Added a stamp painter for simple stars.

4 files changed, 180 insertions, 1 deletions

diff --git a/MANIFEST b/MANIFEST
index e79df59..e6c8653 100644
--- a/MANIFEST
+++ b/MANIFEST
@@ -150,6 +150,7 @@ ep_sampler_squaregrid.py
 ep_stamp_disk.py
 ep_stamp_filledcyclic.py
 ep_stamp_glyph.py
+ep_stamp_star.py
 ep_stamp_svg.py
 exon_buzzword.py
 exon_color.py
diff --git a/ep_stamp_star.py b/ep_stamp_star.py
new file mode 100644
index 0000000..962cf55
--- /dev/null
+++ b/ep_stamp_star.py
@@ -0,0 +1,163 @@
+# 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 model_random
+import model_locus
+import model_allele
+import model_constraintpool
+
+ORDER_CONSTRAINT = 'orderconstaint'
+RADIUS_CONSTRAINT = 'radiusconstraint'
+LINE_WIDTH_CONSTRAINT = 'scaleconstraint'
+START_ANGLE_CONSTRAINT = 'dimoutconstraint'
+
+class StarStamp(model_allele.Allele):
+    """StarStamp:.
+    inv: self.radius >= 0.0
+    """
+
+    cdef = [{'bind'  : ORDER_CONSTRAINT,
+             'name'  : 'Number of nested disks',
+             'domain': model_constraintpool.INT_RANGE,
+             'min'   : 3, 'max': 17},
+            {'bind'  : RADIUS_CONSTRAINT,
+             'name'  : 'Radius of the filled cyclic polygon or circle',
+             'domain': model_constraintpool.FLOAT_RANGE,
+             'min'   : 0.01, 'max': 0.33},
+            {'bind'  : START_ANGLE_CONSTRAINT,
+             'name'  : 'Rotation of the stamp',
+             'domain': model_constraintpool.FLOAT_RANGE,
+             'min'   : -math.pi, 'max': math.pi},
+            {'bind'  : LINE_WIDTH_CONSTRAINT,
+             'name'  : 'Line width',
+             'domain': model_constraintpool.FLOAT_RANGE,
+             'min'   : 0.001, 'max': 0.025},
+           ]
+
+    def __init__(self, trunk, dummy):
+        """Constructor for a flip merger."""
+        super(StarStamp, self).__init__(trunk)
+        self.order = 1
+        self.radius = 0.1
+        self.start_angle = 0.0
+        self.line_width = 0.025
+
+    def __eq__(self, other):
+        """Equality based on radius."""
+        equal = isinstance(other, StarStamp) \
+                and self.order == other.order \
+                and self.radius == other.radius \
+                and self.start_angle == other.start_angle \
+                and self.line_width == other.line_width
+        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.randint_constrained(order_constraint)
+        radius_constraint = cpool.get(self, RADIUS_CONSTRAINT)
+        self.radius = model_random.uniform_constrained(radius_constraint)
+        start_angle_constraint = cpool.get(self, START_ANGLE_CONSTRAINT)
+        self.start_angle = model_random.uniform_constrained(start_angle_constraint)
+        line_width_constraint = cpool.get(self, LINE_WIDTH_CONSTRAINT)
+        self.line_width = model_random.uniform_constrained(line_width_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_discret_constrained(self.order, order_constraint)
+        radius_constraint = cpool.get(self, RADIUS_CONSTRAINT)
+        self.radius = model_random.jitter_constrained(self.radius, radius_constraint)
+        start_angle_constraint = cpool.get(self, START_ANGLE_CONSTRAINT)
+        self.start_angle = model_random.jitter_constrained(self.start_angle, start_angle_constraint)
+        line_width_constraint = cpool.get(self, LINE_WIDTH_CONSTRAINT)
+        self.line_width = model_random.jitter_constrained(self.line_width, line_width_constraint)
+
+    def swap_places(self):
+        """Nothing to do."""
+
+    def crossingover(self, other):
+        """
+        pre: isinstance(other, StarStamp)
+        pre: isinstance(self, StarStamp)
+        # 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 = StarStamp(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.start_angle = self.start_angle if cross_sequence[2] else other.start_angle
+        new_one.line_width = self.line_width if cross_sequence[3] else other.line_width
+        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
+        """
+        ctx.set_line_width(self.line_width)
+        factor = 2.0 * math.pi / float(self.order)
+#        rale = random.Random()
+#        rale.seed(self.order+100*self.line_width+100*self.start_angle)
+        for step in xrange(self.order + 1):
+            angle = factor * step + self.start_angle
+#            jitter = rale.uniform(0.9, 1.1)
+#            delta_x = jitter*self.radius * math.cos(angle)
+#            delta_y = jitter*self.radius * math.sin(angle)
+            delta_x = self.radius * math.cos(angle)
+            delta_y = self.radius * math.sin(angle)
+            ctx.move_to(point[0], point[1])
+            ctx.line_to(point[0]+delta_x, point[1]+delta_y)
+        ctx.stroke()
+
+    def explain(self):
+        """
+        post: len(__return__) == 3
+        """
+        str_start_angle = _('start angle: %4.3f') % self.start_angle
+        str_line_width = _('line width: %4.3f') % self.line_width
+        return _('Star stamp: number of rays: ') + str(self.order) \
+               + ', ' + str_line_width \
+               + ', ' + str_start_angle , \
+               None, \
+               None
+
+    def copy(self):
+        """A copy constructor.
+        post: isinstance(__return__, StarStamp)
+        # check for distinct references, needs to copy content, not references
+        post: __return__ is not self
+        """
+        new_one = StarStamp(self.get_trunk(), -1)
+        new_one.order = self.order
+        new_one.radius = self.radius
+        new_one.line_width = self.line_width
+        new_one.start_angle = self.start_angle
+        return new_one
diff --git a/model_constraintpool.py b/model_constraintpool.py
index e7e4e6d..e671af0 100644
--- a/model_constraintpool.py
+++ b/model_constraintpool.py
@@ -151,6 +151,7 @@ class ConstraintPool(object):
 #        self.set('*', 'modifiertypeconstraint', ['border', ])
 #        self.set('*', 'modifiertypeconstraint', ['rectangulartile', ])
 
