Tikz绘制三维图形

青青子衿

1. \documentclass[tikz,border=5pt]{standalone}
2. \usetikzlibrary{calc}
3. \usetikzlibrary{arrows.meta}
4. \usepackage{tikz-3dplot}
5. \begin{document}
6. \tdplotsetmaincoords{70}{110}
8. \begin{tikzpicture}[>=latex,scale=2,tdplot_main_coords]
9. \pgfmathsetmacro{\x}{1.4}
10. \pgfmathsetmacro{\y}{1.2}
11. \pgfmathsetmacro{\z}{1.2}
12. \path
13. (\x,0,0) coordinate (A) (\x,\y,0) coordinate (B) (0,\y,0) coordinate (C) (0,0,0) coordinate (D)
14. (\x,0,\z) coordinate (E) (\x,\y,\z) coordinate (F) (0,\y,\z) coordinate (G) (0,0,\z) coordinate (H)
15. (2.5*\x,0,0) coordinate (I) (2.5*\x,\y,0) coordinate (J)
16. (\x,2.5*\y,0) coordinate (K) (0,2.5*\y,0) coordinate (L)
17. (2.5*\x,2.5*\y,0) coordinate (M);
19. \draw[canvas is xy plane at z = 0, transform shape, draw = red, fill = red!50, opacity = 0.5] (B) rectangle (D);
20. \node[canvas is xy plane at z = 0] at (0.5*\x,0.5*\y,0) {\rotatebox[origin=c]{90}{$\Omega_0$}};
21. \draw[canvas is xy plane at z = 0, transform shape, dashed, draw = blue, fill = blue!50, opacity = 0.5] (J) rectangle (A);
22. \node[canvas is xy plane at z = 0] at (1.75*\x,0.5*\y,0) {\rotatebox[origin=c]{90}{$\Omega_1$}};
23. \draw[canvas is xy plane at z = 0, transform shape, dashed, draw = yellow, fill = yellow!50, opacity = 0.5] (B) rectangle (M);
24. \node[canvas is xy plane at z = 0] at (1.75*\x,1.75*\y,0) {\rotatebox[origin=c]{90}{$\Omega_2$}};
26. \draw[thin,Stealth-Stealth]($(A)+(0,25pt)$) -- node[above,sloped]{$\tiny{a}$}($(B)+(0,26pt)$);
27. \draw[thin,Stealth-Stealth] ($(B)+(0,26pt)$) -- node[above,sloped]{$\tiny{a}$}($(C)+(0,25pt)$);
29. \draw (A)--(B)--(C)--(D)--(A);
30. \draw (A)--(E) (B)--(F) (C)--(G);
31. \draw (A)--(I) (B)--(J) (B)--(K) (C)--(L);
32. \draw [densely dashed] (D)--(H);
35. \end{tikzpicture}
37. \end{document}

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