Inicio » Maren Hachmann » Resources » Dxf Outlines test
  1. #!/usr/bin/env python
  2. '''
  3. Copyright (C) 2005,2007,2008 Aaron Spike, aaron@ekips.org
  4. Copyright (C) 2008,2010 Alvin Penner, penner@vaxxine.com
  6. This file output script for Inkscape creates a AutoCAD R14 DXF file.
  7. The spec can be found here: http://www.autodesk.com/techpubs/autocad/acadr14/dxf/index.htm.
  9. File history:
  10. - template dxf_outlines.dxf added Feb 2008 by Alvin Penner
  11. - ROBO-Master output option added Aug 2008
  12. - ROBO-Master multispline output added Sept 2008
  13. - LWPOLYLINE output modification added Dec 2008
  14. - toggle between LINE/LWPOLYLINE added Jan 2010
  15. - support for transform elements added July 2010
  16. - support for layers added July 2010
  17. - support for rectangle added Dec 2010
  19. This program is free software; you can redistribute it and/or modify
  20. it under the terms of the GNU General Public License as published by
  21. the Free Software Foundation; either version 2 of the License, or
  22. (at your option) any later version.
  24. This program is distributed in the hope that it will be useful,
  25. but WITHOUT ANY WARRANTY; without even the implied warranty of
  26. MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  27. GNU General Public License for more details.
  29. You should have received a copy of the GNU General Public License
  30. along with this program; if not, write to the Free Software
  31. Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  32. '''
  33. # standard library
  34. import math
  35. # local library
  36. import inkex
  37. import simplestyle
  38. import simpletransform
  39. import cubicsuperpath
  40. import coloreffect
  41. import dxf_templates
  43. try:
  44. from numpy import *
  45. from numpy.linalg import solve
  46. except:
  47. # Initialize gettext for messages outside an inkex derived class
  48. inkex.localize()
  49. inkex.errormsg(_("Failed to import the numpy or numpy.linalg modules. These modules are required by this extension. Please install them and try again."))
  50. inkex.sys.exit()
  52. def pointdistance((x1,y1),(x2,y2)):
  53. return math.sqrt(((x2 - x1) ** 2) + ((y2 - y1) ** 2))
  55. def get_fit(u, csp, col):
  56. return (1-u)**3*csp[0][col] + 3*(1-u)**2*u*csp[1][col] + 3*(1-u)*u**2*csp[2][col] + u**3*csp[3][col]
  58. def get_matrix(u, i, j):
  59. if j == i + 2:
  60. return (u[i]-u[i-1])*(u[i]-u[i-1])/(u[i+2]-u[i-1])/(u[i+1]-u[i-1])
  61. elif j == i + 1:
  62. return ((u[i]-u[i-1])*(u[i+2]-u[i])/(u[i+2]-u[i-1]) + (u[i+1]-u[i])*(u[i]-u[i-2])/(u[i+1]-u[i-2]))/(u[i+1]-u[i-1])
  63. elif j == i:
  64. return (u[i+1]-u[i])*(u[i+1]-u[i])/(u[i+1]-u[i-2])/(u[i+1]-u[i-1])
  65. else:
  66. return 0
  68. class MyEffect(inkex.Effect):
  69. def __init__(self):
  70. inkex.Effect.__init__(self)
  71. self.OptionParser.add_option("-R", "--ROBO", action="store",
  72. type="string", dest="ROBO",
  73. default=False)
  74. self.OptionParser.add_option("-P", "--POLY", action="store",
  75. type="string", dest="POLY",
  76. default=True)
  77. self.OptionParser.add_option("--units", action="store",
  78. type="string", dest="units",
  79. default="72./96") # Points
  80. self.OptionParser.add_option("--encoding", action="store",
  81. type="string", dest="char_encode",
  82. default="latin_1")
