Convert vector images (SVG) to gcode for usage with a laser plotter.
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import tkinter as tk
import argparse
gcode_file_path = " "
bedsizex = 0
bedsizey = 0
scale_factor = 1.0
x_offset = 48.0
y_offset = 48.0
laser_on = False
last_position = {"x": 0.0, "y": 0.0}
global canvas
debug = True
def parse_arguments():
global gcode_file_path
global bedsizex
global bedsizey
parser = argparse.ArgumentParser(description='Simulate gcode for laser plotter.')
parser.add_argument("-i", "--input", dest='inputfile', metavar='data.gcode', help="path to gcode file", required=True)
parser.add_argument("-bx", "--bedsizex", dest='bedsizex', default="376", help="x size of bed in mm", required=False)
parser.add_argument("-by", "--bedsizey", dest='bedsizey', default="315", help="y size of bed in mm", required=False)
args = parser.parse_args()
gcode_file_path = args.inputfile
bedsizex = int(args.bedsizex)
bedsizey = int(args.bedsizey)
def plot_paths(canvas):
gcode_file = open(gcode_file_path, "r")
for line in gcode_file.readlines():
if(not line.startswith(';')): #filter comments
if(debug): print("[decoder] laser off")
laser_on = False
if(debug): print("[decoder] laser on")
laser_on = True
x = float(line[(int(line.find('X'))+1):(int(line.find('Y')-1))]) * (scale_factor*1) + x_offset
y = (bedsizey * scale_factor-y_offset) - (float(line[(int(line.find('Y'))+1):(int(line.find(';')-1))])* (scale_factor*1))
if(debug): print("[decoder] movement to " + str(x) + " " + str(y))
if(laser_on == True):
canvas.create_line(last_position["x"], last_position["y"], x, y, width=5, fill='red')
canvas.create_line(last_position["x"], last_position["y"], x, y, width=3, fill='green')
last_position["x"] = x
last_position["y"] = y
class Example(tk.Frame):
def __init__(self, root):
tk.Frame.__init__(self, root)
self.canvas = tk.Canvas(self, width=400, height=400, background="bisque")
self.xsb = tk.Scrollbar(self, orient="horizontal", command=self.canvas.xview)
self.ysb = tk.Scrollbar(self, orient="vertical", command=self.canvas.yview)
self.canvas.configure(yscrollcommand=self.ysb.set, xscrollcommand=self.xsb.set)
self.master.title("gcode simulator")
self.xsb.grid(row=1, column=0, sticky="ew")
self.ysb.grid(row=0, column=1, sticky="ns")
self.canvas.grid(row=0, column=0, sticky="nsew")
self.grid_rowconfigure(0, weight=1)
self.grid_columnconfigure(0, weight=1)
actual_bedsize_x = bedsizex * scale_factor
actual_bedsize_y = bedsizey * scale_factor
self.canvas.create_line(x_offset, y_offset, x_offset, (actual_bedsize_y-y_offset), width=2, fill='black')
self.canvas.create_line(actual_bedsize_x-x_offset, y_offset, actual_bedsize_x-x_offset, (actual_bedsize_y-y_offset), width=2, fill='black')
self.canvas.create_line(x_offset, y_offset, actual_bedsize_x-x_offset, y_offset, width=2, fill='black')
self.canvas.create_line(x_offset, (actual_bedsize_y-y_offset), actual_bedsize_x-x_offset, (actual_bedsize_y-y_offset), width=2, fill='black')
# This is what enables using the mouse:
self.canvas.bind("<ButtonPress-1>", self.move_start)
self.canvas.bind("<B1-Motion>", self.move_move)
#linux scroll
self.canvas.bind("<Button-4>", self.zoomerP)
self.canvas.bind("<Button-5>", self.zoomerM)
#windows scroll
def move_start(self, event):
self.canvas.scan_mark(event.x, event.y)
def move_move(self, event):
self.canvas.scan_dragto(event.x, event.y, gain=1)
#windows zoom
def zoomer(self,event):
if ( > 0):
self.canvas.scale("all", event.x, event.y, 1.1, 1.1)
elif ( < 0):
self.canvas.scale("all", event.x, event.y, 0.9, 0.9)
self.canvas.configure(scrollregion = self.canvas.bbox("all"))
#linux zoom
def zoomerP(self,event):
self.canvas.scale("all", event.x, event.y, 1.1, 1.1)
self.canvas.configure(scrollregion = self.canvas.bbox("all"))
def zoomerM(self,event):
self.canvas.scale("all", event.x, event.y, 0.9, 0.9)
self.canvas.configure(scrollregion = self.canvas.bbox("all"))
if __name__ == "__main__":
if(bedsizex < bedsizey):
scale_factor = float(720/bedsizey)*0.8
scale_factor = float(1280/bedsizex)*0.8
print("scale factor: " + str(scale_factor))
last_position = {"x": x_offset, "y": bedsizey * scale_factor-y_offset} #set to initial start at home pos
root = tk.Tk()
Example(root).pack(fill="both", expand=True)

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