3924a5c32a
Fixes error shown below:
File "C:\Users\micro\build2\boxwin_external_libs\pyassimp\core.py", line 320, in load
scene = _init(model.contents)
File "C:\Users\micro\build2\boxwin_external_libs\pyassimp\core.py", line 206, in _init
raise e
File "C:\Users\micro\build2\boxwin_external_libs\pyassimp\core.py", line 187, in _init
call_init(e, target)
File "C:\Users\micro\build2\boxwin_external_libs\pyassimp\core.py", line 80, in call_init
_init(obj.contents, obj, caller)
File "C:\Users\micro\build2\boxwin_external_libs\pyassimp\core.py", line 214, in _init
if _is_init_type(obj):
File "C:\Users\micro\build2\boxwin_external_libs\pyassimp\core.py", line 86, in _is_init_type
if helper.hasattr_silent(obj,'contents'): #pointer
File "C:\Users\micro\build2\boxwin_external_libs\pyassimp\helper.py", line 277, in hasattr_silent
return hasattr(object, name)
ValueError: NULL pointer access
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.
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 *
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
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.