一：安裝Graphviz

1.下載

百度雲盤：pan.baidu.com/s/1EfxDf50p…

官網：www.graphviz.org/download/

2.安裝

建議預設安裝路徑

3.配置環境變數

將Graphviz的bin目錄加入path，我的是C:\Program Files (x86)\Graphviz2.38\bin。開啟命令列視窗，執行dot -version，能顯示相關資訊表示安裝成功

4.測試

雙擊bin目錄下的gvedit.exe

新建一個檔案File-New

文字里面輸入

digraph startgame {
    edge [fontname="FangSong"] node [shape=box, fontname="FangSong" size="20,20"]
    label="遊戲資源更新流程" fontname="FangSong"
    rankdir="TB"
    start[label="啟動遊戲" shape=circle style=filled]
    ifwifi[label="網路環境判斷是否 WIFI" shape=diamond]
    needupdate[label="是否有資源需要更新" shape=diamond]
    startslientdl[label="靜默下載" shape=box]
    enterhall[label="進入遊戲大廳" shape=box]

    enterroom[label="進入房間" shape=box]
    resourceuptodate[label="資源不完整" shape=diamond]
    startplay[label="正常遊戲" shape=circle fillcolor=blue]
    warning[label="提醒玩家是否更新" shape=diamond]
    startdl[label="進入下載介面" shape=box]
    //{rank=same; needupdate, enterhall}

    {shape=diamond; ifwifi, needupdate}

    start -> ifwifi
    ifwifi->needupdate[label="是"]
    ifwifi->enterhall[label="否"]
    needupdate->startslientdl[label="是"]
    startslientdl->enterhall
    needupdate->enterhall[label="否"]

    enterhall -> enterroom
    enterroom -> resourceuptodate
    resourceuptodate -> warning[label="是"]
    resourceuptodate -> startplay[label="否"]
    warning -> startdl[label="確認下載"]
    warning -> enterhall[label="取消下載"]
    startdl -> enterhall[label="取消下載"]
    startdl -> startplay[label="下載完成"]
}
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