/
raster2laser_gcode.py
568 lines (437 loc) · 20 KB
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raster2laser_gcode.py
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'''
# ----------------------------------------------------------------------------
# Copyright (C) 2014 305engineering <305engineering@gmail.com>
# Original concept by 305engineering.
#
# "THE MODIFIED BEER-WARE LICENSE" (Revision: my own :P):
# <305engineering@gmail.com> wrote this file. As long as you retain this notice you
# can do whatever you want with this stuff (except sell). If we meet some day,
# and you think this stuff is worth it, you can buy me a beer in return.
#
# The above copyright notice and this permission notice shall be
# included in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
# BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
# ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
# CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
# ----------------------------------------------------------------------------
'''
import sys
import os
import re
sys.path.append('/usr/share/inkscape/extensions')
sys.path.append('/Applications/Inkscape.app/Contents/Resources/extensions')
import subprocess
import math
import inkex
import png
import array
class GcodeExport(inkex.Effect):
######## Richiamata da _main()
def __init__(self):
"""init the effetc library and get options from gui"""
inkex.Effect.__init__(self)
# Opzioni di esportazione dell'immagine
self.OptionParser.add_option("-d", "--directory",action="store", type="string", dest="directory", default="/home/",help="Directory for files") ####check_dir
self.OptionParser.add_option("-f", "--filename", action="store", type="string", dest="filename", default="-1.0", help="File name")
self.OptionParser.add_option("","--add-numeric-suffix-to-filename", action="store", type="inkbool", dest="add_numeric_suffix_to_filename", default=True,help="Add numeric suffix to filename")
self.OptionParser.add_option("","--bg_color",action="store",type="string",dest="bg_color",default="",help="")
self.OptionParser.add_option("","--resolution",action="store", type="int", dest="resolution", default="5",help="") #Usare il valore su float(xy)/resolution e un case per i DPI dell export
# Come convertire in scala di grigi
self.OptionParser.add_option("","--grayscale_type",action="store", type="int", dest="grayscale_type", default="1",help="")
# Modalita di conversione in Bianco e Nero
self.OptionParser.add_option("","--conversion_type",action="store", type="int", dest="conversion_type", default="1",help="")
# Opzioni modalita
self.OptionParser.add_option("","--BW_threshold",action="store", type="int", dest="BW_threshold", default="128",help="")
self.OptionParser.add_option("","--grayscale_resolution",action="store", type="int", dest="grayscale_resolution", default="1",help="")
#Velocita Nero e spostamento
self.OptionParser.add_option("","--speed_ON",action="store", type="int", dest="speed_ON", default="200",help="")
# Mirror Y
self.OptionParser.add_option("","--flip_y",action="store", type="inkbool", dest="flip_y", default=False,help="")
# Homing
self.OptionParser.add_option("","--homing",action="store", type="int", dest="homing", default="1",help="")
# Commands
self.OptionParser.add_option("","--laseron", action="store", type="string", dest="laseron", default="M03", help="")
self.OptionParser.add_option("","--laseroff", action="store", type="string", dest="laseroff", default="M05", help="")
# Anteprima = Solo immagine BN
self.OptionParser.add_option("","--preview_only",action="store", type="inkbool", dest="preview_only", default=False,help="")
