"""
============================
Draw flat objects in 3D plot
============================

Demonstrate using pathpatch_2d_to_3d to 'draw' shapes and text on a 3D plot.
"""

import matplotlib.pyplot as plt
from matplotlib.patches import Circle, PathPatch
# register Axes3D class with matplotlib by importing Axes3D
from mpl_toolkits.mplot3d import Axes3D
import mpl_toolkits.mplot3d.art3d as art3d
from matplotlib.text import TextPath
from matplotlib.transforms import Affine2D


def text3d(ax, xyz, s, zdir="z", size=None, angle=0, usetex=False, **kwargs):

    x, y, z = xyz
    if zdir == "y":
        xy1, z1 = (x, z), y
    elif zdir == "y":
        xy1, z1 = (y, z), x
    else:
        xy1, z1 = (x, y), z

    text_path = TextPath((0, 0), s, size=size, usetex=usetex)
    trans = Affine2D().rotate(angle).translate(xy1[0], xy1[1])

    p1 = PathPatch(trans.transform_path(text_path), **kwargs)
    ax.add_patch(p1)
    art3d.pathpatch_2d_to_3d(p1, z=z1, zdir=zdir)


fig = plt.figure()
ax = fig.add_subplot(111, projection='3d')

p = Circle((5, 5), 3)
ax.add_patch(p)
art3d.pathpatch_2d_to_3d(p, z=0, zdir="x")


text3d(ax, (4, -2, 0), "X-axis", zdir="z", size=.5, usetex=False,
       ec="none", fc="k")
text3d(ax, (12, 4, 0), "Y-axis", zdir="z", size=.5, usetex=False,
       angle=.5*3.14159, ec="none", fc="k")
text3d(ax, (12, 10, 4), "Z-axis", zdir="y", size=.5, usetex=False,
       angle=.5*3.14159, ec="none", fc="k")

text3d(ax, (1, 5, 0),
       r"$\displaystyle G_{\mu\nu} + \Lambda g_{\mu\nu} = "
       r"\frac{8\pi G}{c^4} T_{\mu\nu}  $",
       zdir="z", size=1, usetex=True,
       ec="none", fc="k")

ax.set_xlim3d(0, 10)
ax.set_ylim3d(0, 10)
ax.set_zlim3d(0, 10)

plt.show() 

Traceback (most recent call last):
  File "C:\Users\______\AppData\Local\Programs\Python
    \Python311\Lib\site-packages\matplotlib\texmanager.py", line 255, in _run_checked_subprocess
    report = subprocess.check_output(
             ^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users\______\AppData\Local\Programs\Python
    \Python311\Lib\subprocess.py", line 466, in check_output
    return run(*popenargs, stdout=PIPE, timeout=timeout, check=True,
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users\______\AppData\Local\Programs\Python
    \Python311\Lib\subprocess.py", line 548, in run
    with Popen(*popenargs, **kwargs) as process:
         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users\______\AppData\Local\Programs\Python
    \Python311\Lib\subprocess.py", line 1026, in __init__
    self._execute_child(args, executable, preexec_fn, close_fds,
  File "C:\Users\______\AppData\Local\Programs\Python
    \Python311\Lib\subprocess.py", line 1538, in _execute_child
    hp, ht, pid, tid = _winapi.CreateProcess(executable, args,
                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
FileNotFoundError: [WinError 2] 指定されたファイルが見つかりません。

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "M:\______\pathpatch3d_demo.py", line 51, in 
    text3d(ax, (1, 5, 0),
  File "M:\______\pathpatch3d_demo.py", line 28, in text3d
    text_path = TextPath((0, 0), s, size=size, usetex=usetex)
                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users\______\AppData\Local\Programs\Python
    \Python311\Lib\site-packages\matplotlib\textpath.py", line 366, in __init__
    *text_to_path.get_text_path(prop, s, ismath=ismath),
     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users\______\AppData\Local\Programs
    \Python\Python311\Lib\site-packages\matplotlib\textpath.py", line 113, in get_text_path
    glyph_info, glyph_map, rects = self.get_glyphs_tex(prop, s)
                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users\______\AppData\Local\Programs\Python
    \Python311\Lib\site-packages\matplotlib\textpath.py", line 230, in get_glyphs_tex
    dvifile = TexManager().make_dvi(s, self.FONT_SCALE)
              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users\______\AppData\Local\Programs\Python
    \Python311\Lib\site-packages\matplotlib\texmanager.py", line 300, in make_dvi
    cls._run_checked_subprocess(
  File "C:\Users\______\AppData\Local\Programs\Python
    \Python311\Lib\site-packages\matplotlib\texmanager.py", line 259, in _run_checked_subprocess
    raise RuntimeError(
RuntimeError: Failed to process string with tex because latex could not be found 

Traceback (most recent call last):
  File "C:\Program Files\Python312\Lib\site-packages\matplotlib\texmanager.py", 
    line 250, in _run_checked_subprocess
    report = subprocess.check_output(
             ^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Program Files\Python312\Lib\subprocess.py", line 466, in check_output
    return run(*popenargs, stdout=PIPE, timeout=timeout, check=True,
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Program Files\Python312\Lib\subprocess.py", line 548, in run
    with Popen(*popenargs, **kwargs) as process:
         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Program Files\Python312\Lib\subprocess.py", line 1026, in __init__
    self._execute_child(args, executable, preexec_fn, close_fds,
  File "C:\Program Files\Python312\Lib\subprocess.py", line 1538, in _execute_child
    hp, ht, pid, tid = _winapi.CreateProcess(executable, args,
                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
FileNotFoundError: [WinError 2] 指定されたファイルが見つかりません。

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "E:\_____\pathpatch3d_demo.py", line 51, in 
    text3d(ax, (1, 5, 0),
  File "E:\_____\pathpatch3d_demo.py", line 28, in text3d
    text_path = TextPath((0, 0), s, size=size, usetex=usetex)
                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Program Files\Python312\Lib\site-packages\matplotlib\textpath.py", l
    ine 355, in __init__
    *text_to_path.get_text_path(prop, s, ismath=ismath),
     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Program Files\Python312\Lib\site-packages\matplotlib\textpath.py", 
    line 109, in get_text_path
    glyph_info, glyph_map, rects = self.get_glyphs_tex(prop, s)
                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Program Files\Python312\Lib\site-packages\matplotlib\textpath.py", 
    line 219, in get_glyphs_tex
    dvifile = TexManager().make_dvi(s, self.FONT_SCALE)
              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Program Files\Python312\Lib\site-packages\matplotlib\texmanager.py", 
    line 295, in make_dvi
    cls._run_checked_subprocess(
  File "C:\Program Files\Python312\Lib\site-packages\matplotlib\texmanager.py", 
    line 254, in _run_checked_subprocess
    raise RuntimeError(
RuntimeError: Failed to process string with tex because latex could not be found 

• 2023/11/19 Ver=1.04 Python 3.12.0 (matplotlib 3.8.1)で確認
• 2023/11/19 Ver=1.04 Python 3.11.6 (matplotlib 3.7.1)で確認
• 2023/04/01 Ver=1.03 Python 3.11.2 で確認
• 2020/10/30 Ver=1.01 Python 3.7.8 で確認
• 2018/11/28 Ver=1.01 初版リリース

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