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laser.py
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#!/usr/bin/env python
"""
Modified by Jay Johnson 2015, J Tech Photonics, Inc., jtechphotonics.com
modified by Adam Polak 2014, polakiumengineering.org
based on Copyright (C) 2009 Nick Drobchenko, [email protected]
based on gcode.py (C) 2007 hugomatic...
based on addnodes.py (C) 2005,2007 Aaron Spike, [email protected]
based on dots.py (C) 2005 Aaron Spike, [email protected]
based on interp.py (C) 2005 Aaron Spike, [email protected]
based on bezmisc.py (C) 2005 Aaron Spike, [email protected]
based on cubicsuperpath.py (C) 2005 Aaron Spike, [email protected]
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
"""
import inkex
from inkex.transforms import Transform
from inkex.paths import Path
import os
import math
import re
import sys
import time
import numpy
import gettext
_ = gettext.gettext
# Deprecation hack. Access the formatStyle differently for inkscape >= 1.0
target_version = 1.0
if target_version < 1.0:
# simplestyle
import simplestyle
# etree
etree = inkex.etree
# cubicsuperpath
import cubicsuperpath
parsePath = cubicsuperpath.parsePath
# Inkex.Boolean
inkex.Boolean = bool
import bezmisc as bezier
else:
# simplestyle
# Class and method names follow the old Inkscape API for compatibility's sake.
# When support is dropped for older versions this can be ganged to follow PEP 8.
class simplestyle(object): # noqa
# I think anonymous declarations would have been cleaner. However, Python 2 doesn't like how I use them
@staticmethod
def formatStyle(a): # noqa
return str(inkex.Style(a))
@staticmethod
def parseStyle(s): # noqa
return dict(inkex.Style.parse_str(s))
# etree
from lxml import etree # noqa
# cubicsuperpath
from inkex.paths import CubicSuperPath # noqa
parsePath = CubicSuperPath
from inkex import bezier
# Check if inkex has error messages. (0.46 version does not have one) Could be removed later.
if "errormsg" not in dir(inkex):
inkex.errormsg = lambda msg: sys.stderr.write((str(msg) + "\n").encode("UTF-8"))
def bezierslopeatt(xxx_todo_changeme, t):
((bx0, by0), (bx1, by1), (bx2, by2), (bx3, by3)) = xxx_todo_changeme
ax, ay, bx, by, cx, cy, x0, y0 = bezier.bezierparameterize(((bx0, by0), (bx1, by1), (bx2, by2), (bx3, by3)))
dx = 3 * ax * (t ** 2) + 2 * bx * t + cx
dy = 3 * ay * (t ** 2) + 2 * by * t + cy
if dx == dy == 0:
dx = 6 * ax * t + 2 * bx
dy = 6 * ay * t + 2 * by
if dx == dy == 0:
dx = 6 * ax
dy = 6 * ay
if dx == dy == 0:
print_("Slope error x = %s*t^3+%s*t^2+%s*t+%s, y = %s*t^3+%s*t^2+%s*t+%s, t = %s, dx==dy==0" % (
ax, bx, cx, dx, ay, by, cy, dy, t))
print_(((bx0, by0), (bx1, by1), (bx2, by2), (bx3, by3)))
dx, dy = 1, 1
return dx, dy
bezier.bezierslopeatt = bezierslopeatt
################################################################################
#
# Styles and additional parameters
#
################################################################################
math.pi2 = math.pi * 2
straight_tolerance = 0.0001
straight_distance_tolerance = 0.0001
engraving_tolerance = 0.0001
loft_lengths_tolerance = 0.0000001
options = {}
defaults = {
'header': """
G90
""",
'footer': """G1 X0 Y0
"""
}
intersection_recursion_depth = 10
intersection_tolerance = 0.00001
styles = {
"loft_style": {
'main curve': simplestyle.formatStyle(
