1 files changed, 126 insertions, 0 deletions
diff --git a/share/extensions/plotter.py b/share/extensions/plotter.py
new file mode 100755
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+++ b/share/extensions/plotter.py
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+#!/usr/bin/env python
+# coding=utf-8
+#
+# Copyright (C) 2013 <Public Domain>
+#               2018 Martin Owens <doctormo@gmail.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., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+#
+
+import inkex
+from inkex.ports import Serial
+from inkex.localization import inkex_gettext as _
+
+import hpgl_encoder
+
+class Plot(inkex.EffectExtension):
+    """Generate a plot in HPGL output"""
+    def add_arguments(self, pars):
+        pars.add_argument('--tab')
+        pars.add_argument('--parallelPort', default='/dev/usb/lp2', help='Parallel port')
+        pars.add_argument('--serialPort', default='COM1', help='Serial port')
+        pars.add_argument('--serialBaudRate', default='9600', help='Serial Baud rate')
+        pars.add_argument('--serialByteSize', default='eight', help='Serial byte size')
+        pars.add_argument('--serialStopBits', default='one', help='Serial stop bits')
+        pars.add_argument('--serialParity', default='none', help='Serial parity')
+        pars.add_argument('--serialFlowControl', default='0', help='Flow control')
+        pars.add_argument('--resolutionX', type=float, default=1016.0, help='Resolution X (dpi)')
+        pars.add_argument('--resolutionY', type=float, default=1016.0, help='Resolution Y (dpi)')
+        pars.add_argument('--pen', type=int, default=1, help='Pen number')
+        pars.add_argument('--force', type=int, default=24, help='Pen force (g)')
+        pars.add_argument('--speed', type=int, default=20, help='Pen speed (cm/s)')
+        pars.add_argument('--orientation', default='90', help='Rotation (Clockwise)')
+        pars.add_argument('--mirrorX', type=inkex.Boolean, default=False, help='Mirror X axis')
+        pars.add_argument('--mirrorY', type=inkex.Boolean, default=False, help='Mirror Y axis')
+        pars.add_argument('--center', type=inkex.Boolean, default=False, help='Center zero point')
+        pars.add_argument('--overcut', type=float, default=1.0, help='Overcut (mm)')
+        pars.add_argument('--precut', type=inkex.Boolean, default=True, help='Use precut')
+        pars.add_argument('--flat', type=float, default=1.2, help='Curve flatness')
+        pars.add_argument('--autoAlign', type=inkex.Boolean, default=True, help='Auto align')
+        pars.add_argument('--toolOffset', type=float, default=0.25,\
+            help='Tool (Knife) offset correction (mm)')
+        pars.add_argument('--portType', type=self.arg_method('to'),\
+            default=self.to_serial, dest="to_port", help='Port type')
+        pars.add_argument('--commandLanguage', type=self.arg_method('convert'),\
+            default=self.convert_hpgl, dest="to_language", help='Command Language Filter')
+
+    def effect(self):
+        # get hpgl data
+        encoder = hpgl_encoder.hpglEncoder(self)
+        try:
+            self.options.to_port(self.options.to_language(encoder.getHpgl()))
+        except hpgl_encoder.NoPathError:
+            raise inkex.AbortExtension(_("No paths where found. Please convert objects to paths."))
+
+    def convert_hpgl(self, hpgl):
+        """Convert raw HPGL to HPGL"""
+        init = 'IN'
+        if self.options.force > 0:
+            init += ';FS%d' % self.options.force
+        if self.options.speed > 0:
+            init += ';VS%d' % self.options.speed
+        return init + hpgl + ';PU0,0;SP0;IN; '
+
+    def convert_dmpl(self, hpgl):
+        """Convert HPGL to DMPL"""
+        # ;: = Initialise plotter
+        # H = Home position
+        # A = Absolute pen positioning
+        # Ln = Line type
+        # Pn = Pen select
+        # Vn = velocity
+        # ECn = Coordinate addressing, 1: 0.001 inch, 5: 0.005 inch, M: 0.1 mm
+        # D = Pen down
+        # U = Pen up
+        # Z = Reset plotter
+        # n,n, = Coordinate pair
+        hpgl = hpgl.replace(';', ',')
+        hpgl = hpgl.replace('SP', 'P')
+        hpgl = hpgl.replace('PU', 'U')
+        hpgl = hpgl.replace('PD', 'D')
+        init = ';:HAL0'
+        if self.options.speed > 0:
+            init += 'V%d' % self.options.speed
+        init += 'EC1'
+        return init + hpgl[1:] + ',P0,U0,0,Z '
+
+    def convert_knk(self, hpgl):
+        """Convert HPGL to KNK Plotter Language"""
+        init = 'ZG'
+        if self.options.force > 0:
+            init += ';FS%d' % self.options.force
+        if self.options.speed > 0:
+            init += ';VS%d' % self.options.speed
+        return init + hpgl + ';SP0;PU0,0;@ '
+
+    def to_parallel(self, hpgl):
+        """Output to hgpl to a parallel port"""
+        port = open(self.options.parallelPort, "wb")
+        port.write(hpgl.encode('utf8'))
+        port.close()
+
+    def to_serial(self, hpgl):
+        """Output to hgpl to a serial port"""
+        with Serial(self.options.serialPort,
+                    baud=self.options.serialBaudRate,
+                    stop=self.options.serialStopBits,
+                    size=self.options.serialByteSize,
+                    flow=self.options.serialFlowControl,
+                    parity=self.options.serialParity,
+                   ) as comx:
+            comx.write(hpgl.encode('utf8'))
+
+if __name__ == '__main__':
+    Plot().run()