From 8e5a1520cd5e901f514c382ad17e77d64727896a Mon Sep 17 00:00:00 2001
From: Michael Schwarz <michi.schwarz@gmail.com>
Date: Wed, 10 Dec 2014 22:13:34 +0100
Subject: Moved DXF export scripts to separate directory.
---
support/dxf_export/__init__.py | 0
support/dxf_export/__main__.py | 95 +++++
support/dxf_export/better_dxf_outlines.py | 123 ++++++
support/dxf_export/bezmisc.py | 274 +++++++++++++
support/dxf_export/cspsubdiv.py | 37 ++
support/dxf_export/cubicsuperpath.py | 169 ++++++++
support/dxf_export/dxf_templates.py | 645 ++++++++++++++++++++++++++++++
support/dxf_export/ffgeom.py | 141 +++++++
support/dxf_export/inkex.py | 241 +++++++++++
support/dxf_export/simplepath.py | 212 ++++++++++
support/dxf_export/simplestyle.py | 244 +++++++++++
support/dxf_export/simpletransform.py | 241 +++++++++++
12 files changed, 2422 insertions(+)
create mode 100644 support/dxf_export/__init__.py
create mode 100644 support/dxf_export/__main__.py
create mode 100755 support/dxf_export/better_dxf_outlines.py
create mode 100755 support/dxf_export/bezmisc.py
create mode 100755 support/dxf_export/cspsubdiv.py
create mode 100755 support/dxf_export/cubicsuperpath.py
create mode 100755 support/dxf_export/dxf_templates.py
create mode 100755 support/dxf_export/ffgeom.py
create mode 100755 support/dxf_export/inkex.py
create mode 100755 support/dxf_export/simplepath.py
create mode 100755 support/dxf_export/simplestyle.py
create mode 100755 support/dxf_export/simpletransform.py
(limited to 'support')
diff --git a/support/dxf_export/__init__.py b/support/dxf_export/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/support/dxf_export/__main__.py b/support/dxf_export/__main__.py
new file mode 100644
index 0000000..ea6c7ad
--- /dev/null
+++ b/support/dxf_export/__main__.py
@@ -0,0 +1,95 @@
+import sys, os, xml.etree.ElementTree, subprocess, tempfile, contextlib, shutil
+import better_dxf_outlines
+
+
+@contextlib.contextmanager
+def TemporaryDirectory():
+ dir = tempfile.mkdtemp()
+
+ try:
+ yield dir
+ finally:
+ shutil.rmtree(dir)
+
+
+def _export_dxf(in_path, out_path):
+ dxf_export = better_dxf_outlines.MyEffect()
+ dxf_export.affect(args = [in_path], output = False)
+
+ with open(out_path, 'w') as file:
+ file.write(dxf_export.dxf)
+
+
+def _get_inkscape_layer_count(svg_path):
+ document = xml.etree.ElementTree.parse(svg_path)
+ layers = document.findall(
+ '{http://www.w3.org/2000/svg}g[@{http://www.inkscape.org/namespaces/inkscape}groupmode="layer"]')
+
+ return len(layers)
+
+
+def _command(args):
+ process = subprocess.Popen(args)
+ process.wait()
+
+ assert not process.returncode
+
+
+def _inkscape(svg_path, verbs):
+ def iter_args():
+ yield os.environ['INKSCAPE']
+
+ for i in verbs:
+ yield '--verb'
+ yield i
+
+ yield svg_path
+
+ _command(list(iter_args()))
+
+
+def _unfuck_svg_document(temp_svg_path):
+ """
+ Unfucks an SVG document so is can be processed by the better_dxf_export plugin.
+ """
+
+ layers_count = _get_inkscape_layer_count(temp_svg_path)
+
+ def iter_inkscape_verbs():
+ yield 'LayerUnlockAll'
+ yield 'LayerShowAll'
+
+ # Go to the first layer
+ for _ in range(layers_count):
+ yield 'LayerPrev'
+
+ for _ in range(layers_count):
+ yield 'EditSelectAll'
+ yield 'ObjectToPath'
+ yield 'EditSelectAll'
+ yield 'SelectionUnGroup'
+ yield 'EditSelectAll'
+ yield 'StrokeToPath'
+ yield 'EditSelectAll'
+ yield 'SelectionUnion'
+ yield 'LayerNext'
+
+ yield 'FileSave'
+ yield 'FileClose'
+ yield 'FileQuit'
+
+ _inkscape(temp_svg_path, list(iter_inkscape_verbs()))
+
+
+def main(in_path, out_path):
+ with TemporaryDirectory() as temp_dir:
+ temp_svg_path = os.path.join(temp_dir, 'temp.svg')
+
+ shutil.copyfile(in_path, temp_svg_path)
+
+ _unfuck_svg_document(temp_svg_path)
+
+ _export_dxf(temp_svg_path, out_path)
+
+
+main(*sys.argv[1:])
diff --git a/support/dxf_export/better_dxf_outlines.py b/support/dxf_export/better_dxf_outlines.py
new file mode 100755
index 0000000..19ec6c8
--- /dev/null
+++ b/support/dxf_export/better_dxf_outlines.py
@@ -0,0 +1,123 @@
+#!/usr/bin/env python
+'''
+Copyright (C) 2005,2007 Aaron Spike, aaron@ekips.org
+- template dxf_outlines.dxf added Feb 2008 by Alvin Penner, penner@vaxxine.com
+- layers, transformation, flattening added April 2008 by Bob Cook, bob@bobcookdev.com
+- bug fix for xpath() calls added February 2009 by Bob Cook, bob@bobcookdev.com
+- max value of 10 on path flattening, August 2011 by Bob Cook, bob@bobcookdev.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, simpletransform, cubicsuperpath, cspsubdiv, dxf_templates, re
+
+class MyEffect(inkex.Effect):
+
+ def __init__(self):
+
+ inkex.Effect.__init__(self)
+ self.dxf = ''
+ self.handle = 255
+ self.flatness = 0.1
+
+ def output(self):
+ print self.dxf
+
+ def dxf_add(self, str):
+ self.dxf += str
+
+ def dxf_insert_code(self, code, value):
+ self.dxf += code + "\n" + value + "\n"
+
+ def dxf_line(self,layer,csp):
+ self.dxf_insert_code( '0', 'LINE' )
+ self.dxf_insert_code( '8', layer )
+ self.dxf_insert_code( '62', '4' )
+ self.dxf_insert_code( '5', '%x' % self.handle )
+ self.dxf_insert_code( '100', 'AcDbEntity' )
+ self.dxf_insert_code( '100', 'AcDbLine' )
+ self.dxf_insert_code( '10', '%f' % csp[0][0] )
+ self.dxf_insert_code( '20', '%f' % csp[0][1] )
+ self.dxf_insert_code( '30', '0.0' )
+ self.dxf_insert_code( '11', '%f' % csp[1][0] )
+ self.dxf_insert_code( '21', '%f' % csp[1][1] )
+ self.dxf_insert_code( '31', '0.0' )
+
+ def dxf_point(self,layer,x,y):
+ self.dxf_insert_code( '0', 'POINT' )
+ self.dxf_insert_code( '8', layer )
+ self.dxf_insert_code( '62', '4' )
+ self.dxf_insert_code( '5', '%x' % self.handle )
+ self.dxf_insert_code( '100', 'AcDbEntity' )
+ self.dxf_insert_code( '100', 'AcDbPoint' )
+ self.dxf_insert_code( '10', '%f' % x )
