TeX - LaTeX Asked on September 30, 2021
I am making a figure representing a magnetic-core memory. First, I have difficulty in positioning the arcs that represent the electromagnetic currents. I made two tkzfigures and put the second one over the first, but the effect was not good.
Second, I would like the magnetization directions of the to be random, that is, some clockwise (rotate = 135) and others counterclockw (rotate = -135).
newcommand{DrawCore}[2]{
node [draw, cylinder, cylinder uses custom fill, cylinder body fill=white, shape aspect=4, rotate=135, minimum width=2cm, line width=0.5mm] (c1) at
(#1*3+0,#2*3+0){};
node [draw, ellipse, minimum width=1.4cm, rotate=-135, line width=0.5mm] (c1) at (3*#1-0.4,3*#2+0.35){};
draw [line width=0.5mm] (#1*3-1.9,#2*3+0.4) -- (#1*3-0.255,#2*3+0.4);
draw [line width=0.5mm] (#1*3+0.65,#2*3+0.4) -- (#1*3+1.2,#2*3+0.4);
draw [line width=0.5mm] (#1*3-0.4,#2*3+1.4) -- (#1*3-0.4,#2*3+0.1);
draw [line width=0.5mm] (#1*3-0.4,#2*3-0.65) -- (#1*3-0.4,#2*3-1.6);
}
begin{tikzpicture}[scale=0.5, transform shape]
foreach x [count = xi] in {0, ..., 7}{
foreach y [count = yi] in {0, ..., 7}{
draw [-latex, thick, rotate=135] ({-2.2*xi+2.2*(yi)}, {+2.2*xi+2.2*(yi)}) arc [start angle=190, end angle=-160, x radius=0.8cm, y radius=1.4cm];
}
}
end{tikzpicture}
begin{tikzpicture}[overlay, remember picture,scale=0.5, transform shape]
foreach x [count = xi] in {0, ..., 7}{
foreach y [count = yi] in {0, ..., 7}{
DrawCore{xi}{yi};
}
}
Here is my attempt for the first part of your request:
documentclass[border=1cm]{standalone}
usepackage{tikz}
usetikzlibrary{shapes.geometric}
begin{document}
newcommand{DrawCore}[2]{
begin{scope}[rotate around={135:(#1,#2)}]
node [draw, cylinder, cylinder uses custom fill, cylinder body fill=white, shape aspect=4, rotate=0, minimum width=2cm, line width=0.5mm] (c1) at
(#1,#2){};
node [draw, ellipse, minimum width=0.5cm,minimum height=1.4cm, rotate=0, line width=0.5mm] (c2) at (c1.top-|c1.before top){};
draw[-latex,red] (c1.85|-c1.105) to[bend right=25] (c1.275|-c1.255);
end{scope}
draw [line width=0.5mm] (#1-1.9,#2+0.4) -- (#1-0.255,#2+0.4);
draw [line width=0.5mm] (#1+0.65,#2+0.4) -- (#1+1.2,#2+0.4);
draw [line width=0.5mm] (#1-0.4,#2+1.4) -- (#1-0.4,#2+0.1);
draw [line width=0.5mm] (#1-0.4,#2-0.65) -- (#1-0.4,#2-1.6);
}
begin{tikzpicture}[scale=0.5, transform shape]
foreach x [count = xi] in {0,3,...,12}{
foreach y [count = yi] in {0,3,...,12}{
DrawCore{x}{y};
}
}
end{tikzpicture}
end{document}
which yields
I've slightly modified your code and used nodes anchors (c1 and c2).
