assimp/port/PyAssimp
Marco Feuerstein d1edaa949b Fix passing of file extension string.
Previously only the first letter of the string was passed to c, now it passes the whole extension.
2023-06-29 14:51:16 +02:00
..
gen Updated copyright dates. 2020-01-20 08:53:12 -05:00
pyassimp Fix passing of file extension string. 2023-06-29 14:51:16 +02:00
scripts port/PyAssimp/pyassimp/: remove several unised imports 2019-03-29 18:36:17 -04:00
3d_viewer_screenshot.png [pyassimp] Updated README 2016-12-19 21:19:55 +00:00
README.md Fix PyAssimp README typo 2023-02-14 20:21:33 -05:00
README.rst Fix PyAssimp README typo 2023-02-14 20:21:33 -05:00
setup.py [pyassimp] bumped pyassimp version to 5.2.5 2023-06-20 22:33:16 +02:00

README.md

PyAssimp Readme

A simple Python wrapper for Assimp using ctypes to access the library. Requires Python >= 2.6.

Python 3 support is mostly here, but not well tested.

Note that pyassimp is not complete. Many ASSIMP features are missing.

USAGE

Complete example: 3D viewer

pyassimp comes with a simple 3D viewer that shows how to load and display a 3D model using a shader-based OpenGL pipeline.

Screenshot

To use it, from within /port/PyAssimp:

$ cd scripts
$ python ./3D-viewer <path to your model>

You can use this code as starting point in your applications.

Writing your own code

To get started with pyassimp, examine the simpler sample.py script in scripts/, which illustrates the basic usage. All Assimp data structures are wrapped using ctypes. All the data+length fields in Assimp's data structures (such as aiMesh::mNumVertices, aiMesh::mVertices) are replaced by simple python lists, so you can call len() on them to get their respective size and access members using [].

For example, to load a file named hello.3ds and print the first vertex of the first mesh, you would do (proper error handling substituted by assertions ...):


from pyassimp import load
with load('hello.3ds') as scene:

  assert len(scene.meshes)
  mesh = scene.meshes[0]

  assert len(mesh.vertices)
  print(mesh.vertices[0])

Another example to list the 'top nodes' in a scene:


from pyassimp import load
with load('hello.3ds') as scene:

  for c in scene.rootnode.children:
      print(str(c))

INSTALL

Install pyassimp by running:

$ python setup.py install

PyAssimp requires a assimp dynamic library (DLL on windows, .so on linux, .dylib on macOS) in order to work. The default search directories are:

  • the current directory
  • on linux additionally: /usr/lib, /usr/local/lib, /usr/lib/x86_64-linux-gnu

To build that library, refer to the Assimp master INSTALL instructions. To look in more places, edit ./pyassimp/helper.py. There's an additional_dirs list waiting for your entries.