Surf2stl.py

Export a surface to a STL(Stereolithography) file.

Description

Functions in this script (write, tri_write) can export 3d surface to a STL (Stereolithography) format file. This is the python version of surf2stl.m in MATLAB (or Octave).

Exported files can be imported in various 3d software tools (like Blender, Meshlab, etc.)

Installation

clone this repository

git clone https://github.com/asahidari/surf2stl-python

Usage

Write python script like this:

import numpy as np
import surf2stl
 
x = np.linspace(-6, 6, 30)
y = np.linspace(-6, 6, 30)
X, Y = np.meshgrid(x, y)
Z = np.sin(np.sqrt(X ** 2 + Y ** 2))

surf2stl.write('3d-sinusoidal.stl', X, Y, Z)

Or like this:

import numpy as np
from scipy.spatial import Delaunay
import surf2stl

u = np.linspace(0, 2.0 * np.pi, endpoint=True, num=50)
v = np.linspace(-0.5, 0.5, endpoint=True, num=10)
u, v = np.meshgrid(u, v)
u, v = u.flatten(), v.flatten()

x = (1 + 0.5 * v * np.cos(u / 2.0)) * np.cos(u)
y = (1 + 0.5 * v * np.cos(u / 2.0)) * np.sin(u)
z = 0.5 * v * np.sin(u / 2.0)

delaunay_tri = Delaunay(np.array([u, v]).T)
surf2stl.tri_write('mobius.stl', x, y, z, delaunay_tri)

If you use jupyter notebook, 'Surf2stl-python_example.ipynb' shows the examples with 3d graphs in matplotlib.

Requirement

Python 3
numpy
scipy
matplotlib (to draw graph in python)

Author

asahidari

License

MIT