print gcode in file
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38
config.py
38
config.py
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@ -1,45 +1,23 @@
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"""Bed width in mm"""
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bed_max_x = 376
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"""Z position when tool is touching surface in mm"""
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z_touching = 0.0
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"""Z position where tool should travel in mm"""
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z_travel = 0.0
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"""Distance between pen and Y=0.0 in mm"""
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y_offset = 0.0
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"""Distance between pen and X=0.0 in mm"""
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x_offset = 0.0
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"""Print bed width in mm"""
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bed_max_x = 300
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"""Print bed height in mm"""
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bed_max_y = 300
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"""Bed height in mm"""
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bed_max_y = 315
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"""X/Y speed in mm/minute"""
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xy_speed = 700
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"""Wait time between phases in milliseconds"""
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wait_time = 1000
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xy_speed = 50
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"""G-code emitted at the start of processing the SVG file"""
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preamble = "G90 ;Absolute programming\nG21 ;Programming in millimeters (mm)\nM5 ;Disable laser"
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preamble = "G90 ;Absolute programming\nG21 ;Programming in millimeters (mm)\nM5 ;Disable laser\n"
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"""G-code emitted at the end of processing the SVG file"""
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postamble = "G1 X0.0 Y0.0; Display printbed\nM02 ;End of program"
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"""G-code emitted before processing a SVG shape"""
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shape_preamble = "; ------\n; Draw shapes"
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"""G-code emitted after processing a SVG shape"""
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shape_postamble = "; ------\n; Shape completed"
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postamble = "G1 X0.0 Y0.0; Display printbed\nM02 ;End of program\n"
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"""
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Used to control the smoothness/sharpness of the curves.
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Smaller the value greater the sharpness. Make sure the
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value is greater than 0.1
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"""
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smoothness = 0.5
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smoothness = 0.2
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73
svg2gcode.py
73
svg2gcode.py
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@ -10,11 +10,27 @@ 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"
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svg_shapes = set(['rect', 'circle', 'ellipse', 'line', 'polyline', 'polygon', 'path'])
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gcode_file_path = " "
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def gcode_write(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 print_help():
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print("Usage:")
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print(os.path.basename(__file__) + " -i <svg file> -o <gcode file>")
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print("Example:")
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print(os.path.basename(__file__) + " " + example_usage)
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sys.exit(1)
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def parse_arguments(argv):
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@ -37,47 +53,30 @@ def read_input_file(svg_file_path):
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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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svg_shapes = set(['rect', 'circle', 'ellipse', 'line', 'polyline', 'polygon', 'path'])
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def generate_gcode(svg_file_root_tree, gcode_file):
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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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sys.exit(1)
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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: With:" + str(width) + " Height:" + str(height))
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# Must keep the ratio of the svg, so offset will be largest between x/y
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offset = max(x_offset, y_offset)
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corrected_bed_max_x = bed_max_x - offset
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corrected_bed_max_y = bed_max_y - offset
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scale_x = 1 #corrected_bed_max_x / max(width, height)
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scale_y = 1 #corrected_bed_max_y / max(width, height)
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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(preamble)
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print(preamble)
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# Iterator to lower printhead at first point
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num_points = 0
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gcode_file.write("Line01")
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gcode_file.write("Line02")
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sys.exit()
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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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@ -85,39 +84,37 @@ def generate_gcode(svg_file_root_tree, gcode_file):
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m = shape_obj.transformation_matrix()
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if d:
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print(shape_preamble)
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#gcode_file.write(shape_preamble)
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p = point_generator(d, m, smoothness)
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for x,y in p:
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print(";X: " + str(x) + " Y: " + str(y))
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#print(";X: " + str(x) + " Y: " + str(y))
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if x > 0 and x < bed_max_x and y > 0 and y < bed_max_y:
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print("G1 X%0.01f Y%0.01f" % ((scale_x*x)+x_offset, (scale_y*y)+y_offset))
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gcode_file.write("G1 X%0.01f Y%0.01f\n" % (x, y))
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num_points += 1
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if num_points == 1:
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print("M3 I S150 ;start laser")
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gcode_file.write("M3 I S150 ;start laser\n")
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else:
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print("\n; Coordinates out of range:", "G1 X%0.01f Y%0.01f" % ((scale_x*x)+x_offset, (scale_y*y)+y_offset))
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print("; Raw:", str(x), str(y), "\nScaled:", str(scale_x*x), str(scale_y*y), "\nScale Factors:", scale_x, scale_y, "\n")
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print("exit")
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sys.exit(-1)
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print("M5 ;stop laser")
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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_file.write("M5 ;stop laser\n")
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num_points = 0
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print(shape_postamble)
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#gcode_file.write(shape_postamble)
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print(postamble)
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print("; Generated", num_points, "points")
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gcode_file.write(postamble)
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print("\nGenerated", num_points, "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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if(len(sys.argv) != (len(example_usage.split())+1)):
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print_help()
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svg_file_path, gcode_file_path = parse_arguments(sys.argv[1:])
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print("SVG: " + svg_file_path + " Gcode: " + gcode_file_path)
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try:
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with open(gcode_file_path, 'w') as gcode_file:
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generate_gcode(read_input_file(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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sys.exit(1)
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close_on_failure()
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@ -1 +1,13 @@
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Line01Line02
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G90 ;Absolute programming
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G21 ;Programming in millimeters (mm)
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M5 ;Disable laser
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G1 X0.1 Y0.1
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M3 I S150 ;start laser
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G1 X0.1 Y0.1
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G1 X9.9 Y0.1
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G1 X9.9 Y9.9
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G1 X0.1 Y9.9
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G1 X0.1 Y0.1
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M5 ;stop laser
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G1 X0.0 Y0.0; Display printbed
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M02 ;End of program
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