很早以前我就了解到了使用typora可以画图这件事，应该说是当我知道typora这个软件时，很大一部分程序上，typora这款软件极大的方便了我记录自己的学习笔记，发博客等，通过picGo，我可以方便快捷的使用github的免费存储空间。同时，我可以更快捷方便的通过hexo来发布我编辑的文章到我的博客。而当我了解到typora画图之后，似乎我又发现了新大陆，借此记录了自己学习typora画图的一些语法以及技巧，使用体验真的很好的画图软件——typora

1.流程图

2.时序图

3.状态图

4.类图

5.甘特图

流程图

语法解释：graph 关键字就是声明一张流程图，TD 表示的是方向，这里的含义是 Top-Down 由上至下。

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graph LR;
	a["起点!"]==粗线带文字==>b;
	b{菱形节点}-->c;
	a-.-虚线带文字-.->d((具有圆边的节点));
	b---|不带箭头的线|e;
	e--带箭头的线-->f;
	c>非对称形状]-->e;
	d--实现特殊字符-->g["特殊字符:#9829;"];
	style a fill:lightblue,stroke:black,stroke-width:4px

子图的语法规范

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graph TB
    c1-->a2
    b1 --> a
    subgraph one
    a1-->a2
    end
    subgraph two
    b1-->b2
    end
    subgraph three
    c1-->c2
    end

样式链接

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graph LR
    id1(Start)-->id2(Stop)
    style id1 fill:#f9f,stroke:#333,stroke-width:4px
    style id2 fill:#ccf,stroke:#f66,stroke-width:2px,stroke-dasharray: 5, 5

fontawesome

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graph TD
    B["fa:fa-twitter 和平"]
    B-->C[fa:fa-ban 禁止]
    B-->D(fa:fa-spinner);
    B-->E(A fa:fa-camera-retro 也许?);

时序图

语法解释：->> 代表实线箭头，-->> 则代表虚线。

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sequenceDiagram
	Alice->>Jhon: 你好啊！
	activate Jhon
	Jhon-->>+Alice: 你好，最近怎么样！
	deactivate Jhon	
	Alice->>-Jhon: 挺好的，学了Typora画图，你呢？
	loop every minute
		note over Alice,Jhon:数秒之后~~~
	end
	par Jhon思考时间
		rect rgb(100,215,180)
			Jhon-->>Jhon: 心理活动，我要不要也学一学#9829;
		end
	end

一些比较复杂的时序图：

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sequenceDiagram
    Alice ->> Bob: Hello Bob, how are you?
    Bob-->>John: How about you John?
    Bob--x Alice: I am good thanks!
    Bob-x John: I am good thanks!
    Note right of John: Bob thinks a long<br/>long time, so long<br/>that the text does<br/>not fit on a row.
	Note left of Alice: what does he think about?
    Bob-->Alice: Checking with John...
    Alice->John: Yes... John, how are you?

状态图

语法解释：[*] 表示开始或者结束，如果在箭头右边则表示结束。

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stateDiagram
	[*]--> s1
	s1-->s2
	s2-->[*]

类图

语法解释：<|-- 表示继承，+ 表示 public，- 表示 private，学过 Java 的应该都知道。

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classDiagram
      Animal <|-- Duck
      Animal <|-- Fish
      Animal <|-- Zebra
      Animal : +int age
      Animal : +String gender
      Animal: +isMammal()
      Animal: +mate()
      class Duck{
          +String beakColor
          +swim()
          +quack()
      }
      class Fish{
          -int sizeInFeet
          -canEat()
      }
      class Zebra{
          +bool is_wild
          +run()
      }

甘特图

甘特图一般用来表示项目的计划排期，目前在工作中经常会用到。

语法也非常简单，从上到下依次是图片标题、日期格式、项目、项目细分的任务。

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gantt
    title 工作计划 3.8~3.12
    dateFormat YYYY-MM-DD
    excludes weekends
    section 运控项目
    Completed task            :done,    des1, 2021-03-06,2021-03-09
    Active task               :active,  des2, 2021-03-09, 3d
    Future task               :crit,     des3, after des2, 5d
    Future task2              :         des4, after des3, 5d
    section  站控项目
    实现弹出式消息框		:a1, 2021-03-01, 2d
    继续下一项目			  :after a1, 2d
    section Documentation
    Describe gantt syntax               :active, a1, after des1, 3d
    Add gantt diagram to demo page      :after a1  , 20h
    Add another diagram to demo page    :doc1, after a1  , 48h

甘特图简单用法：

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gantt
       apple :a, 2017-07-20, 30d
       banana :crit, b, 2017-07-23, 1d
       cherry :active, c, after b a, 1d

关于甘特图的input和output的format

在甘特图中有两个属性一个为dateFormat，用以控制甘特图时间的输入；另一个为axisFormat，用以控制甘特图输出时间的格式，两者均可以根据下边两个表来实现自定义的时间格式。

以下为input的dateFormat：

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Input       Example             Description:
YYYY        2014                4 digit year
YY          14                  2 digit year
Q           1..4                Quarter of year. Sets month to first month in quarter.
M MM        1..12               Month number
MMM MMMM    January..Dec        Month name in locale set by moment.locale()
D DD        1..31               Day of month
Do          1st..31st           Day of month with ordinal
DDD DDDD    1..365              Day of year
X           1410715640.579      Unix timestamp
x           1410715640579       Unix ms timestamp
H HH        0..23               24 hour time
h hh        1..12               12 hour time used with a A.
a A         am pm               Post or ante meridiem
m mm        0..59               Minutes
s ss        0..59               Seconds
S           0..9                Tenths of a second
SS          0..99               Hundreds of a second
SSS         0..999              Thousandths of a second
Z ZZ        +12:00              Offset from UTC as +-HH:mm, +-HHmm, or Z

Example：

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dateFormat YYYY-MM-DD

这个是output的axisFormat：

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%a - abbreviated weekday name.
%A - full weekday name.
%b - abbreviated month name.
%B - full month name.
%c - date and time, as "%a %b %e %H:%M:%S %Y".
%d - zero-padded day of the month as a decimal number [01,31].
%e - space-padded day of the month as a decimal number [ 1,31]; equivalent to %_d.
%H - hour (24-hour clock) as a decimal number [00,23].
%I - hour (12-hour clock) as a decimal number [01,12].
%j - day of the year as a decimal number [001,366].
%m - month as a decimal number [01,12].
%M - minute as a decimal number [00,59].
%L - milliseconds as a decimal number [000, 999].
%p - either AM or PM.
%S - second as a decimal number [00,61].
%U - week number of the year (Sunday as the first day of the week) as a decimal number [00,53].
%w - weekday as a decimal number [0(Sunday),6].
%W - week number of the year (Monday as the first day of the week) as a decimal number [00,53].
%x - date, as "%m/%d/%Y".
%X - time, as "%H:%M:%S".
%y - year without century as a decimal number [00,99].
%Y - year with century as a decimal number.
%Z - time zone offset, such as "-0700".
%% - a literal "%" character.

Example:

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axisFormat  %Y-%m-%d