108 lines
4.2 KiB
Python
Executable File
108 lines
4.2 KiB
Python
Executable File
#!/usr/bin/python
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from __future__ import absolute_import
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from __future__ import print_function
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import sys
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import os
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import xml.etree.ElementTree as ET
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import shapes as shapes_pkg
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from shapes import point_generator
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from config import *
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debug = True
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example_usage = "-i test_data/Test_H.svg -o test_data/test.gcode -fr 300 -mr 1200 -p 1 -lp 20%"
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svg_shapes = set(['rect', 'circle', 'ellipse', 'line', 'polyline', 'polygon', 'path'])
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global conf
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def gcode_write(gcode_file, gcode):
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if (debug):
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for cmd in gcode.split("\n"):
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if len(cmd):
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print("[GCODE] " + str(cmd))
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gcode_file.write(gcode)
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def close_on_failure():
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os.remove(gcode_file_path)
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sys.exit(1)
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def laserpower_to_pwm(percent):
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if (percent <= 1):
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return int(percent*255)
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else:
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return 0
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def read_input_file(svg_file_path):
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try:
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tree = ET.parse(svg_file_path)
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return tree.getroot()
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except Exception as e:
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print("unable to read svg file: \n" + str(e))
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sys.exit(1)
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def generate_gcode(svg_file_root_tree, gcode_file):
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generated_points_count = 0
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width = svg_file_root_tree.get('width')
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height = svg_file_root_tree.get('height')
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if width == None or height == None:
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viewbox = svg_file_root_tree.get('viewBox')
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if viewbox:
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if (debug): print("Using viewbox size")
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_, _, width, height = viewbox.split()
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if width == None or height == None:
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print("Unable to get width and height for the svg")
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close_on_failure()
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width = float(width.split("mm")[0])
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height = float(height.split("mm")[0])
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print("[SVG loaded] With:" + str(width) + "mm Height:" + str(height) + "mm")
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#generate start cmds's
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gcode_write(gcode_file, conf.preamble)
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for elem in svg_file_root_tree.iter():
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try:
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_, tag_suffix = elem.tag.split('}')
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except ValueError:
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continue
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if tag_suffix in svg_shapes:
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shape_class = getattr(shapes_pkg, tag_suffix)
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shape_obj = shape_class(elem)
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obj_path = shape_obj.d_path()
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obj_trans_matrix = shape_obj.transformation_matrix()
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gcode_write(gcode_file, "G0 F" + str(conf.moverate) + " set the moverate to " + str(conf.moverate) + "mm/min;\n")
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if obj_path:
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gcode_write(gcode_file, "; == Start of " + tag_suffix + " ==\n")
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points = point_generator(obj_path, obj_trans_matrix, conf.smoothness)
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num_points = 0
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for x,y in points:
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if (debug): print("[Point] X: " + str(x) + " Y: " + str(y))
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if x > 0 and x < conf.bedsizex and y > 0 and y < conf.bedsizey:
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gcode_write(gcode_file, "G1 X%0.001f Y%0.001f\n" % (x, y))
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num_points += 1
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if (num_points == 1):
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gcode_write(gcode_file, "G0 F" + str(conf.feedrate) + " set the feedrate to " + str(conf.feedrate) + "mm/min;\n")
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gcode_write(gcode_file, "M3 I S" + str(laserpower_to_pwm(conf.laserpower)) + " ;start laser\n")
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elif (debug):
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print("\n; Coordinates out of range:", "G1 X%0.01f Y%0.01f" % (x, y))
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print("; Raw:", str(x), str(y), "\nScaled:", str(x), str(y), "\n")
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close_on_failure()
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gcode_write(gcode_file, "M5 ;stop laser\n")
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gcode_write(gcode_file, "; == End of " + tag_suffix + " ==\n")
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generated_points_count += num_points
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gcode_write(gcode_file, "G0 F" + str(conf.moverate) + " set the moverate to " + str(conf.moverate) + "mm/min;\n")
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gcode_write(gcode_file, conf.postamble)
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print("\nGenerated", generated_points_count, "points")
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if __name__ == "__main__":
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sys.setrecursionlimit(20000) #needed for svg's with more indepented paths
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conf = Config()
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conf.parse_arguments()
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try:
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with open(conf.gcode_file_path, 'w') as gcode_file:
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generate_gcode(read_input_file(conf.svg_file_path),gcode_file)
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except Exception as e:
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print("unable to create gcode file: \n" + str(e))
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close_on_failure()
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