Metadata-Version: 2.1
Name: pygmsh
Version: 4.1.7
Summary: Python frontend for Gmsh
Home-page: https://github.com/nschloe/pygmsh
Author: Nico Schlömer
Author-email: nico.schloemer@gmail.com
License: License :: OSI Approved :: MIT License
Project-URL: Documentation, https://pygmsh.readthedocs.org/en/latest
Description: # pygmsh
        
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        <p align="center">
          <img src="https://nschloe.github.io/pygmsh/logo.png" width="20%">
        </p>
        
        [Gmsh](https://gmsh.info/) 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.
        
        #### Built-in
        
        ![](https://nschloe.github.io/pygmsh/screw.png)
        
        To create the above mesh, simply do
        ```python,test
        import pygmsh
        import numpy as np
        
        geom = pygmsh.built_in.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(
            poly,
            translation_axis=axis,
            rotation_axis=axis,
            point_on_axis=[0, 0, 0],
            angle=2.0 / 6.0 * np.pi
            )
        
        points, cells, point_data, cell_data, field_data = pygmsh.generate_mesh(geom)
        ```
        to retrieve all points and cells of the mesh for the specified geometry.
        To store the mesh, you can use [meshio](https://pypi.org/project/meshio);
        for example
        ```python
        import meshio
        meshio.write('test.vtu', points, cells, cell_data=cell_data)
        ```
        The output file can be visualized with various tools, e.g.,
        [ParaView](https://www.paraview.org/).
        
        You will find the above mesh in the directory
        [`test/`](https://github.com/nschloe/pygmsh/tree/master/test/) along with other
        small examples.
        
        #### OpenCASCADE
        
        ![](https://nschloe.github.io/pygmsh/puzzle.png)
        
        As of version 3.0, Gmsh supports OpenCASCADE, allowing for a CAD-style geometry
        specification.
        
        Example:
        ```python,test
        import pygmsh
        
        geom = pygmsh.opencascade.Geometry(
          characteristic_length_min=0.1,
          characteristic_length_max=0.1,
          )
        
        rectangle = geom.add_rectangle([-1.0, -1.0, 0.0], 2.0, 2.0)
        disk1 = geom.add_disk([-1.2, 0.0, 0.0], 0.5)
        disk2 = geom.add_disk([+1.2, 0.0, 0.0], 0.5)
        union = geom.boolean_union([rectangle, disk1, disk2])
        
        disk3 = geom.add_disk([0.0, -0.9, 0.0], 0.5)
        disk4 = geom.add_disk([0.0, +0.9, 0.0], 0.5)
        flat = geom.boolean_difference([union], [disk3, disk4])
        
        geom.extrude(flat, [0, 0, 0.3])
        
        points, cells, point_data, cell_data, field_data = pygmsh.generate_mesh(geom)
        ```
        
        ### Installation
        
        pygmsh is [available from the Python Package
        Index](https://pypi.org/project/pygmsh/), so simply type
        ```
        pip install -U pygmsh
        ```
        to install or upgrade.
        
        ### Usage
        
        Just
        ```
        import pygmsh as pg
        ```
        and make use of all the goodies the module provides. The
        [documentation](https://pygmsh.readthedocs.org/) and the examples under
        [`test/`](https://github.com/nschloe/pygmsh/tree/master/test/)
        might inspire you.
        
        
        ### Testing
        
        To run the pygmsh unit tests, check out this repository and type
        ```
        pytest
        ```
        
        ### Building Documentation
        
        Docs are built using [Sphinx](http://www.sphinx-doc.org/en/stable/).
        
        To build run
        ```
        sphinx-build -b html doc doc/_build
        ```
        
        ### Distribution
        
        To create a new release
        
        1. bump the `__version__` number,
        
        2. publish to PyPi and GitHub:
            ```
            $ make publish
            ```
        
        ### License
        
        pygmsh is published under the [MIT license](https://en.wikipedia.org/wiki/MIT_License).
        
Platform: any
Classifier: Development Status :: 5 - Production/Stable
Classifier: License :: OSI Approved :: MIT License
Classifier: Intended Audience :: Science/Research
Classifier: Operating System :: OS Independent
Classifier: Programming Language :: Python
Classifier: Programming Language :: Python :: 2
Classifier: Programming Language :: Python :: 3
Classifier: Topic :: Scientific/Engineering :: Mathematics
Description-Content-Type: text/markdown
Provides-Extra: all
Provides-Extra: update
