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author | buliabyak <buliabyak@users.sourceforge.net> | |
Wed, 14 Mar 2007 05:00:33 +0000 (05:00 +0000) | ||
committer | buliabyak <buliabyak@users.sourceforge.net> | |
Wed, 14 Mar 2007 05:00:33 +0000 (05:00 +0000) |
share/extensions/Makefile.am | patch | blob | history | |
share/extensions/spirograph.inx | [new file with mode: 0644] | patch | blob |
share/extensions/spirograph.py | [new file with mode: 0644] | patch | blob |
index f504655706af70cefff86682aa7947b48c9cba6d..256133d035aa82bfa82af644bbcf87aed0d5e258 100644 (file)
simplestyle.py \
sk2svg.sh \
SpSVG.pm \
+ spirograph.py\
+ spirograph.inx\
straightseg.py \
summersnight.py \
svg_and_media_zip_output.py \
diff --git a/share/extensions/spirograph.inx b/share/extensions/spirograph.inx
--- /dev/null
@@ -0,0 +1,24 @@
+<inkscape-extension>
+ <_name>Spirograph</_name>
+ <id>org.ekips.filter.spirograph</id>
+ <dependency type="executable" location="extensions">spirograph.py</dependency>
+ <dependency type="executable" location="extensions">inkex.py</dependency>
+ <param name="primaryr" type="float" min="0.0" max="1000.0" _gui-text="R - Ring Radius (px)">100.0</param>
+ <param name="secondaryr" type="float" min="0.0" max="1000.0" _gui-text="r - Gear Radius (px)">60.0</param>
+ <param name="penr" type="float" min="0.0" max="1000.0" _gui-text="d - Pen Radius (px)">50.0</param>
+ <param name="gearplacement" type="optiongroup" _gui-text="Gear Placement">
+ <option>Inside (Hypotrochoid)</option>
+ <option>Outside (Epitrochoid)</option>
+ </param>
+ <param name="rotation" type="float" min="-360.0" max="360.0" _gui-text="Rotation (deg)">0.0</param>
+ <param name="quality" type="int" min="1" max="100" _gui-text="Quality (Default = 16)">16</param>
+ <effect>
+ <object-type>all</object-type>
+ <effects-menu>
+ <submenu _name="Render"/>
+ </effects-menu>
+ </effect>
+ <script>
+ <command reldir="extensions" interpreter="python">spirograph.py</command>
+ </script>
+</inkscape-extension>
diff --git a/share/extensions/spirograph.py b/share/extensions/spirograph.py
--- /dev/null
@@ -0,0 +1,115 @@
+#!/usr/bin/env python
+'''
+Copyright (C) 2007 Joel Holdsworth joel@airwebreathe.org.uk
+
+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 2 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+'''
+import inkex, simplestyle, math
+
+class Spirograph(inkex.Effect):
+ def __init__(self):
+ inkex.Effect.__init__(self)
+ self.OptionParser.add_option("-R", "--primaryr",
+ action="store", type="float",
+ dest="primaryr", default=60.0,
+ help="The radius of the outer gear")
+ self.OptionParser.add_option("-r", "--secondaryr",
+ action="store", type="float",
+ dest="secondaryr", default=100.0,
+ help="The radius of the inner gear")
+ self.OptionParser.add_option("-d", "--penr",
+ action="store", type="float",
+ dest="penr", default=50.0,
+ help="The distance of the pen from the inner gear")
+ self.OptionParser.add_option("-p", "--gearplacement",
+ action="store", type="string",
+ dest="gearplacement", default=50.0,
+ help="Selects whether the gear is inside or outside the ring")
+ self.OptionParser.add_option("-a", "--rotation",
+ action="store", type="float",
+ dest="rotation", default=100.0,
+ help="The number of degrees to rotate the image by")
+ self.OptionParser.add_option("-q", "--quality",
+ action="store", type="int",
+ dest="quality", default=16,
+ help="The quality of the calculated output")
+ def effect(self):
+
+ if self.options.secondaryr == 0:
+ return
+ if self.options.quality == 0:
+ return
+
+ if(self.options.gearplacement.strip(' ').lower().startswith('outside')):
+ a = self.options.primaryr + self.options.secondaryr
+ flip = -1
+ else:
+ a = self.options.primaryr - self.options.secondaryr
+ flip = 1
+
+ ratio = a / self.options.secondaryr
+ if ratio == 0:
+ return
+ scale = 2 * math.pi / (ratio * self.options.quality)
+
+ rotation = 2 * math.pi * self.options.rotation / 180;
+
+ new = self.document.createElement('svg:path')
+ s = {'stroke-linejoin': 'miter', 'stroke-width': '1.0px',
+ 'stroke-opacity': '1.0', 'fill-opacity': '1.0',
+ 'stroke': '#000000', 'stroke-linecap': 'butt',
+ 'fill': 'none'}
+ new.setAttribute('style', simplestyle.formatStyle(s))
+
+ pathString = ''
+ maxPointCount = 1000
+
+ for i in range(maxPointCount):
+
+ theta = i * scale
+
+ x = a * math.cos(theta + rotation) + \
+ self.options.penr * math.cos(ratio * theta + rotation) * flip + \
+ self.view_center[0]
+ y = a * math.sin(theta + rotation) - \
+ self.options.penr * math.sin(ratio * theta + rotation) + \
+ self.view_center[1]
+
+ dx = (-a * math.sin(theta + rotation) - \
+ ratio * self.options.penr * math.sin(ratio * theta + rotation) * flip) * scale / 3
+ dy = (a * math.cos(theta + rotation) - \
+ ratio * self.options.penr * math.cos(ratio * theta + rotation)) * scale / 3
+
+ if i <= 0:
+ pathString += 'M ' + str(x) + ',' + str(y) + ' C ' + str(x + dx) + ',' + str(y + dy) + ' '
+ else:
+ pathString += str(x - dx) + ',' + str(y - dy) + ' ' + str(x) + ',' + str(y)
+
+ if math.fmod(i / ratio, self.options.quality) == 0 and i % self.options.quality == 0:
+ pathString += 'Z'
+ break
+ else:
+ if i == maxPointCount - 1:
+ pass # we reached the allowed maximum of points, stop here
+ else:
+ pathString += ' C ' + str(x + dx) + ',' + str(y + dy) + ' '
+
+
+ new.setAttribute('d', pathString)
+ self.current_layer.appendChild(new)
+
+e = Spirograph()
+e.affect()
+