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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 random
import ka_debug
import model_random
import ka_factory
import model_locus
import model_layer
import model_constraintpool
PROBABILITY_CONSTRAINT = 'probabilityconstaint'
DEPTH_CONSTRAINT = 'depthconstraint'
BORDER_WIDTH_CONSTRAINT = 'borderwidthconstraint'
COLORGAMUTTYPE_CONSTRAINT = 'colorgamuttypeconstraint'
class QuadTreeLayer(model_layer.Layer):
"""QuadTreeLayer
inv: len(self.tile_colors) > 0
inv: self.depth > 0
"""
cdef = [{'bind' : PROBABILITY_CONSTRAINT,
'name' : 'Probability of stepping one recursion deeper',
'domain': model_constraintpool.FLOAT_RANGE,
'min' : 0.0, 'max': 1.0},
{'bind' : DEPTH_CONSTRAINT,
'name' : 'Maximum recursion depth for quadtree',
'domain': model_constraintpool.INT_RANGE,
'min' : 1, 'max': 5},
{'bind' : BORDER_WIDTH_CONSTRAINT,
'name' : 'Width of the surrounding border',
'domain': model_constraintpool.FLOAT_RANGE,
'min' : 0.001, 'max': 0.1},
{'bind' : COLORGAMUTTYPE_CONSTRAINT,
'name' : 'Permitted color gamut',
'domain': model_constraintpool.STRING_M_OF_N,
'enum' : ka_factory.get_factory('colorgamut').keys()},
]
def __init__(self, trunk):
"""Quad tree layer constructor"""
super(QuadTreeLayer, self).__init__(trunk)
self.depth = 1
self.propability = 0.5
self.border_width = 0.01
colorgamut_factory = ka_factory.get_factory('colorgamut')
colorgamut_key = colorgamut_factory.keys()[0]
self.colorgamut = colorgamut_factory.create(colorgamut_key, self.path)
self.tile_colors = [self.colorgamut.get_randomized_color(self.path)]
def dot(self):
result = ""
anchor = ka_debug.dot_id(self) + ' -> '
for ref in self.tile_colors:
result += ka_debug.dot_ref(anchor, ref)
return result
def __eq__(self, other):
"""Equality """
equal = isinstance(other, QuadTreeLayer) \
and model_layer.Layer.__eq__(self, other) \
and len(self.tile_colors) == len(other.tile_colors) \
and self.depth == other.depth \
and self.propability == other.propability \
and self.border_width == other.border_width
if equal:
for index, site_color in enumerate(self.tile_colors):
equal = equal and site_color == other.tile_colors[index]
return equal
def randomize(self):
"""Randomize the layers components."""
super(QuadTreeLayer, self).randomize()
cpool = model_constraintpool.ConstraintPool.get_pool()
depth_constraint = cpool.get(self, DEPTH_CONSTRAINT)
self.depth = model_random.randint_constrained(depth_constraint)
border_width_constraint = cpool.get(self, BORDER_WIDTH_CONSTRAINT)
self.border_width = model_random.uniform_constrained(border_width_constraint)
propability_constraint = cpool.get(self, PROBABILITY_CONSTRAINT)
self.propability = model_random.uniform_constrained(propability_constraint)
colorgamut_factory = ka_factory.get_factory('colorgamut')
colorgamuttype_constraint = cpool.get(self, COLORGAMUTTYPE_CONSTRAINT)
self.colorgamut = colorgamut_factory.create_random(colorgamuttype_constraint,
self.path)
self.colorgamut.randomize()
self.tile_colors = []
for dummy in range(self.depth):
site_color = self.colorgamut.get_randomized_color(self.path)
self.tile_colors.append(site_color)
def mutate(self):
"""Make small random changes to the layers components."""
