├── manim_presentation ├── __init__.py ├── wizard.py ├── slide.py └── present.py ├── .gitignore ├── .github └── workflows │ └── deploy-pipy.yaml ├── example.py ├── setup.py ├── README.md └── LICENSE /manim_presentation/__init__.py: -------------------------------------------------------------------------------- 1 | from manim_presentation.slide import Slide -------------------------------------------------------------------------------- /.gitignore: -------------------------------------------------------------------------------- 1 | __pycache__/ 2 | /env 3 | /tests 4 | /build 5 | /dist 6 | *.egg-info/ 7 | 8 | /media 9 | /presentation 10 | 11 | /.vscode -------------------------------------------------------------------------------- /.github/workflows/deploy-pipy.yaml: -------------------------------------------------------------------------------- 1 | name: Publish top PyPI 2 | on: push 3 | 4 | jobs: 5 | build-n-publish: 6 | name: Build and publish to PyPI 7 | if: startsWith(github.ref, 'refs/tags') 8 | runs-on: ubuntu-18.04 9 | steps: 10 | - uses: actions/checkout@master 11 | - name: Set up Python 3.7 12 | uses: actions/setup-python@v1 13 | with: 14 | python-version: 3.7 15 | - name: Install 16 | run: python -m pip install build --user 17 | - name: Build binary wheel and a source tarball 18 | run: python -m build --sdist --wheel --outdir dist/ . 19 | - name: Publish to PyPI 20 | uses: pypa/gh-action-pypi-publish@master 21 | with: 22 | password: ${{ secrets.PYPI_API_TOKEN }} -------------------------------------------------------------------------------- /example.py: -------------------------------------------------------------------------------- 1 | from manim import * 2 | from manim_presentation import Slide 3 | 4 | class Example(Slide): 5 | def construct(self): 6 | circle = Circle(radius=3, color=BLUE) 7 | dot = Dot() 8 | 9 | self.play(GrowFromCenter(circle)) 10 | self.pause() 11 | 12 | self.start_loop() 13 | self.play(MoveAlongPath(dot, circle), run_time=2, rate_func=linear) 14 | self.end_loop() 15 | 16 | self.play(dot.animate.move_to(ORIGIN)) 17 | self.pause() 18 | 19 | self.play(dot.animate.move_to(RIGHT*3)) 20 | self.pause() 21 | 22 | self.start_loop() 23 | self.play(MoveAlongPath(dot, circle), run_time=2, rate_func=linear) 24 | self.end_loop() 25 | 26 | # Each slide MUST end with an animation (a self.wait is considered an animation) 27 | self.play(dot.animate.move_to(ORIGIN)) 28 | -------------------------------------------------------------------------------- /setup.py: -------------------------------------------------------------------------------- 1 | import setuptools 2 | import os 3 | 4 | with open(os.path.join(os.path.dirname(os.path.realpath(__file__)), "README.md"), "r") as fh: 5 | long_description = fh.read() 6 | 7 | setuptools.setup( 8 | name="manim_presentation", 9 | version="0.2.1", 10 | author="Federico A. Galatolo", 11 | author_email="federico.galatolo@ing.unipi.it", 12 | description="Tool for live presentations using manim", 13 | url="https://github.com/galatolofederico/manim-presentation", 14 | long_description=long_description, 15 | long_description_content_type="text/markdown", 16 | packages=setuptools.find_packages(), 17 | entry_points = { 18 | "console_scripts": [ 19 | "manim_presentation=manim_presentation.present:main", 20 | "manim-presentation=manim_presentation.present:main", 21 | "manim-presentation-wizard=manim_presentation.wizard:main", 22 | ], 23 | }, 24 | install_requires=[ 25 | ], 26 | classifiers=[ 27 | "Programming Language :: Python :: 3.7", 28 | "License :: OSI Approved :: GNU General Public License v3 (GPLv3)", 29 | "Operating System :: OS Independent", 30 | "Development Status :: 4 - Beta" 31 | ], 32 | ) -------------------------------------------------------------------------------- /manim_presentation/wizard.py: -------------------------------------------------------------------------------- 1 | import cv2 2 | import numpy as np 3 | import json 4 | import os 5 | import sys 6 | 7 | def prompt(question): 8 | font_args = (cv2.FONT_HERSHEY_SIMPLEX, 0.7, 255) 9 | display = np.zeros((130, 420), np.uint8) 10 | 11 | cv2.putText( 12 | display, 13 | "* Manim Presentation Wizard *", 14 | (50, 33), 15 | *font_args 16 | ) 17 | cv2.putText( 18 | display, 19 | question, 20 | (30, 85), 21 | *font_args 22 | ) 23 | 24 | cv2.imshow("wizard", display) 25 | return cv2.waitKeyEx(-1) 26 | 27 | def main(): 28 | if(os.path.exists("./manim-presentation.json")): 29 | print("The manim-presentation.json configuration file exists") 30 | ans = input("Do you want to continue and overwrite it? (y/n): ") 31 | if ans != "y": sys.exit(0) 32 | 33 | prompt("Press any key to continue") 34 | PLAYPAUSE_KEY = prompt("Press the PLAY/PAUSE key") 35 | CONTINUE_KEY = prompt("Press the CONTINUE/NEXT key") 36 | BACK_KEY = prompt("Press the BACK key") 37 | REWIND_KEY = prompt("Press the REWIND key") 38 | QUIT_KEY = prompt("Press the QUIT key") 39 | 40 | config_file = open("./manim-presentation.json", "w") 41 | json.dump(dict( 42 | PLAYPAUSE_KEY=PLAYPAUSE_KEY, 43 | CONTINUE_KEY=CONTINUE_KEY, 44 | BACK_KEY=BACK_KEY, 45 | REWIND_KEY=REWIND_KEY, 46 | QUIT_KEY=QUIT_KEY 47 | ), config_file) 48 | config_file.close() 49 | 50 | 51 | -------------------------------------------------------------------------------- /manim_presentation/slide.py: -------------------------------------------------------------------------------- 1 | import os 2 | import json 3 | import shutil 4 | from manim import Scene, config 5 | from manim.animation.animation import Wait 6 | 7 | class Slide(Scene): 8 | def __init__(self, *args, **kwargs): 9 | self.output_folder = kwargs.pop("output_folder", "./presentation") 10 | super(Slide, self).__init__(*args, **kwargs) 11 | self.slides = list() 12 | self.current_slide = 1 13 | self.current_animation = 0 14 | self.loop_start_animation = None 15 | self.pause_start_animation = 0 16 | 17 | def play(self, *args, **kwargs): 18 | super(Slide, self).play(*args, **kwargs) 19 | self.current_animation += 1 20 | 21 | def pause(self): 22 | self.slides.append(dict( 23 | type="slide", 24 | start_animation=self.pause_start_animation, 25 | end_animation=self.current_animation, 26 | number=self.current_slide 27 | )) 28 | self.current_slide += 1 29 | self.pause_start_animation = self.current_animation 30 | 31 | def start_loop(self): 32 | assert self.loop_start_animation is None, "You cant nest loops" 33 | self.loop_start_animation = self.current_animation 34 | 35 | def end_loop(self): 36 | assert self.loop_start_animation is not None, "You have to start a loop before ending it" 37 | self.slides.append(dict( 38 | type="loop", 39 | start_animation=self.loop_start_animation, 40 | end_animation=self.current_animation, 41 | number=self.current_slide 42 | )) 43 | self.current_slide += 1 44 | self.loop_start_animation = None 45 | self.pause_start_animation = self.current_animation 46 | 47 | def render(self, *args, **kwargs): 48 | # We need to disable the caching limit since we rely on intermidiate files 49 | max_files_cached = config["max_files_cached"] 50 | config["max_files_cached"] = float("inf") 51 | 52 | super(Slide, self).render(*args, **kwargs) 53 | 54 | config["max_files_cached"] = max_files_cached 55 | 56 | if not os.path.exists(self.output_folder): 57 | os.mkdir(self.output_folder) 58 | 59 | files_folder = os.path.join(self.output_folder, "files") 60 | if not os.path.exists(files_folder): 61 | os.mkdir(files_folder) 62 | 63 | scene_name = type(self).__name__ 64 | scene_files_folder = os.path.join(files_folder, scene_name) 65 | 66 | if os.path.exists(scene_files_folder): 67 | shutil.rmtree(scene_files_folder) 68 | 69 | if not os.path.exists(scene_files_folder): 70 | os.mkdir(scene_files_folder) 71 | 72 | files = list() 73 | for src_file in self.renderer.file_writer.partial_movie_files: 74 | dst_file = os.path.join(scene_files_folder, os.path.basename(src_file)) 75 | shutil.copyfile(src_file, dst_file) 76 | files.append(dst_file) 77 | 78 | f = open(os.path.join(self.output_folder, "%s.json" % (scene_name, )), "w") 79 | json.dump(dict( 80 | slides=self.slides, 81 | files=files 82 | ), f) 83 | f.close() 84 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # For an actively developed fork please check out [manim-slides](https://github.com/jeertmans/manim-slides)! 