+ self.dxf_insert_code( '20', '%f' % y )
+ self.dxf_insert_code( '30', '0.0' )
+
+ def dxf_path_to_lines(self,layer,p):
+ f = self.flatness
+ is_flat = 0
+ while is_flat < 1:
+ if f > 10:
+ break
+ try:
+ cspsubdiv.cspsubdiv(p, f)
+ is_flat = 1
+ except:
+ f += 0.1
+
+ for sub in p:
+ for i in range(len(sub)-1):
+ self.handle += 1
+ s = sub[i]
+ e = sub[i+1]
+ self.dxf_line(layer,[s[1],e[1]])
+
+ def dxf_path_to_point(self,layer,p):
+ bbox = simpletransform.roughBBox(p)
+ x = (bbox[0] + bbox[1]) / 2
+ y = (bbox[2] + bbox[3]) / 2
+ self.dxf_point(layer,x,y)
+
+ def effect(self):
+ self.dxf_insert_code( '999', 'Inkscape export via "Better DXF Output" (bob@bobcookdev.com)' )
+ self.dxf_add( dxf_templates.r14_header )
+
+ scale = 25.4/90.0
+ h = inkex.unittouu(self.document.getroot().xpath('@height',namespaces=inkex.NSS)[0])
+
+ path = '//svg:path'
+ for node in self.document.getroot().xpath(path,namespaces=inkex.NSS):
+
+ layer = node.getparent().get(inkex.addNS('label','inkscape'))
+ if layer == None:
+ layer = 'Layer 1'
+
+ d = node.get('d')
+ p = cubicsuperpath.parsePath(d)
+
+ t = node.get('transform')
+ if t != None:
+ m = simpletransform.parseTransform(t)
+ simpletransform.applyTransformToPath(m,p)
+
+ m = [[scale,0,0],[0,-scale,h*scale]]
+ simpletransform.applyTransformToPath(m,p)
+
+ if re.search('drill$',layer,re.I) == None:
+ self.dxf_path_to_lines(layer,p)
+ else:
+ self.dxf_path_to_point(layer,p)
+
+ self.dxf_add( dxf_templates.r14_footer )
diff --git a/support/dxf_export/bezmisc.py b/support/dxf_export/bezmisc.py
new file mode 100755
index 0000000..e663fa6
--- /dev/null
+++ b/support/dxf_export/bezmisc.py
@@ -0,0 +1,274 @@
+#!/usr/bin/env python
+'''
+Copyright (C) 2010 Nick Drobchenko, nick@cnc-club.ru
+Copyright (C) 2005 Aaron Spike, aaron@ekips.org
+
+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 math, cmath
+
+def rootWrapper(a,b,c,d):
+ if a:
+ # Monics formula see http://en.wikipedia.org/wiki/Cubic_function#Monic_formula_of_roots
+ a,b,c = (b/a, c/a, d/a)
+ m = 2.0*a**3 - 9.0*a*b + 27.0*c
+ k = a**2 - 3.0*b
+ n = m**2 - 4.0*k**3
+ w1 = -.5 + .5*cmath.sqrt(-3.0)
+ w2 = -.5 - .5*cmath.sqrt(-3.0)
+ if n < 0:
+ m1 = pow(complex((m+cmath.sqrt(n))/2),1./3)
+ n1 = pow(complex((m-cmath.sqrt(n))/2),1./3)
+ else:
+ if m+math.sqrt(n) < 0:
+ m1 = -pow(-(m+math.sqrt(n))/2,1./3)
+ else:
+ m1 = pow((m+math.sqrt(n))/2,1./3)
+ if m-math.sqrt(n) < 0:
+ n1 = -pow(-(m-math.sqrt(n))/2,1./3)
+ else:
+ n1 = pow((m-math.sqrt(n))/2,1./3)
+ x1 = -1./3 * (a + m1 + n1)
+ x2 = -1./3 * (a + w1*m1 + w2*n1)
+ x3 = -1./3 * (a + w2*m1 + w1*n1)
+ return (x1,x2,x3)
+ elif b:
+ det=c**2.0-4.0*b*d
+ if det:
+ return (-c+cmath.sqrt(det))/(2.0*b),(-c-cmath.sqrt(det))/(2.0*b)
+ else:
+ return -c/(2.0*b),
+ elif c:
+ return 1.0*(-d/c),
+ return ()
+
+def bezierparameterize(((bx0,by0),(bx1,by1),(bx2,by2),(bx3,by3))):
+ #parametric bezier
+ x0=bx0
+ y0=by0
+ cx=3*(bx1-x0)
+ bx=3*(bx2-bx1)-cx
+ ax=bx3-x0-cx-bx
+ cy=3*(by1-y0)
+ by=3*(by2-by1)-cy
+ ay=by3-y0-cy-by
+
+ return ax,ay,bx,by,cx,cy,x0,y0
+ #ax,ay,bx,by,cx,cy,x0,y0=bezierparameterize(((bx0,by0),(bx1,by1),(bx2,by2),(bx3,by3)))
+
+def linebezierintersect(((lx1,ly1),(lx2,ly2)),((bx0,by0),(bx1,by1),(bx2,by2),(bx3,by3))):
+ #parametric line
+ dd=lx1
+ cc=lx2-lx1
+ bb=ly1
+ aa=ly2-ly1
+
+ if aa:
+ coef1=cc/aa
+ coef2=1
+ else:
+ coef1=1
+ coef2=aa/cc
+
+ ax,ay,bx,by,cx,cy,x0,y0=bezierparameterize(((bx0,by0),(bx1,by1),(bx2,by2),(bx3,by3)))
+ #cubic intersection coefficients
+ a=coef1*ay-coef2*ax
+ b=coef1*by-coef2*bx
+ c=coef1*cy-coef2*cx
+ d=coef1*(y0-bb)-coef2*(x0-dd)
+
+ roots = rootWrapper(a,b,c,d)
+ retval = []
+ for i in roots:
+ if type(i) is complex and i.imag==0:
+ i = i.real
+ if type(i) is not complex and 0<=i<=1:
+ retval.append(bezierpointatt(((bx0,by0),(bx1,by1),(bx2,by2),(bx3,by3)),i))
+ return retval
+
+def bezierpointatt(((bx0,by0),(bx1,by1),(bx2,by2),(bx3,by3)),t):
+ ax,ay,bx,by,cx,cy,x0,y0=bezierparameterize(((bx0,by0),(bx1,by1),(bx2,by2),(bx3,by3)))
+ x=ax*(t**3)+bx*(t**2)+cx*t+x0
+ y=ay*(t**3)+by*(t**2)+cy*t+y0
+ return x,y
+
+def bezierslopeatt(((bx0,by0),(bx1,by1),(bx2,by2),(bx3,by3)),t):
+ ax,ay,bx,by,cx,cy,x0,y0=bezierparameterize(((bx0,by0),(bx1,by1),(bx2,by2),(bx3,by3)))
+ dx=3*ax*(t**2)+2*bx*t+cx
+ dy=3*ay*(t**2)+2*by*t+cy
+ return dx,dy
+
+def beziertatslope(((bx0,by0),(bx1,by1),(bx2,by2),(bx3,by3)),(dy,dx)):
+ ax,ay,bx,by,cx,cy,x0,y0=bezierparameterize(((bx0,by0),(bx1,by1),(bx2,by2),(bx3,by3)))
+ #quadratic coefficents of slope formula
+ if dx:
+ slope = 1.0*(dy/dx)
+ a=3*ay-3*ax*slope
+ b=2*by-2*bx*slope
+ c=cy-cx*slope
+ elif dy:
+ slope = 1.0*(dx/dy)
+ a=3*ax-3*ay*slope
+ b=2*bx-2*by*slope
+ c=cx-cy*slope
+ else:
+ return []
+
+ roots = rootWrapper(0,a,b,c)
+ retval = []
+ for i in roots:
+ if type(i) is complex and i.imag==0:
+ i = i.real
+ if type(i) is not complex and 0<=i<=1:
+ retval.append(i)
+ return retval
+
+def tpoint((x1,y1),(x2,y2),t):
+ return x1+t*(x2-x1),y1+t*(y2-y1)
+def beziersplitatt(((bx0,by0),(bx1,by1),(bx2,by2),(bx3,by3)),t):
+ m1=tpoint((bx0,by0),(bx1,by1),t)
+ m2=tpoint((bx1,by1),(bx2,by2),t)
+ m3=tpoint((bx2,by2),(bx3,by3),t)
+ m4=tpoint(m1,m2,t)
+ m5=tpoint(m2,m3,t)
+ m=tpoint(m4,m5,t)
+
+ return ((bx0,by0),m1,m4,m),(m,m5,m3,(bx3,by3))
+
+'''
+Approximating the arc length of a bezier curve
+according to <http://www.cit.gu.edu.au/~anthony/info/graphics/bezier.curves>
+
+if:
+ L1 = |P0 P1| +|P1 P2| +|P2 P3|
+ L0 = |P0 P3|
+then:
+ L = 1/2*L0 + 1/2*L1
+ ERR = L1-L0
+ERR approaches 0 as the number of subdivisions (m) increases
+ 2^-4m
+
+Reference:
+Jens Gravesen <gravesen@mat.dth.dk>
+"Adaptive subdivision and the length of Bezier curves"
+mat-report no. 1992-10, Mathematical Institute, The Technical
+University of Denmark.
