fleur.py

created by andreanx

created on February 03, 2019

1.28 KB

Draws a flower. Requires version 10.0.0 or newer (turtle module). See example at the end of the script.

Usage : fleur(n,k,l,f,c) with :

n: number of petals

k: number of leafs

l: length of stalk (drawn with the current position and orientation of the turtle)

f: a factor for the size of the leafs and petals, default is 1

c: color of the petals


from turtle import *
import kandinsky

def forbackward(d):
  forward(d)
  backward(d)
  
def pf(d=1,gd=-1,nervure=False):
  n=9
  pos=position()
  for j in range(2):
    for k in range(n):
      forward(d)
      right(gd*90/n)
    right(gd*90)
  if nervure:
    right(gd*40)
    forbackward(5*d)
    right(-gd*40)

def fleur(npetales=8,nfeuilles=2,ltige=160,kfeuille=1,c=kandinsky.color(255,255,0)):
  d=ltige/(nfeuilles+1)
  color(0,191,0)
  for j in range(nfeuilles):
    forward(d)
    pf(kfeuille,2*(j%2)-1,True)
  forward(d)
  color((c>>11)<<3,((c>>5)%64)<<2,(c%32)<<3)
  for j in range(npetales):
    pf(kfeuille,-1)
    left(360/npetales)

#example
from math import *

def hsv2color(h,s=1,v=1):
  c=v*s
  x=c*(1-abs((h%120)/60-1))
  m=v-c
  k=int(h/60)
  r=255*(m+x*(k==1 or k==4)+c*(k==5 or k==0))
  g=255*(m+c*(k==1 or k==2)+x*(k==3 or k==0))
  b=255*(m+x*(k==2 or k==5)+c*(k==3 or k==4))
  return kandinsky.color(round(r),round(g),round(b))

def horiz(y,col):
  for x in range(320):
    kandinsky.set_pixel(x,y,col)

for j in range(112):
  horiz(111-j,hsv2color(210,0+1*j/111,1))
  horiz(111+j,hsv2color(30,.1+.9*j/111,.7))

sw=320
sh=222
ymax=sh/2
ymin=ymax-sh+1
xmin=-sw/2
xmax=xmin+sw-1
penup()
goto(0,ymin)
setheading(90)
pendown()
fleur(12,9,ymax-ymin+1-26,3,kandinsky.color(255,255,0))