--- a/printrun-src/printrun/laser.py Fri Jun 03 21:14:09 2016 +0200
+++ b/printrun-src/printrun/laser.py Sat Jun 04 09:22:51 2016 +0200
@@ -33,6 +33,31 @@
# 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
@@ -47,18 +72,22 @@
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):
@@ -103,27 +132,7 @@
pix = im.load()
fo = open(filename + ".g", "w")
- fo.write("""
-; 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("; Filename: %s\n%s" % (filename, GCODE_HEAD))
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) )
@@ -184,12 +193,7 @@
if CHANGE_DIRECTION:
DIR = DIR * (-1) # change y direction on every X
- fo.write("""M400 ; Wait for all moves to finish
-M571 S0 E0
-M42 P28 S0 ; Force laser off!
-M501 ; undo all settings made
-""")
-
+ fo.write(GCODE_FOOT)
fo.close()
if self.pronterwindow:
@@ -205,26 +209,7 @@
fi = open(filename, "r")
fo = open(filename + ".g", "w")
-
-
- 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) )
+ fo.write("; Filename: %s\n%s" % (filename, GCODE_HEAD))
G = "0"
LASER_STATE = 0
@@ -267,13 +252,7 @@
print "UNKNOWN: %s" % action
last_cmd = cmd
-
- fo.write("""M400 ; Wait for all moves to finish
-M571 S0 E0
-M42 P28 S0 ; Force laser off!
-M501 ; undo all settings made
-""")
-
+ fo.write(GCODE_FOOT)
fi.close()
fo.close()
@@ -285,37 +264,9 @@
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
@@ -348,7 +299,7 @@
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:
@@ -393,8 +344,8 @@
self.log("Position outside print dimension: %d, %d" % (xs, ys))
fo.write(shape_postamble)
- fo.write(postamble)
- fo.close()
+ fo.write(GCODE_FOOT)
+ fo.close()
if self.pronterwindow:
self.log("") 