#inkex.errormsg("BLA BLA BLA Messaggio da visualizzare") #DEBUG
######## Richiamata da __init__()
######## Qui si svolge tutto
def effect(self):
current_file = self.args[-1]
bg_color = self.options.bg_color
##Implementare check_dir
if (os.path.isdir(self.options.directory)) == True:
##CODICE SE ESISTE LA DIRECTORY
#inkex.errormsg("OK") #DEBUG
#Aggiungo un suffisso al nomefile per non sovrascrivere dei file
if self.options.add_numeric_suffix_to_filename :
dir_list = os.listdir(self.options.directory) #List di tutti i file nella directory di lavoro
temp_name = self.options.filename
max_n = 0
for s in dir_list :
r = re.match(r"^%s_0*(\d+)%s$"%(re.escape(temp_name),'.png' ), s)
if r :
max_n = max(max_n,int(r.group(1)))
self.options.filename = temp_name + "_" + ( "0"*(4-len(str(max_n+1))) + str(max_n+1) )
#genero i percorsi file da usare
suffix = ""
if self.options.conversion_type == 1:
suffix = "_BWfix_"+str(self.options.BW_threshold)+"_"
elif self.options.conversion_type == 2:
suffix = "_BWrnd_"
elif self.options.conversion_type == 3:
suffix = "_H_"
elif self.options.conversion_type == 4:
suffix = "_Hrow_"
elif self.options.conversion_type == 5:
suffix = "_Hcol_"
else:
if self.options.grayscale_resolution == 1:
suffix = "_Gray_256_"
elif self.options.grayscale_resolution == 2:
suffix = "_Gray_128_"
elif self.options.grayscale_resolution == 4:
suffix = "_Gray_64_"
elif self.options.grayscale_resolution == 8:
suffix = "_Gray_32_"
elif self.options.grayscale_resolution == 16:
suffix = "_Gray_16_"
elif self.options.grayscale_resolution == 32:
suffix = "_Gray_8_"
else:
suffix = "_Gray_"
pos_file_png_exported = os.path.join(self.options.directory,self.options.filename+".png")
pos_file_png_BW = os.path.join(self.options.directory,self.options.filename+suffix+"preview.png")
pos_file_gcode = os.path.join(self.options.directory,self.options.filename+suffix+"gcode.txt")
#Esporto l'immagine in PNG
self.exportPage(pos_file_png_exported,current_file,bg_color)
#DA FARE
#Manipolo l'immagine PNG per generare il file Gcode
self.PNGtoGcode(pos_file_png_exported,pos_file_png_BW,pos_file_gcode)
else:
inkex.errormsg("Directory does not exist! Please specify existing directory!")
######## ESPORTA L IMMAGINE IN PNG
######## Richiamata da effect()
def exportPage(self,pos_file_png_exported,current_file,bg_color):
######## CREAZIONE DEL FILE PNG ########
#Crea l'immagine dentro la cartella indicata da "pos_file_png_exported"
# -d 127 = risoluzione 127DPI => 5 pixel/mm 1pixel = 0.2mm
###command="inkscape -C -e \"%s\" -b\"%s\" %s -d 127" % (pos_file_png_exported,bg_color,current_file)
if self.options.resolution == 1:
DPI = 25.4
elif self.options.resolution == 2:
DPI = 50.8
elif self.options.resolution == 5:
DPI = 127
else:
DPI = 254
command="inkscape -C -e \"%s\" -b\"%s\" %s -d %s" % (pos_file_png_exported,bg_color,current_file,DPI) #Comando da linea di comando per esportare in PNG
p = subprocess.Popen(command, shell=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
return_code = p.wait()
f = p.stdout
err = p.stderr
######## CREA IMMAGINE IN B/N E POI GENERA GCODE
######## Richiamata da effect()
def PNGtoGcode(self,pos_file_png_exported,pos_file_png_BW,pos_file_gcode):
######## GENERO IMMAGINE IN SCALA DI GRIGI ########
#Scorro l immagine e la faccio diventare una matrice composta da list
reader = png.Reader(pos_file_png_exported)#File PNG generato
w, h, pixels, metadata = reader.read_flat()
matrice = [[255 for i in range(w)]for j in range(h)] #List al posto di un array
