Take the 2-minute tour ×
TeX - LaTeX Stack Exchange is a question and answer site for users of TeX, LaTeX, ConTeXt, and related typesetting systems. It's 100% free, no registration required.

I need to make a very simple cone with h and r (like the picture I've uploaded as example) and I can't find it in previous questions.

Simple cone

share|improve this question
    
Related Question: TikZ: inverted cone. –  Peter Grill Jun 22 at 22:31

2 Answers 2

With arc

 \documentclass[tikz,border=10pt]{standalone}
\usetikzlibrary{calc}
\begin{document}
  \begin{tikzpicture}
    \draw[dashed] (0,0) arc (170:10:2cm and 0.4cm)coordinate[pos=0] (a);
    \draw (0,0) arc (-170:-10:2cm and 0.4cm)coordinate (b);
    \draw[densely dashed] ([yshift=4cm]$(a)!0.5!(b)$) -- node[right,font=\footnotesize] {$h$}coordinate[pos=0.95] (aa)($(a)!0.5!(b)$)
                            -- node[above,font=\footnotesize] {$r$}coordinate[pos=0.1] (bb) (b);
    \draw (aa) -| (bb);
    \draw (a) -- ([yshift=4cm]$(a)!0.5!(b)$) -- (b);
  \end{tikzpicture}
\end{document}

enter image description here

With ellipse

\documentclass[tikz,border=10pt]{standalone}
\usetikzlibrary{calc}
\begin{document}
  \begin{tikzpicture}
    \begin{scope}
     \clip (-2,0) rectangle (2,1cm);
    \draw[dashed] (0,0) circle(2cm and 0.35cm);
    \end{scope}
    \begin{scope}
     \clip (-2,0) rectangle (2,-1cm);
    \draw (0,0) circle(2cm and 0.35cm);
    \end{scope}
    \draw[densely dashed] (0,4) -- node[right,font=\footnotesize] {$h$}coordinate[pos=0.95] (aa)(0,0)
                            -- node[above,font=\footnotesize] {$r$}coordinate[pos=0.1] (bb) (2,0);
    \draw (aa) -| (bb);
    \draw (-2,0) -- (0,4) -- (2,0);
  \end{tikzpicture}
\end{document}

enter image description here

Gonzalo has kindly provided the shadings to the cylinder and I am reproducing his code (with thanks):

\documentclass{article}
\usepackage{tikz}
\usetikzlibrary{shadings}

\begin{document}

\begin{tikzpicture}
\fill[
  top color=gray!50,
  bottom color=gray!10,
  shading=axis,
  opacity=0.25
  ] 
  (0,0) circle (2cm and 0.5cm);
\fill[
  left color=gray!50!black,
  right color=gray!50!black,
  middle color=gray!50,
  shading=axis,
  opacity=0.25
  ] 
  (2,0) -- (0,6) -- (-2,0) arc (180:360:2cm and 0.5cm);
\draw 
  (-2,0) arc (180:360:2cm and 0.5cm) -- (0,6) -- cycle;
\draw[dashed]
  (-2,0) arc (180:0:2cm and 0.5cm);
\draw[dashed]
  (2,0) -- node[below] {$r$} (0,0) -- node[left] {h} (0,6) ;
\draw 
  (0,8pt) -- ++(8pt,0) -- (8pt,0);   
\end{tikzpicture}

\end{document}

enter image description here

share|improve this answer
    
Since you answered providing two options, perhaps you could add a new option with shadings as in my answer? I see no point in giving almost the same code in two different answers. –  Gonzalo Medina Apr 13 at 1:47
    
@GonzaloMedina Thanks and I used your code as such as I felt that it is good. thank you. –  Harish Kumar Apr 13 at 15:12

Just for fun with PSTricks.

\documentclass[pstricks,border=12pt,12pt]{standalone}
\usepackage{pst-node}
\begin{document}
\begin{pspicture}[dimen=m](8,10)
    \psellipticarc[linestyle=dashed](4,1)(4,.65){0}{180}
    \psellipticarcn(4,1)(4,.65){0}{180}
    \psline[linecap=0](0,1)(4,10)(8,1)
    \pcline[linestyle=dashed](4,10)(4,1)\naput{$h$}
    \pcline[linestyle=dashed](4,1)(8,1)\naput{$r$}
    \rput(4,1){\psline(0,9pt)(9pt,9pt)(9pt,0)}
\end{pspicture}
\end{document}

enter image description here

share|improve this answer

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.