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# coding: UTF-8
# Copyright 2009, 2010 Thomas Jourdan
#
# This program 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.
#
# This program 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 this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
from gettext import gettext as _
import ka_debug
import ka_factory
import model_locus
import model_layer
import model_random
import model_constraintpool
import exon_color
import math
LINE_WIDTH__CONSTRAINT = 'linewidthconstraint'
SIZE_CONSTRAINT = 'sizeconstraint'
START_ANGLE_CONSTRAINT = 'startangleconstraint'
ANGLE_CONSTRAINT = 'angleconstraint'
SAMPLERTYPE_CONSTRAINT = 'samplertypeconstraint'
class CircularArc(model_layer.Layer):
"""A layer with circular arcs
"""
cdef = [{'bind' : LINE_WIDTH__CONSTRAINT,
'name' : 'Specifies line width of the circle.',
'domain': model_constraintpool.FLOAT_RANGE,
'min' : 0.01, 'max': 0.25},
{'bind' : SIZE_CONSTRAINT,
'name' : 'A factor for scaling the radius of the circle.',
'domain': model_constraintpool.FLOAT_RANGE,
'min' : 0.01, 'max': 1.0},
{'bind' : START_ANGLE_CONSTRAINT,
'name' : 'The start angle, in radians.',
'domain': model_constraintpool.FLOAT_RANGE,
'min' : 0.0, 'max': 2.0*math.pi},
{'bind' : ANGLE_CONSTRAINT,
'name' : 'The angle spawned by this arc, in radians.',
'domain': model_constraintpool.FLOAT_RANGE,
'min' : -3.0*math.pi, 'max': 3.0*math.pi},
{'bind' : SAMPLERTYPE_CONSTRAINT,
'name' : 'Permitted sampler types',
'domain': model_constraintpool.STRING_1_OF_N,
'enum' : ka_factory.get_factory('sampler').keys()},
]
def __init__(self, trunk):
"""CircularArc diagram layer constructor"""
super(CircularArc, self).__init__(trunk)
cpool = model_constraintpool.ConstraintPool.get_pool()
self.linecolor = exon_color.Color(self.path, 0, 0, 0, 1)
self.line_width = cpool.get(self, LINE_WIDTH__CONSTRAINT)[0]
self.size = cpool.get(self, SIZE_CONSTRAINT)[0]
self.start_angle = cpool.get(self, START_ANGLE_CONSTRAINT)[0]
self.angle = cpool.get(self, ANGLE_CONSTRAINT)[0]
sampler_factory = ka_factory.get_factory('sampler')
sampler_key = sampler_factory.keys()[0]
self.sampler = sampler_factory.create(sampler_key, self.path)
def dot(self):
result = ""
anchor = ka_debug.dot_id(self) + ' -> '
for ref in [self.linecolor, self.sampler, ]:
result += ka_debug.dot_ref(anchor, ref)
return result
def __eq__(self, other):
"""Equality based on the objects components."""
equal = isinstance(other, CircularArc) \
and super(CircularArc, self).__eq__(other) \
and self.linecolor == other.linecolor \
and self.line_width == other.line_width \
and self.size == other.size \
and self.start_angle == other.start_angle \
and self.angle == other.angle \
and self.sampler == other.sampler
return equal
def randomize(self):
"""Randomize the layers components."""
super(CircularArc, self).randomize()
cpool = model_constraintpool.ConstraintPool.get_pool()
self.linecolor.randomize()
line_width_constraint = cpool.get(self, LINE_WIDTH__CONSTRAINT)
self.line_width = model_random.uniform_constrained(line_width_constraint)
size_constraint = cpool.get(self, SIZE_CONSTRAINT)
self.size = model_random.uniform_constrained(size_constraint)
start_angle_constraint = cpool.get(self, START_ANGLE_CONSTRAINT)
self.start_angle = model_random.uniform_constrained(start_angle_constraint)
angle_constraint = cpool.get(self, ANGLE_CONSTRAINT)
self.angle = model_random.uniform_constrained(angle_constraint)
sampler_factory = ka_factory.get_factory('sampler')
samplertype_constraint = cpool.get(self, SAMPLERTYPE_CONSTRAINT)
self.sampler = sampler_factory.create_random(samplertype_constraint,
self.path)
self.sampler.randomize()
def mutate(self):
"""Make small random changes to the layers components."""
