详解python polyscope库的安装和例程

脚本专栏 2024/11/1 佚名

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安装就可以在环境配置好的情况下使用pip安装：

pip install polyscope

如果提示找不到库文件，no moudle的话可以试着把安装下来的polyscope文件夹放在和想要运行的py文件的同一目录下。
而我们安装下来的polyscope文件夹在哪里呢？它们应该位于安装目录中的"Lib/site-packages"中，我的如下图所示：

但是装好之后我们运行一个网上的例程：

import polyscope as ps

# Initialize polyscope
ps.init()

### Register a point cloud
# `my_points` is a Nx3 numpy array
ps.register_point_cloud("my points", my_points)

### Register a mesh
# `verts` is a Nx3 numpy array of vertex positions
# `faces` is a Fx3 array of indices, or a nested list
ps.register_surface_mesh("my mesh", verts, faces, smooth_shade=True)

# Add a scalar function and a vector function defined on the mesh
# vertex_scalar is a length V numpy array of values
# face_vectors is an Fx3 array of vectors per face
ps.get_surface_mesh("my mesh").add_scalar_quantity("my_scalar", 
    vertex_scalar, defined_on='vertices', cmap='blues')
ps.get_surface_mesh("my mesh").add_vector_quantity("my_vector", 
    face_vectors, defined_on='faces', color=(0.2, 0.5, 0.5))

# View the point cloud and mesh we just registered in the 3D UI
ps.show()

还是有错误，找不到polyscope_bindings，我的解决办法是在这个目录下面还应该有一个这个文件：

把他的名字改成polyscope_bindings.pyd就可以解决，库就可以跑通了。但是原例程因为没有给数组所有还有逻辑错误，随便给几个就可以运行了：

import polyscope as ps
import numpy as np

# Initialize polyscope
ps.init()

### Register a point cloud
# `my_points` is a Nx3 numpy array
my_points=np.array([[1,1,1],[1,2,3],[1,2,4],[2,5,3],[2,2,2]])
ps.register_point_cloud("my points", my_points)

### Register a mesh
# `verts` is a Nx3 numpy array of vertex positions
# `faces` is a Fx3 array of indices, or a nested list
verts=np.array([[1,1,1],[1,2,3],[1,2,4],[2,5,3],[2,2,2]])
faces=np.array([[1,1,1],[1,2,3],[1,2,4],[2,4,3],[2,2,2]])
ps.register_surface_mesh("my mesh", verts, faces, smooth_shade=True)

# Add a scalar function and a vector function defined on the mesh
# vertex_scalar is a length V numpy array of values
# face_vectors is an Fx3 array of vectors per face
vertex_scalar = np.array([1,2,3,4,5])
face_vectors=np.array([[1,1,1],[1,2,3],[1,2,4],[2,5,3],[2,2,2]])
ps.get_surface_mesh("my mesh").add_scalar_quantity("my_scalar", 
    vertex_scalar, defined_on='vertices', cmap='blues')
ps.get_surface_mesh("my mesh").add_vector_quantity("my_vector", 
    face_vectors, defined_on='faces', color=(0.2, 0.5, 0.5))

# View the point cloud and mesh we just registered in the 3D UI
ps.show()

这就可以成功使用了