#Scrivo una nuova immagine in Scala di grigio 8bit
#copia pixel per pixel
if self.options.grayscale_type == 1:
#0.21R + 0.71G + 0.07B
for y in range(h): # y varia da 0 a h-1
for x in range(w): # x varia da 0 a w-1
pixel_position = (x + y * w)*4 if metadata['alpha'] else (x + y * w)*3
matrice[y][x] = int(pixels[pixel_position]*0.21 + pixels[(pixel_position+1)]*0.71 + pixels[(pixel_position+2)]*0.07)
elif self.options.grayscale_type == 2:
#(R+G+B)/3
for y in range(h): # y varia da 0 a h-1
for x in range(w): # x varia da 0 a w-1
pixel_position = (x + y * w)*4 if metadata['alpha'] else (x + y * w)*3
matrice[y][x] = int((pixels[pixel_position] + pixels[(pixel_position+1)]+ pixels[(pixel_position+2)]) / 3 )
elif self.options.grayscale_type == 3:
#R
for y in range(h): # y varia da 0 a h-1
for x in range(w): # x varia da 0 a w-1
pixel_position = (x + y * w)*4 if metadata['alpha'] else (x + y * w)*3
matrice[y][x] = int(pixels[pixel_position])
elif self.options.grayscale_type == 4:
#G
for y in range(h): # y varia da 0 a h-1
for x in range(w): # x varia da 0 a w-1
pixel_position = (x + y * w)*4 if metadata['alpha'] else (x + y * w)*3
matrice[y][x] = int(pixels[(pixel_position+1)])
elif self.options.grayscale_type == 5:
#B
for y in range(h): # y varia da 0 a h-1
for x in range(w): # x varia da 0 a w-1
pixel_position = (x + y * w)*4 if metadata['alpha'] else (x + y * w)*3
matrice[y][x] = int(pixels[(pixel_position+2)])
elif self.options.grayscale_type == 6:
#Max Color
for y in range(h): # y varia da 0 a h-1
for x in range(w): # x varia da 0 a w-1
pixel_position = (x + y * w)*4 if metadata['alpha'] else (x + y * w)*3
list_RGB = pixels[pixel_position] , pixels[(pixel_position+1)] , pixels[(pixel_position+2)]
matrice[y][x] = int(max(list_RGB))
else:
#Min Color
for y in range(h): # y varia da 0 a h-1
for x in range(w): # x varia da 0 a w-1
pixel_position = (x + y * w)*4 if metadata['alpha'] else (x + y * w)*3
list_RGB = pixels[pixel_position] , pixels[(pixel_position+1)] , pixels[(pixel_position+2)]
matrice[y][x] = int(min(list_RGB))
####Ora matrice contiene l'immagine in scala di grigi
######## GENERO IMMAGINE IN BIANCO E NERO ########
#Scorro matrice e genero matrice_BN
B=255
N=0
matrice_BN = [[255 for i in range(w)]for j in range(h)]
if self.options.conversion_type == 1:
#B/W fixed threshold
soglia = self.options.BW_threshold
for y in range(h):
for x in range(w):
if matrice[y][x] >= soglia :
matrice_BN[y][x] = B
else:
matrice_BN[y][x] = N
elif self.options.conversion_type == 2:
#B/W random threshold
from random import randint
for y in range(h):
for x in range(w):
soglia = randint(20,235)
if matrice[y][x] >= soglia :
matrice_BN[y][x] = B
else:
matrice_BN[y][x] = N
elif self.options.conversion_type == 3:
#Halftone
Step1 = [[B,B,B,B,B],[B,B,B,B,B],[B,B,N,B,B],[B,B,B,B,B],[B,B,B,B,B]]
Step2 = [[B,B,B,B,B],[B,B,N,B,B],[B,N,N,N,B],[B,B,N,B,B],[B,B,B,B,B]]
Step3 = [[B,B,N,B,B],[B,N,N,N,B],[N,N,N,N,N],[B,N,N,N,B],[B,B,N,B,B]]
Step4 = [[B,N,N,N,B],[N,N,N,N,N],[N,N,N,N,N],[N,N,N,N,N],[B,N,N,N,B]]
for y in range(h/5):
for x in range(w/5):
media = 0
for y2 in range(5):
for x2 in range(5):
media += matrice[y*5+y2][x*5+x2]
media = media /25
for y3 in range(5):
for x3 in range(5):
if media >= 250 and media <= 255:
matrice_BN[y*5+y3][x*5+x3] = B
if media >= 190 and media < 250:
matrice_BN[y*5+y3][x*5+x3] = Step1[y3][x3]
if media >= 130 and media < 190:
matrice_BN[y*5+y3][x*5+x3] = Step2[y3][x3]
if media >= 70 and media < 130:
matrice_BN[y*5+y3][x*5+x3] = Step3[y3][x3]
if media >= 10 and media < 70:
matrice_BN[y*5+y3][x*5+x3] = Step4[y3][x3]
if media >= 0 and media < 10:
