Text and math¶

manimgx sets text and formulas itself, with Typst and fonts that come with it. You don't install LaTeX or fonts, and your text looks the same on every computer.

Text¶

m.Text shows text exactly as you write it. A new line (\n) starts a new line:

import manimgx as m


class Words(m.Scene):
    def construct(self) -> None:
        title = m.Text("The Pythagorean theorem", font_size=64)
        note = m.Text("for a right triangle", font_size=36, color=m.GREY_B)
        note.next_to(title, m.DOWN)
        self.play(m.Write(title))
        self.play(m.FadeIn(note))

• font_size sets the size: 48 unless you give another.
• font sets the font: "sans-serif", "monospace", or the name of a font on your computer. The default is New Computer Modern, the font of LaTeX.
• t2c colors parts of the text: m.Text("red and blue", t2c={"red": m.RED, "blue": m.BLUE}).

Text is a mobject like any other: you can move it, scale it, color it and animate it.

Formulas¶

m.MathTex shows a formula, written in LaTeX math. Write it in a raw string, r"...", so that Python keeps its backslashes:

import manimgx as m


class Formula(m.Scene):
    def construct(self) -> None:
        formula = m.MathTex(r"\int_0^1 x^2 \, dx = \frac{1}{3}", font_size=72)
        self.play(m.Write(formula))

Fractions, roots, sums and integrals, matrices, cases, Greek letters, \mathbb and \text work. LaTeX packages and \def don't. If manimgx doesn't know a command, its error names the command.

m.Tex is for text with math in it: m.Tex(r"The area is $\pi r^2$.").

Parts of a formula¶

Give m.MathTex several strings, and each one becomes a part that you can color or animate on its own. formula[2] is the third part:

import manimgx as m


class Parts(m.Scene):
    def construct(self) -> None:
        formula = m.MathTex("a^2", "+", "b^2", "=", "c^2", font_size=96)
        formula[2].set_color(m.YELLOW)
        self.play(m.Write(formula))
        self.play(m.Indicate(formula[2]))

Change a formula into another¶

m.TransformMatchingTex moves each part of a formula to the part with the same LaTeX in another formula. The parts that don't match fade out and in:

import manimgx as m


class Rearrange(m.Scene):
    def construct(self) -> None:
        before = m.MathTex("a^2", "+", "b^2", "=", "c^2", font_size=96)
        after = m.MathTex("a^2", "=", "c^2", "-", "b^2", font_size=96)
        before[2].set_color(m.YELLOW)
        after[4].set_color(m.YELLOW)
        self.play(m.Write(before))
        self.play(m.TransformMatchingTex(before, after))
        self.wait()

Numbers¶

m.DecimalNumber(3.14) shows a number. Its set_value shows a different one in its place, so a number can count up or down as a scene plays: Updaters shows how.

Typst¶

If you know Typst, write in it directly: m.Typst takes Typst markup, and m.MathTypst a formula in Typst's math syntax.

m.Typst("*Bold*, _italic_, and math: $sum_(k=1)^n k = (n(n+1))/2$")

Next¶

Graphs shows how to draw axes and plot functions, with labels.