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Tools for using GeoGebra construction, processing with Manim animation and exporting to SVG and MP4

Project description

AnimaGeo

Installation

pip install --upgrade animageo

Using in terminal

animageo test.ggb -s default.json -px 240 auto

Description:

usage: animageo ggbfile [-o OUTPUT] [-px PX PX] [-s STYLE] [-d DEBUG]

positional arguments:
  ggbfile                       GeoGebra file to parse

options:
  -o OUTPUT, --output OUTPUT    SVG file to export into
  -px PX PX                     image width and height in px (values: num or auto)
  -s STYLE, --style STYLE       JSON file with style definitions    
  -d DEBUG, --debug DEBUG       print options

  -h, --help                    show this help message and exit

Using in code

  1. Prepare code scene.py:
from animageo import *

class TestScene(AnimaGeoScene):
    def construct(self):
        # ............................................................
        # Load geometric construction directly from GeoGebra-file     
        self.loadGGB('scene.ggb', style_file = 'default.json', px_size = [400, 'auto'])
        
        # ............................................................
        # Load your own simplified python-style Code-file for manipulations with geometric construction
        # - add new vars and elements
        # - change previous definitions
        self.loadCode('scene_code.py')

        # ............................................................
        # Stylize elements using their names from GeoGebra-file or from your Code-file
        # - use any predefined attributes from style_file or from Manim
        self.element('a').style['stroke'] = self.style.col 
        self.element('A_1').style['fill'] = self.style.col_accent

        # ............................................................
        # Export current scene to image with px_size width/height
        self.exportSVG('scene.svg')

        # ............................................................
        # Do whatever you do with Manim, but also specific things:

        # - add special ValueTracker and link it to Var in geometric construction
        x = self.addVar('x', 5)

        # - use predefined methods to Show, Hide and Update geometric elements without animation
        self.HideAll()
        self.Show(['A', 'B'])

        # - use predefined methods to Show, Hide and Update geometric elements with animation
        self.playShow(['a'])
        self.element('b').style['stroke_opacity'] = 0.5
        self.playUpdate(['b'])

        # - use tracker values for animation
        self.addUpdater(x)
        self.play(x.animate.set_value(10))
        self.clearUpdater(x)

        # - you may also want to change geometric elements as Manim objects (but without affecting geometric construction)
        a = self.mobject('a')
        b = self.mobject('b')
        self.play(VGroup(a, b).animate.arrange(buff=1).shift(DOWN))
        self.play(FadeOut(a, b))        

and code scene_code.py:

from animageo.code import *

A = Point(x, 0)
B = Intersect(b, c)
a = Segment(A, B)
  1. Run compilation:
manim 'scene.py' TestScene

Style definitions in JSON

Here is an example of JSON-file for styling images:

{
   "name": "default",
   "version": 0.1,
   "style": {
       "dot": {
           "main": 7,
           "bold": 9,
           "aux": 5
       },
       "line": {
           "main": 2,
           "bold": 2.5,
           "aux": 1.5
       },
       "angle": {
           "line": 1,
           "r_default": 20,
           "r_shift": 3,
           "r_right": 14
       },
       "strich": {
           "width": 1,
           "len": 12,
           "shift": 4
       },
       "arrow": {
           "width": 7.5,
           "length": 10.5
       },
       "color": {
           "black": "#000000",
           "main": "#2581b5",
           "light": "#bef3fc",
           "aux": "#000000",
           "acc": "#ef60ab",
           "acc_light": "#ffd2ee"
       },
       "font": {
           "size": 17
       }
   },
   "technic": {
       "line_caps": "round",
       "right_angle_joint": "miter",
       "polygon_boundary_layer": "top",
       "points_display": "only_labels",
       "crop_padding": 4,
       "scale_export": 0.75
   },
   "ggb_export": {
       "colors": {
           "#1565c0": "main",
           "#1565c0 0.1": "main 0",
           "#d32f2f": "acc",
           "#d32f2f 0.1": "acc_light 1",
           "#616161": "aux",
           "#000000 0.6": "main",
           "#000000 0.1": "light 1",
           "#1565c0 0": "white 1",
           "#d32f2f 0": "white 1"
       },
       "dot": {
           "5": "main"
       },
       "line": {
           "5": "main",
           "3": "aux"
       }
   }
}

Description:

technic:

round - закруглять концы всех отрезков butt - обрезать концы всех отрезков square - концы отрезков завершаются квадратами

        "line_caps": "round" | "butt" | "square",  

round - скруглять соединение уголка в отображении отметки прямого угла

        "right_angle_joint": "round" | "bevel" | "miter" 

top - отображать границу многоугольников поверх остальных линий (Важно! это касается именно дополнительных отрезков-сторон, создаваемых автоматически в GeoGebra)

        "polygon_boundary_layer": "top" | "auto"

only_labels - скрывать все точки (оставляя их надписи, если они есть) only_points - скрывать надписи (оставляя точки, если они видимые)

        "points_display": "only_labels" | "only_points" | "auto"

обрезать картинку по содержимому, оставляя поле 4px

        "crop_padding": 4 

вспомогательный коэффициент растяжения/сжатия всех параметров при экспорте в svg (должен влиять и на размеры и на толщины, стили…)

        "scale_export": 0.75,  1 

ggb_export:

конвертирует конкретные цвета из GeoGebra в другие цвета c возможным параметром прозрачности (цвет либо конкретный, либо по имени из стилевика)

    "colors": {}

конвертирует определенную ширину линии из GeoGebra в другую заданную ширину (величина либо конкретная, либо по имени из стилевика)

    "line": {}

конвертирует определенный размер точек из GeoGebra в другой заданный размер (величина либо конкретная, либо по имени из стилевика)

    "dot": {}

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