lasercut-scripts: comparison printrun-src/printrun/laser.py

-:234037fbca4b
+:03b34402d405
 STEPS_PIXEL = MM_PIXEL * 80 # mine is 80 steps/mm on XY
 # FOR HPGL:
 SCALE_FACTOR = 1.0 / 40.0 # 40 plotter units
+# GENERAL HEADER AND FOOTER GCODE
+GCODE_HEAD = """
+; GCode generated by laser.py pronterface library (marlin code flavour)
+; 2015/2016 by NeoSoft - Malte Bayer
+G21 ; Metric
+; We assume Z is in focus height and laser head is focus at bottom left of image!
+G92 X0 Y0 E0; set zero position - new origin
+G90 ; absolute positioning
+M82 ; Set extruder (laser) to absolute positioning
+M201 X1000 Y1000 E1000 ; Set acceleration
+M203 X1000 Y1000 Z4 E1000 ; Set max feedrate
+M209 S0 ; disable firmware retraction, we dont want to burn holes...
+M302 ; Allow cold extrudes - doesnt matter because we hack the extruder physically off with the M571 E mod
+M571 S1 E1 ; Activate Laser output on extrusion, but block real motor movement!
+G0 X0 Y0 F%d ; Set moving speed TRAVEL_SPEED
+G1 X0 Y0 F%d ; Set linear engraving speed ENGRAVE_SPEED
+""" % (TRAVEL_SPEED, ENGRAVE_SPEED)
+GCODE_FOOT = """M400 ; Wait for all moves to finish
+M571 S0 E0
+M42 P28 S0 ; Force laser off!
+M501 ; undo all settings made
+"""
 from PIL import Image
 import sys
 # Imports for SVG
 class Lasercutter:
 """
 Lasercutter methods
-parameters: log = logger function (accepts a string)
+parameters: log = logger function (fuction has to accept a string)
 """
 def __init__(self, pronterwindow = None):
 if pronterwindow:
 self.pronterwindow = pronterwindow
 self.log = pronterwindow.log
+self.pronterwindow.clear_log(None)
 else:
 self.pronterwindow = None
 self.log = lambda : None
-self.log("\nLasercutter library initialized resolution: %f mm per pixel" % MM_PIXEL)
+self.log("Lasercutter library initialized\n%d DPI (%f mm/pixel)" % (DPI, MM_PIXEL))
 if STEPS_PIXEL <= 5:
 self.log("WARNING: STEPS PER PIXEL NEEDS TO BE > 5 (otherwise marlin joins lines): %f" % STEPS_PIXEL)
+self.log("Travel/Engrave speed: %d mm/sec, %d mm/sec" % (
+TRAVEL_SPEED / 60, ENGRAVE_SPEED / 60) )
+self.log("")
 def pixel2bit(self, pixel, threshold=128):
 """Convert the pixel value to a bit."""
 # some really weird stuff here ;-P
 self.log("size: %d x %d pixels" % im.size)
 pix = im.load()
 fo = open(filename + ".g", "w")
-fo.write("""
+fo.write("; Filename: %s\n%s" % (filename, GCODE_HEAD))
-; Filename: %s
-; GCode generated by bitplotter one-night-quick-hack script (marlin code flavour)
-; 2015/2016 by NeoSoft - Malte Bayer
-G21 ; Metric
-; We assume Z is in focus height and laser head is focus at bottom left of image!
-G92 X0 Y0 E0; set zero position - new origin
-G90 ; absolute positioning
-M82 ; Set extruder (laser) to absolute positioning
-M201 X1000 Y1000 E500 ; Set acceleration
-M203 X1000 Y1000 Z4 E10 ; Set max feedrate
-M209 S0 ; disable firmware retraction, we dont want to burn holes...
-M302 ; Allow cold extrudes - doesnt matter because we hack the extruder physically off with the M571 E mod
-M571 S1 E1 ; Activate Laser output on extrusion, but block real motor movement!
-G0 X0 Y0 F%d ; Set moving speed TRAVEL_SPEED
-G1 X0 Y0 F%d ; Set linear engraving speed ENGRAVE_SPEED
-""" % (filename, TRAVEL_SPEED, ENGRAVE_SPEED) )
-self.log("Travel/Engrave speed: %d mm/sec, %d mm/sec" % (
-TRAVEL_SPEED / 60, ENGRAVE_SPEED / 60) )
 fo.write(";Start engraving the raster image: %dx%d points @ %d DPI = %.0fx%.0f mm\n\n" % (
 im.size[0], im.size[1], DPI, im.size[0]*MM_PIXEL, im.size[1]*MM_PIXEL) )
 INVERT_Y = MM_PIXEL * (im.size[1] -1) * (-1)
 fo.write("G1 X%.4f Y%.4f E%.4f\n" % (XMM, YMM, E * E_FACTOR))
 last_bit = bit
 if CHANGE_DIRECTION:
 DIR = DIR * (-1) # change y direction on every X
-fo.write("""M400 ; Wait for all moves to finish
+fo.write(GCODE_FOOT)
