Manim 学习笔记（二）--文本测试

文本测试--效果：

代码：

#-*- coding: utf-8 -*-
from manim import *
class TransformExample(Scene):
    def construct(self):
        banner = ManimBanner()
        banner.shift(UP * 0.5)
        self.play(banner.create(), run_time=1)
        self.play(banner.animate.scale(0.3), run_time=0.5)
        self.play(banner.expand(), run_time=1)

        t = Text("测试中文能否显示").next_to(banner, DOWN )
        tex = VGroup(
            Text("测试数学公式:", font_size=30),
            Tex(r"$\sum_{n=1}^\infty \frac{1}{n^2} = \frac{\pi^2}{6}$"),
        )
        tex.arrange(RIGHT, buff=SMALL_BUFF)
        tex.next_to(t, DOWN)
        self.play(Write(t), run_time=1)
        self.play(Write(tex), run_time=1)

        self.wait()
        self.clear()

        t1=Text("manim", font="Consolas", slant=ITALIC).next_to(banner, UP)
        t2=Text("数学", font="STHupo", font_size=60).next_to(banner, UP)  # 华文行楷        
        t3=Text("之旅", font="STXingkai", weight=BOLD).next_to(banner, UP)   # 华文彩云
        vg = VGroup(t1, t2, t3)
        vg.next_to(banner, UP)
        vg.arrange(RIGHT, buff=SMALL_BUFF)
        self.play(Write(vg),run_time=1)
        self.wait()
        
        t4=Text("Powred by ZJZ", t2c={"Powred": BLUE, "by": RED, "ZJZ": GREEN}, weight=BOLD)
        t4.next_to(tex, DOWN * 3)
        self.play(Write(t4),run_time=1)
        self.wait()
        self.clear()
        d1=Dot()
        label = Text("A wild circle appears!")
        label.next_to(d1, DOWN, buff=0.5)
        label2 = Text("Powered by ZJZ!")
        label2.next_to(d1, DOWN, buff=0.5)

        t5=Text('大家好')
        t6=Ellipse(color=BLUE,fill_color=WHITE,fill_opacity=0.5)
        t6.surround(t5)
        self.play(Write(t6),Write(t5))
        self.wait()
        self.clear()
        announcement = Text("Let us draw a circle.")
        
        self.play(Write(announcement))
        self.wait()
        
        self.play(announcement.animate.next_to(d1, UP, buff=0.5))
        #self.play(Create(t1))
        
        self.play(Write(label))
        self.wait()

        self.play(Transform(label, label2))
        self.wait()

        self.play(Write(announcement),Write(label))
        self.wait()
        self.clear()

        formula = MathTex(r"[z^n]f(z) = \frac{1}{2\pi i}\oint_{\gamma} \frac{f(z)}{z^{n+1}}~dz")
        self.play(Write(formula), run_time=3)
        self.wait()
        self.clear()
        
        eq1 = MathTex("42 {{ a^2 }} + {{ b^2 }} = {{ c^2 }}")
        eq2 = MathTex("42 {{ a^2 }} = {{ c^2 }} - {{ b^2 }}")
        eq3 = MathTex(r"a^2 = \frac{c^2 - b^2}{42}")
        self.add(eq1)
        self.wait()
        self.play(TransformMatchingTex(eq1, eq2))
        self.wait()
        self.play(TransformMatchingShapes(eq2, eq3))
        self.wait()
        self.clear()

        text = Text("")
        print(text.font_list())

        self.wait(1)


        self.example01()
        self.wait()
        self.clear()

        self.example02()
        self.wait()
        self.clear()

        self.example03()
        self.wait()
        self.clear()

        self.example04()

        self.wait()

    def example01(self):
        """
        字体相关设置
        """
        left = LEFT * 2.5
        title = Text("设置不同字体：", font="KaiTi", font_size=25).shift(
            LEFT * 2 + UP * 2
        )
        self.play(Write(title))