2 | 3 | # manim-presentation 4 | 5 | Tool for live presentations using [manim](https://www.manim.community/). 6 | 7 | ## Install 8 | 9 | ``` 10 | pip install manim-presentation opencv-python 11 | ``` 12 | 13 | ## Usage 14 | 15 | Use the class `Slide` as your scenes base class 16 | 17 | ```python 18 | from manim_presentation import Slide 19 | 20 | class Example(Slide): 21 | def construct(self): 22 | ... 23 | ``` 24 | 25 | call `self.pause()` when you want to pause the playback and wait for an input to continue (check the keybindings) 26 | 27 | Wrap a series of animations between `self.start_loop()` and `self.stop_loop()` when you want to loop them (until input to continue) 28 | 29 | ```python 30 | from manim import * 31 | from manim_presentation import Slide 32 | 33 | class Example(Slide): 34 | def construct(self): 35 | circle = Circle(radius=3, color=BLUE) 36 | dot = Dot() 37 | 38 | self.play(GrowFromCenter(circle)) 39 | self.pause() 40 | 41 | self.start_loop() 42 | self.play(MoveAlongPath(dot, circle), run_time=2, rate_func=linear) 43 | self.end_loop() 44 | 45 | self.play(dot.animate.move_to(ORIGIN)) 46 | self.pause() 47 | 48 | self.wait() 49 | ``` 50 | 51 | You **must** end your `Slide` with a `self.play(...)` or a `self.wait(..)` 52 | 53 | To start the presentation using `Scene1`, `Scene2` and so on simply run: 54 | 55 | ``` 56 | manim_presentation Scene1 Scene2... 57 | ``` 58 | 59 | ## Keybindings 60 | 61 | Default keybindings to control the presentation 62 | 63 | | Keybinding | Action | 64 | |:-----------:|:------------------------:| 65 | | Right Arrow | Continue/Next Slide | 66 | | Left Arrow | Previous Slide | 67 | | R | Re-Animate Current Slide | 68 | | Spacebar | Play/Pause | 69 | | Q | Quit | 70 | 71 | 72 | You can run the **configuration wizard** with 73 | 74 | ``` 75 | manim-presentation-wizard 76 | ``` 77 | 78 | Alternatively you can specify different keybindings creating a file named `manim-presentation.json` with the keys: `QUIT_KEY` `CONTINUE_KEY` `BACK_KEY` `REWIND_KEY` and `PLAYPAUSE_KEY` 79 | `manim-presentation` uses `cv2.waitKeyEx()` to wait for keypresses 80 | 81 | ## Run Example 82 | 83 | Clone this repository 84 | 85 | ``` 86 | git clone https://github.com/galatolofederico/manim-presentation.git 87 | cd manim-presentation 88 | ``` 89 | 90 | Create a virtualenv 91 | 92 | ``` 93 | virtualenv --python=python3.7 env 94 | . ./env/bin/activate 95 | ``` 96 | 97 | Install `manim` and `manim-presentation` 98 | 99 | ``` 100 | pip install manim manim-presentation opencv-python 101 | ``` 102 | 103 | Render the example scene 104 | 105 | ``` 106 | manim -qh example.py 107 | ``` 108 | 109 | Run the presentation 110 | 111 | ``` 112 | manim-presentation Example 113 | ``` 114 | 115 | ## Contributions and license 116 | 117 | The code is released as Free Software under the [GNU/GPLv3](https://choosealicense.com/licenses/gpl-3.0/) license. Copying, adapting and republishing it is not only consent but also encouraged. 118 | 119 | For any further question feel free to reach me at [federico.galatolo@ing.unipi.it](mailto:federico.galatolo@ing.unipi.it) or on Telegram [@galatolo](https://t.me/galatolo) 120 | -------------------------------------------------------------------------------- /manim_presentation/present.py: -------------------------------------------------------------------------------- 1 | import cv2 2 | import numpy as np 3 | import os 4 | import sys 5 | import json 6 | import math 7 | import time 8 | import argparse 9 | from enum import Enum 10 | import platform 11 | 12 | class Config: 13 | @classmethod 14 | def init(cls): 15 | if platform.system() == "Windows": 16 | cls.QUIT_KEY = ord("q") 17 | cls.CONTINUE_KEY = 2555904 #right arrow 18 | cls.BACK_KEY = 2424832 #left arrow 19 | cls.REWIND_KEY = ord("r") 20 | cls.PLAYPAUSE_KEY = 32 #spacebar 21 | else: 22 | cls.QUIT_KEY = ord("q") 23 | cls.CONTINUE_KEY = 65363 #right arrow 24 | cls.BACK_KEY = 65361 #left arrow 25 | cls.REWIND_KEY = ord("r") 26 | cls.PLAYPAUSE_KEY = 32 #spacebar 27 | 28 | if os.path.exists(os.path.join(os.getcwd(), "./manim-presentation.json")): 29 | json_config = json.load(open(os.path.join(os.getcwd(), "./manim-presentation.json"), "r")) 30 | for key, value in json_config.items(): 31 | setattr(cls, key, value) 32 | 33 | class State(Enum): 34 | PLAYING = 0 35 | PAUSED = 1 36 | WAIT = 2 37 | END = 3 38 | 39 | def __str__(self): 40 | if self.value == 0: return "Playing" 41 | if self.value == 1: return "Paused" 42 | if self.value == 2: return "Wait" 43 | if self.value == 3: return "End" 44 | return "..." 