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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 math
import random
import cairo
import ka_debug
import model_random
import model_locus
import model_allele
import exon_position
import exon_direction
class MaskModifier(model_allele.Allele):
"""MaskModifier
"""
def __init__(self, trunk):
"""Constructor for a simple modifier."""
super(MaskModifier, self).__init__(trunk)
self.alpha1 = 1.0
self.alpha2 = 0.0
self.center = exon_position.Position(self.path, 0.0, 0.0)
self.direction = exon_direction.Direction(self.path, 0.0, 0.0)
self.constraint_alpha = (0.0, 1.0)
def dot(self):
result = ""
anchor = ka_debug.dot_id(self) + ' -> '
for ref in [self.center, self.direction]:
result += ka_debug.dot_ref(anchor, ref)
return result
def __eq__(self, other):
"""Equality based on same instance and the modifiers components."""
equal = isinstance(other, MaskModifier) \
and self.alpha1 == other.alpha1 \
and self.alpha2 == other.alpha2 \
and self.center == other.center \
and self.direction == other.direction
return equal
def randomize(self):
"""Randomize the modifiers components."""
self.alpha1 = random.uniform(self.constraint_alpha[0],
self.constraint_alpha[1])
self.alpha2 = random.uniform(self.constraint_alpha[0],
self.constraint_alpha[1])
self.center.randomize()
self.direction.randomize()
def mutate(self):
"""Mutate the modifiers components"""
if model_random.is_mutating():
self.alpha1 = model_random.jitter_constrained(self.alpha1, self.constraint_alpha)
if model_random.is_mutating():
self.alpha2 = model_random.jitter_constrained(self.alpha2, self.constraint_alpha)
self.center.mutate()
self.direction.mutate()
def swap_places(self):
"""
"""
self.alpha1, self.alpha2 = model_random.swap_parameters(self.alpha1,
self.alpha2)
self.center.swap_places()
self.direction.swap_places()
def crossingover(self, other):
"""
pre: isinstance(other, MaskModifier)
pre: isinstance(self, MaskModifier)
# 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 = MaskModifier(self.get_trunk())
crossing = model_random.crossing_sequence(2)
new_one.alpha1 = other.alpha1 if crossing[0] else self.alpha1
new_one.alpha2 = other.alpha2 if crossing[0] else self.alpha2
new_one.center = self.center.crossingover(other.center)
new_one.direction = self.direction.crossingover(other.direction)
return new_one
def render_single_layer(self, task, single_layer, single_treenode, ctx, width, height):
"""
pre: single_layer is not None
pre: ctx is not None
pre: width > 0
pre: height > 0
pre: width == height
"""
# paint masked by an linear gradient
ctx.save()
# ka_debug.matrix_s(ctx.get_matrix())
delta_x = self.direction.offset * math.cos(self.direction.radian)
delta_y = self.direction.offset * math.sin(self.direction.radian)
linear = cairo.LinearGradient(self.center.x_pos + delta_x - 0.5,
self.center.y_pos + delta_y - 0.5,
self.center.x_pos - delta_x - 0.5,
self.center.y_pos - delta_y - 0.5)
linear.add_color_stop_rgba(1.0, 1.0, 1.0, 1.0, self.alpha1)
linear.add_color_stop_rgba(0.0, 0.0, 0.0, 0.0, self.alpha2)
ctx.save()
# ka_debug.matrix_s(ctx.get_matrix())
single_layer.render(task, ctx, width, height)
# ka_debug.matrix_r(ctx.get_matrix())
ctx.restore()
ctx.mask(linear)
single_treenode.render(task, ctx, width, height)
# ka_debug.matrix_r(ctx.get_matrix())
ctx.restore()
def explain(self, task, formater, single_layer, single_treenode):
formater.text_item(_('Mask modifier, center=') + self.center.explain() \
+ _(' direction=') + self.direction.explain()
+ _(' alpha1=') + unicode(self.alpha1)
+ _(' alpha2=') + unicode(self.alpha2))
single_layer.explain(formater)
single_treenode.explain(task, formater)
def copy(self):
"""A copy constructor.
post: isinstance(__return__, MaskModifier)
# check for distinct references, needs to copy content, not references
post: __return__ is not self
"""
new_one = MaskModifier(self.get_trunk())
new_one.center = self.center.copy()
new_one.direction = self.direction.copy()
new_one.alpha1 = self.alpha1
new_one.alpha2 = self.alpha2
return new_one
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