super(QuadTreeLayer, self).mutate()
cpool = model_constraintpool.ConstraintPool.get_pool()
depth_constraint = cpool.get(self, DEPTH_CONSTRAINT)
self.depth = model_random.jitter_discret_constrained(
self.depth, depth_constraint)
propability_constraint = cpool.get(self, PROBABILITY_CONSTRAINT)
self.propability = model_random.jitter_constrained(self.propability,
propability_constraint)
border_width_constraint = cpool.get(self, BORDER_WIDTH_CONSTRAINT)
self.border_width = model_random.jitter_constrained(self.border_width,
border_width_constraint)
self.colorgamut.mutate()
new_site_color = self.colorgamut.get_randomized_color(self.path)
model_random.mutate_list(self.tile_colors,
depth_constraint, new_site_color)
for cix in range(len(self.tile_colors)):
self.colorgamut.adjust_color(self.tile_colors[cix])
def swap_places(self):
"""Shuffle similar components."""
model_random.swap_places(self.tile_colors)
def crossingover(self, other):
"""
pre: isinstance(other, QuadTreeLayer)
pre: isinstance(self, QuadTreeLayer)
# 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 = QuadTreeLayer(self.get_trunk())
cross_sequence = self.crossingover_base(new_one, other, 4)
new_one.depth = self.depth if cross_sequence[0] \
else other.depth
new_one.propability = self.propability if cross_sequence[1] \
else other.propability
new_one.border_width = self.border_width if cross_sequence[2] \
else other.border_width
new_one.colorgamut = other.colorgamut.copy() if cross_sequence[3] \
else self.colorgamut.copy()
new_one.tile_colors = model_random.crossingover_list(self.tile_colors,
other.tile_colors)
for cix in range(len(new_one.tile_colors)):
new_one.colorgamut.adjust_color(new_one.tile_colors[cix])
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)
cell_rand = random.Random(self.random_seed)
self.render_tile(task, ctx, cell_rand, self.depth, -0.5, -0.5, 1.0, 1.0)
def render_tile(self, task, ctx, cell_rand, depth, x, y, width, height):
next_depth = depth-1
rgba = self.tile_colors[next_depth % len(self.tile_colors)].rgba
ctx.set_source_rgba(rgba[0], rgba[1], rgba[2], rgba[3])
ctx.rectangle(x, y, width, height)
ctx.fill()
if depth > 0 and not task.quit \
and cell_rand.random() < self.propability:
width2, height2 = 0.5*width, 0.5*height
self.render_tile(task, ctx, cell_rand, next_depth,
x, y, width2, height2)
self.render_tile(task, ctx, cell_rand, next_depth,
x+width2, y, width2, height2)
self.render_tile(task, ctx, cell_rand, next_depth,
x, y+height2, width2, height2)
self.render_tile(task, ctx, cell_rand, next_depth,
x+width2, y+height2, width2, height2)
ctx.set_line_width((width + height) * self.border_width)
ctx.set_source_rgba(rgba[0], rgba[1], rgba[2], rgba[3])
ctx.rectangle(x, y, width, height)
ctx.stroke()
def explain(self, formater):
formater.begin_list(_('Layer ') + self.__class__.__name__)
super(QuadTreeLayer, self).explain(formater)
formater.text_item(_('Probability of stepping one recursion step deeper: ')
+ str(self.propability))
formater.text_item(_('Maximum recursion depth: ')
+ str(self.depth))
formater.text_item(_('Width of the surrounding border: ')
+ str(self.border_width))
self.colorgamut.explain(formater)
formater.color_array(self.tile_colors, _('Site colors:'))
formater.end_list()
def copy(self):
"""The Quad tree layers copy constructor.
# check for distinct references, needs to copy content, not references
post: __return__ is not self
"""
new_one = QuadTreeLayer(self.get_trunk())
self.copy_base(new_one)
new_one.tile_colors = model_random.copy_list(self.tile_colors)
new_one.propability = self.propability
new_one.depth = self.depth
new_one.border_width = self.border_width
new_one.colorgamut = self.colorgamut.copy()
return new_one
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