  83. self.OptionParser.add_option("--tab", action="store",
  84. type="string", dest="tab")
  85. self.OptionParser.add_option("--inputhelp", action="store",
  86. type="string", dest="inputhelp")
  87. self.OptionParser.add_option("--layer_option", action="store",
  88. type="string", dest="layer_option",
  89. default="all")
  90. self.OptionParser.add_option("--layer_name", action="store",
  91. type="string", dest="layer_name")
  93. self.dxf = []
  94. self.handle = 255 # handle for DXF ENTITY
  95. self.layers = ['0']
  96. self.layer = '0' # mandatory layer
  97. self.layernames = []
  98. self.csp_old = [[0.0,0.0]]*4 # previous spline
  99. self.d = array([0], float) # knot vector
  100. self.poly = [[0.0,0.0]] # LWPOLYLINE data
  101. def output(self):
  102. print ''.join(self.dxf)
  103. def dxf_add(self, str):
  104. self.dxf.append(str.encode(self.options.char_encode))
  105. def dxf_line(self,csp):
  106. self.handle += 1
  107. self.dxf_add(" 0\nLINE\n 5\n%x\n100\nAcDbEntity\n 8\n%s\n 62\n%d\n100\nAcDbLine\n" % (self.handle, self.layer, self.color))
  108. 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]))
  109. def LWPOLY_line(self,csp):
  110. if (abs(csp[0][0] - self.poly[-1][0]) > .0001
  111. or abs(csp[0][1] - self.poly[-1][1]) > .0001):
  112. self.LWPOLY_output() # terminate current polyline
  113. self.poly = [csp[0]] # initiallize new polyline
  114. self.color_LWPOLY = self.color
  115. self.layer_LWPOLY = self.layer
  116. self.poly.append(csp[1])
  117. def LWPOLY_output(self):
  118. if len(self.poly) == 1:
  119. return
  120. self.handle += 1
  121. closed = 1
  122. if (abs(self.poly[0][0] - self.poly[-1][0]) > .0001
  123. or abs(self.poly[0][1] - self.poly[-1][1]) > .0001):
  124. closed = 0
  125. self.dxf_add(" 0\nLWPOLYLINE\n 5\n%x\n100\nAcDbEntity\n 8\n%s\n 62\n%d\n100\nAcDbPolyline\n 90\n%d\n 70\n%d\n" % (self.handle, self.layer_LWPOLY, self.color_LWPOLY, len(self.poly) - closed, closed))
  126. for i in range(len(self.poly) - closed):
  127. self.dxf_add(" 10\n%f\n 20\n%f\n 30\n0.0\n" % (self.poly[i][0],self.poly[i][1]))
  128. def dxf_spline(self,csp):
  129. knots = 8
  130. ctrls = 4
  131. self.handle += 1
  132. self.dxf_add(" 0\nSPLINE\n 5\n%x\n100\nAcDbEntity\n 8\n%s\n 62\n%d\n100\nAcDbSpline\n" % (self.handle, self.layer, self.color))
  133. self.dxf_add(" 70\n8\n 71\n3\n 72\n%d\n 73\n%d\n 74\n0\n" % (knots, ctrls))
  134. for i in range(2):
  135. for j in range(4):
  136. self.dxf_add(" 40\n%d\n" % i)
  137. for i in csp:
  138. self.dxf_add(" 10\n%f\n 20\n%f\n 30\n0.0\n" % (i[0],i[1]))
  139. def ROBO_spline(self,csp):
  140. # this spline has zero curvature at the endpoints, as in ROBO-Master
  141. if (abs(csp[0][0] - self.csp_old[3][0]) > .0001
  142. or abs(csp[0][1] - self.csp_old[3][1]) > .0001
  143. or abs((csp[1][1]-csp[0][1])*(self.csp_old[3][0]-self.csp_old[2][0]) - (csp[1][0]-csp[0][0])*(self.csp_old[3][1]-self.csp_old[2][1])) > .001):
  144. self.ROBO_output() # terminate current spline
  145. self.xfit = array([csp[0][0]], float) # initiallize new spline
  146. self.yfit = array([csp[0][1]], float)
  147. self.d = array([0], float)
  148. self.color_ROBO = self.color
  149. self.layer_ROBO = self.layer
  150. self.xfit = concatenate((self.xfit, zeros((3)))) # append to current spline
  151. self.yfit = concatenate((self.yfit, zeros((3))))
  152. self.d = concatenate((self.d, zeros((3))))
