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# coding: UTF-8
# Copyright 2009 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
import random
import cairo
import model_random
import model_allele
import model_constraintpool
from gettext import gettext as _
## Cairo's compositing operators
## OPERATOR_ADD = 12
## OPERATOR_ATOP = 5
## OPERATOR_CLEAR = 0
## OPERATOR_DEST = 6
## OPERATOR_DEST_ATOP = 10
## OPERATOR_DEST_IN = 8
## OPERATOR_DEST_OUT = 9
## OPERATOR_DEST_OVER = 7
## OPERATOR_IN = 3
## OPERATOR_OUT = 4
## OPERATOR_OVER = 2
## OPERATOR_SATURATE = 13
## OPERATOR_SOURCE = 1
## OPERATOR_XOR = 11
#
#OPERATOR_CONSTRAINT = 'operatorconstraint'
class Layer(model_allele.Allele):
"""Layer
"""
base_cdef = [{}]
def __init__(self, trunk):
"""Layer constructor"""
super(Layer, self).__init__(trunk)
self.random_seed = 1512
# self.operator = cairo.OPERATOR_OVER
# def dump(self):
# return (repr(type(self)), id(self),
# self.random_seed,
# self.OPERATOR_NAMES[self.operator],
# )
def __eq__(self, other):
"""Equality based on the cells color components."""
equal = isinstance(other, Layer) \
and self.random_seed == other.random_seed
# and self.operator == other.operator
return equal
def randomize(self):
"""Randomize the layers components."""
# cpool = model_constraintpool.ConstraintPool.get_pool()
self.random_seed = random.randint(1, 65535)
# operator_constraint = cpool.get(self, OPERATOR_CONSTRAINT)
# self.operator = random.choice(operator_constraint)
def mutate(self):
"""Make small random changes to the layers components."""
# if model_random.is_mutating():
# cpool = model_constraintpool.ConstraintPool.get_pool()
# operator_constraint = cpool.get(self, OPERATOR_CONSTRAINT)
# self.operator = random.choice(operator_constraint)
def swap_places(self):
"""Layer is an abstract class. Call swap_places() on sub classes only.
"""
raise TypeError("Layer is an abstract class. " \
"Call swap_places() on sub classes only.")
def crossingover(self, other):
"""Layer is an abstract class. Call crossingover() on sub classes only.
"""
raise TypeError("Layer is an abstract class. " \
"Call crossingover() on sub classes only.")
def crossingover_base(self, new_one, other, cross_lenght):
"""
pre: isinstance(new_one, Layer)
pre: isinstance(other, Layer)
pre: cross_lenght >= 0
"""
cross_sequence = model_random.crossing_sequence(cross_lenght + 2)
new_one.random_seed = self.random_seed \
if cross_sequence[cross_lenght] else other.random_seed
# new_one.operator = self.operator \
# if cross_sequence[cross_lenght+1] else other.operator
return cross_sequence
def render(self, task, ctx, width, height):
"""Layer is an abstract class. Call render() on sub classes only."""
raise TypeError("Layer is an abstract class. " \
"Call render() on sub classes only.")
def begin_render(self, ctx, width, height):
"""
pre: ctx is not None
pre: width > 0
pre: height > 0
pre: width == height
"""
ctx.set_operator(cairo.OPERATOR_SOURCE)
def explain(self, formater):
formater.text_item('Painters algorithm: ' + self.__class__.__name__)
formater.text_item('Seed value for random generator: ' \
+ str(self.random_seed))
def copy(self):
"""Layer is an abstract class. "Call copy() on sub classes only."""
raise TypeError("Layer is an abstract class. " \
"Call copy() on sub classes only.")
def copy_base(self, new_one):
"""The layers copy constructor
pre: isinstance(new_one, Layer)
"""
new_one.random_seed = self.random_seed
# new_one.operator = self.operator
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