Replace dxf12 output with a pure python implementation

4 files changed, 165 insertions, 28 deletions

diff --git a/share/extensions/dxf12_outlines.inx b/share/extensions/dxf12_outlines.inx
new file mode 100644
index 000000000..1bcc8e7db
--- /dev/null
+++ b/share/extensions/dxf12_outlines.inx
@@ -0,0 +1,20 @@
+<inkscape-extension>
+    <_name>myDXF Output</_name>
+    <id>org.ekips.output.dxf12_outlines</id>
+        <dependency type="extension">org.inkscape.output.svg.inkscape</dependency>
+        <dependency type="executable" location="extensions">inkex.py</dependency>
+        <dependency type="executable" location="extensions">simpletransform.py</dependency>
+        <dependency type="executable" location="extensions">cubicsuperpath.py</dependency>
+        <dependency type="executable" location="extensions">cspsubdiv.py</dependency>
+    <output>
+                <extension>.dxf</extension>
+                <mimetype>image/dxf</mimetype>
+                <_filetypename>Desktop Cutting Plotter (AutoCAD DXF R12) (*.dxf)</_filetypename>
+                <_filetypetooltip>DXF R12 Output</_filetypetooltip>
+                <dataloss>TRUE</dataloss>
+    </output>
+    <script>
+        <command reldir="extensions" interpreter="python">dxf12_outlines.py</command>
+        <helper_extension>org.inkscape.output.svg.inkscape</helper_extension>
+    </script>
+</inkscape-extension>
diff --git a/share/extensions/dxf12_outlines.py b/share/extensions/dxf12_outlines.py
new file mode 100644
index 000000000..89d6c3a25
--- /dev/null
+++ b/share/extensions/dxf12_outlines.py
@@ -0,0 +1,145 @@
+#!/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
+# - 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
+#
+
+import inkex, simplepath, cubicsuperpath, cspsubdiv, re
+
+import simpletransform
+
+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 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', '1' )  #Change the Line Color
+        self.dxf_insert_code(  '10', '%f' % csp[0][0] )
+        self.dxf_insert_code(  '20', '%f' % csp[0][1] ) 
+        self.dxf_insert_code(  '11', '%f' % csp[1][0] )
+        self.dxf_insert_code(  '21', '%f' % csp[1][1] )
+        
+    def dxf_path_to_lines(self,layer,p):
+        f = self.flatness
+        is_flat = 0
+        while is_flat < 1:
+            try:
+                cspsubdiv.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 = 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', '"DXF R12 Output" (www.mydxf.blogspot.com)' )
+        self.dxf_add( r12_header )
+        
+        scale = 25.4/90.0
+        h = self.unittouu(self.getDocumentHeight())
+        
+        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:
+            #if layer == 'Brackets Drill':
+                self.dxf_path_to_lines(layer,p)
+            else:    
+                self.dxf_path_to_point(layer,p)
+                
+        self.dxf_add( r12_footer )
+        
+e = MyEffect()
+e.affect()
diff --git a/share/extensions/dxf_output.inx b/share/extensions/dxf_output.inx
deleted file mode 100644
index 7f43fc131..000000000
--- a/share/extensions/dxf_output.inx
+++ /dev/null
@@ -1,18 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<inkscape-extension xmlns="http://www.inkscape.org/namespace/inkscape/extension">
-    <_name>DXF Output</_name>
-    <id>org.inkscape.output.dxf</id>
-    <dependency type="extension">org.inkscape.print.ps.cairo</dependency>
-    <dependency type="executable" location="extensions">ps2dxf.sh</dependency>
-    <dependency type="executable" _description="pstoedit must be installed to run; see http://www.pstoedit.net/pstoedit">pstoedit</dependency>
-    <output>
-        <extension>.dxf</extension>
-        <mimetype>image/dxf</mimetype>
-        <_filetypename>AutoCAD DXF R12 (*.dxf)</_filetypename>
-        <_filetypetooltip>DXF file written by pstoedit</_filetypetooltip>
-    </output>
-    <script>
-        <command reldir="extensions">ps2dxf.sh</command>
-        <helper_extension>org.inkscape.print.ps.cairo</helper_extension>
-    </script>
-</inkscape-extension>
diff --git a/share/extensions/ps2dxf.sh b/share/extensions/ps2dxf.sh
deleted file mode 100755
index 3479800e1..000000000
--- a/share/extensions/ps2dxf.sh
+++ /dev/null
@@ -1,10 +0,0 @@
-#!/bin/sh
-
-TMPDIR="${TMPDIR-/tmp}"
-TEMPFILENAME=`mktemp 2>/dev/null || echo "$TMPDIR/tmp-ps-$$.dxf"`
-pstoedit -f dxf "$1" "${TEMPFILENAME}" > /dev/null 2>&1
-rc=0
-cat < "${TEMPFILENAME}" || rc=1
-rm -f "${TEMPFILENAME}"
-exit $rc
-d
\ No newline at end of file