        # 不同的字体和大小
        label = Text("Hack字体：", t2f={"字体": "STLiti"}, font_size=25).shift(
            left + UP
        )
        text = Text("Hello Manim", font="Hack")
        text.next_to(label, direction=RIGHT, buff=0.5)
        self.add(label)
        self.play(Write(text))

        label = Text("STHupo字体：", t2f={"字体": "STHupo"}, font_size=25).shift(left)
        text = Text("Hello Manim", font="STHupo")
        text.next_to(label, direction=RIGHT, buff=0.5)
        self.add(label)
        self.play(Write(text))

        label = Text("STZhongsong字体：", t2f={"字体": "STZhongsong"}, font_size=25).shift(
            LEFT * 2 + DOWN
        )
        text = Text("Hello Manim", font="STZhongsong")
        text.next_to(label, direction=RIGHT, buff=0.2)
        self.add(label)
        self.play(Write(text))

    def example02(self):
        """
        显示样式相关设置
        """
        left = LEFT * 2.5
        title = Text("设置文本的样式：", font="STLiti", font_size=25).shift(
            LEFT * 2 + UP * 2
        )
        self.play(Write(title))

        label = Text("粗体：", font="STLiti", font_size=25).shift(left + UP)
        text = Text("Hello Manim", weight=BOLD)
        text.next_to(label, direction=RIGHT, buff=0.5)
        self.add(label)
        self.play(Write(text))

        label = Text("斜体：", font="STLiti", font_size=25).shift(left)
        text = Text("Hello Manim", slant=ITALIC)
        text.next_to(label, direction=RIGHT, buff=0.5)
        self.add(label)
        self.play(Write(text))

        label = Text("行间距：", font="STLiti", font_size=25).shift(left + DOWN * 1.5)
        text = Text("row1-Manim\nrow2-Manim", line_spacing=2)
        text.next_to(label, direction=RIGHT, buff=0.5)
        self.add(label)
        self.play(Write(text))

    def example03(self):
        """
        颜色相关设置
        """
        left = LEFT * 2.5
        title = Text("设置文本颜色：", font="STLiti", font_size=25).shift(
            LEFT * 2 + UP * 2
        )
        self.play(Write(title))

        label = Text("红色：", font="STLiti", font_size=25).shift(left + UP)
        text = Text("Hello Manim", color=RED)
        text.next_to(label, direction=RIGHT, buff=0.5)
        self.add(label)
        self.play(Write(text))

        label = Text("黄色：", font="STLiti", font_size=25).shift(left)
        text = Text("Hello Manim", color=YELLOW)
        text.next_to(label, direction=RIGHT, buff=0.5)
        self.add(label)
        self.play(Write(text))

        label = Text("红变蓝：", font="STLiti", font_size=25).shift(left + DOWN)
        text = Text("Hello Manim1", gradient=(RED, BLUE))
        text.next_to(label, direction=RIGHT, buff=0.5)
        self.add(label)
        self.play(Write(text))

        label = Text("蓝变绿：", font="STLiti", font_size=25).shift(left + DOWN * 2)
        text = Text("Hello Manim2", gradient=(BLUE, GREEN))
        text.next_to(label, direction=RIGHT, buff=0.5)
        self.add(label)
        self.play(Write(text))

    def example04(self):
        """
        t2* 局部设置系列
        """
        left = LEFT * 2.5
        title = Text("设置文本局部：", font="STLiti", font_size=25).shift(
            LEFT * 2 + UP * 2
        )
        self.play(Write(title))

        label = Text("两种字体：", font="STLiti", font_size=25).shift(left + UP)
        text = Text("Hello Manim", t2f={"Hello": "STLiti", "Manim": "Harrington"})
        text.next_to(label, direction=RIGHT, buff=0.5)
        self.add(label)
        self.play(Write(text))

        label = Text("粗体斜体：", font="STLiti", font_size=25).shift(left)
        text = Text("Hello Manim", t2s={"Hello": ITALIC}, t2w={"Manim": BOLD})
        text.next_to(label, direction=RIGHT, buff=0.5)
        self.add(label)
        self.play(Write(text))

        label = Text("两种颜色：", font="STLiti", font_size=25).shift(left + DOWN)
        text = Text("Hello Manim", t2c={"Hello": RED, "Manim": GREEN})
        text.next_to(label, direction=RIGHT, buff=0.5)
        self.add(label)
        self.play(Write(text))

        label = Text("两种渐变：", font="STLiti", font_size=25).shift(left + DOWN * 2)
        text = Text("Hello1 Manim2", t2g={"ello1": (RED, BLUE), "anim2": (BLUE, GREEN)})
        text.next_to(label, direction=RIGHT, buff=0.5)
        self.add(label)
        self.play(Write(text))