Update: To draw arrows with different directions, you can check at each case if the position is odd or even using:
ifodd <integer> <TeX code 1> [else <TeX code 2>] fi
Here is the corresponding code in this case:
documentclass[border=1cm]{standalone}
usepackage{tikz}
usetikzlibrary{shapes.geometric}
usepackage{ifthen}
begin{document}
newcommand{DrawCore}[3]{
begin{scope}[rotate around={135:(#1,#2)}]
node [draw, cylinder, cylinder uses custom fill, cylinder body fill=white, shape aspect=4, minimum width=2cm, line width=0.5mm] (c1) at
(#1,#2){};
node [draw, ellipse, minimum width=0.5cm,minimum height=1.4cm, rotate=0, line width=0.5mm] (c2) at (c1.top-|c1.before top){};
% Odd or even: choose arrow direction
ifodd #3 draw[-latex,red] (c1.85|-c1.105) to[bend right=25] (c1.275|-c1.255);
[else
draw[latex-,red] (c1.85|-c1.105) to[bend right=25] (c1.275|-c1.255);]fi
end{scope}
draw [line width=0.5mm] (#1-1.9,#2+0.4) -- (#1-0.255,#2+0.4);
draw [line width=0.5mm] (#1+0.65,#2+0.4) -- (#1+1.2,#2+0.4);
draw [line width=0.5mm] (#1-0.4,#2+1.4) -- (#1-0.4,#2+0.1);
draw [line width=0.5mm] (#1-0.4,#2-0.65) -- (#1-0.4,#2-1.6);
}
begin{tikzpicture}[scale=0.5, transform shape]
foreach x [count = xi] in {0,3,...,12}{
foreach y [count = yi,evaluate=y as z using int( xi+yi )] in {0,3,...,12}{
DrawCore{x}{y}{z};
}
}
end{tikzpicture}
end{document}
you get the following result:
If you would like to rotate the shape, here is the corresponding code:
documentclass[border=1cm]{standalone}
usepackage{tikz}
usetikzlibrary{shapes.geometric}
usepackage{ifthen}
begin{document}
newcommand{DrawCore}[3]{
ifodd #3
begin{scope}[rotate around={135:(#1,#2)}]
node [draw, cylinder, cylinder uses custom fill, cylinder body fill=white, shape aspect=4, minimum width=2cm, line width=0.5mm] (c1) at
(#1,#2){};
node [draw, ellipse, minimum width=0.5cm,minimum height=1.4cm, rotate=0, line width=0.5mm] (c2) at (c1.top-|c1.before top){};
draw[-latex,red] (c1.85|-c1.105) to[bend right=25] (c1.275|-c1.255);
end{scope}
draw [line width=0.5mm] (#1-1.9,#2+0.4) -- (#1-0.255,#2+0.4);
draw [line width=0.5mm] (#1+0.65,#2+0.4) -- (#1+1.2,#2+0.4);
draw [line width=0.5mm] (#1-0.4,#2+1.4) -- (#1-0.4,#2+0.1);
draw [line width=0.5mm] (#1-0.4,#2-0.65) -- (#1-0.4,#2-1.6);
[else
begin{scope}[yshift=0.5cm]
begin{scope}[rotate around={-135:(#1,#2)}]
node [draw, cylinder, cylinder uses custom fill, cylinder body fill=white, shape aspect=4, minimum width=2cm, line width=0.5mm] (c1) at
(#1,#2){};
node [draw, ellipse, minimum width=0.5cm,minimum height=1.4cm, rotate=0, line width=0.5mm] (c2) at (c1.top-|c1.before top){};
draw[latex-,red] (c1.85|-c1.105) to[bend right=25] (c1.275|-c1.255);
end{scope}
end{scope}
draw [line width=0.5mm] (#1-1.9,#2+0.4) -- (#1-0.4,#2+0.4);
draw [line width=0.5mm] (#1+0.5,#2+0.4) -- (#1+1.2,#2+0.4);
draw [line width=0.5mm] (#1-0.4,#2+1.4) -- (#1-0.4,#2+1.2);
draw [line width=0.5mm] (#1-0.4,#2+0.4) -- (#1-0.4,#2-1.6);
]fi
}
begin{tikzpicture}[scale=0.5, transform shape]
foreach x [count = xi] in {0,3,...,12}{
foreach y [count = yi,evaluate=y as z using int( xi+yi )] in {0,3,...,12}{
DrawCore{x}{y}{z};
}
}
end{tikzpicture}
end{document}
Answered by LaTeXdraw-com on September 30, 2021
LaTeXdraw-com, the result of your code is really pretty beautiful. The rotation of the cores also improved a lot and made the illustration closer to the physical implementation of magnetic core memories. I made a small change over your code so that the direction of the magnetic flow of a core is determined randomly and not according to their position, since the direction indicates whether the core's content is 1 or 0. Thanks again!
