added normal-distributed randomization

diff --git a/share/extensions/radiusrand.inx b/share/extensions/radiusrand.inx
index 88bfbe596c6ba9d423b6c9f886888ae0da47ba7f..d714d2218971db65bb7e0e06174dc0082dbfec3f 100644 (file)
--- a/share/extensions/radiusrand.inx
+++ b/share/extensions/radiusrand.inx
@@ -6,6 +6,7 @@
        <param name="radius" type="float" min="0.0" max="1000.0" _gui-text="Radius">100.0</param>
        <param name="end" type="boolean" _gui-text="Randomize nodes">true</param>
        <param name="ctrl" type="boolean" _gui-text="Randomize node handles">false</param>
+       <param name="norm" type="boolean" _gui-text="Use normal distribution">true</param>
    <effect>
                <object-type>path</object-type>
                 <effects-menu>

diff --git a/share/extensions/radiusrand.py b/share/extensions/radiusrand.py
index 97e9aed41f381d25e4842f93bfc3b2dfcc6df324..27420a85d48aa4458e070e3c3556588d3c8424d0 100755 (executable)
--- a/share/extensions/radiusrand.py
+++ b/share/extensions/radiusrand.py
@@ -18,8 +18,11 @@ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 '''
 import random, math, inkex, cubicsuperpath
 
-def randomize((x, y), r):
-       r = random.uniform(0.0,r)
+def randomize((x, y), r, norm):
+       if norm:
+           r = abs(random.normalvariate(0.0,0.5*r))
+       else:
+           r = random.uniform(0.0,r)
        a = random.uniform(0.0,2*math.pi)
        x += math.cos(a)*r
        y += math.sin(a)*r
@@ -40,6 +43,10 @@ class RadiusRandomize(inkex.Effect):
                                                action="store", type="inkbool", 
                                                dest="end", default=True,
                                                help="Randomize nodes")
+               self.OptionParser.add_option("-n", "--norm",
+                                               action="store", type="inkbool", 
+                                               dest="norm", default=True,
+                                               help="Use normal distribution")
        def effect(self):
                for id, node in self.selected.iteritems():
                        if node.tagName == 'path':
@@ -48,7 +55,7 @@ class RadiusRandomize(inkex.Effect):
                                for subpath in p:
                                        for csp in subpath:
                                                if self.options.end:
-                                                       delta=randomize([0,0], self.options.radius)
+                                                       delta=randomize([0,0], self.options.radius, self.options.norm)
                                                        csp[0][0]+=delta[0] 
                                                        csp[0][1]+=delta[1] 
                                                        csp[1][0]+=delta[0] 
@@ -56,8 +63,8 @@ class RadiusRandomize(inkex.Effect):
                                                        csp[2][0]+=delta[0] 
                                                        csp[2][1]+=delta[1] 
                                                if self.options.ctrl:
-                                                       csp[0]=randomize(csp[0], self.options.radius)
-                                                       csp[2]=randomize(csp[2], self.options.radius)
+                                                       csp[0]=randomize(csp[0], self.options.radius, self.options.norm)
+                                                       csp[2]=randomize(csp[2], self.options.radius, self.options.norm)
                                d.value = cubicsuperpath.formatPath(p)
 
 e = RadiusRandomize()