Added Terry Brown's Edge3d scripts.

(bzr r3003)

2 files changed, 180 insertions, 0 deletions

diff --git a/share/extensions/edge3d.inx b/share/extensions/edge3d.inx
new file mode 100644
index 000000000..6bd4c928c
--- /dev/null
+++ b/share/extensions/edge3d.inx
@@ -0,0 +1,29 @@
+<inkscape-extension>
+  <_name>Edge 3D</_name>
+  <id>org.greygreen.inkscape.effects.edge3d</id>
+  <dependency type="executable" location="extensions">edge3d.py</dependency>
+  <dependency type="executable" location="extensions">inkex.py</dependency>
+  <param name="angle" type="float" min="0.0" max="360.0"
+	 _gui-text="Illumination Angle">45</param>
+  <param name="shades" type="int" min="2" max="360"
+	 _gui-text="Shades">2</param>
+  <param name="bw" type="boolean"
+	 _gui-text="Only black and white">0</param>
+  <param name="thick" type="float" min="1.0" max="50.0"
+	 _gui-text="Stroke width">10</param>
+  <param name="stddev" type="float" min="1.0" max="100.0"
+	 _gui-text="Blur stdDeviation">5</param>
+  <param name="blurwidth" type="float" min="1.0" max="10.0"
+	 _gui-text="Blur width">2</param>
+  <param name="blurheight" type="float" min="1.0" max="10.0"
+	 _gui-text="Blur height">2</param>
+  <effect>
+    <object-type>path</object-type>
+    <effects-menu>
+      <submenu _name="Modify Path"/>
+    </effects-menu>
+  </effect>
+  <script>
+    <command reldir="extensions" interpreter="python">edge3d.py</command>
+  </script>
+</inkscape-extension>
diff --git a/share/extensions/edge3d.py b/share/extensions/edge3d.py
new file mode 100644
index 000000000..f48dd2f4f
--- /dev/null
+++ b/share/extensions/edge3d.py
@@ -0,0 +1,151 @@
+#!/usr/bin/env python 
+'''
+Copyright (C) 2007 Terry Brown, terry_n_brown@yahoo.com
+
+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, simplepath, sys
+from math import degrees, atan2
+
+class Edge3d(inkex.Effect):
+    def __init__(self):
+        inkex.Effect.__init__(self)
+        opts = [('-a', '--angle', 'float', 'angle', 45.0,
+                 'angle of illumination, clockwise, 45 = upper right'),
+                ('-d', '--stddev', 'float', 'stddev', 5.0,
+                 'stdDeviation for Gaussian Blur'),
+                ('-H', '--blurheight', 'float', 'blurheight', 2.0,
+                 'height for Gaussian Blur'),
+                ('-W', '--blurwidth', 'float', 'blurwidth', 2.0,
+                 'width for Gaussian Blur'),
+                ('-s', '--shades', 'int', 'shades', 2,
+                 'shades, 2 = black and white, 3 = black, grey, white, etc.'),
+                ('-b', '--bw', 'inkbool', 'bw', False,
+                 'black and white, create only the fully black and white wedges'),
+                ('-p', '--thick', 'float', 'thick', 10.,
+                 'stroke-width for path pieces'),
+                ]
+        for o in opts:
+            self.OptionParser.add_option(o[0], o[1], action="store", type=o[2],
+                                         dest=o[3], default=o[4], help=o[5])
+
+    def angleBetween(self, start, end, angle):
+        """Return true if angle (degrees, clockwise, 0 = up/north) is between
+           angles start and end"""
+        def f(x):
+            """Maybe add 360 to x"""
+            if x < 0: return x + 360.
+            return x
+        # rotate all inputs by start, => start = 0
+        a = f(f(angle) - f(start))
+        e = f(f(end) - f(start))
+        return a < e
+
+    def effectX(self):
+        # size of a wedge for shade i, wedges come in pairs
+        delta = 360. / self.options.shades / 2.
+
+        for shade in range(0, self.options.shades):
+            if self.options.bw and shade > 0 and shade < self.options.shades-1:
+                continue
+            self.start = [self.options.angle - delta * (shade+1)]
+            self.end = [self.options.angle - delta * (shade)]
+            self.start.append( self.options.angle + delta * (shade) )
+            self.end.append( self.options.angle + delta * (shade+1) )
+            self.makeShade(float(shade)/float(self.options.shades-1))
+
+    def effect(self):
+        """Check each internode to see if it's in one of the wedges
