├── .gitignore ├── LICENSE ├── README.md ├── main.py ├── moon.gif ├── screenshot └── 0.png └── temp.py /.gitignore: -------------------------------------------------------------------------------- 1 | # Byte-compiled / optimized / DLL files 2 | __pycache__/ 3 | *.py[cod] 4 | *$py.class 5 | 6 | # C extensions 7 | *.so 8 | 9 | # Distribution / packaging 10 | .Python 11 | build/ 12 | develop-eggs/ 13 | dist/ 14 | downloads/ 15 | eggs/ 16 | .eggs/ 17 | lib/ 18 | lib64/ 19 | parts/ 20 | sdist/ 21 | var/ 22 | wheels/ 23 | pip-wheel-metadata/ 24 | share/python-wheels/ 25 | *.egg-info/ 26 | .installed.cfg 27 | *.egg 28 | MANIFEST 29 | 30 | # PyInstaller 31 | # Usually these files are written by a python script from a template 32 | # before PyInstaller builds the exe, so as to inject date/other infos into it. 33 | *.manifest 34 | *.spec 35 | 36 | # Installer logs 37 | pip-log.txt 38 | pip-delete-this-directory.txt 39 | 40 | # Unit test / coverage reports 41 | htmlcov/ 42 | .tox/ 43 | .nox/ 44 | .coverage 45 | .coverage.* 46 | .cache 47 | nosetests.xml 48 | coverage.xml 49 | *.cover 50 | *.py,cover 51 | .hypothesis/ 52 | .pytest_cache/ 53 | 54 | # Translations 55 | *.mo 56 | *.pot 57 | 58 | # Django stuff: 59 | *.log 60 | local_settings.py 61 | db.sqlite3 62 | db.sqlite3-journal 63 | 64 | # Flask stuff: 65 | instance/ 66 | .webassets-cache 67 | 68 | # Scrapy stuff: 69 | .scrapy 70 | 71 | # Sphinx documentation 72 | docs/_build/ 73 | 74 | # PyBuilder 75 | target/ 76 | 77 | # Jupyter Notebook 78 | .ipynb_checkpoints 79 | 80 | # IPython 81 | profile_default/ 82 | ipython_config.py 83 | 84 | # pyenv 85 | .python-version 86 | 87 | # pipenv 88 | # According to pypa/pipenv#598, it is recommended to include Pipfile.lock in version control. 89 | # However, in case of collaboration, if having platform-specific dependencies or dependencies 90 | # having no cross-platform support, pipenv may install dependencies that don't work, or not 91 | # install all needed dependencies. 92 | #Pipfile.lock 93 | 94 | # PEP 582; used by e.g. github.com/David-OConnor/pyflow 95 | __pypackages__/ 96 | 97 | # Celery stuff 98 | celerybeat-schedule 99 | celerybeat.pid 100 | 101 | # SageMath parsed files 102 | *.sage.py 103 | 104 | # Environments 105 | .env 106 | .venv 107 | env/ 108 | venv/ 109 | ENV/ 110 | env.bak/ 111 | venv.bak/ 112 | 113 | # Spyder project settings 114 | .spyderproject 115 | .spyproject 116 | 117 | # Rope project settings 118 | .ropeproject 119 | 120 | # mkdocs documentation 121 | /site 122 | 123 | # mypy 124 | .mypy_cache/ 125 | .dmypy.json 126 | dmypy.json 127 | 128 | # Pyre type checker 129 | .pyre/ 130 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | MIT License 2 | 3 | Copyright (c) 2020 StanislavPetrovV 4 | 5 | Permission is hereby granted, free of charge, to any person obtaining a copy 6 | of this software and associated documentation files (the "Software"), to deal 7 | in the Software without restriction, including without limitation the rights 8 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 9 | copies of the Software, and to permit persons to whom the Software is 10 | furnished to do so, subject to the following conditions: 11 | 12 | The above copyright notice and this permission notice shall be included in all 13 | copies or substantial portions of the Software. 14 | 15 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 18 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 19 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 20 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 21 | SOFTWARE. 22 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # Python-2D-Fractal-Tree 2 | Drawing 2D Fractal Tree using L-system. Turtle module. 