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Vẽ các đối tượng phẳng trong ô 3D#Chứng minh sử dụng pathpatch_2d_to_3d để 'vẽ' hình dạng và văn bản trên biểu đồ 3D
Circle, PathPatch
from matplotlib.text import TextPath
from matplotlib.transforms import Affine2D
import mpl_toolkits.mplot3d.art3d as art3d
def text3d[ax, xyz, s, zdir="z", size=None, angle=0, usetex=False, **kwargs]:
"""
Plots the string *s* on the axes *ax*, with position *xyz*, size *size*,
and rotation angle *angle*. *zdir* gives the axis which is to be treated as
the third dimension. *usetex* is a boolean indicating whether the string
should be run through a LaTeX subprocess or not. Any additional keyword
arguments are forwarded to `.transform_path`.
Note: zdir affects the interpretation of xyz.
"""
x, y, z = xyz
if zdir == "y":
xy1, z1 = [x, z], y
elif zdir == "x":
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[projection='3d']
# Draw a circle on the x=0 'wall'
p = Circle[[5, 5], 3]
ax.add_patch[p]
art3d.pathpatch_2d_to_3d[p, z=0, zdir="x"]
# Manually label the axes
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=np.pi / 2, ec="none", fc="k"]
text3d[ax, [12, 10, 4], "Z-axis", zdir="y", size=.5, usetex=False,
angle=np.pi / 2, ec="none", fc="k"]
# Write a Latex formula on the z=0 'floor'
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_xlim[0, 10]
ax.set_ylim[0, 10]
ax.set_zlim[0, 10]
plt.show[]
Download Python source code: pathpatch3d.py
Download Jupyter notebook: pathpatch3d.ipynb
Thư viện được tạo bởi Sphinx-Gallery