45 | 46 | def now(): 47 | return round(time.time() * 1000) 48 | 49 | def fix_time(x): 50 | return x if x > 0 else 1 51 | 52 | class Presentation: 53 | def __init__(self, config, last_frame_next=False): 54 | self.last_frame_next = last_frame_next 55 | self.slides = config["slides"] 56 | self.files = config["files"] 57 | 58 | self.lastframe = [] 59 | 60 | self.caps = [None for _ in self.files] 61 | self.reset() 62 | self.add_last_slide() 63 | 64 | def add_last_slide(self): 65 | last_slide_end = self.slides[-1]["end_animation"] 66 | last_animation = len(self.files) 67 | self.slides.append(dict( 68 | start_animation = last_slide_end, 69 | end_animation = last_animation, 70 | type = "last", 71 | number = len(self.slides) + 1, 72 | terminated = False 73 | )) 74 | 75 | 76 | def reset(self): 77 | self.current_animation = 0 78 | self.load_this_cap(0) 79 | self.current_slide_i = 0 80 | self.slides[-1]["terminated"] = False 81 | 82 | def next(self): 83 | if self.current_slide["type"] == "last": 84 | self.current_slide["terminated"] = True 85 | else: 86 | self.current_slide_i = min(len(self.slides) - 1, self.current_slide_i + 1) 87 | self.rewind_slide() 88 | 89 | def prev(self): 90 | self.current_slide_i = max(0, self.current_slide_i - 1) 91 | self.rewind_slide() 92 | 93 | def rewind_slide(self): 94 | self.current_animation = self.current_slide["start_animation"] 95 | self.current_cap.set(cv2.CAP_PROP_POS_FRAMES, 0) 96 | 97 | def load_this_cap(self,cap_number): 98 | if self.caps[cap_number] == None: 99 | # unload other caps 100 | for i in range(len(self.caps)): 101 | if self.caps[i] != None: 102 | self.caps[i].release() 103 | self.caps[i] = None 104 | # load this cap 105 | self.caps[cap_number] = cv2.VideoCapture(self.files[cap_number]) 106 | 107 | @property 108 | def current_slide(self): 109 | return self.slides[self.current_slide_i] 110 | 111 | @property 112 | def current_cap(self): 113 | self.load_this_cap(self.current_animation) 114 | return self.caps[self.current_animation] 115 | 116 | @property 117 | def fps(self): 118 | return self.current_cap.get(cv2.CAP_PROP_FPS) 119 | 120 | # This function updates the state given the previous state. 121 | # It does this by reading the video information and checking if the state is still correct. 122 | # It returns the frame to show (lastframe) and the new state. 123 | def update_state(self, state): 124 | if state == State.PAUSED: 125 | if len(self.lastframe) == 0: 126 | _, self.lastframe = self.current_cap.read() 127 | return self.lastframe, state 128 | still_playing, frame = self.current_cap.read() 129 | if still_playing: 130 | self.lastframe = frame 131 | elif state in [state.WAIT, state.PAUSED]: 132 | return self.lastframe, state 133 | elif self.current_slide["type"] == "last" and self.current_slide["terminated"]: 134 | return self.lastframe, State.END 135 | 136 | if not still_playing: 137 | if self.current_slide["end_animation"] == self.current_animation + 1: 138 | if self.current_slide["type"] == "slide": 139 | # To fix "it always ends one frame before the animation", uncomment this. 140 | # But then clears on the next slide will clear the stationary after this slide. 141 | if self.last_frame_next: 142 | self.load_this_cap(self.next_cap) 143 | self.next_cap = self.caps[self.current_animation + 1] 144 | 145 | self.next_cap.set(cv2.CAP_PROP_POS_FRAMES, 0) 146 | _, self.lastframe = self.next_cap.read() 147 | state = State.WAIT 148 | elif self.current_slide["type"] == "loop": 149 | self.current_animation = self.current_slide["start_animation"] 150 | state = State.PLAYING 151 | self.rewind_slide() 152 | elif self.current_slide["type"] == "last": 153 | self.current_slide["terminated"] = True 154 | elif self.current_slide["type"] == "last" and self.current_slide["end_animation"] == self.current_animation: 155 | state = State.WAIT 156 | else: 157 | # Play next video! 