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Project Description

Gmsh is a powerful mesh generation tool with a scripting language that is notoriously hard to write.

The goal of PyGmsh is to combine the power of Gmsh with the versatility of Python and to provide useful abstractions from the Gmsh scripting language so you can create complex geometries more easily.

To create the above mesh, simply do

import pygmsh as pg
import numpy as np

geom = pg.Geometry()

# Draw a cross.
poly = geom.add_polygon([
    [0.0,   0.5, 0.0],
    [-0.1,  0.1, 0.0],
    [-0.5,  0.0, 0.0],
    [-0.1, -0.1, 0.0],
    [0.0,  -0.5, 0.0],
    [0.1,  -0.1, 0.0],
    [0.5,   0.0, 0.0],
    [0.1,   0.1, 0.0]
    ],
    lcar=0.05
    )

axis = [0, 0, 1]

geom.extrude(
    'Surface{%s}' % poly,
    translation_axis=axis,
    rotation_axis=axis,
    point_on_axis=[0, 0, 0],
    angle=2.0 / 6.0 * np.pi
    )

points, cells = pg.generate_mesh(geom)

to retrieve all points and cells of the mesh for the specified geometry. To store the mesh, you can use meshio; for example

import meshio
meshio.write('test.vtu', points, cells)

The output file can be visualized with various tools, e.g., ParaView.

You will find the above mesh in the directory test/examples/ along with other small examples.

Installation

Python Package Index

PyGmsh is available from the Python Package Index, so simply type

pip install pygmsh

to install or

pip install pygmsh -U

to upgrade.

Manual installation

Download PyGmsh from PyPi or GitHub and install it with

python setup.py install

Requirements

PyGmsh depends on

and, obviously, Gmsh.

Usage

Just

import pygmsh as pg

and make use of all the goodies the module provides. The documentation and the examples under test/examples/ might inspire you.

Testing

To run the PyGmsh unit tests, check out this repository and type

nosetests

or

nose2 -s test

Distribution

To create a new release

  1. bump the __version__ number,

  2. create a Git tag,

    git tag v0.3.1
    git push --tags
    

    and

  3. upload to PyPi:

    make upload
    

License

PyGmsh is published under the MIT license.

Release History

Release History

2.4.2

This version

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2.4.1

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2.4.0

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2.3.0

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2.2.0

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2.1.3

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2.1.2

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2.1.1

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2.1.0

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2.0.1

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2.0.0

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1.0.1

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1.0.0

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0.2.1

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0.2.0

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0.1.0

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Download Files

Download Files

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File Name & Checksum SHA256 Checksum Help Version File Type Upload Date
pygmsh-2.4.2.tar.gz (9.0 kB) Copy SHA256 Checksum SHA256 Source Jul 18, 2016

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