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Python

""":mod:`wand.cdefs.structures` --- MagickWand C-Structures
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.. versionadded:: 0.5.0
"""
from ctypes import POINTER, Structure, c_bool, c_double, c_int, c_size_t
from wand.cdefs.wandtypes import c_magick_real_t, c_magick_size_t, c_ssize_t
__all__ = ('AffineMatrix', 'CCMaxMetrics', 'CCObjectInfo', 'CCObjectInfo70A',
'CCObjectInfo710', 'ChannelFeature', 'GeometryInfo', 'KernelInfo',
'MagickPixelPacket', 'PixelInfo', 'PointInfo', 'RectangleInfo')
class AffineMatrix(Structure):
_fields_ = [('sx', c_double),
('rx', c_double),
('ry', c_double),
('sy', c_double),
('tx', c_double),
('ty', c_double)]
class ChannelFeature(Structure):
"""
/*
Haralick texture features.
*/
typedef struct _ChannelFeatures
{
double
angular_second_moment[4],
contrast[4],
correlation[4],
variance_sum_of_squares[4],
inverse_difference_moment[4],
sum_average[4],
sum_variance[4],
sum_entropy[4],
entropy[4],
difference_variance[4],
difference_entropy[4],
measure_of_correlation_1[4],
measure_of_correlation_2[4],
maximum_correlation_coefficient[4];
} ChannelFeatures;
"""
_fields_ = [('angular_second_moment', c_double * 4),
('contrast', c_double * 4),
('correlation', c_double * 4),
('variance_sum_of_squares', c_double * 4),
('inverse_difference_moment', c_double * 4),
('sum_average', c_double * 4),
('sum_variance', c_double * 4),
('sum_entropy', c_double * 4),
('entropy', c_double * 4),
('difference_variance', c_double * 4),
('difference_entropy', c_double * 4),
('measure_of_correlation_1', c_double * 4),
('measure_of_correlation_2', c_double * 4),
('maximum_correlation_coefficient', c_double * 4)]
class GeometryInfo(Structure):
NoValue = 0x0000
XValue = 0x0001
XiValue = 0x0001
YValue = 0x0002
PsiValue = 0x0002
WidthValue = 0x0004
RhoValue = 0x0004
HeightValue = 0x0008
SigmaValue = 0x0008
ChiValue = 0x0010
XiNegative = 0x0020
XNegative = 0x0020
PsiNegative = 0x0040
YNegative = 0x0040
ChiNegative = 0x0080
PercentValue = 0x1000
AspectValue = 0x2000
NormalizeValue = 0x2000
LessValue = 0x4000
GreaterValue = 0x8000
MinimumValue = 0x10000
CorrelateNormalizeValue = 0x10000
AreaValue = 0x20000
DecimalValue = 0x40000
SeparatorValue = 0x80000
AspectRatioValue = 0x100000
AllValues = 0x7fffffff
_fields_ = [('rho', c_double),
('sigma', c_double),
('xi', c_double),
('psi', c_double),
('chi', c_double)]
class KernelInfo(Structure):
pass
KernelInfo._fields_ = [('type', c_int),
('width', c_size_t),
('height', c_size_t),
('x', c_ssize_t),
('y', c_ssize_t),
('values', POINTER(c_double)),
('minimum', c_double),
('maximum', c_double),
('negative_range', c_double),
('positive_range', c_double),
('angle', c_double),
('next', POINTER(KernelInfo)),
('signature', c_size_t)]
class MagickPixelPacket(Structure):
_fields_ = [('storage_class', c_int),
('colorspace', c_int),
('matte', c_int),
('fuzz', c_double),
('depth', c_size_t),
('red', c_magick_real_t),
('green', c_magick_real_t),
('blue', c_magick_real_t),
('opacity', c_magick_real_t),
('index', c_magick_real_t)]
class OffsetInfo(Structure):
_fields_ = [('x', c_double),
('y', c_double)]
class PixelInfo(Structure):
_fields_ = [('storage_class', c_int),
('colorspace', c_int),
('alpha_trait', c_int),
('fuzz', c_double),
('depth', c_size_t),
('count', c_magick_size_t),
('red', c_magick_real_t),
('green', c_magick_real_t),
('blue', c_magick_real_t),
('black', c_magick_real_t),
('alpha', c_magick_real_t),
('index', c_magick_real_t)]
class PointInfo(Structure):
_fields_ = [('x', c_double),
('y', c_double)]
class RectangleInfo(Structure):
_fields_ = [('width', c_size_t),
('height', c_size_t),
('x', c_ssize_t),
('y', c_ssize_t)]
class CCObjectInfo(Structure):
_fields_ = [('_id', c_ssize_t),
('bounding_box', RectangleInfo),
('color', PixelInfo),
('centroid', PointInfo),
('area', c_double),
('census', c_double)]
CCMaxMetrics = 16
class CCObjectInfo70A(Structure):
CCMaxMetrics = CCMaxMetrics
_fields_ = [('_id', c_ssize_t),
('bounding_box', RectangleInfo),
('color', PixelInfo),
('centroid', PointInfo),
('area', c_double),
('census', c_double),
('merge', c_bool),
('metric', c_double * CCMaxMetrics)]
class CCObjectInfo710(Structure):
CCMaxMetrics = CCMaxMetrics
_fields_ = [('_id', c_ssize_t),
('bounding_box', RectangleInfo),
('color', PixelInfo),
('centroid', PointInfo),
('area', c_double),
('census', c_double),
('merge', c_bool),
('metric', c_double * CCMaxMetrics),
('key', c_ssize_t)]
# All this will change with IM7, so let's not implement this just yet.
#
# class ImageChannelStatistics(Structure):
# _fields_ = [('maximum', c_double),
# ('minimum', c_double),
# ('mean', c_double),
# ('standard_deviation', c_double),
# ('variance', c_double),
# ('kurtosis', c_double),
# ('skewness', c_double)]
#
# class ImageStatistics(Structure):
# _fields_ = [('red', ImageChannelStatistics),
# ('green', ImageChannelStatistics),
# ('blue', ImageChannelStatistics),
# ('opacity', ImageChannelStatistics)]