documentclass[border=1cm]{standalone}
usepackage{tikz}
usetikzlibrary{shapes.geometric}
usepackage{ifthen}
usepackage[first=0, last=1, quiet]{lcg} % rand
begin{document}
newcommand{DrawCore}[3]{
ifodd #3
begin{scope}[rotate around={135:(#1,#2)}]
node [draw, cylinder, cylinder uses custom fill, cylinder body fill=white, shape aspect=4, minimum width=2cm, line width=0.5mm] (c1) at
(#1,#2){};
node [draw, ellipse, minimum width=0.5cm,minimum height=1.4cm, rotate=0, line width=0.5mm] (c2) at (c1.top-|c1.before top){};
randifthenelse{equal{arabic{rand}}{1}}{
draw[-latex,red] (c1.85|-c1.105) to[bend right=25] (c1.275|-c1.255);
}{
draw[latex-,red] (c1.85|-c1.105) to[bend right=25] (c1.275|-c1.255);
}
%draw[-latex,red] (c1.85|-c1.105) to[bend right=25] (c1.275|-c1.255);
end{scope}
draw [line width=0.5mm] (#1-1.9,#2+0.4) -- (#1-0.255,#2+0.4);
draw [line width=0.5mm] (#1+0.65,#2+0.4) -- (#1+1.2,#2+0.4);
draw [line width=0.5mm] (#1-0.4,#2+1.4) -- (#1-0.4,#2+0.1);
draw [line width=0.5mm] (#1-0.4,#2-0.65) -- (#1-0.4,#2-1.6);
[else
begin{scope}[yshift=0.5cm]
begin{scope}[rotate around={-135:(#1,#2)}]
node [draw, cylinder, cylinder uses custom fill, cylinder body fill=white, shape aspect=4, minimum width=2cm, line width=0.5mm] (c1) at
(#1,#2){};
node [draw, ellipse, minimum width=0.5cm,minimum height=1.4cm, rotate=0, line width=0.5mm] (c2) at (c1.top-|c1.before top){};
randifthenelse{equal{arabic{rand}}{1}}{
draw[-latex,red] (c1.85|-c1.105) to[bend right=25] (c1.275|-c1.255);
}{
draw[latex-,red] (c1.85|-c1.105) to[bend right=25] (c1.275|-c1.255);
}
%draw[latex-,red] (c1.85|-c1.105) to[bend right=25] (c1.275|-c1.255);
end{scope}
end{scope}
draw [line width=0.5mm] (#1-1.9,#2+0.4) -- (#1-0.4,#2+0.4);
draw [line width=0.5mm] (#1+0.5,#2+0.4) -- (#1+1.2,#2+0.4);
draw [line width=0.5mm] (#1-0.4,#2+1.4) -- (#1-0.4,#2+1.2);
draw [line width=0.5mm] (#1-0.4,#2+0.4) -- (#1-0.4,#2-1.6);
]fi
}
begin{tikzpicture}[scale=0.5, transform shape]
foreach x [count = xi] in {0,3,...,12}{
foreach y [count = yi,evaluate=y as z using int( xi+yi )] in {0,3,...,12}{
DrawCore{x}{y}{z};
}
}
end{tikzpicture}
end{document}
Answered by Cristian Koliver on September 30, 2021
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