+'''
+def pointdistance((x1,y1),(x2,y2)):
+ return math.sqrt(((x2 - x1) ** 2) + ((y2 - y1) ** 2))
+def Gravesen_addifclose(b, len, error = 0.001):
+ box = 0
+ for i in range(1,4):
+ box += pointdistance(b[i-1], b[i])
+ chord = pointdistance(b[0], b[3])
+ if (box - chord) > error:
+ first, second = beziersplitatt(b, 0.5)
+ Gravesen_addifclose(first, len, error)
+ Gravesen_addifclose(second, len, error)
+ else:
+ len[0] += (box / 2.0) + (chord / 2.0)
+def bezierlengthGravesen(b, error = 0.001):
+ len = [0]
+ Gravesen_addifclose(b, len, error)
+ return len[0]
+
+# balf = Bezier Arc Length Function
+balfax,balfbx,balfcx,balfay,balfby,balfcy = 0,0,0,0,0,0
+def balf(t):
+ retval = (balfax*(t**2) + balfbx*t + balfcx)**2 + (balfay*(t**2) + balfby*t + balfcy)**2
+ return math.sqrt(retval)
+
+def Simpson(f, a, b, n_limit, tolerance):
+ n = 2
+ multiplier = (b - a)/6.0
+ endsum = f(a) + f(b)
+ interval = (b - a)/2.0
+ asum = 0.0
+ bsum = f(a + interval)
+ est1 = multiplier * (endsum + (2.0 * asum) + (4.0 * bsum))
+ est0 = 2.0 * est1
+ #print multiplier, endsum, interval, asum, bsum, est1, est0
+ while n < n_limit and abs(est1 - est0) > tolerance:
+ n *= 2
+ multiplier /= 2.0
+ interval /= 2.0
+ asum += bsum
+ bsum = 0.0
+ est0 = est1
+ for i in xrange(1, n, 2):
+ bsum += f(a + (i * interval))
+ est1 = multiplier * (endsum + (2.0 * asum) + (4.0 * bsum))
+ #print multiplier, endsum, interval, asum, bsum, est1, est0
+ return est1
+
+def bezierlengthSimpson(((bx0,by0),(bx1,by1),(bx2,by2),(bx3,by3)), tolerance = 0.001):
+ global balfax,balfbx,balfcx,balfay,balfby,balfcy
+ ax,ay,bx,by,cx,cy,x0,y0=bezierparameterize(((bx0,by0),(bx1,by1),(bx2,by2),(bx3,by3)))
+ balfax,balfbx,balfcx,balfay,balfby,balfcy = 3*ax,2*bx,cx,3*ay,2*by,cy
+ return Simpson(balf, 0.0, 1.0, 4096, tolerance)
+
+def beziertatlength(((bx0,by0),(bx1,by1),(bx2,by2),(bx3,by3)), l = 0.5, tolerance = 0.001):
+ global balfax,balfbx,balfcx,balfay,balfby,balfcy
+ ax,ay,bx,by,cx,cy,x0,y0=bezierparameterize(((bx0,by0),(bx1,by1),(bx2,by2),(bx3,by3)))
+ balfax,balfbx,balfcx,balfay,balfby,balfcy = 3*ax,2*bx,cx,3*ay,2*by,cy
+ t = 1.0
+ tdiv = t
+ curlen = Simpson(balf, 0.0, t, 4096, tolerance)
+ targetlen = l * curlen
+ diff = curlen - targetlen
+ while abs(diff) > tolerance:
+ tdiv /= 2.0
+ if diff < 0:
+ t += tdiv
+ else:
+ t -= tdiv
+ curlen = Simpson(balf, 0.0, t, 4096, tolerance)
+ diff = curlen - targetlen
+ return t
+
+#default bezier length method
+bezierlength = bezierlengthSimpson
+
+if __name__ == '__main__':
+ import timing
+ #print linebezierintersect(((,),(,)),((,),(,),(,),(,)))
+ #print linebezierintersect(((0,1),(0,-1)),((-1,0),(-.5,0),(.5,0),(1,0)))
+ tol = 0.00000001
+ curves = [((0,0),(1,5),(4,5),(5,5)),
+ ((0,0),(0,0),(5,0),(10,0)),
+ ((0,0),(0,0),(5,1),(10,0)),
+ ((-10,0),(0,0),(10,0),(10,10)),
+ ((15,10),(0,0),(10,0),(-5,10))]
+ '''
+ for curve in curves:
+ timing.start()
+ g = bezierlengthGravesen(curve,tol)
+ timing.finish()
+ gt = timing.micro()
+
+ timing.start()
+ s = bezierlengthSimpson(curve,tol)
+ timing.finish()
+ st = timing.micro()
+
+ print g, gt
+ print s, st
+ '''
+ for curve in curves:
+ print beziertatlength(curve,0.5)
+
+
+# vim: expandtab shiftwidth=4 tabstop=8 softtabstop=4 encoding=utf-8 textwidth=99
diff --git a/support/dxf_export/cspsubdiv.py b/support/dxf_export/cspsubdiv.py
new file mode 100755
index 0000000..c34236a
--- /dev/null
+++ b/support/dxf_export/cspsubdiv.py
@@ -0,0 +1,37 @@
+#!/usr/bin/env python
+from bezmisc import *
+from ffgeom import *
+
+def maxdist(((p0x,p0y),(p1x,p1y),(p2x,p2y),(p3x,p3y))):
+ p0 = Point(p0x,p0y)
+ p1 = Point(p1x,p1y)
+ p2 = Point(p2x,p2y)
+ p3 = Point(p3x,p3y)
+
+ s1 = Segment(p0,p3)
+ return max(s1.distanceToPoint(p1),s1.distanceToPoint(p2))
+
+
+def cspsubdiv(csp,flat):
+ for sp in csp:
+ subdiv(sp,flat)
+
+def subdiv(sp,flat,i=1):
+ while i < len(sp):
+ p0 = sp[i-1][1]
+ p1 = sp[i-1][2]
+ p2 = sp[i][0]
+ p3 = sp[i][1]
+
+ b = (p0,p1,p2,p3)
+ m = maxdist(b)
+ if m <= flat:
+ i += 1
+ else:
+ one, two = beziersplitatt(b,0.5)
+ sp[i-1][2] = one[1]
+ sp[i][0] = two[2]
+ p = [one[2],one[3],two[1]]
+ sp[i:1] = [p]
+
+# vim: expandtab shiftwidth=4 tabstop=8 softtabstop=4 fileencoding=utf-8 textwidth=99
diff --git a/support/dxf_export/cubicsuperpath.py b/support/dxf_export/cubicsuperpath.py
new file mode 100755
index 0000000..af61acb
--- /dev/null
+++ b/support/dxf_export/cubicsuperpath.py
@@ -0,0 +1,169 @@
+#!/usr/bin/env python
+"""
+cubicsuperpath.py
+
+Copyright (C) 2005 Aaron Spike, aaron@ekips.org
+
+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 simplepath
+from math import *
+
+def matprod(mlist):
+ prod=mlist[0]
+ for m in mlist[1:]:
+ a00=prod[0][0]*m[0][0]+prod[0][1]*m[1][0]
+ a01=prod[0][0]*m[0][1]+prod[0][1]*m[1][1]
+ a10=prod[1][0]*m[0][0]+prod[1][1]*m[1][0]
+ a11=prod[1][0]*m[0][1]+prod[1][1]*m[1][1]
+ prod=[[a00,a01],[a10,a11]]
+ return prod
+def rotmat(teta):
+ return [[cos(teta),-sin(teta)],[sin(teta),cos(teta)]]
+def applymat(mat, pt):
+ x=mat[0][0]*pt[0]+mat[0][1]*pt[1]
+ y=mat[1][0]*pt[0]+mat[1][1]*pt[1]
+ pt[0]=x
+ pt[1]=y
+def norm(pt):
+ return sqrt(pt[0]*pt[0]+pt[1]*pt[1])
+
+def ArcToPath(p1,params):
+ A=p1[:]
+ rx,ry,teta,longflag,sweepflag,x2,y2=params[:]
+ teta = teta*pi/180.0
+ B=[x2,y2]
+ if rx==0 or ry==0:
+ return([[A,A,A],[B,B,B]])
+ mat=matprod((rotmat(teta),[[1/rx,0],[0,1/ry]],rotmat(-teta)))
+ applymat(mat, A)
+ applymat(mat, B)
+ k=[-(B[1]-A[1]),B[0]-A[0]]
+ d=k[0]*k[0]+k[1]*k[1]
+ k[0]/=sqrt(d)
+ k[1]/=sqrt(d)
+ d=sqrt(max(0,1-d/4))
+ if longflag==sweepflag:
+ d*=-1
+ O=[(B[0]+A[0])/2+d*k[0],(B[1]+A[1])/2+d*k[1]]
+ OA=[A[0]-O[0],A[1]-O[1]]
+ OB=[B[0]-O[0],B[1]-O[1]]
+ start=acos(OA[0]/norm(OA))
+ if OA[1]<0:
+ start*=-1
+ end=acos(OB[0]/norm(OB))
+ if OB[1]<0:
+ end*=-1
+
+ if sweepflag and start>end:
+ end +=2*pi
+ if (not sweepflag) and start<end:
+ end -=2*pi
+
+ NbSectors=int(abs(start-end)*2/pi)+1
+ dTeta=(end-start)/NbSectors
+ #v=dTeta*2/pi*0.552
+ #v=dTeta*2/pi*4*(sqrt(2)-1)/3
+ v = 4*tan(dTeta/4)/3
+ #if not sweepflag:
+ # v*=-1
+ p=[]
+ for i in range(0,NbSectors+1,1):
+ angle=start+i*dTeta
+ v1=[O[0]+cos(angle)-(-v)*sin(angle),O[1]+sin(angle)+(-v)*cos(angle)]
+ pt=[O[0]+cos(angle) ,O[1]+sin(angle) ]
+ v2=[O[0]+cos(angle)- v *sin(angle),O[1]+sin(angle)+ v *cos(angle)]
+ p.append([v1,pt,v2])
+ p[ 0][0]=p[ 0][1][:]
+ p[-1][2]=p[-1][1][:]
+
+ mat=matprod((rotmat(teta),[[rx,0],[0,ry]],rotmat(-teta)))
+ for pts in p:
+ applymat(mat, pts[0])
+ applymat(mat, pts[1])
+ applymat(mat, pts[2])
+ return(p)
+
+def CubicSuperPath(simplepath):
+ csp = []
+ subpath = -1
+ subpathstart = []
+ last = []
+ lastctrl = []
+ for s in simplepath:
+ cmd, params = s
+ if cmd == 'M':
+ if last:
+ csp[subpath].append([lastctrl[:],last[:],last[:]])
+ subpath += 1
+ csp.append([])
+ subpathstart = params[:]
+ last = params[:]
+ lastctrl = params[:]
+ elif cmd == 'L':
+ csp[subpath].append([lastctrl[:],last[:],last[:]])
+ last = params[:]
+ lastctrl = params[:]
+ elif cmd == 'C':
+ csp[subpath].append([lastctrl[:],last[:],params[:2]])
+ last = params[-2:]
+ lastctrl = params[2:4]
+ elif cmd == 'Q':
+ q0=last[:]
+ q1=params[0:2]
+ q2=params[2:4]
+ x0= q0[0]
+ x1=1./3*q0[0]+2./3*q1[0]
+ x2= 2./3*q1[0]+1./3*q2[0]
+ x3= q2[0]
+ y0= q0[1]
+ y1=1./3*q0[1]+2./3*q1[1]
+ y2= 2./3*q1[1]+1./3*q2[1]
+ y3= q2[1]
+ csp[subpath].append([lastctrl[:],[x0,y0],[x1,y1]])
+ last = [x3,y3]
+ lastctrl = [x2,y2]
+ elif cmd == 'A':
+ arcp=ArcToPath(last[:],params[:])
+ arcp[ 0][0]=lastctrl[:]
+ last=arcp[-1][1]
+ lastctrl = arcp[-1][0]
+ csp[subpath]+=arcp[:-1]
+ elif cmd == 'Z':
+ csp[subpath].append([lastctrl[:],last[:],last[:]])
+ last = subpathstart[:]
+ lastctrl = subpathstart[:]
+ #append final superpoint
+ csp[subpath].append([lastctrl[:],last[:],last[:]])
+ return csp
+
+def unCubicSuperPath(csp):
+ a = []
+ for subpath in csp:
+ if subpath:
+ a.append(['M',subpath[0][1][:]])
+ for i in range(1,len(subpath)):
+ a.append(['C',subpath[i-1][2][:] + subpath[i][0][:] + subpath[i][1][:]])
+ return a
+
+def parsePath(d):
+ return CubicSuperPath(simplepath.parsePath(d))
+
+def formatPath(p):
+ return simplepath.formatPath(unCubicSuperPath(p))
+
+
+# vim: expandtab shiftwidth=4 tabstop=8 softtabstop=4 encoding=utf-8 textwidth=99
diff --git a/support/dxf_export/dxf_templates.py b/support/dxf_export/dxf_templates.py
new file mode 100755
index 0000000..fb26632
--- /dev/null
+++ b/support/dxf_export/dxf_templates.py