  153. for i in range(1, 4):
  154. j = len(self.d) + i - 4
  155. self.xfit[j] = get_fit(i/3.0, csp, 0)
  156. self.yfit[j] = get_fit(i/3.0, csp, 1)
  157. self.d[j] = self.d[j-1] + pointdistance((self.xfit[j-1],self.yfit[j-1]),(self.xfit[j],self.yfit[j]))
  158. self.csp_old = csp
  159. def ROBO_output(self):
  160. if len(self.d) == 1:
  161. return
  162. fits = len(self.d)
  163. ctrls = fits + 2
  164. knots = ctrls + 4
  165. self.xfit = concatenate((self.xfit, zeros((2)))) # pad with 2 endpoint constraints
  166. self.yfit = concatenate((self.yfit, zeros((2)))) # pad with 2 endpoint constraints
  167. self.d = concatenate((self.d, zeros((6)))) # pad with 3 duplicates at each end
  168. self.d[fits+2] = self.d[fits+1] = self.d[fits] = self.d[fits-1]
  169. solmatrix = zeros((ctrls,ctrls), dtype=float)
  170. for i in range(fits):
  171. solmatrix[i,i] = get_matrix(self.d, i, i)
  172. solmatrix[i,i+1] = get_matrix(self.d, i, i+1)
  173. solmatrix[i,i+2] = get_matrix(self.d, i, i+2)
  174. solmatrix[fits, 0] = self.d[2]/self.d[fits-1] # curvature at start = 0
  175. solmatrix[fits, 1] = -(self.d[1] + self.d[2])/self.d[fits-1]
  176. solmatrix[fits, 2] = self.d[1]/self.d[fits-1]
  177. solmatrix[fits+1, fits-1] = (self.d[fits-1] - self.d[fits-2])/self.d[fits-1] # curvature at end = 0
  178. solmatrix[fits+1, fits] = (self.d[fits-3] + self.d[fits-2] - 2*self.d[fits-1])/self.d[fits-1]
  179. solmatrix[fits+1, fits+1] = (self.d[fits-1] - self.d[fits-3])/self.d[fits-1]
  180. xctrl = solve(solmatrix, self.xfit)
  181. yctrl = solve(solmatrix, self.yfit)
  182. self.handle += 1
  183. self.dxf_add(" 0\nSPLINE\n 5\n%x\n100\nAcDbEntity\n 8\n%s\n 62\n%d\n100\nAcDbSpline\n" % (self.handle, self.layer_ROBO, self.color_ROBO))
  184. self.dxf_add(" 70\n0\n 71\n3\n 72\n%d\n 73\n%d\n 74\n%d\n" % (knots, ctrls, fits))
  185. for i in range(knots):
  186. self.dxf_add(" 40\n%f\n" % self.d[i-3])
  187. for i in range(ctrls):
  188. self.dxf_add(" 10\n%f\n 20\n%f\n 30\n0.0\n" % (xctrl[i],yctrl[i]))
  189. for i in range(fits):
  190. self.dxf_add(" 11\n%f\n 21\n%f\n 31\n0.0\n" % (self.xfit[i],self.yfit[i]))
  192. def process_shape(self, node, mat):
  193. rgb = (0,0,0)
  194. style = node.get('style')
  195. if style:
  196. style = simplestyle.parseStyle(style)
  197. if style.has_key('stroke'):
  198. if style['stroke'] and style['stroke'] != 'none' and style['stroke'][0:3] != 'url':
  199. rgb = simplestyle.parseColor(style['stroke'])
  200. hsl = coloreffect.ColorEffect.rgb_to_hsl(coloreffect.ColorEffect(),rgb[0]/255.0,rgb[1]/255.0,rgb[2]/255.0)
  201. self.color = 7 # default is black
  202. if hsl[2]:
  203. self.color = 1 + (int(6*hsl[0] + 0.5) % 6) # use 6 hues
  204. if node.tag == inkex.addNS('path','svg'):
  205. d = node.get('d')
  206. if not d:
  207. return
  208. p = cubicsuperpath.parsePath(d)
  209. elif node.tag == inkex.addNS('rect','svg'):
  210. x = float(node.get('x', 0))
  211. y = float(node.get('y', 0))
  212. width = float(node.get('width'))
  213. height = float(node.get('height'))
  214. d = "m %s,%s %s,%s %s,%s %s,%s z" % (x, y, width, 0, 0, height, -width, 0)
  215. p = cubicsuperpath.parsePath(d)
  216. elif node.tag == inkex.addNS('line','svg'):
  217. x1 = float(node.get('x1', 0))
  218. x2 = float(node.get('x2', 0))
  219. y1 = float(node.get('y1', 0))
  220. y2 = float(node.get('y2', 0))