+           for the current shade.  shade is a floating point 0-1 white-black"""
+        # size of a wedge for shade i, wedges come in pairs
+        delta = 360. / self.options.shades / 2.
+        for id, node in self.selected.iteritems():
+            if node.tagName == 'path':
+                d = node.attributes.getNamedItem('d')
+                p = simplepath.parsePath(d.value)
+                g = None
+                for shade in range(0, self.options.shades):
+                    if (self.options.bw and shade > 0 and
+                        shade < self.options.shades - 1):
+                        continue
+                    self.start = [self.options.angle - delta * (shade+1)]
+                    self.end = [self.options.angle - delta * (shade)]
+                    self.start.append( self.options.angle + delta * (shade) )
+                    self.end.append( self.options.angle + delta * (shade+1) )
+                    level=float(shade)/float(self.options.shades-1)
+                    last = []
+                    result = []
+                    for cmd,params in p:
+                        if cmd == 'Z':
+                            last = []
+                            continue
+                        if last:
+                            a = degrees(atan2(params[-2:][0] - last[0],
+                                              params[-2:][1] - last[1]))
+                            if (self.angleBetween(self.start[0], self.end[0], a) or
+                                self.angleBetween(self.start[1], self.end[1], a)):
+                                result.append(('M', last))
+                                result.append((cmd, params))
+                        last = params[-2:]
+                    if result:
+                        if not g:
+                            g = self.getGroup(node)
+                        nn = g.appendChild(node.cloneNode(True))
+                        d2 = nn.attributes.getNamedItem('d')
+                        d2.value = simplepath.formatPath(result)
+    
+                        a = nn.ownerDocument.createAttribute('style')
+                        col = 255 - int(255. * level)
+                        a.value = 'fill:none;stroke:#%02x%02x%02x;stroke-opacity:1;stroke-width:10;%s' % ((col,)*3 + (self.filtId,))
+                        nn.attributes.setNamedItem(a)
+ 
+    def setAttr(self, node, name, value):
+        attr = node.ownerDocument.createAttribute(name)
+        attr.value = value
+        node.attributes.setNamedItem(attr)
+        
+    def getGroup(self, node):
+        defs = node.ownerDocument.getElementsByTagName('defs')
+        if defs:
+            defs = defs[0]
+        if defs:
+            # make a clipped group, clip with clone of original, clipped group
+            # include original and group of paths
+            clip = defs.appendChild(node.ownerDocument.createElement('clipPath'))
+            clip.appendChild(node.cloneNode(True))
+            clipId = self.uniqueId('clipPath')
+            self.setAttr(clip, 'id', clipId)
+            clipG = node.parentNode.appendChild(node.ownerDocument.createElement('g'))
+            clipG.appendChild(node)
+            g = clipG.appendChild(node.ownerDocument.createElement('g'))
+            self.setAttr(clipG, 'clip-path', 'url(#'+clipId+')')
+            # make a blur filter reference by the style of each path
+            filt = defs.appendChild(node.ownerDocument.createElement('filter'))
+            filtId = self.uniqueId('filter')
+            for k, v in [('id', filtId), ('height', str(self.options.blurheight)),
+                         ('width', str(self.options.blurwidth)),
+                         ('x', '-0.5'), ('y', '-0.5')]:
+                self.setAttr(filt, k, v)
+            fe = filt.appendChild(node.ownerDocument.createElement('feGaussianBlur'))
+            self.setAttr(fe, 'stdDeviation', str(self.options.stddev))
+            self.filtId = 'filter:url(#%s);' % filtId
+        else:
+            # can't find defs, just group paths
+            g = node.parentNode.appendChild(node.ownerDocument.createElement('g'))
+
+        return g
+
+e = Edge3d()
+e.affect()