3 | 4 | ![fractal](screenshot/0.png "fractal") 5 | -------------------------------------------------------------------------------- /main.py: -------------------------------------------------------------------------------- 1 | import turtle 2 | from random import randint 3 | 4 | # screen settings 5 | WIDTH, HEIGHT = 1600, 900 6 | screen = turtle.Screen() 7 | screen.setup(WIDTH, HEIGHT) 8 | screen.screensize(3 * WIDTH, 3 * HEIGHT) 9 | screen.bgpic('moon.gif') 10 | screen.delay(0) 11 | # turtle settings 12 | leo = turtle.Turtle() 13 | leo.pensize(3) 14 | leo.speed(0) 15 | leo.penup() 16 | leo.setpos(WIDTH // 6, -HEIGHT // 4 - 25) 17 | leo.pendown() 18 | leo.color('green') 19 | # l-system settings 20 | gens = 13 21 | axiom = 'XY' 22 | chr_1, rule_1 = 'X', 'F[@[-X]+X]' 23 | step = 85 24 | angle = lambda: randint(0, 45) 25 | stack = [] 26 | color = [0.35, 0.2, 0.0] 27 | thickness = 20 28 | 29 | 30 | def apply_rules(axiom): 31 | return ''.join([rule_1 if chr == chr_1 else chr for chr in axiom]) 32 | 33 | 34 | def get_result(gens, axiom): 35 | for gen in range(gens): 36 | axiom = apply_rules(axiom) 37 | return axiom 38 | 39 | 40 | # turtle.pencolor('white') 41 | # turtle.goto(-WIDTH // 2 + 60, HEIGHT // 2 - 100) 42 | # turtle.clear() 43 | # turtle.write(f'generation: {gens}', font=("Arial", 60, "normal")) 44 | 45 | axiom = get_result(gens, axiom) 46 | leo.left(90) 47 | leo.pensize(thickness) 48 | for chr in axiom: 49 | leo.color(color) 50 | if chr == 'F' or chr == 'X': 51 | leo.forward(step) 52 | elif chr == '@': 53 | step -= 6 54 | color[1] += 0.04 55 | thickness -= 2 56 | thickness = max(1, thickness) 57 | leo.pensize(thickness) 58 | elif chr == '+': 59 | leo.right(angle()) 60 | elif chr == '-': 61 | leo.left(angle()) 62 | elif chr == '[': 63 | angle_, pos_ = leo.heading(), leo.pos() 64 | stack.append((angle_, pos_, thickness, step, color[1])) 65 | elif chr == ']': 66 | angle_, pos_, thickness, step, color[1] = stack.pop() 67 | leo.pensize(thickness) 68 | leo.setheading(angle_) 69 | leo.penup() 70 | leo.goto(pos_) 71 | leo.pendown() 72 | 73 | screen.exitonclick() -------------------------------------------------------------------------------- /moon.gif: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/StanislavPetrovV/Python-2D-Fractal-Tree/9e0f77c5b566133ce9d2481a34dd9ea776e1e97a/moon.gif -------------------------------------------------------------------------------- /screenshot/0.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/StanislavPetrovV/Python-2D-Fractal-Tree/9e0f77c5b566133ce9d2481a34dd9ea776e1e97a/screenshot/0.png -------------------------------------------------------------------------------- /temp.py: -------------------------------------------------------------------------------- 1 | import turtle 2 | 3 | # screen settings 4 | WIDTH, HEIGHT = 1600, 900 5 | screen = turtle.Screen() 6 | screen.setup(WIDTH, HEIGHT) 7 | screen.screensize(3 * WIDTH, 3 * HEIGHT) 8 | screen.bgcolor('black') 9 | screen.delay(0) 10 | # turtle settings 11 | leo = turtle.Turtle() 12 | leo.pensize(4) 13 | leo.speed(1) 14 | leo.setpos(-WIDTH // 6, HEIGHT // 6) 15 | leo.color('gold') 16 | # l-system settings 17 | gens = 5 18 | axiom = 'F++F++F' 19 | chr_1, rule_1 = 'F', 'F-F++F-F' 20 | step = 600 21 | angle = 60 22 | 23 | 24 | def apply_rules(axiom): 25 | return ''.join([rule_1 if chr == chr_1 else chr for chr in axiom]) # <----- 26 | 27 | 28 | def get_result(gens, axiom): 29 | for gen in range(gens): 30 | axiom = apply_rules(axiom) 31 | return axiom 32 | 33 | 34 | for gen in range(gens): 35 | turtle.pencolor('white') 36 | turtle.goto(-WIDTH // 2 + 60, HEIGHT // 2 - 100) 37 | turtle.clear() 38 | turtle.write(f'generation: {gen}', align="left", font=("Arial", 60, "normal")) 39 | 40 | leo.setheading(0) 41 | leo.goto(-WIDTH // 6, HEIGHT // 6) 42 | leo.clear() 43 | 44 | length = step / pow(3, gen) 45 | for chr in axiom: 46 | if chr == chr_1: 47 | leo.forward(length) 48 | elif chr == '+': 49 | leo.right(angle) 50 | elif chr == '-': 51 | leo.left(angle) 52 | 53 | axiom = apply_rules(axiom) 54 | 55 | screen.exitonclick() 56 | --------------------------------------------------------------------------------