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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
import math
import model_random
import model_locus
import model_allele
import model_constraintpool
from gettext import gettext as _
import cairo
ORDER_CONSTRAINT = 'orderconstaint'
RADIUS_CONSTRAINT = 'radiusconstraint'
SCALE_CONSTRAINT = 'scaleconstraint'
DIM_OUT_CONSTRAINT = 'dimoutconstraint'
class DiskStamp(model_allele.Allele):
"""DiskStamp:.
inv: self.radius >= 0.0
"""
cdef = [{'bind' : ORDER_CONSTRAINT,
'name' : 'Number of nested disks',
'domain': model_constraintpool.FLOAT_RANGE,
'min' : 1.0, 'max': 8.0},
{'bind' : RADIUS_CONSTRAINT,
'name' : 'Radius of the filled cyclic polygon or circle',
'domain': model_constraintpool.FLOAT_RANGE,
'min' : 0.01, 'max': 0.25},
{'bind' : DIM_OUT_CONSTRAINT,
'name' : 'Difference in luminosity between successive disks',
'domain': model_constraintpool.FLOAT_RANGE,
'min' : 0.1, 'max': 1.25},
{'bind' : SCALE_CONSTRAINT,
'name' : 'Difference in the radius between successive disks',
'domain': model_constraintpool.FLOAT_RANGE,
'min' : 0.025, 'max': 0.975},
]
def __init__(self, trunk, dummy):
"""Constructor for a flip merger."""
super(DiskStamp, self).__init__(trunk)
self.order = 1.0
self.radius = 0.1
self.scale = 0.5
self.dim_out = 0.5
def __eq__(self, other):
"""Equality based on radius."""
equal = isinstance(other, DiskStamp) \
and self.order == other.order \
and self.radius == other.radius \
and self.scale == other.scale \
and self.dim_out == other.dim_out
return equal
def randomize(self):
"""Randomize the layers components."""
cpool = model_constraintpool.ConstraintPool.get_pool()
order_constraint = cpool.get(self, ORDER_CONSTRAINT)
self.order = model_random.uniform_constrained(order_constraint)
radius_constraint = cpool.get(self, RADIUS_CONSTRAINT)
self.radius = model_random.uniform_constrained(radius_constraint)
scale_constraint = cpool.get(self, SCALE_CONSTRAINT)
self.scale = model_random.uniform_constrained(scale_constraint)
dim_out_constraint = cpool.get(self, DIM_OUT_CONSTRAINT)
self.dim_out = model_random.uniform_constrained(dim_out_constraint)
def mutate(self):
"""Make small random changes to the layers components."""
cpool = model_constraintpool.ConstraintPool.get_pool()
order_constraint = cpool.get(self, ORDER_CONSTRAINT)
self.order = model_random.jitter_constrained(self.order, order_constraint)
radius_constraint = cpool.get(self, RADIUS_CONSTRAINT)
self.radius = model_random.jitter_constrained(self.radius, radius_constraint)
scale_constraint = cpool.get(self, SCALE_CONSTRAINT)
self.scale = model_random.jitter_constrained(self.scale, scale_constraint)
dim_out_constraint = cpool.get(self, DIM_OUT_CONSTRAINT)
self.dim_out = model_random.jitter_constrained(self.dim_out, dim_out_constraint)
def swap_places(self):
"""Nothing to do."""
def crossingover(self, other):
"""
pre: isinstance(other, DiskStamp)
pre: isinstance(self, DiskStamp)
# 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 = DiskStamp(self.get_trunk(), -1)
cross_sequence = model_random.crossing_sequence(4)
new_one.order = self.order if cross_sequence[0] else other.order
new_one.radius = self.radius if cross_sequence[1] else other.radius
new_one.scale = self.scale if cross_sequence[2] else other.scale
new_one.dim_out = self.dim_out if cross_sequence[3] else other.dim_out
return new_one
def set_stamp_extent(self, width, height):
"""Set extent of stamp. This stamps will ignore these parameters."""
pass
def render(self, ctx, point, state):
"""
pre: ctx is not None
pre: len(point) == 2
"""
src = ctx.get_source()
# print ctx.get_source(), isinstance(ctx.get_source(), cairo.SolidPattern)
if isinstance(src, cairo.SolidPattern):
rgba = src.get_rgba()
dim = div = 1.0
for dummy in xrange(1, int(math.floor(self.order))):
ctx.set_source_rgba(rgba[0]*dim,
rgba[1]*dim,
rgba[2]*dim, rgba[3])
ctx.arc(point[0], point[1],
self.radius*div, 0.0, 2.0*math.pi)
ctx.fill()
div *= self.scale
dim *= self.dim_out
ctx.set_source_rgba(rgba[0], rgba[1], rgba[2], rgba[3])
def explain(self):
"""
post: len(__return__) == 3
"""
str_dim_out = _('dim out: %4.3f') % self.dim_out
str_scale = _('scale: %4.3f') % self.scale
return _('Disk stamp: number of disks: ') + str(int(math.floor(self.order))) \
+ ', ' + str_dim_out \
+ ', ' + str_scale , \
None, \
None
def copy(self):
"""A copy constructor.
post: isinstance(__return__, DiskStamp)
# check for distinct references, needs to copy content, not references
post: __return__ is not self
"""
new_one = DiskStamp(self.get_trunk(), -1)
new_one.order = self.order
new_one.radius = self.radius
new_one.scale = self.scale
new_one.dim_out = self.dim_out
return new_one
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