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43 lines
1.2 KiB
Markdown
43 lines
1.2 KiB
Markdown
# 三维体素/体积绘制
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演示使用ax.voxels绘制3D体积对象
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```python
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import matplotlib.pyplot as plt
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import numpy as np
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# This import registers the 3D projection, but is otherwise unused.
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from mpl_toolkits.mplot3d import Axes3D # noqa: F401 unused import
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# prepare some coordinates
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x, y, z = np.indices((8, 8, 8))
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# draw cuboids in the top left and bottom right corners, and a link between them
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cube1 = (x < 3) & (y < 3) & (z < 3)
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cube2 = (x >= 5) & (y >= 5) & (z >= 5)
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link = abs(x - y) + abs(y - z) + abs(z - x) <= 2
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# combine the objects into a single boolean array
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voxels = cube1 | cube2 | link
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# set the colors of each object
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colors = np.empty(voxels.shape, dtype=object)
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colors[link] = 'red'
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colors[cube1] = 'blue'
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colors[cube2] = 'green'
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# and plot everything
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fig = plt.figure()
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ax = fig.gca(projection='3d')
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ax.voxels(voxels, facecolors=colors, edgecolor='k')
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plt.show()
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```
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## 下载这个示例
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- [下载python源码: voxels.py](https://matplotlib.org/_downloads/voxels.py)
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- [下载Jupyter notebook: voxels.ipynb](https://matplotlib.org/_downloads/voxels.ipynb) |