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#!/usr/bin/env python
'''
Copyright (C) 2005,2007,2008 Aaron Spike, aaron@ekips.org
Copyright (C) 2008 Alvin Penner, penner@vaxxine.com
- template dxf_outlines.dxf added Feb 2008 by 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
'''
import inkex, simplepath, cubicsuperpath, dxf_templates
class MyEffect(inkex.Effect):
def __init__(self):
inkex.Effect.__init__(self)
self.dxf = []
self.handle = 255 # initiallize handle for DXF ENTITY
def output(self):
print ''.join(self.dxf)
def dxf_add(self, str):
self.dxf.append(str)
def dxf_line(self,csp):
self.dxf_add(" 0\nLINE\n 5\n%x\n100\nAcDbEntity\n 8\n0\n100\nAcDbLine\n" % self.handle)
self.dxf_add(" 10\n%f\n 20\n%f\n 30\n0.0\n 11\n%f\n 21\n%f\n 31\n0.0\n" % (csp[0][0],csp[0][1],csp[1][0],csp[1][1]))
def dxf_spline(self,csp):
knots = 8
ctrls = 4
self.dxf_add(" 0\nSPLINE\n 5\n%x\n100\nAcDbEntity\n 8\n0\n100\nAcDbSpline\n" % self.handle)
self.dxf_add(" 70\n8\n 71\n3\n 72\n%d\n 73\n%d\n 74\n0\n" % (knots, ctrls))
for i in range(2):
for j in range(4):
self.dxf_add(" 40\n%d\n" % i)
for i in csp:
self.dxf_add(" 10\n%f\n 20\n%f\n 30\n0.0\n" % (i[0],i[1]))
def effect(self):
#References: Minimum Requirements for Creating a DXF File of a 3D Model By Paul Bourke
# NURB Curves: A Guide for the Uninitiated By Philip J. Schneider
self.dxf_add("999\nDXF created by Inkscape\n")
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):
d = node.get('d')
sim = simplepath.parsePath(d)
simplepath.scalePath(sim,scale,-scale)
simplepath.translatePath(sim,0,h*scale)
p = cubicsuperpath.CubicSuperPath(sim)
for sub in p:
for i in range(len(sub)-1):
# generate unique handle for DXF ENTITY
self.handle += 1
s = sub[i]
e = sub[i+1]
if s[1] == s[2] and e[0] == e[1]:
self.dxf_line([s[1],e[1]])
else:
self.dxf_spline([s[1],s[2],e[0],e[1]])
self.dxf_add(dxf_templates.r14_footer)
if __name__ == '__main__':
e = MyEffect()
e.affect()
# vim: expandtab shiftwidth=4 tabstop=8 softtabstop=4 encoding=utf-8 textwidth=99
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