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.
pyassimp
comes with a simple 3D viewer that shows how to load and display a 3D
model using a shader-based OpenGL pipeline.
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.
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 *
scene = load('hello.3ds')
assert len(scene.meshes)
mesh = scene.meshes[0]
assert len(mesh.vertices)
print(mesh.vertices[0])
# don't forget this one, or you will leak!
release(scene)
Another example to list the 'top nodes' in a scene:
from pyassimp import *
scene = load('hello.3ds')
for c in scene.rootnode.children:
print(str(c))
release(scene)
Install pyassimp
by running:
$ python setup.py install
PyAssimp requires a assimp dynamic library (DLL
on windows,
.so
on linux, .dynlib
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.
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