158 | self.current_animation += 1 159 | self.load_this_cap(self.current_animation) 160 | # Reset video to position zero if it has been played before 161 | self.current_cap.set(cv2.CAP_PROP_POS_FRAMES, 0) 162 | 163 | return self.lastframe, state 164 | 165 | 166 | class Display: 167 | def __init__(self, presentations, start_paused=False, fullscreen=False): 168 | self.presentations = presentations 169 | self.start_paused = start_paused 170 | 171 | self.state = State.PLAYING 172 | self.lastframe = None 173 | self.current_presentation_i = 0 174 | 175 | self.lag = 0 176 | self.last_time = now() 177 | 178 | if fullscreen: 179 | cv2.namedWindow("Video", cv2.WND_PROP_FULLSCREEN) 180 | cv2.setWindowProperty("Video", cv2.WND_PROP_FULLSCREEN, cv2.WINDOW_FULLSCREEN) 181 | 182 | @property 183 | def current_presentation(self): 184 | return self.presentations[self.current_presentation_i] 185 | 186 | def run(self): 187 | while True: 188 | self.lastframe, self.state = self.current_presentation.update_state(self.state) 189 | if self.state == State.PLAYING or self.state == State.PAUSED: 190 | if self.start_paused: 191 | self.state = State.PAUSED 192 | self.start_paused = False 193 | if self.state == State.END: 194 | if self.current_presentation_i == len(self.presentations) - 1: 195 | self.quit() 196 | else: 197 | self.current_presentation_i += 1 198 | self.state = State.PLAYING 199 | self.handle_key() 200 | self.show_video() 201 | self.show_info() 202 | 203 | def show_video(self): 204 | self.lag = now() - self.last_time 205 | self.last_time = now() 206 | cv2.imshow("Video", self.lastframe) 207 | 208 | def show_info(self): 209 | info = np.zeros((130, 420), np.uint8) 210 | font_args = (cv2.FONT_HERSHEY_SIMPLEX, 0.7, 255) 211 | grid_x = [30, 230] 212 | grid_y = [30, 70, 110] 213 | 214 | cv2.putText( 215 | info, 216 | f"Animation: {self.current_presentation.current_animation}", 217 | (grid_x[0], grid_y[0]), 218 | *font_args 219 | ) 220 | cv2.putText( 221 | info, 222 | f"State: {self.state}", 223 | (grid_x[1], grid_y[0]), 224 | *font_args 225 | ) 226 | 227 | cv2.putText( 228 | info, 229 | f"Slide {self.current_presentation.current_slide['number']}/{len(self.current_presentation.slides)}", 230 | (grid_x[0], grid_y[1]), 231 | *font_args 232 | ) 233 | cv2.putText( 234 | info, 235 | f"Slide Type: {self.current_presentation.current_slide['type']}", 236 | (grid_x[1], grid_y[1]), 237 | *font_args 238 | ) 239 | 240 | cv2.putText( 241 | info, 242 | f"Scene {self.current_presentation_i + 1}/{len(self.presentations)}", 243 | ((grid_x[0]+grid_x[1])//2, grid_y[2]), 244 | *font_args 245 | ) 246 | 247 | cv2.imshow("Info", info) 248 | 249 | def handle_key(self): 250 | sleep_time = math.ceil(1000/self.current_presentation.fps) 251 | key = cv2.waitKeyEx(fix_time(sleep_time - self.lag)) 252 | 253 | if key == Config.QUIT_KEY: 254 | self.quit() 255 | elif self.state == State.PLAYING and key == Config.PLAYPAUSE_KEY: 256 | self.state = State.PAUSED 257 | elif self.state == State.PAUSED and key == Config.PLAYPAUSE_KEY: 258 | self.state = State.PLAYING 259 | elif self.state == State.WAIT and (key == Config.CONTINUE_KEY or key == Config.PLAYPAUSE_KEY): 260 | self.current_presentation.next() 261 | self.state = State.PLAYING 262 | elif self.state == State.PLAYING and key == Config.CONTINUE_KEY: 263 | self.current_presentation.next() 264 | elif key == Config.BACK_KEY: 265 | if self.current_presentation.current_slide_i == 0: 266 | self.current_presentation_i = max(0, self.current_presentation_i - 1) 267 | self.current_presentation.reset() 268 | self.state = State.PLAYING 269 | else: 270 | self.current_presentation.prev() 271 | self.state = State.PLAYING 272 | elif key == Config.REWIND_KEY: 273 | self.current_presentation.rewind_slide() 274 | self.state = State.PLAYING 275 | 276 | 277 | def quit(self): 278 | cv2.destroyAllWindows() 279 | sys.exit() 280 | 281 | 282 | def main(): 283 | parser = argparse.ArgumentParser() 284 | 285 | parser.add_argument("scenes", metavar="scenes", type=str, nargs="+", help="Scenes to present") 286 | parser.add_argument("--folder", type=str, default="./presentation", help="Presentation files folder") 287 | parser.add_argument("--start-paused", action="store_true", help="Start paused") 288 | parser.add_argument("--fullscreen", action="store_true", help="Fullscreen") 289 | parser.add_argument("--last-frame-next", action="store_true", help="Show the next animation first frame as last frame (hack)") 290 | 291 | args = parser.parse_args() 292 | args.folder = os.path.normcase(args.folder) 293 | 294 | Config.init() 295 | 296 | presentations = list() 297 | for scene in args.scenes: 298 | config_file = os.path.join(args.folder, f"{scene}.json") 299 | if not os.path.exists(config_file): 300 | raise Exception(f"File {config_file} does not exist, check the scene name and make sure to use Slide as your scene base class") 301 | config = json.load(open(config_file)) 302 | presentations.append(Presentation(config, last_frame_next=args.last_frame_next)) 303 | 304 | display = Display(presentations, start_paused=args.start_paused, fullscreen=args.fullscreen) 305 | display.run() 306 | 307 | if __name__ == "__main__": 308 | main() 309 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | GNU GENERAL PUBLIC LICENSE 2 | Version 3, 29 June 2007 3 | 4 | Copyright (C) 2007 Free Software Foundation, Inc. 5 | Everyone is permitted to copy and distribute verbatim copies 6 | of this license document, but changing it is not allowed. 7 | 8 | Preamble 9 | 10 | The GNU General Public License is a free, copyleft license for 11 | software and other kinds of works. 12 | 13 | The licenses for most software and other practical works are designed 14 | to take away your freedom to share and change the works. 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Use with the GNU Affero General Public License. 553 | 554 | Notwithstanding any other provision of this License, you have 555 | permission to link or combine any covered work with a work licensed 556 | under version 3 of the GNU Affero General Public License into a single 557 | combined work, and to convey the resulting work. The terms of this 558 | License will continue to apply to the part which is the covered work, 559 | but the special requirements of the GNU Affero General Public License, 560 | section 13, concerning interaction through a network will apply to the 561 | combination as such. 562 | 563 | 14. Revised Versions of this License. 564 | 565 | The Free Software Foundation may publish revised and/or new versions of 566 | the GNU General Public License from time to time. Such new versions will 567 | be similar in spirit to the present version, but may differ in detail to 568 | address new problems or concerns. 569 | 570 | Each version is given a distinguishing version number. If the 571 | Program specifies that a certain numbered version of the GNU General 572 | Public License "or any later version" applies to it, you have the 573 | option of following the terms and conditions either of that numbered 574 | version or of any later version published by the Free Software 575 | Foundation. If the Program does not specify a version number of the 576 | GNU General Public License, you may choose any version ever published 577 | by the Free Software Foundation. 578 | 579 | If the Program specifies that a proxy can decide which future 580 | versions of the GNU General Public License can be used, that proxy's 581 | public statement of acceptance of a version permanently authorizes you 582 | to choose that version for the Program. 583 | 584 | Later license versions may give you additional or different 585 | permissions. However, no additional obligations are imposed on any 586 | author or copyright holder as a result of your choosing to follow a 587 | later version. 588 | 589 | 15. Disclaimer of Warranty. 