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Manim tutorial 1

1.1 Basic elements

from manimlib.imports import *
class NameOfScene(Scene):
    def construct(self):
        # Animation progress

1.2 Animations and pauses

    def construct(self):
        text = TextMobject("another text")
        self.play( Write(text), run_time=3)  # play anim
        self.wait(3) # pause
  • other animations
    • GrowFromCenter
    • FadeIn
    • ...
    • more: manimlib/animation/creation.py
  • self.remove to remove an object

1.3 Positions, rotations and fonts

  • positions

    1. Abs postions
      1. .to_edge() to place an object on the sides of screen
        • i.e. obj.to_edge(UP), UP = np.array( [0,1.0] )
      2. .to_corner() to place an object on the corner
        • i.e. obj.to_corner(DR) , DR = np.array( [1,-1.0]) = UP + RIGHT
    2. Relative postions
      1. .move_to([ vector|obj ]) # from center of obj
      2. next_to(obj, vector, buff=x) # from the edge of obj
      3. shift(vector) # move 1 unit

  • rotation

    • .rotate( radians, about_point = coord )
      • or you can use .rotate( n * DEGREES )
    • .flip(vector) , i.e. .flip(UP)

  • font

    class TextFonts(Scene):
    def construct(self):
        textNormal = TextMobject("{Roman serif text 012.\\#!?} Text")
        textItalic = TextMobject("\\textit{Italic text 012.\\#!?} Text")
        textTypewriter = TextMobject("\\texttt{Typewritter text 012.\\#!?} Text")
        textBold = TextMobject("\\textbf{Bold text 012.\\#!?} Text")
        textSL = TextMobject("\\textsl{Slanted text 012.\\#!?} Text")
        textSC = TextMobject("\\textsc{Small caps text 012.\\#!?} Text")
        textNormal.to_edge(UP)
        textItalic.next_to(textNormal,DOWN,buff=.5)
        textTypewriter.next_to(textItalic,DOWN,buff=.5)
        textBold.next_to(textTypewriter,DOWN,buff=.5)
        textSL.next_to(textBold,DOWN,buff=.5)
        textSC.next_to(textSL,DOWN,buff=.5)
        self.add(textNormal,textItalic,textTypewriter,textBold,textSL,textSC)
        self.wait(3)

  • to bring the objects closer to the edges of screen you have to modify the buff parameter.

    • .to_edge( DIRECTION, buff=NUMBER )

  • screen grid

    grid=ScreenGrid() # ScreenGrid(rows=ROWS, columns=COLUMNS)
self.add(grid,obj)

1.4 Render Setting

option fps width height
l 15 854 480
m 30 1280 720
· 60 2560 1440
  • To specify the video height use: -r HEIGHT
  • To sepcify both width,height , use: -r HEIGHT,WIDTH (caution: height first)
  • To render a video with alpha channel (with transparency) use: -t
  • Suppose your scenen is very long, then, to render only a section of the animation, you can use:
    • -n START , or, -n START,END+1
    • START to specify the command index of play,wait instruction, start from 0.
  • object type
    • Dot
    • TextMobject