matrice_BN[y*5+y3][x*5+x3] = N
elif self.options.conversion_type == 4:
#Halftone row
Step1r = [B,B,N,B,B]
Step2r = [B,N,N,B,B]
Step3r = [B,N,N,N,B]
Step4r = [N,N,N,N,B]
for y in range(h):
for x in range(w/5):
media = 0
for x2 in range(5):
media += matrice[y][x*5+x2]
media = media /5
for x3 in range(5):
if media >= 250 and media <= 255:
matrice_BN[y][x*5+x3] = B
if media >= 190 and media < 250:
matrice_BN[y][x*5+x3] = Step1r[x3]
if media >= 130 and media < 190:
matrice_BN[y][x*5+x3] = Step2r[x3]
if media >= 70 and media < 130:
matrice_BN[y][x*5+x3] = Step3r[x3]
if media >= 10 and media < 70:
matrice_BN[y][x*5+x3] = Step4r[x3]
if media >= 0 and media < 10:
matrice_BN[y][x*5+x3] = N
elif self.options.conversion_type == 5:
#Halftone column
Step1c = [B,B,N,B,B]
Step2c = [B,N,N,B,B]
Step3c = [B,N,N,N,B]
Step4c = [N,N,N,N,B]
for y in range(h/5):
for x in range(w):
media = 0
for y2 in range(5):
media += matrice[y*5+y2][x]
media = media /5
for y3 in range(5):
if media >= 250 and media <= 255:
matrice_BN[y*5+y3][x] = B
if media >= 190 and media < 250:
matrice_BN[y*5+y3][x] = Step1c[y3]
if media >= 130 and media < 190:
matrice_BN[y*5+y3][x] = Step2c[y3]
if media >= 70 and media < 130:
matrice_BN[y*5+y3][x] = Step3c[y3]
if media >= 10 and media < 70:
matrice_BN[y*5+y3][x] = Step4c[y3]
if media >= 0 and media < 10:
matrice_BN[y*5+y3][x] = N
else:
#Grayscale
if self.options.grayscale_resolution == 1:
matrice_BN = matrice
else:
for y in range(h):
for x in range(w):
if matrice[y][x] <= 1:
matrice_BN[y][x] = 0
if matrice[y][x] >= 254:
matrice_BN[y][x] = 255
if matrice[y][x] > 1 and matrice[y][x] <254:
matrice_BN[y][x] = ( matrice[y][x] // self.options.grayscale_resolution ) * self.options.grayscale_resolution
####Ora matrice_BN contiene l'immagine in Bianco (255) e Nero (0)
#### SALVO IMMAGINE IN BIANCO E NERO ####
file_img_BN = open(pos_file_png_BW, 'wb') #Creo il file
Costruttore_img = png.Writer(w, h, greyscale=True, bitdepth=8) #Impostazione del file immagine
Costruttore_img.write(file_img_BN, matrice_BN) #Costruttore del file immagine
file_img_BN.close() #Chiudo il file
#### GENERO IL FILE GCODE ####
if self.options.preview_only == False: #Genero Gcode solo se devo
if self.options.flip_y == False: #Inverto asse Y solo se flip_y = False
#-> coordinate Cartesiane (False) Coordinate "informatiche" (True)
matrice_BN.reverse()
Laser_ON = False
F_G01 = self.options.speed_ON
Scala = self.options.resolution
file_gcode = open(pos_file_gcode, 'w') #Creo il file
#Configurazioni iniziali standard Gcode
file_gcode.write('; Generated with:\n; "Raster 2 Laser Gcode generator"\n; by 305 Engineering\n;\n;\n;\n')
#HOMING
if self.options.homing == 1:
file_gcode.write('G28; home all axes\n')
elif self.options.homing == 2:
file_gcode.write('$H; home all axes\n')
else:
pass
file_gcode.write('G21; Set units to millimeters\n')
file_gcode.write('G90; Use absolute coordinates\n')
file_gcode.write('G92; Coordinate Offset\n')
#Creazione del Gcode
#allargo la matrice per lavorare su tutta l'immagine
for y in range(h):
matrice_BN[y].append(B)
w = w+1
if self.options.conversion_type != 6:
for y in range(h):
if y % 2 == 0 :
for x in range(w):
if matrice_BN[y][x] == N :
if Laser_ON == False :
#file_gcode.write('G00 X' + str(float(x)/Scala) + ' Y' + str(float(y)/Scala) + ' F' + str(F_G00) + '\n')
file_gcode.write('G00 X' + str(float(x)/Scala) + ' Y' + str(float(y)/Scala) + '\n') #tolto il Feed sul G00
file_gcode.write(self.options.laseron + '\n')
Laser_ON = True
if Laser_ON == True : #DEVO evitare di uscire dalla matrice
if x == w-1 :
