2021-08-03 11:03:36 +08:00
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# VSCode+Markdown+UML
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首先 VSCode 安装 Markdown Preview Enhanced (Yiyi Wang) 插件。
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然后对 Markdown 文件可使用 Ctrl+k,v 进行预览。
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## 1.流程图
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```flow
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sta=>start: 开始
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e=>end: 结束
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op=>operation: 操作(处理块)
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sub=>subroutine: 子程序
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cond=>condition: 是或者不是(条件判断)?
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cond2=>condition: 第二个判断(条件判断)?
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io=>inputoutput: 输出
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sta->op->cond
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cond(yes)->e
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cond(no)->cond2
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cond2(yes,right)->sub(left)-op
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cond2(no)->io(lef)->e
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```
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### 1.1.语法
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#### 1.1.1.关键字
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1. start, end:表示该流程图中的开始与结束。
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2. operation:表示该流程图中的处理块。
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3. subroutine:表示该流程图中的子程序块。
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4. condition:表示该流程图中的条件判断。
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5. inputoutput:表示该流程图中的输入输出。
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6. right, left:表示该流程图中当前模块下一个箭头的指向(默认箭头指向下方)。
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7. yes, no:表示该流程图中条件判断的分支(默认yes箭头向下no箭头向右;yes与no可以和right同时使用;yes箭头向右时,no箭头向下)
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8. URL:e=>点击本结束跳转:><http://https://segmentfault.com/blog/ingood>
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#### 1.1.2.各模块之间的联系
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基本形式:
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```blk
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模块标识=>模块关键字: 模块模块名称
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```
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连接定义:
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```blk
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模块标识1->模块标识2
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模块标识1->模块标识2->模块标识3
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... ...
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```
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1. *通过模块与连接定义,可以组成一个完整的流程图。*
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2. *在模块定义中,模块标识与模块名称可以自定义,模块关键字不可以自定义!*
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## 2.序列图
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```sequence
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title: 三个臭皮匠的故事
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participant 小王
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participant 小李
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participant 小异常
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note left of 小王: 我是小王
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note over 小李: 我是小李
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note right of 小异常: 大家好!\n我是小异常
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小王->小王: 小王想:今天要去见两个好朋友咯~
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小王->小李: 嘿,小李好久不见啊~
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小李-->>小王: 是啊
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小李->小异常: 小异常,你好啊
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小异常-->小王: 哈,小王!\n最近身体怎么样了?
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小王->>小异常: 还可以吧
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```
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### 2.1.语法
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#### 2.1.1.关键字
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1. title:表示该序列图中的标题。
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2. participant:表示该序列图中的对象。
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3. note:表示该序列图中的部分说明。
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关于 note 以下三种关键字:
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* left of:表示在当前对象的左侧。
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* right of:表示在当前对象的右侧。
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* over:表示覆盖在当前对象的上方。
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#### 2.1.2.箭头
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1. ->:实线实箭头
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2. –>:虚线实箭头
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3. ->>:实线虚箭头
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4. –>>:虚线虚箭头
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#### 2.1.3.换行
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如果当前行中的文字过多想要换行,可以使用 \n 进行转义换行,效果如以上例子。
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## 3.Mermaid 甘特图
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```mermaid
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gantt
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title 甘特图
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dateFormat YYYY-MM-DD
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section 行1
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任务1 :a1, 2014-01-01, 30d
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任务2 :after a1 , 20d
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section 行2
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任务3 :2014-01-12 , 12d
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任务4 : 24d
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```
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## 4.Mermaid 类图
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2021-08-03 11:22:47 +08:00
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```mermaid
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2021-08-03 11:03:36 +08:00
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classDiagram
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Class01 <|-- AveryLongClass : Cool
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Class03 *-- Class04
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Class05 o-- Class06
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Class07 .. Class08
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Class09 --> C2 : Where am i?