  221. d = "M %s,%s L %s,%s" % (x1, y1, x2, y2)
  222. p = cubicsuperpath.parsePath(d)
  223. elif node.tag == inkex.addNS('circle','svg'):
  224. cx = float(node.get('cx', 0))
  225. cy = float(node.get('cy', 0))
  226. r = float(node.get('r'))
  227. d = "m %s,%s a %s,%s 0 0 1 %s,%s %s,%s 0 0 1 %s,%s z" % (cx + r, cy, r, r, -2*r, 0, r, r, 2*r, 0)
  228. p = cubicsuperpath.parsePath(d)
  229. elif node.tag == inkex.addNS('ellipse','svg'):
  230. cx = float(node.get('cx', 0))
  231. cy = float(node.get('cy', 0))
  232. rx = float(node.get('rx'))
  233. ry = float(node.get('ry'))
  234. d = "m %s,%s a %s,%s 0 0 1 %s,%s %s,%s 0 0 1 %s,%s z" % (cx + rx, cy, rx, ry, -2*rx, 0, rx, ry, 2*rx, 0)
  235. p = cubicsuperpath.parsePath(d)
  236. else:
  237. return
  238. trans = node.get('transform')
  239. if trans:
  240. mat = simpletransform.composeTransform(mat, simpletransform.parseTransform(trans))
  241. simpletransform.applyTransformToPath(mat, p)
  242. for sub in p:
  243. for i in range(len(sub)-1):
  244. s = sub[i]
  245. e = sub[i+1]
  246. if s[1] == s[2] and e[0] == e[1]:
  247. if (self.options.POLY == 'true'):
  248. self.LWPOLY_line([s[1],e[1]])
  249. else:
  250. self.dxf_line([s[1],e[1]])
  251. elif (self.options.ROBO == 'true'):
  252. self.ROBO_spline([s[1],s[2],e[0],e[1]])
  253. else:
  254. self.dxf_spline([s[1],s[2],e[0],e[1]])
  256. def process_clone(self, node):
  257. trans = node.get('transform')
  258. x = node.get('x')
  259. y = node.get('y')
  260. mat = [[1.0, 0.0, 0.0], [0.0, 1.0, 0.0]]
  261. if trans:
  262. mat = simpletransform.composeTransform(mat, simpletransform.parseTransform(trans))
  263. if x:
  264. mat = simpletransform.composeTransform(mat, [[1.0, 0.0, float(x)], [0.0, 1.0, 0.0]])
  265. if y:
  266. mat = simpletransform.composeTransform(mat, [[1.0, 0.0, 0.0], [0.0, 1.0, float(y)]])
  267. # push transform
  268. if trans or x or y:
  269. self.groupmat.append(simpletransform.composeTransform(self.groupmat[-1], mat))
  270. # get referenced node
  271. refid = node.get(inkex.addNS('href','xlink'))
  272. refnode = self.getElementById(refid[1:])
  273. if refnode is not None:
  274. if refnode.tag == inkex.addNS('g','svg'):
  275. self.process_group(refnode)
  276. elif refnode.tag == inkex.addNS('use', 'svg'):
  277. self.process_clone(refnode)
  278. else:
  279. self.process_shape(refnode, self.groupmat[-1])
  280. # pop transform
  281. if trans or x or y:
  282. self.groupmat.pop()
  284. def process_group(self, group):
  285. if group.get(inkex.addNS('groupmode', 'inkscape')) == 'layer':
  286. style = group.get('style')
  287. if style:
  288. style = simplestyle.parseStyle(style)
  289. if style.has_key('display'):
  290. if style['display'] == 'none' and self.options.layer_option and self.options.layer_option=='visible':
  291. return
  292. layer = group.get(inkex.addNS('label', 'inkscape'))
  293. if self.options.layer_name and self.options.layer_option and self.options.layer_option=='name' and not layer.lower() in self.options.layer_name:
  294. return
  296. layer = layer.replace(' ', '_')
  297. if layer in self.layers:
  298. self.layer = layer
  299. trans = group.get('transform')
  300. if trans:
  301. self.groupmat.append(simpletransform.composeTransform(self.groupmat[-1], simpletransform.parseTransform(trans)))
  302. for node in group:
