171 lines
4.9 KiB
Python
Executable file
171 lines
4.9 KiB
Python
Executable file
#!/usr/bin/env python3
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# coding=utf-8
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#
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# Copyright (C) 2005,2007 Aaron Spike, aaron@ekips.org
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# - template dxf_outlines.dxf added Feb 2008 by Alvin Penner, penner@vaxxine.com
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# - layers, transformation, flattening added April 2008 by Bob Cook, bob@bobcookdev.com
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# - added support for dxf R12, Nov. 2008 by Switcher
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# - brought together to replace ps2edit version 2018 by Martin Owens
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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#
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from __future__ import absolute_import, print_function, unicode_literals
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import re
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import inkex
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import inkex.units
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from inkex.bezier import cspsubdiv
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r12_header = """ 0
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SECTION
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2
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HEADER
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9
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$ACADVER
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1
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AC1009
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9
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$EXTMIN
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10
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0
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20
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0
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9
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$EXTMAX
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10
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8.5
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20
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11
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0
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ENDSEC
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0
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SECTION
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2
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ENTITIES
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"""
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r12_footer = """ 0
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ENDSEC
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0
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EOF"""
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class DxfTwelve(inkex.OutputExtension):
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"""Create dxf12 output from the svg"""
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def __init__(self):
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super(DxfTwelve, self).__init__()
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self.handle = 255
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self.flatness = 0.1
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def dxf_add(self, line):
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self._stream.write(line.encode("utf-8"))
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def dxf_insert_code(self, code, value):
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self.dxf_add(code + "\n" + value + "\n")
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def dxf_line(self, layer, csp):
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self.dxf_insert_code("0", "LINE")
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self.dxf_insert_code("8", layer)
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# self.dxf_insert_code( '62', '1' ) #Change the Line Color
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self.dxf_insert_code("10", "{:f}".format(csp[0][0]))
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self.dxf_insert_code("20", "{:f}".format(csp[0][1]))
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self.dxf_insert_code("11", "{:f}".format(csp[1][0]))
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self.dxf_insert_code("21", "{:f}".format(csp[1][1]))
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def dxf_path_to_lines(self, layer, p):
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f = self.flatness
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is_flat = 0
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while is_flat < 1:
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try:
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cspsubdiv(p, self.flatness)
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is_flat = 1
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except:
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f += 0.1
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for sub in p:
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for i in range(len(sub) - 1):
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self.handle += 1
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s = sub[i]
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e = sub[i + 1]
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self.dxf_line(layer, [s[1], e[1]])
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def dxf_path_to_point(self, layer, p):
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bbox = inkex.Path(p).bounding_box() or inkex.BoundingBox(0, 0)
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x, y = bbox.center
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self.dxf_point(layer, x, y)
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def save(self, stream):
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# This extension only supports paths. Everything is converted to path.
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if len(self.svg.xpath("//svg:use|//svg:flowRoot|//svg:text")) > 0:
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self.preprocess(["flowRoot", "text"])
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self._stream = stream
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self.dxf_insert_code("999", '"DXF R12 Output" (www.mydxf.blogspot.com)')
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self.dxf_add(r12_header)
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# Scale, but assume that the viewport is based on mm (dxf expects mm)
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scale = self.svg.scale / inkex.units.convert_unit("1mm", "px")
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h = self.svg.viewbox_height
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for node in self.svg.iterdescendants():
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if not isinstance(
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node,
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(
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inkex.PathElement,
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inkex.Rectangle,
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inkex.Circle,
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inkex.Polygon,
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inkex.Polyline,
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inkex.Ellipse,
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inkex.Line,
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),
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):
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continue
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visible = True
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for parent in node.iterancestors():
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if isinstance(parent, (inkex.ClipPath, inkex.Mask, inkex.Defs)):
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visible = False
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break
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if not visible:
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continue
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layer = (
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node.getparent().label
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) # TODO this assumes that all elements are direct
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# descendants of layers
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if layer is None:
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layer = "Layer 1"
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node.transform = node.composed_transform()
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node.transform = (
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inkex.Transform([[scale, 0, 0], [0, -scale, h * scale]])
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@ node.transform
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)
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path = node.path.transform(node.transform).to_superpath()
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if re.search("drill$", layer, re.I) is None:
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# if layer == 'Brackets Drill':
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self.dxf_path_to_lines(layer, path)
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else:
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self.dxf_path_to_point(layer, path)
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self.dxf_add(r12_footer)
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if __name__ == "__main__":
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DxfTwelve().run()
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