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matael/tp4.tex

Created March 15, 2015 12:31
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tp4.tex
\begin{tikzpicture}[>=stealth]
\def\r{.3};
\def\M{1.5};
% hp
\draw (0,-.3) rectangle (.2,.3);
\draw (.2,-.3) -- ++(.2,-.2) -- ++(0,1) -- ++(-.2,-.2);
% wavefront
\draw[->] (.8,0) -- ++(.7,0);
\draw (1.1,-.2) -- ++(0,.4) node[above] {$\overrightarrow{k}$};
\draw (1.2,-.2) -- ++(0,.4);
% cylinder
\draw (3,-2) rectangle (3+2*\r,3);
\draw[dashed,<-] (3+\r,-4) node[right] {$z$} -- ++(0,8); % z axis
\draw[dashed, ->] (4,0) -- ++(-2,0) node[above] {$x$};
\draw[<->] (3+\r, 3.5) -- ++(\r,0) node[midway,above] {$a$};
\draw[dashed] (3+2*\r,3) -- ++(0,.7);
% absorbing material
\draw[pattern=north east lines] (0,-3) rectangle (6,-2.5);
\foreach \i in {1,...,20} \draw (\i*.3,-3) -- (.3*\i-.3,-3.2);
% M point
\draw (3+\r+\M,0) node {$\bullet$} node[above] {$M$};
% above-viewed
\begin{scope}[shift={(7,0)}]
% hp
\draw (0,-.3) rectangle (.2,.3);
\draw (.2,-.3) -- ++(.2,-.2) -- ++(0,1) -- ++(-.2,-.2);
% wavefront
\draw[->] (.8,0) -- ++(.7,0);
\draw (1.1,-.2) -- ++(0,.4) node[above] {$\overrightarrow{k}$};
\draw (1.2,-.2) -- ++(0,.4);
\draw (3+\r,0) circle (\r);
\draw[dashed,<-] (3+\r,-4) node[right] {$y$} -- (\r+3,2); % z axis
\draw[dashed, ->] (4,0) -- ++(-2,0) node[near end, above] {$x$};
% M point
\draw[dotted, thick] (3+\r,0) circle (\M);
\draw[dashed] (3+\r,0) -- ++(37:\M) node {$\bullet$} node[near end,left] {$r$} node[above] {$M$};
\end{scope}
\end{tikzpicture}
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