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
- 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)
- 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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