mermaid与flowchart.js绘制流程图分支结构试验

近日绘制流程图时对不断修改调整流程图中节点位置感到很厌烦，想要改用代码方式来写流程图。以下试验均基于CSDN编辑器的的mermaid和flowchat支持。

用解一元二次方程的流程图做试验

  • mermaid流程图：判断后的流程线应该是从菱形的顶点处出发，这里居然是从菱形的边上出发，而且流程线不是走直角弯，不完全符合程序设计流程图的标准，没有找到如何解决。
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yes
no
yes
no
开始
结束
输入方程ax^2+bx+c=0的系数a,b,c
d=b^2-4ac
delta<0
delta=0?
输出无解
x=-b/a/2
delta_sqrt=sqrt(delta)
x1=(-b-delta_sqrt)/a/2
x2=(-b+delta_sqrt)/a/2
输出x
输出x1,x2