super(CircularArc, self).mutate()
cpool = model_constraintpool.ConstraintPool.get_pool()
self.linecolor.mutate()
line_width_constraint = cpool.get(self, LINE_WIDTH__CONSTRAINT)
self.line_width = model_random.jitter_constrained(
self.line_width, line_width_constraint)
size_constraint = cpool.get(self, SIZE_CONSTRAINT)
self.size = model_random.jitter_constrained(self.size, size_constraint)
start_angle_constraint = cpool.get(self, START_ANGLE_CONSTRAINT)
self.start_angle = model_random.jitter_constrained(self.start_angle, start_angle_constraint)
angle_constraint = cpool.get(self, ANGLE_CONSTRAINT)
self.angle = model_random.jitter_constrained(self.angle, angle_constraint)
self.sampler.mutate()
def swap_places(self):
"""Shuffle similar components."""
self.sampler.swap_places()
def crossingover(self, other):
"""
pre: isinstance(other, CircularArc)
pre: isinstance(self, CircularArc)
# check for distinct references, needs to copy content, not references
post: __return__ is not self
post: __return__ is not other
post: model_locus.unique_check(__return__, self, other) == ''
"""
new_one = CircularArc(self.get_trunk())
crossing = self.crossingover_base(new_one, other, 4)
new_one.linecolor = self.linecolor.crossingover(other.linecolor)
new_one.line_width = self.line_width if crossing[0] else other.line_width
new_one.size = self.size if crossing[1] else other.size
new_one.start_angle = self.start_angle if crossing[2] else other.start_angle
new_one.angle = self.angle if crossing[3] else other.angle
new_one.sampler = model_random.crossingover_elem(self.sampler,
other.sampler)
return new_one
def render(self, task, ctx, width, height):
"""
pre: ctx is not None
pre: width > 0
pre: height > 0
pre: width == height
"""
self.begin_render(ctx, width, height)
ctx.save()
# ka_debug.matrix_s(ctx.get_matrix())
ctx.set_line_width(self.line_width)
rgba = self.linecolor.rgba
ctx.set_source_rgba(rgba[0], rgba[1], rgba[2], rgba[3])
points = self.sampler.get_sample_points()
for index, point in enumerate(points):
nb2 = index+1
if nb2 < len(points):
radius = self.size*math.sqrt((points[nb2][0]-point[0])**2.0 \
+ (points[nb2][1]-point[1])**2.0)
if self.angle > 2.0*math.pi or self.angle < -2.0*math.pi :
ctx.arc(point[0], point[1], radius, 0.0, 2.0*math.pi)
elif self.angle > 0.0:
ctx.arc(point[0], point[1], radius,
self.start_angle, self.start_angle + self.angle)
else:
ctx.arc_negative(point[0], point[1], radius,
self.start_angle, self.start_angle + self.angle)
ctx.stroke()
# ka_debug.matrix_r(ctx.get_matrix())
ctx.restore()
def explain(self, formater):
formater.begin_list(_('Layer ') + self.__class__.__name__)
super(CircularArc, self).explain(formater)
formater.color_item(self.linecolor, _('line color:'))
formater.text_item(_('line width: ') + str(self.line_width))
formater.text_item(_('size: ') + str(self.size))
formater.text_item(_('start angle: ') + str(self.start_angle))
formater.text_item(_('angle: ') + str(self.angle))
text, surface, descr = self.sampler.explain()
if surface is not None:
formater.surface_item(surface, _('sampling points: ') + text, descr)
else:
formater.text_item(text)
formater.end_list()
def copy(self):
"""The CircularArc diagram layers copy constructor.
# check for distinct references, needs to copy content, not references
post: __return__ is not self
"""
new_one = CircularArc(self.get_trunk())
self.copy_base(new_one)
new_one.linecolor = self.linecolor.copy()
new_one.line_width = self.line_width
new_one.size = self.size
new_one.start_angle = self.start_angle
new_one.angle = self.angle
new_one.sampler = self.sampler.copy()
return new_one
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