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citygml2stl-0.1a1
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مشاهده بیشترتوضیحات
CityGML to printable STL
| ویژگی | مقدار |
|---|---|
| سیستم عامل | - |
| نام فایل | citygml2stl-0.1a1 |
| نام | citygml2stl |
| نسخه کتابخانه | 0.1a1 |
| نگهدارنده | [] |
| ایمیل نگهدارنده | [] |
| نویسنده | Miro Hrončok |
| ایمیل نویسنده | miro@hroncok.cz |
| آدرس صفحه اصلی | UNKNOWN |
| آدرس اینترنتی | https://pypi.org/project/citygml2stl/ |
| مجوز | MIT |
CityGML to STL
==============
Python library to convert `CityGML <http://www.citygml.org/>`_ data to
STL 3D models printable on FDM 3D printers, such as various
`RepRap <http://reprap.org/>`_ printers.
CityGML versions 2.0.0, 1.0.0 and 0.4.0 are supported. Other versions might work as well.
This is a coursework for `Free software GIS
<http://geo.fsv.cvut.cz/gwiki/155YFSG_Free_software_GIS>`_ class on
`Faculty of Civil Engineering <http://www.fsv.cvut.cz/index.php.en>`_,
`Czech Technical University in Prague <http://www.cvut.cz/>`_ (academic
year 2014/2015, group F). Licensed as MIT (see LICENSE).
.. figure:: https://raw.githubusercontent.com/ctu-yfsg/2015-f-citygml/master/berlin.png
:alt: Image of generated STL
CityGML of Alexanderplatz, Berlin, Germany as STL. Data © `Research Center Karlsruhe,
Institute for Applied Computer Science <http://www.iai.fzk.de/www-extern/index.php?id=222&L=1>`_
Installation
------------
To install, just use regular Python means, such as pip.
It is recommended to install Cython before you install this or other requirements.
Python 3.3+, 2.7 and pypy are supported.
.. code-block:: sh
pip install Cython
pip install citygml2stl
Or if installing from cloned repository or unpacked sources:
.. code-block:: sh
pip install Cython
pip install -r requirements.txt
python setup.py install
Usage
-----
To use cityglm2stl from Python proceed as follows:
.. code-block:: python
# import stuff
from citygml2stl import citygml
from citygml2stl import polygons
from citygml2stl import stl
# parse the CityGML file
c = citygml.CityGML('Berlin_Alexanderplatz_v0.4.0.xml')
# export to file berlin.stl
with stl.StlFile('berlin.stl') as berlin:
# Specify as many types as you want,
# or leave without arguments to get all city objects
for obj in c.get_objects_of_types('Building'):
berlin.write_triangles(polygons.object2triangles(obj))
Or, if you would prefer to have multiple STL files instead:
.. code-block:: python
# initialize a counter for filenames
counter = 0
for obj in c.get_objects_of_types('Building'):
with stl.StlFile('berlin{}.stl'.format(counter)) as berlin:
berlin.write_triangles(polygons.object2triangles(obj))
counter += 1
Note that given the quality of most CityGML data found, the STLs will probably not be valid as the
facets will intersect each other. Also given the way the algorithm works, the order of the vertices
of a facet is random and will not always follow the right hand rule.
That said, consider that output needs repairing. Use public cloud services such as
`netfabb Cloud <http://cloud.netfabb.com/>`_ or even open source tools such as
`ADMesh <http://admesh.org/>`_ to repair the output.
You can even use `Python's admesh <https://pypi.python.org/pypi/admesh>`_ module to repair the STLs:
.. code-block:: python
import admesh
...
filename = 'berlin{}.stl'.format(counter)
with stl.StlFile(filename) as berlin:
berlin.write_triangles(polygons.object2triangles(obj))
s = admesh.Stl(filename)
s.repair()
# the results are often located on unthinkable coordinates
s.translate(0, 0, 0)
s.write_binary(filename)
Note that due to limitations of the admesh module it is currently not possible to redirect output
of citygml2stl to admesh without writing it to a file first.
A sample script to invoke from command line is installed to PATH:
.. code-block:: sh
$ citygml2stl Berlin_Alexanderplatz_v0.4.0.xml
Converting Berlin_Alexanderplatz_v0.4.0.xml to Berlin_Alexanderplatz_v0.4.0.stl
Authors
-------
- `Miro Hrončok <https://github.com/hroncok>`_
- Inspired a bit by `CityGML2OBJs <https://github.com/tudelft3d/CityGML2OBJs>`_ by `Filip Biljecki <https://github.com/fbiljecki>`_
نحوه نصب
نصب پکیج whl citygml2stl-0.1a1:
pip install citygml2stl-0.1a1.whl
نصب پکیج tar.gz citygml2stl-0.1a1:
pip install citygml2stl-0.1a1.tar.gz