tkz-euclide：\tkzDrawCircle[R] 不起作用

Question

\tkzDrawArc[R,arc](B,1.1*\dBD)(20,83)效果很好。但是\tkzDrawCircle[R]不起作用……

\documentclass[border=2pt]{standalone}
\usepackage[usenames,dvipsnames,svgnames]{xcolor}
\usepackage{tkz-euclide}
\usetkzobj{all}
\definecolor{fondpaille}{cmyk}{0,0,0.1,0}
\pagecolor{fondpaille}
\color{Maroon} 

\begin{document}
\begin{tikzpicture}[scale=1.0]
\tkzDefPoint(0,0){B} 
\tkzDefPoint(0,6){A} 
\tkzDefPoint(8,0){C}
\tkzLabelPoints[below](B,C)
\tkzLabelPoints[left](A)


\tkzDrawSegment[thick](A,B)
\tkzDrawSegment[thick](C,B)
\tkzDrawSegment[thick](A,C)

\tkzDefMidPoint(B,C)\tkzGetPoint{M}
\tkzInterLC(A,C)(M,C) \tkzGetPoints{D}{E} \tkzLabelPoints[above](D)
\tkzDrawSegment[thick](B,D)
\tkzCalcLength[cm](B,D) \tkzGetLength{dBD}
\tkzDrawArc[R,arc](B,1.1*\dBD)(20,83)
\tkzDrawCircle[R](A,1.1*\dBD)
%\tkzInterLC[R](A,C)(B,1.1*\dBD) \tkzGetPoints{D_1}{D_2}
\end{tikzpicture}
\end{document}

Answer 1

该宏\tkzGetLength返回以 表示的长度pt，如果使用cm，则在调用时必须将该测量值转换为厘米。

\tkzDrawCircle[R](A,\dBD cm) 代替\tkzDrawCircle[R](A,\dBD)

此外，在传递参数期间禁止计算，以便您选择计算引擎（参见手册第 57 页）：

• pgf和\pgfsetmacro

• fp和\fpeval

  \documentclass[border=2pt]{standalone}
  \usepackage[usenames,dvipsnames,svgnames]{xcolor}
  \usepackage{tkz-euclide}
  \usetkzobj{all}
  \definecolor{fondpaille}{cmyk}{0,0,0.1,0}
  \pagecolor{fondpaille}
  \color{Maroon} 
  
  \begin{document}
  \begin{tikzpicture}[scale=1.0]
  \tkzDefPoint(0,0){B} 
  \tkzDefPoint(0,6){A} 
  \tkzDefPoint(8,0){C}
  \tkzLabelPoints[below](B,C)
  \tkzLabelPoints[left](A)
  
  
  \tkzDrawSegment[thick](A,B)
  \tkzDrawSegment[thick](C,B)
  \tkzDrawSegment[thick](A,C)
  
  \tkzDefMidPoint(B,C)\tkzGetPoint{M}
  \tkzInterLC(A,C)(M,C) \tkzGetPoints{D}{E} \tkzLabelPoints[above](D)
  \tkzDrawSegment[thick](B,D)
  \tkzCalcLength[cm](B,D) \tkzGetLength{dBD}
  \pgfmathsetmacro{\tkzLen}{1.1*\dBD}
  \tkzDrawArc[R,arc](B, \tkzLen cm)(20,83)
  \tkzDrawCircle[R](A,\dBD cm)
  \tkzInterLC[R](A,C)(B, \tkzLen cm ) \tkzGetPoints{D_1}{D_2}
  \end{tikzpicture}
  \end{document}
  

输出