@@ -0,0 +1,645 @@
+r14_header = ''' 0
+SECTION
+ 2
+HEADER
+ 9
+$ACADVER
+ 1
+AC1014
+ 9
+$HANDSEED
+ 5
+FFFF
+ 0
+ENDSEC
+ 0
+SECTION
+ 2
+TABLES
+ 0
+TABLE
+ 2
+VPORT
+ 5
+8
+330
+0
+100
+AcDbSymbolTable
+ 70
+ 4
+ 0
+VPORT
+ 5
+2E
+330
+8
+100
+AcDbSymbolTableRecord
+100
+AcDbViewportTableRecord
+ 2
+*ACTIVE
+ 70
+ 0
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+ 20
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+ 22
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+ 42
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+ 0
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+5
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+AcDbSymbolTableRecord
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+AcDbLinetypeTableRecord
+ 2
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+
+ 72
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+
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+100
+AcDbLinetypeTableRecord
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+ 70
+ 0
+ 3
+Solid line
+ 72
+ 65
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+ 5
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+AcDbLayerTableRecord
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+AcDbTextStyleTableRecord
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+ 70
+ 0
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+ 0
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+ 3
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+
+ 0
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+ 5
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+AcDbSymbolTable
+ 70
+ 0
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+ 2
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+ 5
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+AcDbSymbolTable
+ 70
+ 0
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+ 2
+APPID
+ 5
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+AcDbSymbolTable
+ 70
+ 2
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+ 5
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+AcDbSymbolTableRecord
+100
+AcDbRegAppTableRecord
+ 2
+ACAD
+ 70
+ 0
+ 0
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+ 0
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+ 2
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+ 5
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+330
+0
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+AcDbSymbolTable
+ 70
+ 1
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+DIMSTYLE
+105
+27
+330
+A
+100
+AcDbSymbolTableRecord
+100
+AcDbDimStyleTableRecord
+ 2
+ISO-25
+ 70
+ 0
+ 3
+
+ 4
+
+ 5
+
+ 6
+
+ 7
+
+ 40
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+ 41
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+0.625
+ 43
+3.75
+ 44
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+0.03937007874016
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+ 71
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+ 0
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+ 0
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+ 2
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+ 5
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+ 70
+ 1
+ 0
+BLOCK_RECORD
+ 5
+1F
+330
+1
+100
+AcDbSymbolTableRecord
+100
+AcDbBlockTableRecord
+ 2
+*MODEL_SPACE
+ 0
+BLOCK_RECORD
+ 5
+1B
+330
+1
+100
+AcDbSymbolTableRecord
+100
+AcDbBlockTableRecord
+ 2
+*PAPER_SPACE
+ 0
+ENDTAB
+ 0
+ENDSEC
+ 0
+SECTION
+ 2
+BLOCKS
+ 0
+BLOCK
+ 5
+20
+330
+1F
+100
+AcDbEntity
+ 8
+0
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+AcDbBlockBegin
+ 2
+*MODEL_SPACE
+ 70
+ 0
+ 10
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+ 20
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+ 30
+0.0
+ 3
+*MODEL_SPACE
+ 1
+
+ 0
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+ 5
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+AcDbEntity
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+ 5
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+AcDbEntity
+ 67
+ 1
+ 8
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+AcDbBlockBegin
+ 2
+*PAPER_SPACE
+ 1
+
+ 0
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+ 5
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+AcDbEntity
+ 67
+ 1
+ 8
+0
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+AcDbBlockEnd
+ 0
+ENDSEC
+ 0
+SECTION
+ 2
+ENTITIES
+'''
+
+
+r14_footer = ''' 0
+ENDSEC
+ 0
+SECTION
+ 2
+OBJECTS
+ 0
+DICTIONARY
+ 5
+C
+330
+0
+100
+AcDbDictionary
+ 3
+ACAD_GROUP
+350
+D
+ 3
+ACAD_MLINESTYLE
+350
+17
+ 0
+DICTIONARY
+ 5
+D
+330
+C
+100
+AcDbDictionary
+ 0
+DICTIONARY
+ 5
+1A
+330
+C
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+AcDbDictionary
+ 0
+DICTIONARY
+ 5
+17
+330
+C
+100
+AcDbDictionary
+ 3
+STANDARD
+350
+18
+ 0
+DICTIONARY
+ 5
+19
+330
+C
+100
+AcDbDictionary
+ 0
+ENDSEC
+ 0
+EOF'''
diff --git a/support/dxf_export/ffgeom.py b/support/dxf_export/ffgeom.py
new file mode 100755
index 0000000..1983586
--- /dev/null
+++ b/support/dxf_export/ffgeom.py
@@ -0,0 +1,141 @@
+#!/usr/bin/env python
+"""
+ ffgeom.py
+ Copyright (C) 2005 Aaron Cyril Spike, aaron@ekips.org
+
+ This file is part of FretFind 2-D.
+
+ FretFind 2-D 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.
+
+ FretFind 2-D 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 FretFind 2-D; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+"""
+import math
+try:
+ NaN = float('NaN')
+except ValueError:
+ PosInf = 1e300000
+ NaN = PosInf/PosInf
+
+class Point:
+ precision = 5
+ def __init__(self, x, y):
+ self.__coordinates = {'x' : float(x), 'y' : float(y)}
+ def __getitem__(self, key):
+ return self.__coordinates[key]
+ def __setitem__(self, key, value):
+ self.__coordinates[key] = float(value)
+ def __repr__(self):
+ return '(%s, %s)' % (round(self['x'],self.precision),round(self['y'],self.precision))
+ def copy(self):
+ return Point(self['x'],self['y'])
+ def translate(self, x, y):
+ self['x'] += x
+ self['y'] += y
+ def move(self, x, y):
+ self['x'] = float(x)
+ self['y'] = float(y)
+
+class Segment:
+ def __init__(self, e0, e1):
+ self.__endpoints = [e0, e1]
+ def __getitem__(self, key):
+ return self.__endpoints[key]
+ def __setitem__(self, key, value):
+ self.__endpoints[key] = value
+ def __repr__(self):
+ return repr(self.__endpoints)
+ def copy(self):
+ return Segment(self[0],self[1])
+ def translate(self, x, y):
+ self[0].translate(x,y)
+ self[1].translate(x,y)
+ def move(self,e0,e1):
+ self[0] = e0
+ self[1] = e1
+ def delta_x(self):
+ return self[1]['x'] - self[0]['x']
+ def delta_y(self):
+ return self[1]['y'] - self[0]['y']
+ #alias functions
+ run = delta_x
+ rise = delta_y
+ def slope(self):
+ if self.delta_x() != 0:
+ return self.delta_x() / self.delta_y()
+ return NaN
+ def intercept(self):
+ if self.delta_x() != 0:
+ return self[1]['y'] - (self[0]['x'] * self.slope())
+ return NaN
+ def distanceToPoint(self, p):
+ s2 = Segment(self[0],p)
+ c1 = dot(s2,self)
+ if c1 <= 0:
+ return Segment(p,self[0]).length()
+ c2 = dot(self,self)
+ if c2 <= c1:
+ return Segment(p,self[1]).length()
+ return self.perpDistanceToPoint(p)
+ def perpDistanceToPoint(self, p):
+ len = self.length()
+ if len == 0: return NaN
+ return math.fabs(((self[1]['x'] - self[0]['x']) * (self[0]['y'] - p['y'])) - \
+ ((self[0]['x'] - p['x']) * (self[1]['y'] - self[0]['y']))) / len
+ def angle(self):
+ return math.pi * (math.atan2(self.delta_y(), self.delta_x())) / 180
+ def length(self):
+ return math.sqrt((self.delta_x() ** 2) + (self.delta_y() ** 2))
+ def pointAtLength(self, len):
+ if self.length() == 0: return Point(NaN, NaN)
+ ratio = len / self.length()
+ x = self[0]['x'] + (ratio * self.delta_x())
+ y = self[0]['y'] + (ratio * self.delta_y())
+ return Point(x, y)
+ def pointAtRatio(self, ratio):
+ if self.length() == 0: return Point(NaN, NaN)
+ x = self[0]['x'] + (ratio * self.delta_x())
+ y = self[0]['y'] + (ratio * self.delta_y())
+ return Point(x, y)
+ def createParallel(self, p):
+ return Segment(Point(p['x'] + self.delta_x(), p['y'] + self.delta_y()), p)
+ def intersect(self, s):
+ return intersectSegments(self, s)
+
+def intersectSegments(s1, s2):
+ x1 = s1[0]['x']
+ x2 = s1[1]['x']
+ x3 = s2[0]['x']
+ x4 = s2[1]['x']
+
+ y1 = s1[0]['y']
+ y2 = s1[1]['y']
+ y3 = s2[0]['y']
+ y4 = s2[1]['y']
+
+ denom = ((y4 - y3) * (x2 - x1)) - ((x4 - x3) * (y2 - y1))