590 | 591 | THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY 592 | APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT 593 | HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY 594 | OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, 595 | THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 596 | PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM 597 | IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF 598 | ALL NECESSARY SERVICING, REPAIR OR CORRECTION. 599 | 600 | 16. Limitation of Liability. 601 | 602 | IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING 603 | WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS 604 | THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY 605 | GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE 606 | USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF 607 | DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD 608 | PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), 609 | EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF 610 | SUCH DAMAGES. 611 | 612 | 17. Interpretation of Sections 15 and 16. 613 | 614 | If the disclaimer of warranty and limitation of liability provided 615 | above cannot be given local legal effect according to their terms, 616 | reviewing courts shall apply local law that most closely approximates 617 | an absolute waiver of all civil liability in connection with the 618 | Program, unless a warranty or assumption of liability accompanies a 619 | copy of the Program in return for a fee. 620 | 621 | END OF TERMS AND CONDITIONS 622 | 623 | How to Apply These Terms to Your New Programs 624 | 625 | If you develop a new program, and you want it to be of the greatest 626 | possible use to the public, the best way to achieve this is to make it 627 | free software which everyone can redistribute and change under these terms. 628 | 629 | To do so, attach the following notices to the program. It is safest 630 | to attach them to the start of each source file to most effectively 631 | state the exclusion of warranty; and each file should have at least 632 | the "copyright" line and a pointer to where the full notice is found. 633 | 634 | 635 | Copyright (C) 636 | 637 | This program is free software: you can redistribute it and/or modify 638 | it under the terms of the GNU General Public License as published by 639 | the Free Software Foundation, either version 3 of the License, or 640 | (at your option) any later version. 641 | 642 | This program is distributed in the hope that it will be useful, 643 | but WITHOUT ANY WARRANTY; without even the implied warranty of 644 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 645 | GNU General Public License for more details. 646 | 647 | You should have received a copy of the GNU General Public License 648 | along with this program. If not, see . 649 | 650 | Also add information on how to contact you by electronic and paper mail. 651 | 652 | If the program does terminal interaction, make it output a short 653 | notice like this when it starts in an interactive mode: 654 | 655 | Copyright (C) 656 | This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. 657 | This is free software, and you are welcome to redistribute it 658 | under certain conditions; type `show c' for details. 659 | 660 | The hypothetical commands `show w' and `show c' should show the appropriate 661 | parts of the General Public License. Of course, your program's commands 662 | might be different; for a GUI interface, you would use an "about box". 663 | 664 | You should also get your employer (if you work as a programmer) or school, 665 | if any, to sign a "copyright disclaimer" for the program, if necessary. 666 | For more information on this, and how to apply and follow the GNU GPL, see 667 | . 668 | 669 | The GNU General Public License does not permit incorporating your program 670 | into proprietary programs. If your program is a subroutine library, you 671 | may consider it more useful to permit linking proprietary applications with 672 | the library. If this is what you want to do, use the GNU Lesser General 673 | Public License instead of this License. But first, please read 674 | . --------------------------------------------------------------------------------