file_gcode.write('G01 X' + str(float(x)/Scala) + ' Y' + str(float(y)/Scala) +' F' + str(F_G01) + '\n')
file_gcode.write(self.options.laseroff + '\n')
Laser_ON = False
else:
if matrice_BN[y][x+1] != N :
file_gcode.write('G01 X' + str(float(x)/Scala) + ' Y' + str(float(y)/Scala) + ' F' + str(F_G01) +'\n')
file_gcode.write(self.options.laseroff + '\n')
Laser_ON = False
else:
for x in reversed(range(w)):
if matrice_BN[y][x] == N :
if Laser_ON == False :
#file_gcode.write('G00 X' + str(float(x)/Scala) + ' Y' + str(float(y)/Scala) + ' F' + str(F_G00) + '\n')
file_gcode.write('G00 X' + str(float(x)/Scala) + ' Y' + str(float(y)/Scala) + '\n') #tolto il Feed sul G00
file_gcode.write(self.options.laseron + '\n')
Laser_ON = True
if Laser_ON == True : #DEVO evitare di uscire dalla matrice
if x == 0 :
file_gcode.write('G01 X' + str(float(x)/Scala) + ' Y' + str(float(y)/Scala) +' F' + str(F_G01) + '\n')
file_gcode.write(self.options.laseroff + '\n')
Laser_ON = False
else:
if matrice_BN[y][x-1] != N :
file_gcode.write('G01 X' + str(float(x)/Scala) + ' Y' + str(float(y)/Scala) + ' F' + str(F_G01) +'\n')
file_gcode.write(self.options.laseroff + '\n')
Laser_ON = False
else: ##SCALA DI GRIGI
for y in range(h):
if y % 2 == 0 :
for x in range(w):
if matrice_BN[y][x] != B :
if Laser_ON == False :
file_gcode.write('G00 X' + str(float(x)/Scala) + ' Y' + str(float(y)/Scala) +'\n')
file_gcode.write(self.options.laseron + ' '+ ' S' + str(255 - matrice_BN[y][x]) +'\n')
Laser_ON = True
if Laser_ON == True : #DEVO evitare di uscire dalla matrice
if x == w-1 : #controllo fine riga
file_gcode.write('G01 X' + str(float(x)/Scala) + ' Y' + str(float(y)/Scala) +' F' + str(F_G01) + '\n')
file_gcode.write(self.options.laseroff + '\n')
Laser_ON = False
else:
if matrice_BN[y][x+1] == B :
file_gcode.write('G01 X' + str(float(x+1)/Scala) + ' Y' + str(float(y)/Scala) + ' F' + str(F_G01) +'\n')
file_gcode.write(self.options.laseroff + '\n')
Laser_ON = False
elif matrice_BN[y][x] != matrice_BN[y][x+1] :
file_gcode.write('G01 X' + str(float(x+1)/Scala) + ' Y' + str(float(y)/Scala) + ' F' + str(F_G01) +'\n')
file_gcode.write(self.options.laseron + ' '+ ' S' + str(255 - matrice_BN[y][x+1]) +'\n')
else:
for x in reversed(range(w)):
if matrice_BN[y][x] != B :
if Laser_ON == False :
file_gcode.write('G00 X' + str(float(x+1)/Scala) + ' Y' + str(float(y)/Scala) +'\n')
file_gcode.write(self.options.laseron + ' '+ ' S' + str(255 - matrice_BN[y][x]) +'\n')
Laser_ON = True
if Laser_ON == True : #DEVO evitare di uscire dalla matrice
if x == 0 : #controllo fine riga ritorno
file_gcode.write('G01 X' + str(float(x)/Scala) + ' Y' + str(float(y)/Scala) +' F' + str(F_G01) + '\n')
file_gcode.write(self.options.laseroff + '\n')
Laser_ON = False
else:
if matrice_BN[y][x-1] == B :
file_gcode.write('G01 X' + str(float(x)/Scala) + ' Y' + str(float(y)/Scala) + ' F' + str(F_G01) +'\n')
file_gcode.write(self.options.laseroff + '\n')
Laser_ON = False
elif matrice_BN[y][x] != matrice_BN[y][x-1] :
file_gcode.write('G01 X' + str(float(x)/Scala) + ' Y' + str(float(y)/Scala) + ' F' + str(F_G01) +'\n')
file_gcode.write(self.options.laseron + ' '+ ' S' + str(255 - matrice_BN[y][x-1]) +'\n')
#Configurazioni finali standard Gcode
file_gcode.write('G00 X0 Y0; home\n')
#HOMING
if self.options.homing == 1:
file_gcode.write('G28; home all axes\n')
elif self.options.homing == 2:
file_gcode.write('$H; home all axes\n')
else:
pass
file_gcode.close() #Chiudo il file
######## ######## ######## ######## ######## ######## ######## ######## ########
def _main():
e=GcodeExport()
e.affect()
exit()
if __name__=="__main__":
_main()