+ num1 = ((x4 - x3) * (y1 - y3)) - ((y4 - y3) * (x1 - x3))
+ num2 = ((x2 - x1) * (y1 - y3)) - ((y2 - y1) * (x1 - x3))
+
+ num = num1
+
+ if denom != 0:
+ x = x1 + ((num / denom) * (x2 - x1))
+ y = y1 + ((num / denom) * (y2 - y1))
+ return Point(x, y)
+ return Point(NaN, NaN)
+
+def dot(s1, s2):
+ return s1.delta_x() * s2.delta_x() + s1.delta_y() * s2.delta_y()
+
+
+# vim: expandtab shiftwidth=4 tabstop=8 softtabstop=4 encoding=utf-8 textwidth=99
diff --git a/support/dxf_export/inkex.py b/support/dxf_export/inkex.py
new file mode 100755
index 0000000..e487822
--- /dev/null
+++ b/support/dxf_export/inkex.py
@@ -0,0 +1,241 @@
+#!/usr/bin/env python
+"""
+inkex.py
+A helper module for creating Inkscape extensions
+
+Copyright (C) 2005,2007 Aaron Spike, aaron@ekips.org
+
+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 sys, copy, optparse, random, re
+import gettext
+from math import *
+_ = gettext.gettext
+
+#a dictionary of all of the xmlns prefixes in a standard inkscape doc
+NSS = {
+u'sodipodi' :u'http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd',
+u'cc' :u'http://creativecommons.org/ns#',
+u'ccOLD' :u'http://web.resource.org/cc/',
+u'svg' :u'http://www.w3.org/2000/svg',
+u'dc' :u'http://purl.org/dc/elements/1.1/',
+u'rdf' :u'http://www.w3.org/1999/02/22-rdf-syntax-ns#',
+u'inkscape' :u'http://www.inkscape.org/namespaces/inkscape',
+u'xlink' :u'http://www.w3.org/1999/xlink',
+u'xml' :u'http://www.w3.org/XML/1998/namespace'
+}
+
+#a dictionary of unit to user unit conversion factors
+uuconv = {'in':90.0, 'pt':1.25, 'px':1, 'mm':3.5433070866, 'cm':35.433070866, 'm':3543.3070866,
+ 'km':3543307.0866, 'pc':15.0, 'yd':3240 , 'ft':1080}
+def unittouu(string):
+ '''Returns userunits given a string representation of units in another system'''
+ unit = re.compile('(%s)$' % '|'.join(uuconv.keys()))
+ param = re.compile(r'(([-+]?[0-9]+(\.[0-9]*)?|[-+]?\.[0-9]+)([eE][-+]?[0-9]+)?)')
+
+ p = param.match(string)
+ u = unit.search(string)
+ if p:
+ retval = float(p.string[p.start():p.end()])
+ else:
+ retval = 0.0
+ if u:
+ try:
+ return retval * uuconv[u.string[u.start():u.end()]]
+ except KeyError:
+ pass
+ return retval
+
+def uutounit(val, unit):
+ return val/uuconv[unit]
+
+try:
+ from lxml import etree
+except:
+ sys.exit(_('The fantastic lxml wrapper for libxml2 is required by inkex.py and therefore this extension. Please download and install the latest version from http://cheeseshop.python.org/pypi/lxml/, or install it through your package manager by a command like: sudo apt-get install python-lxml'))
+
+def debug(what):
+ sys.stderr.write(str(what) + "\n")
+ return what
+
+def errormsg(msg):
+ """Intended for end-user-visible error messages.
+
+ (Currently just writes to stderr with an appended newline, but could do
+ something better in future: e.g. could add markup to distinguish error
+ messages from status messages or debugging output.)
+
+ Note that this should always be combined with translation:
+
+ import gettext
+ _ = gettext.gettext
+ ...
+ inkex.errormsg(_("This extension requires two selected paths."))
+ """
+ sys.stderr.write((unicode(msg) + "\n").encode("UTF-8"))
+
+def check_inkbool(option, opt, value):
+ if str(value).capitalize() == 'True':
+ return True
+ elif str(value).capitalize() == 'False':
+ return False
+ else:
+ raise optparse.OptionValueError("option %s: invalid inkbool value: %s" % (opt, value))
+
+def addNS(tag, ns=None):
+ val = tag
+ if ns!=None and len(ns)>0 and NSS.has_key(ns) and len(tag)>0 and tag[0]!='{':
+ val = "{%s}%s" % (NSS[ns], tag)
+ return val
+
+class InkOption(optparse.Option):
+ TYPES = optparse.Option.TYPES + ("inkbool",)
+ TYPE_CHECKER = copy.copy(optparse.Option.TYPE_CHECKER)
+ TYPE_CHECKER["inkbool"] = check_inkbool
+
+class Effect:
+ """A class for creating Inkscape SVG Effects"""
+
+ def __init__(self, *args, **kwargs):
+ self.document=None
+ self.original_document=None
+ self.ctx=None
+ self.selected={}
+ self.doc_ids={}
+ self.options=None
+ self.args=None
+ self.OptionParser = optparse.OptionParser(usage="usage: %prog [options] SVGfile",option_class=InkOption)
+ self.OptionParser.add_option("--id",
+ action="append", type="string", dest="ids", default=[],
+ help="id attribute of object to manipulate")
+
+ def effect(self):
+ pass
+
+ def getoptions(self,args=sys.argv[1:]):
+ """Collect command line arguments"""
+ self.options, self.args = self.OptionParser.parse_args(args)
+
+ def parse(self,file=None):
+ """Parse document in specified file or on stdin"""
+ try:
+ try:
+ stream = open(file,'r')
+ except:
+ stream = open(self.svg_file,'r')
+ except:
+ stream = sys.stdin
+ p = etree.XMLParser(huge_tree=True)
+ self.document = etree.parse(stream, parser=p)
+ self.original_document = copy.deepcopy(self.document)
+ stream.close()
+
+ def getposinlayer(self):
+ #defaults
+ self.current_layer = self.document.getroot()
+ self.view_center = (0.0,0.0)
+
+ layerattr = self.document.xpath('//sodipodi:namedview/@inkscape:current-layer', namespaces=NSS)
+ if layerattr:
+ layername = layerattr[0]
+ layer = self.document.xpath('//svg:g[@id="%s"]' % layername, namespaces=NSS)
+ if layer:
+ self.current_layer = layer[0]
+
+ xattr = self.document.xpath('//sodipodi:namedview/@inkscape:cx', namespaces=NSS)
+ yattr = self.document.xpath('//sodipodi:namedview/@inkscape:cy', namespaces=NSS)
+ doc_height = unittouu(self.document.getroot().get('height'))
+ if xattr and yattr:
+ x = xattr[0]
+ y = yattr[0]
+ if x and y:
+ self.view_center = (float(x), doc_height - float(y)) # FIXME: y-coordinate flip, eliminate it when it's gone in Inkscape
+
+ def getselected(self):
+ """Collect selected nodes"""
+ for i in self.options.ids:
+ path = '//*[@id="%s"]' % i
+ for node in self.document.xpath(path, namespaces=NSS):
+ self.selected[i] = node
+
+ def getElementById(self, id):
+ path = '//*[@id="%s"]' % id
+ el_list = self.document.xpath(path, namespaces=NSS)
+ if el_list:
+ return el_list[0]
+ else:
+ return None
+
+ def getParentNode(self, node):
+ for parent in self.document.getiterator():
+ if node in parent.getchildren():
+ return parent
+ break
+
+
+ def getdocids(self):
+ docIdNodes = self.document.xpath('//@id', namespaces=NSS)
+ for m in docIdNodes:
+ self.doc_ids[m] = 1
+
+ def getNamedView(self):
+ return self.document.xpath('//sodipodi:namedview', namespaces=NSS)[0]
+
+ def createGuide(self, posX, posY, angle):
+ atts = {
+ 'position': str(posX)+','+str(posY),
+ 'orientation': str(sin(radians(angle)))+','+str(-cos(radians(angle)))
+ }
+ guide = etree.SubElement(
+ self.getNamedView(),
+ addNS('guide','sodipodi'), atts )
+ return guide
+
+ def output(self):
+ """Serialize document into XML on stdout"""
+ original = etree.tostring(self.original_document)
+ result = etree.tostring(self.document)
+ if original != result:
+ self.document.write(sys.stdout)
+
+ def affect(self, args=sys.argv[1:], output=True):
+ """Affect an SVG document with a callback effect"""
+ self.svg_file = args[-1]
+ self.getoptions(args)
+ self.parse()
+ self.getposinlayer()
+ self.getselected()
+ self.getdocids()
+ self.effect()
+ if output: self.output()
+
+ def uniqueId(self, old_id, make_new_id = True):
+ new_id = old_id
+ if make_new_id:
+ while new_id in self.doc_ids:
+ new_id += random.choice('0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ')
+ self.doc_ids[new_id] = 1
+ return new_id
+
+ def xpathSingle(self, path):
+ try:
+ retval = self.document.xpath(path, namespaces=NSS)[0]
+ except:
+ errormsg(_("No matching node for expression: %s") % path)
+ retval = None
+ return retval
+
+
+# vim: expandtab shiftwidth=4 tabstop=8 softtabstop=4 encoding=utf-8 textwidth=99
diff --git a/support/dxf_export/simplepath.py b/support/dxf_export/simplepath.py
new file mode 100755
index 0000000..f62b1b4
--- /dev/null
+++ b/support/dxf_export/simplepath.py
@@ -0,0 +1,212 @@
+#!/usr/bin/env python
+"""
+simplepath.py
+functions for digesting paths into a simple list structure
+
+Copyright (C) 2005 Aaron Spike, aaron@ekips.org
+
+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 re, math
+
+def lexPath(d):
+ """
+ returns and iterator that breaks path data
+ identifies command and parameter tokens
+ """
+ offset = 0
+ length = len(d)
+ delim = re.compile(r'[ \t\r\n,]+')
+ command = re.compile(r'[MLHVCSQTAZmlhvcsqtaz]')
+ parameter = re.compile(r'(([-+]?[0-9]+(\.[0-9]*)?|[-+]?\.[0-9]+)([eE][-+]?[0-9]+)?)')