-M571 S0 E0
-M42 P28 S0 ; Force laser off!
-M501 ; undo all settings made
-""")
 fo.close()
 if self.pronterwindow:
 self.log("")
 self.pronterwindow.load_gcode_async(filename + '.g')
 self.log("Converting HPGL plot for lasercut:")
 self.log("File: %s" % filename)
 fi = open(filename, "r")
 fo = open(filename + ".g", "w")
+fo.write("; Filename: %s\n%s" % (filename, GCODE_HEAD))
-fo.write("""
-; Filename: %s
-; GCode generated by hpglplotter (marlin code flavour)
-G21 ; Metric
-; We assume Z is in focus height and laser head is focus at bottom left of image!
-G92 X0 Y0 E0; set zero position - new origin
-G90 ; absolute positioning
-M82 ; Set extruder (laser) to absolute positioning
-M201 X1000 Y1000 E500 ; Set acceleration
-M203 X1000 Y1000 Z4 E10 ; Set max feedrate
-M209 S0 ; disable firmware retraction, we dont want to burn holes...
-M302 ; Allow cold extrudes - doesnt matter because we hack the extruder physically off with the M571 E mod
-M571 S1 E1 ; Activate Laser output on extrusion, but block real motor movement!
-G0 X0 Y0 F%d ; Set moving speed TRAVEL_SPEED
-G1 X0 Y0 F%d ; Set linear engraving speed ENGRAVE_SPEED
-""" % (filename, TRAVEL_SPEED, ENGRAVE_SPEED) )
 G = "0"
 LASER_STATE = 0
 last_coord = [0.0,0.0]
 last_cmd = ""
 print "Ignoring pen thickness"
 else:
 print "UNKNOWN: %s" % action
 last_cmd = cmd
+fo.write(GCODE_FOOT)
-fo.write("""M400 ; Wait for all moves to finish
-M571 S0 E0
-M42 P28 S0 ; Force laser off!
-M501 ; undo all settings made
-""")
 fi.close()
 fo.close()
 if self.pronterwindow:
 self.log("")
 def svg2gcode(self, filename, bed_max_x = 50, bed_max_y = 50, smoothness = 0.2):
 self.log("Generating paths from SVG...")
-preamble = """
-; Filename: %s
-; GCode generated by bitplotter one-night-quick-hack script (marlin code flavour)
-; 2015/2016 by NeoSoft - Malte Bayer
-G21 ; Metric
-; We assume Z is in focus height and laser head is focus at bottom left of image!
-G92 X0 Y0 E0; set zero position - new origin
-G90 ; absolute positioning
-M82 ; Set extruder (laser) to absolute positioning
-M201 X1000 Y1000 E500 ; Set acceleration
-M203 X1000 Y1000 Z4 E10 ; Set max feedrate
-M209 S0 ; disable firmware retraction, we dont want to burn holes...
-M302 ; Allow cold extrudes - doesnt matter because we hack the extruder physically off with the M571 E mod
-M571 S1 E1 ; Activate Laser output on extrusion, but block real motor movement!
-G0 X0 Y0 F%d ; Set moving speed TRAVEL_SPEED
-G1 X0 Y0 F%d ; Set linear engraving speed ENGRAVE_SPEED
-""" % (filename, TRAVEL_SPEED, ENGRAVE_SPEED)
-self.log("Travel/Engrave speed: %d mm/sec, %d mm/sec" % (
-TRAVEL_SPEED / 60, ENGRAVE_SPEED / 60) )
-postamble = """M400 ; Wait for all moves to finish
-M571 S0 E0
-M42 P28 S0 ; Force laser off!
-M501 ; undo all settings made
-"""
 shape_preamble = "G92 E0\n"
 shape_postamble = ""
 """
 Used to control the smoothness/sharpness of the curves.
 Smaller the value greater the sharpness. Make sure the
 value is greater than 0.1
 scale_y = bed_max_y / max(width, height)
 self.log("Scaling factor: %.2f, %.2f" % (scale_x,scale_y))
 fo = open(filename + ".g", "w")
-fo.write(preamble)
+fo.write("; Filename: %s\n%s" % (filename, GCODE_HEAD))
 for elem in root.iter():
 try:
 _, tag_suffix = elem.tag.split('}')
 except ValueError:
 fo.write("G1 X%0.2f Y%0.2f E%.4f F%.4f\n" % (xs, ys, E * E_FACTOR, ENGRAVE_SPEED))
 else:
 self.log("Position outside print dimension: %d, %d" % (xs, ys))
 fo.write(shape_postamble)
-fo.write(postamble)
+fo.write(GCODE_FOOT)
 fo.close()
 if self.pronterwindow:
 self.log("")
 self.pronterwindow.load_gcode_async(filename + '.g')

Mercurial > hg-public > lasercut-scripts / file comparison

comparison: printrun-src/printrun/laser.py

printrun-src/printrun/laser.py