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Class09 --* C3
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Class09 --|> Class07
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Class07 : equals()
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Class07 : Object[] elementData
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Class01 : size()
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Class01 : int chimp
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Class01 : int gorilla
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Class08 <--> C2: Cool label
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```
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2021-08-03 11:33:11 +08:00
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### 4.1.语法
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#### 4.1.1.泛化(Generalization)
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继承、子类与父类
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```mermaid
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classDiagram
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A<|--B
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A:+int doing
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A:+Can()
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B:+flying()
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```
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#### 4.1.2.实现(Realization)
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```mermaid
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classDiagram
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class IFlyable{
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<<interface>>
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+ flying()
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}
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IFlyable<|..Bat
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Bat:+flying()
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```
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#### 4.1.3.组合(Composition)
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```mermaid
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classDiagram
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Computer *-- CPU
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Computer *-- Mainboard
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Computer *-- HardDisk
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Computer *-- MemeryCard
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```
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#### 4.1.4.聚合(Aggregation)
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```mermaid
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classDiagram
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Company o-- Empolyee0
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Company o-- Empolyee1
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```
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#### 4.1.5.关联(Association)
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```mermaid
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classDiagram
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Reader "1..*" -- "1..*" Book
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Book "1..*"--> "1"Author
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```
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#### 4.1.6.依赖(Dependency)
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```mermaid
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classDiagram
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Animal..>Food
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```
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2021-08-11 09:30:58 +08:00
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## 5.Mermaid 流程图
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### 5.1.横向流程图
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```mermaid
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2021-08-04 11:19:58 +08:00
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flowchart LR
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A[方形] --> B(圆角)
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B --> C{条件a}
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C --> |a=1| D[结果1]
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C --> |a=2| D[结果2]
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F[横向流程图]
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```
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2021-08-11 09:30:58 +08:00
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### 5.2.纵向流程图
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```mermaid
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flowchart TD
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A[方形] --> B(圆角)
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B --> C{条件a}
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C --> D[结果1]
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C --> E[结果2]
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subgraph F[F]
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direction TB
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G[纵向流程图]
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end
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2021-08-03 11:03:36 +08:00
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```
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2021-08-11 09:30:58 +08:00
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### 5.3.超大流程图样例
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```mermaid
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graph TB
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sq[Square shape] --> ci((Circle shape))
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subgraph A
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od>Odd shape]-- Two line<br/>edge comment --> ro
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di{Diamond with <br/> line break} -.-> ro(Rounded<br>square<br>shape)
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di==>ro2(Rounded square shape)
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end
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%% Notice that no text in shape are added here instead that is appended further down
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e --> od3>Really long text with linebreak<br>in an Odd shape]
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%% Comments after double percent signs
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e((Inner / circle<br>and some odd <br>special characters)) --> f(,.?!+-*ز)
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cyr[Cyrillic]-->cyr2((Circle shape Начало));
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classDef green fill:#9f6,stroke:#333,stroke-width:2px;
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classDef orange fill:#f96,stroke:#333,stroke-width:4px;
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class sq,e green
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class di orange
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```
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## 6.Mermaid 时序图
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```mermaid
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sequenceDiagram
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participant Alice
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participant Bob
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Alice->John:Hello John, how are you?
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loop Healthcheck
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John->John:Fight against hypochondria
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end
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Note right of John:Rational thoughts <br/>prevail...
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John-->Alice:Great!
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John->Bob: How about you?
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Bob-->John: Jolly good!
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```
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2021-08-04 11:19:58 +08:00
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2021-08-11 09:30:58 +08:00
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## 7.Mermaid 状态图
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```mermaid
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stateDiagram-v2
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[*] --> Still
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Still --> [*]
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Still --> Moving
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Moving --> Still
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Moving --> Crash
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Crash --> [*]
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```
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## 8.Entity Relationship Diagrams
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```mermaid
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erDiagram
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CUSTOMER ||--o{ ORDER : places
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ORDER ||--|{ LINE-ITEM : contains
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CUSTOMER }|..|{ DELIVERY-ADDRESS : uses
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```
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## 9.User Journey Diagram
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```mermaid
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journey
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title My working day
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section Go to work
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Make tea: 5: Me
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Go upstairs: 3: Me
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Do work: 1: Me, Cat
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section Go home
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Go downstairs: 5: Me
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Sit down: 5: Me
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```
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## 10.Pie chart diagrams
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```mermaid
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pie title Pets adopted by volunteers
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"Dogs" : 386
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"Cats" : 85
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"Rats" : 15
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```
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## 11.Requirement Diagram
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```mermaid
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requirementDiagram
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requirement test_req {
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id: 1
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text: the test text.
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risk: high
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verifymethod: test
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}
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element test_entity {
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type: simulation
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}
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test_entity - satisfies -> test_req
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```
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## 12.外部参考资料
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1. [About Mermaid](https://mermaid-js.github.io/mermaid/#/)
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