+ while 1:
+ m = delim.match(d, offset)
+ if m:
+ offset = m.end()
+ if offset >= length:
+ break
+ m = command.match(d, offset)
+ if m:
+ yield [d[offset:m.end()], True]
+ offset = m.end()
+ continue
+ m = parameter.match(d, offset)
+ if m:
+ yield [d[offset:m.end()], False]
+ offset = m.end()
+ continue
+ #TODO: create new exception
+ raise Exception, 'Invalid path data!'
+'''
+pathdefs = {commandfamily:
+ [
+ implicitnext,
+ #params,
+ [casts,cast,cast],
+ [coord type,x,y,0]
+ ]}
+'''
+pathdefs = {
+ 'M':['L', 2, [float, float], ['x','y']],
+ 'L':['L', 2, [float, float], ['x','y']],
+ 'H':['H', 1, [float], ['x']],
+ 'V':['V', 1, [float], ['y']],
+ 'C':['C', 6, [float, float, float, float, float, float], ['x','y','x','y','x','y']],
+ 'S':['S', 4, [float, float, float, float], ['x','y','x','y']],
+ 'Q':['Q', 4, [float, float, float, float], ['x','y','x','y']],
+ 'T':['T', 2, [float, float], ['x','y']],
+ 'A':['A', 7, [float, float, float, int, int, float, float], ['r','r','a',0,'s','x','y']],
+ 'Z':['L', 0, [], []]
+ }
+def parsePath(d):
+ """
+ Parse SVG path and return an array of segments.
+ Removes all shorthand notation.
+ Converts coordinates to absolute.
+ """
+ retval = []
+ lexer = lexPath(d)
+
+ pen = (0.0,0.0)
+ subPathStart = pen
+ lastControl = pen
+ lastCommand = ''
+
+ while 1:
+ try:
+ token, isCommand = lexer.next()
+ except StopIteration:
+ break
+ params = []
+ needParam = True
+ if isCommand:
+ if not lastCommand and token.upper() != 'M':
+ raise Exception, 'Invalid path, must begin with moveto.'
+ else:
+ command = token
+ else:
+ #command was omited
+ #use last command's implicit next command
+ needParam = False
+ if lastCommand:
+ if lastCommand.isupper():
+ command = pathdefs[lastCommand][0]
+ else:
+ command = pathdefs[lastCommand.upper()][0].lower()
+ else:
+ raise Exception, 'Invalid path, no initial command.'
+ numParams = pathdefs[command.upper()][1]
+ while numParams > 0:
+ if needParam:
+ try:
+ token, isCommand = lexer.next()
+ if isCommand:
+ raise Exception, 'Invalid number of parameters'
+ except StopIteration:
+ raise Exception, 'Unexpected end of path'
+ cast = pathdefs[command.upper()][2][-numParams]
+ param = cast(token)
+ if command.islower():
+ if pathdefs[command.upper()][3][-numParams]=='x':
+ param += pen[0]
+ elif pathdefs[command.upper()][3][-numParams]=='y':
+ param += pen[1]
+ params.append(param)
+ needParam = True
+ numParams -= 1
+ #segment is now absolute so
+ outputCommand = command.upper()
+
+ #Flesh out shortcut notation
+ if outputCommand in ('H','V'):
+ if outputCommand == 'H':
+ params.append(pen[1])
+ if outputCommand == 'V':
+ params.insert(0,pen[0])
+ outputCommand = 'L'
+ if outputCommand in ('S','T'):
+ params.insert(0,pen[1]+(pen[1]-lastControl[1]))
+ params.insert(0,pen[0]+(pen[0]-lastControl[0]))
+ if outputCommand == 'S':
+ outputCommand = 'C'
+ if outputCommand == 'T':
+ outputCommand = 'Q'
+
+ #current values become "last" values
+ if outputCommand == 'M':
+ subPathStart = tuple(params[0:2])
+ pen = subPathStart
+ if outputCommand == 'Z':
+ pen = subPathStart
+ else:
+ pen = tuple(params[-2:])
+
+ if outputCommand in ('Q','C'):
+ lastControl = tuple(params[-4:-2])
+ else:
+ lastControl = pen
+ lastCommand = command
+
+ retval.append([outputCommand,params])
+ return retval
+
+def formatPath(a):
+ """Format SVG path data from an array"""
+ return "".join([cmd + " ".join([str(p) for p in params]) for cmd, params in a])
+
+def translatePath(p, x, y):
+ for cmd,params in p:
+ defs = pathdefs[cmd]
+ for i in range(defs[1]):
+ if defs[3][i] == 'x':
+ params[i] += x
+ elif defs[3][i] == 'y':
+ params[i] += y
+
+def scalePath(p, x, y):
+ for cmd,params in p:
+ defs = pathdefs[cmd]
+ for i in range(defs[1]):
+ if defs[3][i] == 'x':
+ params[i] *= x
+ elif defs[3][i] == 'y':
+ params[i] *= y
+ elif defs[3][i] == 'r': # radius parameter
+ params[i] *= x
+ elif defs[3][i] == 's': # sweep-flag parameter
+ if x*y < 0:
+ params[i] = 1 - params[i]
+ elif defs[3][i] == 'a': # x-axis-rotation angle
+ if y < 0:
+ params[i] = - params[i]
+
+def rotatePath(p, a, cx = 0, cy = 0):
+ if a == 0:
+ return p
+ for cmd,params in p:
+ defs = pathdefs[cmd]
+ for i in range(defs[1]):
+ if defs[3][i] == 'x':
+ x = params[i] - cx
+ y = params[i + 1] - cy
+ r = math.sqrt((x**2) + (y**2))
+ if r != 0:
+ theta = math.atan2(y, x) + a
+ params[i] = (r * math.cos(theta)) + cx
+ params[i + 1] = (r * math.sin(theta)) + cy
+
+
+# vim: expandtab shiftwidth=4 tabstop=8 softtabstop=4 encoding=utf-8 textwidth=99
diff --git a/support/dxf_export/simplestyle.py b/support/dxf_export/simplestyle.py
new file mode 100755
index 0000000..3ec971e
--- /dev/null
+++ b/support/dxf_export/simplestyle.py
@@ -0,0 +1,244 @@
+#!/usr/bin/env python
+"""
+simplestyle.py
+Two simple functions for working with inline css
+and some color handling on top.