+#        self.set('*', 'stamptypeconstraint', ['star',])
 #        self.set('*', 'stamptypeconstraint', ['disk',])
 #        self.set('*', 'stamptypeconstraint', ['filledcyclic',])
 #        self.set('*', 'stamptypeconstraint', ['svg',])
diff --git a/po/Kandid.pot b/po/Kandid.pot
index 9794292..633c596 100644
--- a/po/Kandid.pot
+++ b/po/Kandid.pot
@@ -8,7 +8,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2010-07-04 12:56+0200\n"
+"POT-Creation-Date: 2010-07-07 20:23+0200\n"
 "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
 "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
 "Language-Team: LANGUAGE <LL@li.org>\n"
@@ -194,6 +194,20 @@ msgstr ""
 msgid "Analogous color scheme"
 msgstr ""
 
+#: /home/strom/minimal/activities/Kandid.activity/ep_stamp_star.py:144
+#, python-format
+msgid "start angle: %4.3f"
+msgstr ""
+
+#: /home/strom/minimal/activities/Kandid.activity/ep_stamp_star.py:145
+#, python-format
+msgid "line width: %4.3f"
+msgstr ""
+
+#: /home/strom/minimal/activities/Kandid.activity/ep_stamp_star.py:146
+msgid "Star stamp: number of rays: "
+msgstr ""
+
 #: /home/strom/minimal/activities/Kandid.activity/ep_colorgamut_monchrome.py:69
 msgid "Monochromatic color scheme"
 msgstr ""