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-rwxr-xr-xshare/extensions/dxf12_outlines.py156
1 files changed, 156 insertions, 0 deletions
diff --git a/share/extensions/dxf12_outlines.py b/share/extensions/dxf12_outlines.py
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+++ b/share/extensions/dxf12_outlines.py
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+#!/usr/bin/env python
+# coding=utf-8
+#
+# 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
+# - added support for dxf R12, Nov. 2008 by Switcher
+# - brought together to replace ps2edit version 2018 by Martin Owens
+#
+# 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
+#
+
+from __future__ import absolute_import, print_function, unicode_literals
+
+import re
+
+import inkex
+import inkex.units
+from inkex.bezier import cspsubdiv
+
+r12_header = """ 0
+SECTION
+ 2
+HEADER
+ 9
+$ACADVER
+ 1
+AC1009
+ 9
+$EXTMIN
+ 10
+ 0
+ 20
+ 0
+ 9
+$EXTMAX
+ 10
+ 8.5
+ 20
+ 11
+ 0
+ENDSEC
+ 0
+SECTION
+ 2
+ENTITIES
+"""
+
+r12_footer = """ 0
+ENDSEC
+ 0
+EOF"""
+
+
+class DxfTwelve(inkex.OutputExtension):
+ """Create dxf12 output from the svg"""
+
+ def __init__(self):
+ super(DxfTwelve, self).__init__()
+ self.handle = 255
+ self.flatness = 0.1
+
+ def dxf_add(self, line):
+ self._stream.write(line.encode("utf-8"))
+
+ def dxf_insert_code(self, code, value):
+ self.dxf_add(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', '1' ) #Change the Line Color
+ self.dxf_insert_code("10", "{:f}".format(csp[0][0]))
+ self.dxf_insert_code("20", "{:f}".format(csp[0][1]))
+ self.dxf_insert_code("11", "{:f}".format(csp[1][0]))
+ self.dxf_insert_code("21", "{:f}".format(csp[1][1]))
+
+ def dxf_path_to_lines(self, layer, p):
+ f = self.flatness
+ is_flat = 0
+ while is_flat < 1:
+ try:
+ cspsubdiv(p, self.flatness)
+ 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 = inkex.Path(p).bounding_box() or inkex.BoundingBox(0, 0)
+ x, y = bbox.center
+ self.dxf_point(layer, x, y)
+
+ def save(self, stream):
+ self._stream = stream
+ self.dxf_insert_code("999", '"DXF R12 Output" (www.mydxf.blogspot.com)')
+ self.dxf_add(r12_header)
+
+ # Scale, but assume that the viewport is based on mm (dxf expects mm)
+ scale = self.svg.scale / inkex.units.convert_unit("1mm", "px")
+ h = self.svg.viewbox_height
+
+ path = "//svg:path"
+ for node in self.svg.xpath(path):
+ visible = True
+ for parent in node.iterancestors():
+ if isinstance(parent, (inkex.ClipPath, inkex.Mask)):
+ visible = False
+ break
+ if not visible:
+ continue
+
+ layer = (
+ node.getparent().label
+ ) # TODO this assumes that all elements are direct
+ # descendants of layers
+ if layer is None:
+ layer = "Layer 1"
+
+ node.transform = node.composed_transform()
+ node.transform = (
+ inkex.Transform([[scale, 0, 0], [0, -scale, h * scale]])
+ @ node.transform
+ )
+ node.apply_transform()
+ path = node.path.to_superpath()
+
+ if re.search("drill$", layer, re.I) is None:
+ # if layer == 'Brackets Drill':
+ self.dxf_path_to_lines(layer, path)
+ else:
+ self.dxf_path_to_point(layer, path)
+
+ self.dxf_add(r12_footer)
+
+
+if __name__ == "__main__":
+ DxfTwelve().run()