/usr/share/pyshared/pyolib/matrix.py is in python-pyo 0.6.8-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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Copyright 2010 Olivier Belanger
This file is part of pyo, a python module to help digital signal
processing script creation.
pyo is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
pyo is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with pyo. If not, see <http://www.gnu.org/licenses/>.
"""
from _core import *
from _maps import *
######################################################################
### Matrix
######################################################################
class NewMatrix(PyoMatrixObject):
"""
Create a new matrix ready for recording.
Optionally, the matrix can be filled with the contents of the
`init` parameter.
See :py:class:`MatrixRec` to write samples in the matrix.
:Parent: :py:class:`PyoMatrixObject`
:Args:
width : int
Desired matrix width in samples.
height : int
Desired matrix height in samples.
init : list of list of floats, optional
Initial matrix. Defaults to None.
.. seealso::
:py:class:`MatrixRec`
>>> s = Server().boot()
>>> s.start()
>>> SIZE = 256
>>> mm = NewMatrix(SIZE, SIZE)
>>> mm.genSineTerrain(freq=2, phase=16)
>>> lfw = Sine([.1,.11], 0, .124, .25)
>>> lfh = Sine([.15,.16], 0, .124, .25)
>>> w = Sine(100, 0, lfw, .5)
>>> h = Sine(10.5, 0, lfh, .5)
>>> c = MatrixPointer(mm, w, h, mul=.2).out()
"""
def __init__(self, width, height, init=None):
PyoMatrixObject.__init__(self)
self._size = (width, height)
if init == None:
self._base_objs = [NewMatrix_base(width, height)]
else:
self._base_objs = [NewMatrix_base(width, height, init)]
def replace(self, x):
"""
Replaces the actual matrix.
:Args:
x : list of list of floats
New matrix. Must be of the same size as the actual matrix.
"""
[obj.setMatrix(x) for obj in self._base_objs]
self.refreshView()
def getRate(self):
"""
Returns the frequency (cycle per second) to give to an
oscillator to read the sound at its original pitch.
"""
return self._base_objs[0].getRate()
def genSineTerrain(self, freq=1, phase=0.0625):
"""
Generates a modulated sinusoidal terrain.
:Args:
freq : float
Frequency of sinusoids used to created the terrain.
Defaults to 1.
phase : float
Phase deviation between rows of the terrain. Should be in
the range 0 -> 1. Defaults to 0.0625.
"""
[obj.genSineTerrain(freq, phase) for obj in self._base_objs]
self.refreshView()
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