  303. if node.tag == inkex.addNS('g','svg'):
  304. self.process_group(node)
  305. elif node.tag == inkex.addNS('use', 'svg'):
  306. self.process_clone(node)
  307. else:
  308. self.process_shape(node, self.groupmat[-1])
  309. if trans:
  310. self.groupmat.pop()
  312. def effect(self):
  313. #Warn user if name match field is empty
  314. if self.options.layer_option and self.options.layer_option=='name' and not self.options.layer_name:
  315. inkex.errormsg(_("Error: Field 'Layer match name' must be filled when using 'By name match' option"))
  316. inkex.sys.exit()
  317. #Split user layer data into a list: "layerA,layerb,LAYERC" becomes ["layera", "layerb", "layerc"]
  318. if self.options.layer_name:
  319. self.options.layer_name = self.options.layer_name.lower().split(',')
  321. #References: Minimum Requirements for Creating a DXF File of a 3D Model By Paul Bourke
  322. # NURB Curves: A Guide for the Uninitiated By Philip J. Schneider
  323. # The NURBS Book By Les Piegl and Wayne Tiller (Springer, 1995)
  324. # self.dxf_add("999\nDXF created by Inkscape\n") # Some programs do not take comments in DXF files (KLayout 0.21.12 for example)
  325. self.dxf_add(dxf_templates.r14_header)
  326. for node in self.document.getroot().xpath('//svg:g', namespaces=inkex.NSS):
  327. if node.get(inkex.addNS('groupmode', 'inkscape')) == 'layer':
  328. layer = node.get(inkex.addNS('label', 'inkscape'))
  329. self.layernames.append(layer.lower())
  330. if self.options.layer_name and self.options.layer_option and self.options.layer_option=='name' and not layer.lower() in self.options.layer_name:
  331. continue
  332. layer = layer.replace(' ', '_')
  333. if layer and not layer in self.layers:
  334. self.layers.append(layer)
  335. self.dxf_add(" 2\nLAYER\n 5\n2\n100\nAcDbSymbolTable\n 70\n%s\n" % len(self.layers))
  336. for i in range(len(self.layers)):
  337. self.dxf_add(" 0\nLAYER\n 5\n%x\n100\nAcDbSymbolTableRecord\n100\nAcDbLayerTableRecord\n 2\n%s\n 70\n0\n 6\nCONTINUOUS\n" % (i + 80, self.layers[i]))
  338. self.dxf_add(dxf_templates.r14_style)
  340. scale = eval(self.options.units)
  341. if not scale:
  342. scale = 25.4/96 # if no scale is specified, assume inch as baseunit
  343. h = self.unittouu(self.getDocumentHeight())
  344. self.groupmat = [[[scale, 0.0, 0.0], [0.0, -scale, h*scale]]]
  345. doc = self.document.getroot()
  346. self.process_group(doc)
  347. if self.options.ROBO == 'true':
  348. self.ROBO_output()
  349. if self.options.POLY == 'true':
  350. self.LWPOLY_output()
  351. self.dxf_add(dxf_templates.r14_footer)
  352. #Warn user if layer data seems wrong
  353. if self.options.layer_name and self.options.layer_option and self.options.layer_option=='name':
  354. for layer in self.options.layer_name:
  355. if not layer in self.layernames:
  356. inkex.errormsg(_("Warning: Layer '%s' not found!") % (layer))
  358. if __name__ == '__main__':
  359. e = MyEffect()
  360. e.affect()
  363. # vim: expandtab shiftwidth=4 tabstop=8 softtabstop=4 fileencoding=utf-8 textwidth=99
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808

Dxf Outlines test

by Inkscape contributors

For Tina for testing. Hope it works, else we'll find a different solution.

Private

Lines
363
Words
1607
Tamaño
17,6 KB
Creado
Tipo
text/x-python
General Public License v2 (GPLv2)
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