Regression tests

Read a CGF file

>>> # get file version and file type, and read cgf file
>>> stream = open('tests/cgf/test.cgf', 'rb')
>>> data = CgfFormat.Data()
>>> # read chunk table only
>>> data.inspect(stream)
>>> # check chunk types
>>> list(chunktype.__name__ for chunktype in data.chunk_table.get_chunk_types())
['SourceInfoChunk', 'TimingChunk']
>>> data.chunks # no chunks yet
[]
>>> # read full file
>>> data.read(stream)
>>> # get all chunks
>>> for chunk in data.chunks:
...     print(chunk) # doctest: +ELLIPSIS
<class 'pyffi.formats.cgf.SourceInfoChunk'> instance at ...
* source_file : <None>
* date : Fri Sep 28 22:40:44 2007
* author : blender@BLENDER
<BLANKLINE>
<class 'pyffi.formats.cgf.TimingChunk'> instance at ...
* secs_per_tick : 0.000208333338378
* ticks_per_frame : 160
* global_range :
    <class 'pyffi.formats.cgf.RangeEntity'> instance at ...
    * name : GlobalRange
    * start : 0
    * end : 100
* num_sub_ranges : 0
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Parse all CGF files in a directory tree

>>> for stream, data in CgfFormat.walkData('tests/cgf'):
...     print(stream.name)
...     try:
...         data.read(stream)
...     except Exception:
...         print("Warning: read failed due corrupt file, corrupt format description, or bug.")
...     print(len(data.chunks))
...     # do something with the chunks
...     for chunk in data.chunks:
...         chunk.apply_scale(2.0)
tests/cgf/invalid.cgf
Warning: read failed due corrupt file, corrupt format description, or bug.
0
tests/cgf/monkey.cgf
14
tests/cgf/test.cgf
2
tests/cgf/vcols.cgf
6

Create a CGF file from scratch

>>> from pyffi.formats.cgf import CgfFormat
>>> node1 = CgfFormat.NodeChunk()
>>> node1.name = "hello"
>>> node2 = CgfFormat.NodeChunk()
>>> node1.num_children = 1
>>> node1.children.update_size()
>>> node1.children[0] = node2
>>> node2.name = "world"
>>> from tempfile import TemporaryFile
>>> stream = TemporaryFile()
>>> data = CgfFormat.Data() # default is far cry
>>> data.chunks = [node1, node2]
>>> # note: write returns number of padding bytes
>>> data.write(stream)
0
>>> # py3k returns 0 on seek; this hack removes return code from doctest
>>> if stream.seek(0): pass
>>> data.inspect_version_only(stream)
>>> hex(data.header.version)
'0x744'
>>> data.read(stream)
>>> # get all chunks
>>> for chunk in data.chunks:
...     print(chunk) # doctest: +ELLIPSIS +REPORT_NDIFF
<class 'pyffi.formats.cgf.NodeChunk'> instance at 0x...
* name : hello
* object : None
* parent : None
* num_children : 1
* material : None
* is_group_head : False
* is_group_member : False
* reserved_1 :
    <class 'pyffi.object_models.xml.array.Array'> instance at 0x...
    0: 0
    1: 0
* transform :
    [  0.000  0.000  0.000  0.000 ]
    [  0.000  0.000  0.000  0.000 ]
    [  0.000  0.000  0.000  0.000 ]
    [  0.000  0.000  0.000  0.000 ]
* pos : [  0.000  0.000  0.000 ]
* rot :
    <class 'pyffi.formats.cgf.Quat'> instance at 0x...
    * x : 0.0
    * y : 0.0
    * z : 0.0
    * w : 0.0
* scl : [  0.000  0.000  0.000 ]
* pos_ctrl : None
* rot_ctrl : None
* scl_ctrl : None
* property_string : <None>
* children :
    <class 'pyffi.object_models.xml.array.Array'> instance at 0x...
    0: <class 'pyffi.formats.cgf.NodeChunk'> instance at 0x...
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<class 'pyffi.formats.cgf.NodeChunk'> instance at 0x...
* name : world
* object : None
* parent : None
* num_children : 0
* material : None
* is_group_head : False
* is_group_member : False
* reserved_1 :
    <class 'pyffi.object_models.xml.array.Array'> instance at 0x...
    0: 0
    1: 0
* transform :
    [  0.000  0.000  0.000  0.000 ]
    [  0.000  0.000  0.000  0.000 ]
    [  0.000  0.000  0.000  0.000 ]
    [  0.000  0.000  0.000  0.000 ]
* pos : [  0.000  0.000  0.000 ]
* rot :
    <class 'pyffi.formats.cgf.Quat'> instance at 0x...
    * x : 0.0
    * y : 0.0
    * z : 0.0
    * w : 0.0
* scl : [  0.000  0.000  0.000 ]
* pos_ctrl : None
* rot_ctrl : None
* scl_ctrl : None
* property_string : <None>
* children : <class 'pyffi.object_models.xml.array.Array'> instance at 0x...
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Package cgf

Implementation

Regression tests

Read a CGF file

Parse all CGF files in a directory tree

Create a CGF file from scratch