diff options
Diffstat (limited to 'ep_merger_mask.py')
| -rw-r--r-- | ep_merger_mask.py | 131 |
1 files changed, 131 insertions, 0 deletions
diff --git a/ep_merger_mask.py b/ep_merger_mask.py new file mode 100644 index 0000000..910ab4d --- /dev/null +++ b/ep_merger_mask.py @@ -0,0 +1,131 @@ +# coding: UTF8 +# 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 math +import random +import cairo +import ka_random +import model_allele +import exon_position +import exon_direction + +class MaskMerger(model_allele.Allele): + """MaskMerger + """ + + def __init__(self, trunk): + """Constructor for a simple merger.""" + super(MaskMerger, self).__init__(trunk) + self.alfa1 = 1.0 + self.alfa2 = 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_alfa = (0.0, 1.0) + + def __eq__(self, other): + """Equality based on same instance.""" + equal = isinstance(other, MaskMerger) \ + and self.alfa1 == other.alfa1 \ + and self.alfa2 == other.alfa2 \ + and self.center == other.center \ + and self.direction == other.direction + return equal + + def randomize(self): + """ + """ + self.alfa1 = random.uniform(self.constraint_alfa[0], self.constraint_alfa[1]) + self.alfa2 = random.uniform(self.constraint_alfa[0], self.constraint_alfa[1]) + self.center.randomize() + self.direction.randomize() + + def mutate(self): + """ + """ + if ka_random.is_mutating(): + self.alfa1 += ka_random.jitter_constrained(self.constraint_alfa) + self.alfa1 = ka_random.limitate_range(self.alfa1, self.constraint_alfa[0], self.constraint_alfa[1]) + if ka_random.is_mutating(): + self.alfa2 += ka_random.jitter_constrained(self.constraint_alfa) + self.alfa2 = ka_random.limitate_range(self.alfa2, self.constraint_alfa[0], self.constraint_alfa[1]) + self.center.mutate() + self.direction.mutate() + + def shuffle(self): + """ + """ + pass + + def crossingover(self, other): + """ + pre: isinstance(other, MaskMerger) + pre: isinstance(self, MaskMerger) + # check for distinct references, needs to copy content, not references + post: __return__ is not self + post: __return__ is not other + """ + new_one = MaskMerger(self.get_trunk()) + crossing = ka_random.crossing_sequence(2) + new_one.alfa1 = self.alfa1 if crossing[0] else other.alfa1 + new_one.alfa2 = self.alfa2 if crossing[0] else other.alfa2 + new_one.center = self.center if crossing[0] else other.center + new_one.direction = self.direction if crossing[1] else other.direction + return new_one + + def draw_single_layer(self, single_layer, mask_layer, ctx, width, height): + """ + pre: single_layer is not None + pre: ctx is not None + pre: width > 0 + pre: height > 0 + pre: width == height + """ + # paint one layer masked by an linear gradient + ctx.save() + + dx = self.direction.offset * math.cos(self.direction.radian) + dy = self.direction.offset * math.sin(self.direction.radian) + linear = cairo.LinearGradient(self.center.x_pos + dx, + self.center.y_pos + dy, + self.center.x_pos - dx, + self.center.y_pos - dy) + linear.add_color_stop_rgba(1.0, 1.0, 1.0, 1.0, self.alfa1) + linear.add_color_stop_rgba(0.0, 0.0, 0.0, 0.0, self.alfa2) + ctx.mask(linear) + + single_layer.draw(ctx, width, height) + ctx.restore() + + def explain(self): + """ + post len(__return__) == 3 + """ + return u'Mask merger, center=' + self.center.explain() \ + + u' direction=' + self.direction.explain(), \ + None, \ + None + + def copy(self): + """A copy constructor. + post: isinstance(__return__, MaskMerger) + # check for distinct references, needs to copy content, not references + post: __return__ is not self + """ + new_one = MaskMerger(self.get_trunk()) + new_one.center = self.center.copy() + new_one.direction = self.direction.copy() + return new_one |