+
+Copyright (C) 2005 Aaron Spike, aaron@ekips.org
+
+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
+"""
+
+svgcolors={
+ 'aliceblue':'#f0f8ff',
+ 'antiquewhite':'#faebd7',
+ 'aqua':'#00ffff',
+ 'aquamarine':'#7fffd4',
+ 'azure':'#f0ffff',
+ 'beige':'#f5f5dc',
+ 'bisque':'#ffe4c4',
+ 'black':'#000000',
+ 'blanchedalmond':'#ffebcd',
+ 'blue':'#0000ff',
+ 'blueviolet':'#8a2be2',
+ 'brown':'#a52a2a',
+ 'burlywood':'#deb887',
+ 'cadetblue':'#5f9ea0',
+ 'chartreuse':'#7fff00',
+ 'chocolate':'#d2691e',
+ 'coral':'#ff7f50',
+ 'cornflowerblue':'#6495ed',
+ 'cornsilk':'#fff8dc',
+ 'crimson':'#dc143c',
+ 'cyan':'#00ffff',
+ 'darkblue':'#00008b',
+ 'darkcyan':'#008b8b',
+ 'darkgoldenrod':'#b8860b',
+ 'darkgray':'#a9a9a9',
+ 'darkgreen':'#006400',
+ 'darkgrey':'#a9a9a9',
+ 'darkkhaki':'#bdb76b',
+ 'darkmagenta':'#8b008b',
+ 'darkolivegreen':'#556b2f',
+ 'darkorange':'#ff8c00',
+ 'darkorchid':'#9932cc',
+ 'darkred':'#8b0000',
+ 'darksalmon':'#e9967a',
+ 'darkseagreen':'#8fbc8f',
+ 'darkslateblue':'#483d8b',
+ 'darkslategray':'#2f4f4f',
+ 'darkslategrey':'#2f4f4f',
+ 'darkturquoise':'#00ced1',
+ 'darkviolet':'#9400d3',
+ 'deeppink':'#ff1493',
+ 'deepskyblue':'#00bfff',
+ 'dimgray':'#696969',
+ 'dimgrey':'#696969',
+ 'dodgerblue':'#1e90ff',
+ 'firebrick':'#b22222',
+ 'floralwhite':'#fffaf0',
+ 'forestgreen':'#228b22',
+ 'fuchsia':'#ff00ff',
+ 'gainsboro':'#dcdcdc',
+ 'ghostwhite':'#f8f8ff',
+ 'gold':'#ffd700',
+ 'goldenrod':'#daa520',
+ 'gray':'#808080',
+ 'grey':'#808080',
+ 'green':'#008000',
+ 'greenyellow':'#adff2f',
+ 'honeydew':'#f0fff0',
+ 'hotpink':'#ff69b4',
+ 'indianred':'#cd5c5c',
+ 'indigo':'#4b0082',
+ 'ivory':'#fffff0',
+ 'khaki':'#f0e68c',
+ 'lavender':'#e6e6fa',
+ 'lavenderblush':'#fff0f5',
+ 'lawngreen':'#7cfc00',
+ 'lemonchiffon':'#fffacd',
+ 'lightblue':'#add8e6',
+ 'lightcoral':'#f08080',
+ 'lightcyan':'#e0ffff',
+ 'lightgoldenrodyellow':'#fafad2',
+ 'lightgray':'#d3d3d3',
+ 'lightgreen':'#90ee90',
+ 'lightgrey':'#d3d3d3',
+ 'lightpink':'#ffb6c1',
+ 'lightsalmon':'#ffa07a',
+ 'lightseagreen':'#20b2aa',
+ 'lightskyblue':'#87cefa',
+ 'lightslategray':'#778899',
+ 'lightslategrey':'#778899',
+ 'lightsteelblue':'#b0c4de',
+ 'lightyellow':'#ffffe0',
+ 'lime':'#00ff00',
+ 'limegreen':'#32cd32',
+ 'linen':'#faf0e6',
+ 'magenta':'#ff00ff',
+ 'maroon':'#800000',
+ 'mediumaquamarine':'#66cdaa',
+ 'mediumblue':'#0000cd',
+ 'mediumorchid':'#ba55d3',
+ 'mediumpurple':'#9370db',
+ 'mediumseagreen':'#3cb371',
+ 'mediumslateblue':'#7b68ee',
+ 'mediumspringgreen':'#00fa9a',
+ 'mediumturquoise':'#48d1cc',
+ 'mediumvioletred':'#c71585',
+ 'midnightblue':'#191970',
+ 'mintcream':'#f5fffa',
+ 'mistyrose':'#ffe4e1',
+ 'moccasin':'#ffe4b5',
+ 'navajowhite':'#ffdead',
+ 'navy':'#000080',
+ 'oldlace':'#fdf5e6',
+ 'olive':'#808000',
+ 'olivedrab':'#6b8e23',
+ 'orange':'#ffa500',
+ 'orangered':'#ff4500',
+ 'orchid':'#da70d6',
+ 'palegoldenrod':'#eee8aa',
+ 'palegreen':'#98fb98',
+ 'paleturquoise':'#afeeee',
+ 'palevioletred':'#db7093',
+ 'papayawhip':'#ffefd5',
+ 'peachpuff':'#ffdab9',
+ 'peru':'#cd853f',
+ 'pink':'#ffc0cb',
+ 'plum':'#dda0dd',
+ 'powderblue':'#b0e0e6',
+ 'purple':'#800080',
+ 'red':'#ff0000',
+ 'rosybrown':'#bc8f8f',
+ 'royalblue':'#4169e1',
+ 'saddlebrown':'#8b4513',
+ 'salmon':'#fa8072',
+ 'sandybrown':'#f4a460',
+ 'seagreen':'#2e8b57',
+ 'seashell':'#fff5ee',
+ 'sienna':'#a0522d',
+ 'silver':'#c0c0c0',
+ 'skyblue':'#87ceeb',
+ 'slateblue':'#6a5acd',
+ 'slategray':'#708090',
+ 'slategrey':'#708090',
+ 'snow':'#fffafa',
+ 'springgreen':'#00ff7f',
+ 'steelblue':'#4682b4',
+ 'tan':'#d2b48c',
+ 'teal':'#008080',
+ 'thistle':'#d8bfd8',
+ 'tomato':'#ff6347',
+ 'turquoise':'#40e0d0',
+ 'violet':'#ee82ee',
+ 'wheat':'#f5deb3',
+ 'white':'#ffffff',
+ 'whitesmoke':'#f5f5f5',
+ 'yellow':'#ffff00',
+ 'yellowgreen':'#9acd32'
+}
+
+def parseStyle(s):
+ """Create a dictionary from the value of an inline style attribute"""
+ if s is None:
+ return {}
+ else:
+ return dict([[x.strip() for x in i.split(":")] for i in s.split(";") if len(i.strip())])
+
+def formatStyle(a):
+ """Format an inline style attribute from a dictionary"""
+ return ";".join([att+":"+str(val) for att,val in a.iteritems()])
+
+def isColor(c):
+ """Determine if its a color we can use. If not, leave it unchanged."""
+ if c.startswith('#') and (len(c)==4 or len(c)==7):
+ return True
+ if c.lower() in svgcolors.keys():
+ return True
+ #might be "none" or some undefined color constant or rgb()
+ #however, rgb() shouldnt occur at this point
+ return False
+
+def parseColor(c):
+ """Creates a rgb int array"""
+ tmp = svgcolors.get(c.lower())
+ if tmp is not None:
+ c = tmp
+ elif c.startswith('#') and len(c)==4:
+ c='#'+c[1:2]+c[1:2]+c[2:3]+c[2:3]+c[3:]+c[3:]
+ elif c.startswith('rgb('):
+ # remove the rgb(...) stuff
+ tmp = c.strip()[4:-1]
+ numbers = [number.strip() for number in tmp.split(',')]
+ converted_numbers = []
+ if len(numbers) == 3:
+ for num in numbers:
+ if num.endswith(r'%'):
+ converted_numbers.append(int(float(num[0:-1])*255/100))
+ else:
+ converted_numbers.append(int(num))
+ return tuple(converted_numbers)
+ else:
+ return (0,0,0)
+ try:
+ r=int(c[1:3],16)
+ g=int(c[3:5],16)
+ b=int(c[5:],16)
+ except:
+ # unknown color ...
+ # Return a default color. Maybe not the best thing to do but probably
+ # better than raising an exception.
+ return(0,0,0)
+ return (r,g,b)
+
+def formatColoria(a):
+ """int array to #rrggbb"""
+ return '#%02x%02x%02x' % (a[0],a[1],a[2])
+
+def formatColorfa(a):
+ """float array to #rrggbb"""
+ return '#%02x%02x%02x' % (int(round(a[0]*255)),int(round(a[1]*255)),int(round(a[2]*255)))
+
+def formatColor3i(r,g,b):
+ """3 ints to #rrggbb"""
+ return '#%02x%02x%02x' % (r,g,b)
+
+def formatColor3f(r,g,b):
+ """3 floats to #rrggbb"""
+ return '#%02x%02x%02x' % (int(round(r*255)),int(round(g*255)),int(round(b*255)))
+
+
+# vim: expandtab shiftwidth=4 tabstop=8 softtabstop=4 encoding=utf-8 textwidth=99
diff --git a/support/dxf_export/simpletransform.py b/support/dxf_export/simpletransform.py
new file mode 100755
index 0000000..47cc61e
--- /dev/null
+++ b/support/dxf_export/simpletransform.py
@@ -0,0 +1,241 @@
+#!/usr/bin/env python
+'''
+Copyright (C) 2006 Jean-Francois Barraud, barraud@math.univ-lille1.fr
+Copyright (C) 2010 Alvin Penner, penner@vaxxine.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
+barraud@math.univ-lille1.fr
+
+This code defines several functions to make handling of transform
+attribute easier.
