtle.right(144)
    turtle.forward(2.5)
    turtle.left(size)
    turtle.forward(2.5)
    turtle.right(144)
    turtle.end_fill()
    turtle.penup()

	def draw(self):
		
		turtle.penup()
		turtle.goto(self.point_st)
		turtle.pendown()
		turtle.color(self.border_c, self.fill_c)	
		self._draw()

def forGlory(sideLength=50):
	turtle.left(150)
	turtle.penup()
	turtle.setpos(-25,75)
	turtle.color("blue")
	turtle.pendown()
	hexagon(sideLength)

def star( x, y, scale, fill, color ):
	'''draws a star given location, scale, and color'''
	goto( x, y )
	
	if fill == "True":
		'''if the scale is 1, and fill == True
			then this function will draw a star 
			with its left point at (x,y) and
			will have star ray lengths of 50
			and filled with the color given'''
		t.begin_fill()
		t.color(color)
		for i in range(10):
			t.forward(50*scale)
			t.right(108)
			t.forward(50*scale)
			t.left(144)
		t.end_fill()
	else: 
		'''if the scale is 1, and fill == False
			then this function will draw a star 
			with its left point at (x,y) and
			will have star ray lengths of 50
			and with no color fill'''
		t.begin_fill()
		for i in range(10):
			t.forward(50*scale)
			t.right(108)
			t.forward(50*scale)
			t.left(144)

def tscheme_color(c):
    """Set the color to C, a string such as '"red"' or '"#ffc0c0"' (representing
    hexadecimal red, green, and blue values."""
    _tscheme_prep()
    check_type(c, scheme_stringp, 0, "color")
    turtle.color(eval(c))
    return okay

def cloud( x, y, scale, color):
	'''draws a cloud given location and scale'''
	goto( x, y )
	t.begin_fill()
	t.color(color)
	t.circle(50*scale)
	t.end_fill()
	t.begin_fill()
	t.color(color)
	t.up()
	t.forward(25*scale)
	t.down()
	t.circle(50*scale)
	t.end_fill()
	t.begin_fill()
	t.color(color)
	t.up()
	t.forward(35*scale)
	t.down()
	t.circle(50*scale)
	t.end_fill()
	t.begin_fill()
	t.color(color)
	t.up()
	t.forward(25*scale)
	t.down()
	t.circle(50*scale)
	t.end_fill()
	t.begin_fill()
	t.color(color)
	t.up()
	t.forward(25*scale)
	t.down()
	t.end_fill()