95 lines
2.1 KiB
Markdown
95 lines
2.1 KiB
Markdown
PyAssimp Readme
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===============
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A simple Python wrapper for Assimp using `ctypes` to access the library.
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Requires Python >= 2.6.
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Python 3 support is mostly here, but not well tested.
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Note that pyassimp is not complete. Many ASSIMP features are missing.
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USAGE
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-----
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### Complete example: 3D viewer
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`pyassimp` comes with a simple 3D viewer that shows how to load and display a 3D
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model using a shader-based OpenGL pipeline.
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To use it, from within `/port/PyAssimp`:
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```
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$ cd scripts
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$ python ./3D-viewer <path to your model>
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```
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You can use this code as starting point in your applications.
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### Writing your own code
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To get started with `pyassimp`, examine the simpler `sample.py` script in `scripts/`,
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which illustrates the basic usage. All Assimp data structures are wrapped using
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`ctypes`. All the data+length fields in Assimp's data structures (such as
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`aiMesh::mNumVertices`, `aiMesh::mVertices`) are replaced by simple python
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lists, so you can call `len()` on them to get their respective size and access
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members using `[]`.
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For example, to load a file named `hello.3ds` and print the first
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vertex of the first mesh, you would do (proper error handling
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substituted by assertions ...):
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```python
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from pyassimp import *
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scene = load('hello.3ds')
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assert len(scene.meshes)
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mesh = scene.meshes[0]
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assert len(mesh.vertices)
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print(mesh.vertices[0])
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# don't forget this one, or you will leak!
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release(scene)
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```
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Another example to list the 'top nodes' in a
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scene:
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```python
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from pyassimp import *
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scene = load('hello.3ds')
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for c in scene.rootnode.children:
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print(str(c))
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release(scene)
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```
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INSTALL
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-------
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Install `pyassimp` by running:
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```
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$ python setup.py install
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```
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PyAssimp requires a assimp dynamic library (`DLL` on windows,
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`.so` on linux, `.dynlib` on macOS) in order to work. The default search directories
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are:
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- the current directory
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- on linux additionally: `/usr/lib`, `/usr/local/lib`,
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`/usr/lib/x86_64-linux-gnu`
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To build that library, refer to the Assimp master `INSTALL`
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instructions. To look in more places, edit `./pyassimp/helper.py`.
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There's an `additional_dirs` list waiting for your entries.
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