Graphics, Figures & Tables ⇒ tikZ | Interface between Surfaces

[psionman]

I would like to represent the interface between surfaces as a 'hatched' line.

The following code works but it looks wrong at the ends.

Code: Select all

[
  interface/.style={
    postaction={
      draw,
      decorate,
      decoration={
        border,
        angle=45,
        amplitude=0.3cm,
        segment length=3mm
      }
    }
  },
]

The ideal would be a rectangle filled with 'hatches'. The following works, but it slows down the compile drastically (because of the loop?)

Code: Select all

\tikzset{mystripes dist/.initial=0.2}
\pgfdeclarepatternformonly[/tikz/mystripes dist]{mystripes}
{\pgfpointorigin}{\pgfpoint{1cm}{1cm}}
{\pgfpoint{1cm}{1cm}}
{
  \foreach \x in {0,\pgfkeysvalueof{/tikz/mystripes dist},...,1}{
    \pgfmathsetmacro{\nx}{1-\x}
    \tikz[overlay]\draw[decoration = {random steps, segment length = 0.2mm, amplitude = 0.15pt}, decorate] (\x, 0) -- ++(\nx,\nx);
    \tikz[overlay]\draw[decoration = {random steps, segment length = 0.2mm, amplitude = 0.15pt}, decorate] (0, \x) -- ++(\nx,\nx);
  }
}

What can I do?

[localghost]

[…] What can I do?

As always, start with providing a minimal example to give an adequate problem description.


Thorsten

[psionman]

Here is the document

It includes two problems:

1. slow compile if multiple

Code: Select all

\filldraw[draw=white,color=black, pattern=mystripes]

are used.

2. I do not want the box around the rectangle

Code: Select all

\documentclass[11pt]{article}

\usepackage{tikz}
\usetikzlibrary{%
    decorations.pathreplacing,%
    decorations.pathmorphing,%
	patterns%
}

\begin{document}
\tikzset{mystripes dist/.initial=0.2}
\pgfdeclarepatternformonly[/tikz/mystripes dist]{mystripes}
{\pgfpointorigin}{\pgfpoint{1cm}{1cm}}
{\pgfpoint{1cm}{1cm}}
{
  \foreach \x in {0,\pgfkeysvalueof{/tikz/mystripes dist},...,1}{
    \pgfmathsetmacro{\nx}{1-\x}
    \tikz[overlay]\draw[decoration = {random steps, segment length = 0.2mm, amplitude = 0.15pt}, decorate] (\x, 0) -- ++(\nx,\nx);
    \tikz[overlay]\draw[decoration = {random steps, segment length = 0.2mm, amplitude = 0.15pt}, decorate] (0, \x) -- ++(\nx,\nx);
  }
}

\begin{figure}[ht]
\begin {center}
\begin{tikzpicture}
[
interfacetop/.style={
        postaction={draw,decorate,decoration={border,angle=135,
                    amplitude=0.4cm,segment length=2mm}}},
]

\coordinate (AL) at (0,8);
\coordinate (AR) at (3,8);
\coordinate (BL) at (0,7);
\coordinate (BR) at (4,7);
\draw[interfacetop](AL)--(AR);


\draw (BL)--(BR);
\filldraw[draw=white,color=black, pattern=mystripes] (BL)   rectangle (3,7.4);
\end{tikzpicture}
\end{center}
\end{figure}

\end{document}

[hugovdberg]

You might want to take al look at the answers on {TeX} SE seems a pretty solution to me. If you don't want the ticks to extend beyond the ends of the straight line you could throw in a 'pre length' or 'post length' which creates an offset for the decoration.

[psionman]

Thanks hugovdberg. That's a useful link. It's doing more or less what my 'interface' style does. It is acceptable, but not ideal. You're right, the problem occurs at the ends of the line. At one end the sloping line extends beyond the length of the base, and at the other, there should (or could) be shorter, partial sloping lines to fill the space.