114 lines
5.6 KiB
Python
114 lines
5.6 KiB
Python
#!/usr/bin/env python3
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import sys
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import os
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import inkex
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import tempfile
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import subprocess
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from subprocess import Popen, PIPE
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from lxml import etree
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from inkex import Transform
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class PlyCutter(inkex.EffectExtension):
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def add_arguments(self, pars):
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pars.add_argument("--tab")
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pars.add_argument("--infile")
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pars.add_argument("--resizetoimport", type=inkex.Boolean, default=True, help="Resize the canvas to the imported drawing's bounding box")
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pars.add_argument("--extraborder", type=float, default=0.0)
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pars.add_argument("--extraborder_units", default="mm")
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pars.add_argument("--thickness", type=float, default=6.000, help="Set the thickness of sheets to find.")
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pars.add_argument("--debug", type=inkex.Boolean, default=False, help="Turn on debugging")
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pars.add_argument("--min_finger_width", type=float, default=3.000, help="Set minimum width for generated fingers.")
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pars.add_argument("--max_finger_width", type=float, default=5.000, help="Set maximum width for generated fingers.")
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pars.add_argument("--support_radius", type=float, default=12.000, help="Set maximum range for generating material on a sheet where neither surface is visible")
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pars.add_argument("--final_dilation", default=0.05, type=float, help="Final dilation (laser cutter kerf compensation)")
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pars.add_argument("--random_seed", type=int, default=42, help="Random seed for pseudo-random heuristics")
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def effect(self):
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stl_input = self.options.infile
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if not os.path.exists(stl_input):
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inkex.utils.debug("The input file does not exist. Please select a proper file and try again.")
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exit(1)
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# Prepare output
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basename = os.path.splitext(os.path.basename(stl_input))[0]
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svg_output = os.path.join(tempfile.gettempdir(), basename + ".svg")
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# Clean up possibly previously generated output file from plycutter
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if os.path.exists(svg_output):
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try:
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os.remove(svg_output)
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except OSError as e:
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inkex.utils.debug("Error while deleting previously generated output file " + stl_input)
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# Run PlyCutter
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plycutter_cmd = "plycutter "
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plycutter_cmd += "--thickness " + str(self.options.thickness) + " "
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if self.options.debug == True: plycutter_cmd += "--debug "
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plycutter_cmd += "--min_finger_width " + str(self.options.min_finger_width) + " "
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plycutter_cmd += "--max_finger_width " + str(self.options.max_finger_width) + " "
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plycutter_cmd += "--support_radius " + str(self.options.support_radius) + " "
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plycutter_cmd += "--final_dilation " + str(self.options.final_dilation) + " "
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plycutter_cmd += "--random_seed " + str(self.options.random_seed) + " "
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plycutter_cmd += "--format svg " #static
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plycutter_cmd += "-o \"" + svg_output + "\" "
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plycutter_cmd += "\"" + stl_input + "\""
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#print command
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#inkex.utils.debug(plycutter_cmd)
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#create a new env for subprocess which does not contain extensions dir because there's a collision with "rtree.py"
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pypath = ''
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for d in sys.path:
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if d != '/usr/share/inkscape/extensions':
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pypath = pypath + d + ';'
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neutral_env = os.environ.copy()
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neutral_env['PYTHONPATH'] = pypath
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p = Popen(plycutter_cmd, shell=True, stdout=PIPE, stderr=PIPE, env=neutral_env)
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stdout, stderr = p.communicate()
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p.wait()
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if p.returncode != 0:
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inkex.utils.debug("PlyCutter failed: %d %s %s" % (p.returncode,
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str(stdout).replace('\\n', '\n').replace('\\t', '\t'),
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str(stderr).replace('\\n', '\n').replace('\\t', '\t'))
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)
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exit(1)
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elif self.options.debug is True:
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inkex.utils.debug("PlyCutter debug output: %d %s %s" % (p.returncode,
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str(stdout).replace('\\n', '\n').replace('\\t', '\t'),
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str(stderr).replace('\\n', '\n').replace('\\t', '\t'))
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)
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# Write the generated SVG into InkScape's canvas
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try:
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stream = open(svg_output, 'r')
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except FileNotFoundError as e:
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inkex.utils.debug("There was no SVG output generated by PlyCutter. Please check your model file.")
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exit(1)
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p = etree.XMLParser(huge_tree=True)
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doc = etree.parse(stream, parser=etree.XMLParser(huge_tree=True)).getroot()
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stream.close()
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g = inkex.Group(id=self.svg.get_unique_id("plycutter-"))
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g.insert(0, inkex.Desc("Imported file: {}".format(self.options.infile)))
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self.svg.get_current_layer().add(g)
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for element in doc.iter("{http://www.w3.org/2000/svg}path"):
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g.append(element)
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#Adjust viewport and width/height to have the import at the center of the canvas
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if self.options.resizetoimport:
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bbox = g.bounding_box() #does not work correctly if only 2 objects are inside (strangely). need at least 3 (e.g. one svg:desc and 2 svg:path elements)
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if bbox is not None:
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root = self.svg.getElement('//svg:svg');
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offset = self.svg.unittouu(str(self.options.extraborder) + self.options.extraborder_units)
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root.set('viewBox', '%f %f %f %f' % (bbox.left - offset, bbox.top - offset, bbox.width + 2 * offset, bbox.height + 2 * offset))
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root.set('width', bbox.width + 2 * offset)
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root.set('height', bbox.height + 2 * offset)
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else:
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self.msg("Error resizing to bounding box.")
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if __name__ == '__main__':
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PlyCutter().run() |