+'''
+import inkex, cubicsuperpath, bezmisc, simplestyle
+import copy, math, re
+
+def parseTransform(transf,mat=[[1.0, 0.0, 0.0], [0.0, 1.0, 0.0]]):
+ if transf=="" or transf==None:
+ return(mat)
+ stransf = transf.strip()
+ result=re.match("(translate|scale|rotate|skewX|skewY|matrix)\s*\(([^)]*)\)\s*,?",stransf)
+#-- translate --
+ if result.group(1)=="translate":
+ args=result.group(2).replace(',',' ').split()
+ dx=float(args[0])
+ if len(args)==1:
+ dy=0.0
+ else:
+ dy=float(args[1])
+ matrix=[[1,0,dx],[0,1,dy]]
+#-- scale --
+ if result.group(1)=="scale":
+ args=result.group(2).replace(',',' ').split()
+ sx=float(args[0])
+ if len(args)==1:
+ sy=sx
+ else:
+ sy=float(args[1])
+ matrix=[[sx,0,0],[0,sy,0]]
+#-- rotate --
+ if result.group(1)=="rotate":
+ args=result.group(2).replace(',',' ').split()
+ a=float(args[0])*math.pi/180
+ if len(args)==1:
+ cx,cy=(0.0,0.0)
+ else:
+ cx,cy=map(float,args[1:])
+ matrix=[[math.cos(a),-math.sin(a),cx],[math.sin(a),math.cos(a),cy]]
+ matrix=composeTransform(matrix,[[1,0,-cx],[0,1,-cy]])
+#-- skewX --
+ if result.group(1)=="skewX":
+ a=float(result.group(2))*math.pi/180
+ matrix=[[1,math.tan(a),0],[0,1,0]]
+#-- skewY --
+ if result.group(1)=="skewY":
+ a=float(result.group(2))*math.pi/180
+ matrix=[[1,0,0],[math.tan(a),1,0]]
+#-- matrix --
+ if result.group(1)=="matrix":
+ a11,a21,a12,a22,v1,v2=result.group(2).replace(',',' ').split()
+ matrix=[[float(a11),float(a12),float(v1)], [float(a21),float(a22),float(v2)]]
+
+ matrix=composeTransform(mat,matrix)
+ if result.end() < len(stransf):
+ return(parseTransform(stransf[result.end():], matrix))
+ else:
+ return matrix
+
+def formatTransform(mat):
+ return ("matrix(%f,%f,%f,%f,%f,%f)" % (mat[0][0], mat[1][0], mat[0][1], mat[1][1], mat[0][2], mat[1][2]))
+
+def composeTransform(M1,M2):
+ a11 = M1[0][0]*M2[0][0] + M1[0][1]*M2[1][0]
+ a12 = M1[0][0]*M2[0][1] + M1[0][1]*M2[1][1]
+ a21 = M1[1][0]*M2[0][0] + M1[1][1]*M2[1][0]
+ a22 = M1[1][0]*M2[0][1] + M1[1][1]*M2[1][1]
+
+ v1 = M1[0][0]*M2[0][2] + M1[0][1]*M2[1][2] + M1[0][2]
+ v2 = M1[1][0]*M2[0][2] + M1[1][1]*M2[1][2] + M1[1][2]
+ return [[a11,a12,v1],[a21,a22,v2]]
+
+def composeParents(node, mat):
+ trans = node.get('transform')
+ if trans:
+ mat = composeTransform(parseTransform(trans), mat)
+ if node.getparent().tag == inkex.addNS('g','svg'):
+ mat = composeParents(node.getparent(), mat)
+ return mat
+
+def applyTransformToNode(mat,node):
+ m=parseTransform(node.get("transform"))
+ newtransf=formatTransform(composeTransform(mat,m))
+ node.set("transform", newtransf)
+
+def applyTransformToPoint(mat,pt):
+ x = mat[0][0]*pt[0] + mat[0][1]*pt[1] + mat[0][2]
+ y = mat[1][0]*pt[0] + mat[1][1]*pt[1] + mat[1][2]
+ pt[0]=x
+ pt[1]=y
+
+def applyTransformToPath(mat,path):
+ for comp in path:
+ for ctl in comp:
+ for pt in ctl:
+ applyTransformToPoint(mat,pt)
+
+def fuseTransform(node):
+ if node.get('d')==None:
+ #FIXME: how do you raise errors?
+ raise AssertionError, 'can not fuse "transform" of elements that have no "d" attribute'
+ t = node.get("transform")
+ if t == None:
+ return
+ m = parseTransform(t)
+ d = node.get('d')
+ p = cubicsuperpath.parsePath(d)
+ applyTransformToPath(m,p)
+ node.set('d', cubicsuperpath.formatPath(p))
+ del node.attrib["transform"]
+
+####################################################################
+##-- Some functions to compute a rough bbox of a given list of objects.
+##-- this should be shipped out in an separate file...
+
+def boxunion(b1,b2):
+ if b1 is None:
+ return b2
+ elif b2 is None:
+ return b1
+ else:
+ return((min(b1[0],b2[0]), max(b1[1],b2[1]), min(b1[2],b2[2]), max(b1[3],b2[3])))
+
+def roughBBox(path):
+ xmin,xMax,ymin,yMax = path[0][0][0][0],path[0][0][0][0],path[0][0][0][1],path[0][0][0][1]
+ for pathcomp in path:
+ for ctl in pathcomp:
+ for pt in ctl:
+ xmin = min(xmin,pt[0])
+ xMax = max(xMax,pt[0])
+ ymin = min(ymin,pt[1])
+ yMax = max(yMax,pt[1])
+ return xmin,xMax,ymin,yMax
+
+def refinedBBox(path):
+ xmin,xMax,ymin,yMax = path[0][0][1][0],path[0][0][1][0],path[0][0][1][1],path[0][0][1][1]
+ for pathcomp in path:
+ for i in range(1, len(pathcomp)):
+ cmin, cmax = cubicExtrema(pathcomp[i-1][1][0], pathcomp[i-1][2][0], pathcomp[i][0][0], pathcomp[i][1][0])
+ xmin = min(xmin, cmin)
+ xMax = max(xMax, cmax)
+ cmin, cmax = cubicExtrema(pathcomp[i-1][1][1], pathcomp[i-1][2][1], pathcomp[i][0][1], pathcomp[i][1][1])
+ ymin = min(ymin, cmin)
+ yMax = max(yMax, cmax)
+ return xmin,xMax,ymin,yMax
+
+def cubicExtrema(y0, y1, y2, y3):
+ cmin = min(y0, y3)
+ cmax = max(y0, y3)
+ d1 = y1 - y0
+ d2 = y2 - y1
+ d3 = y3 - y2
+ if (d1 - 2*d2 + d3):
+ if (d2*d2 > d1*d3):
+ t = (d1 - d2 + math.sqrt(d2*d2 - d1*d3))/(d1 - 2*d2 + d3)
+ if (t > 0) and (t < 1):
+ y = y0*(1-t)*(1-t)*(1-t) + 3*y1*t*(1-t)*(1-t) + 3*y2*t*t*(1-t) + y3*t*t*t
+ cmin = min(cmin, y)
+ cmax = max(cmax, y)
+ t = (d1 - d2 - math.sqrt(d2*d2 - d1*d3))/(d1 - 2*d2 + d3)
+ if (t > 0) and (t < 1):
+ y = y0*(1-t)*(1-t)*(1-t) + 3*y1*t*(1-t)*(1-t) + 3*y2*t*t*(1-t) + y3*t*t*t
+ cmin = min(cmin, y)
+ cmax = max(cmax, y)
+ elif (d3 - d1):
+ t = -d1/(d3 - d1)
+ if (t > 0) and (t < 1):
+ y = y0*(1-t)*(1-t)*(1-t) + 3*y1*t*(1-t)*(1-t) + 3*y2*t*t*(1-t) + y3*t*t*t
+ cmin = min(cmin, y)
+ cmax = max(cmax, y)
+ return cmin, cmax
+
+def computeBBox(aList,mat=[[1,0,0],[0,1,0]]):
+ bbox=None
+ for node in aList:
+ m = parseTransform(node.get('transform'))
+ m = composeTransform(mat,m)
+ #TODO: text not supported!
+ d = None
+ if node.get("d"):
+ d = node.get('d')
+ elif node.get('points'):
+ d = 'M' + node.get('points')
+ elif node.tag in [ inkex.addNS('rect','svg'), 'rect', inkex.addNS('image','svg'), 'image' ]:
+ d = 'M' + node.get('x', '0') + ',' + node.get('y', '0') + \
+ 'h' + node.get('width') + 'v' + node.get('height') + \
+ 'h-' + node.get('width')
+ elif node.tag in [ inkex.addNS('line','svg'), 'line' ]:
+ d = 'M' + node.get('x1') + ',' + node.get('y1') + \
+ ' ' + node.get('x2') + ',' + node.get('y2')
+ elif node.tag in [ inkex.addNS('circle','svg'), 'circle', \
+ inkex.addNS('ellipse','svg'), 'ellipse' ]:
+ rx = node.get('r')
+ if rx is not None:
+ ry = rx
+ else:
+ rx = node.get('rx')
+ ry = node.get('ry')
+ cx = float(node.get('cx', '0'))
+ cy = float(node.get('cy', '0'))
+ x1 = cx - float(rx)
+ x2 = cx + float(rx)
+ d = 'M %f %f ' % (x1, cy) + \
+ 'A' + rx + ',' + ry + ' 0 1 0 %f,%f' % (x2, cy) + \
+ 'A' + rx + ',' + ry + ' 0 1 0 %f,%f' % (x1, cy)
+
+ if d is not None:
+ p = cubicsuperpath.parsePath(d)
+ applyTransformToPath(m,p)
+ bbox=boxunion(refinedBBox(p),bbox)
+
+ elif node.tag == inkex.addNS('use','svg') or node.tag=='use':
+ refid=node.get(inkex.addNS('href','xlink'))
+ path = '//*[@id="%s"]' % refid[1:]
+ refnode = node.xpath(path)
+ bbox=boxunion(computeBBox(refnode,m),bbox)
+
+ bbox=boxunion(computeBBox(node,m),bbox)
+ return bbox
+
+
+# vim: expandtab shiftwidth=4 tabstop=8 softtabstop=4 fileencoding=utf-8 textwidth=99
--
cgit