{'stroke': '#88f', 'fill': 'none', 'stroke-width': '1', 'marker-end': 'url(#Arrow2Mend)'}),
},
"biarc_style": {
'biarc0': simplestyle.formatStyle(
{'stroke': '#88f', 'fill': 'none', "marker-end": "url(#DrawCurveMarker)", 'stroke-width': '1'}),
'biarc1': simplestyle.formatStyle(
{'stroke': '#8f8', 'fill': 'none', "marker-end": "url(#DrawCurveMarker)", 'stroke-width': '1'}),
'line': simplestyle.formatStyle(
{'stroke': '#f88', 'fill': 'none', "marker-end": "url(#DrawCurveMarker)", 'stroke-width': '1'}),
'area': simplestyle.formatStyle(
{'stroke': '#777', 'fill': 'none', "marker-end": "url(#DrawCurveMarker)", 'stroke-width': '0.1'}),
},
"biarc_style_dark": {
'biarc0': simplestyle.formatStyle(
{'stroke': '#33a', 'fill': 'none', "marker-end": "url(#DrawCurveMarker)", 'stroke-width': '1'}),
'biarc1': simplestyle.formatStyle(
{'stroke': '#3a3', 'fill': 'none', "marker-end": "url(#DrawCurveMarker)", 'stroke-width': '1'}),
'line': simplestyle.formatStyle(
{'stroke': '#a33', 'fill': 'none', "marker-end": "url(#DrawCurveMarker)", 'stroke-width': '1'}),
'area': simplestyle.formatStyle(
{'stroke': '#222', 'fill': 'none', "marker-end": "url(#DrawCurveMarker)", 'stroke-width': '0.3'}),
},
"biarc_style_dark_area": {
'biarc0': simplestyle.formatStyle(
{'stroke': '#33a', 'fill': 'none', "marker-end": "url(#DrawCurveMarker)", 'stroke-width': '0.1'}),
'biarc1': simplestyle.formatStyle(
{'stroke': '#3a3', 'fill': 'none', "marker-end": "url(#DrawCurveMarker)", 'stroke-width': '0.1'}),
'line': simplestyle.formatStyle(
{'stroke': '#a33', 'fill': 'none', "marker-end": "url(#DrawCurveMarker)", 'stroke-width': '0.1'}),
'area': simplestyle.formatStyle(
{'stroke': '#222', 'fill': 'none', "marker-end": "url(#DrawCurveMarker)", 'stroke-width': '0.3'}),
},
"biarc_style_i": {
'biarc0': simplestyle.formatStyle(
{'stroke': '#880', 'fill': 'none', "marker-end": "url(#DrawCurveMarker)", 'stroke-width': '1'}),
'biarc1': simplestyle.formatStyle(
{'stroke': '#808', 'fill': 'none', "marker-end": "url(#DrawCurveMarker)", 'stroke-width': '1'}),
'line': simplestyle.formatStyle(
{'stroke': '#088', 'fill': 'none', "marker-end": "url(#DrawCurveMarker)", 'stroke-width': '1'}),
'area': simplestyle.formatStyle(
{'stroke': '#999', 'fill': 'none', "marker-end": "url(#DrawCurveMarker)", 'stroke-width': '0.3'}),
},
"biarc_style_dark_i": {
'biarc0': simplestyle.formatStyle(
{'stroke': '#dd5', 'fill': 'none', "marker-end": "url(#DrawCurveMarker)", 'stroke-width': '1'}),
'biarc1': simplestyle.formatStyle(
{'stroke': '#d5d', 'fill': 'none', "marker-end": "url(#DrawCurveMarker)", 'stroke-width': '1'}),
'line': simplestyle.formatStyle(
{'stroke': '#5dd', 'fill': 'none', "marker-end": "url(#DrawCurveMarker)", 'stroke-width': '1'}),
'area': simplestyle.formatStyle(
{'stroke': '#aaa', 'fill': 'none', "marker-end": "url(#DrawCurveMarker)", 'stroke-width': '0.3'}),
},
"biarc_style_lathe_feed": {
'biarc0': simplestyle.formatStyle(
{'stroke': '#07f', 'fill': 'none', "marker-end": "url(#DrawCurveMarker)", 'stroke-width': '.4'}),
'biarc1': simplestyle.formatStyle(
{'stroke': '#0f7', 'fill': 'none', "marker-end": "url(#DrawCurveMarker)", 'stroke-width': '.4'}),
'line': simplestyle.formatStyle(
{'stroke': '#f44', 'fill': 'none', "marker-end": "url(#DrawCurveMarker)", 'stroke-width': '.4'}),
'area': simplestyle.formatStyle(
{'stroke': '#aaa', 'fill': 'none', "marker-end": "url(#DrawCurveMarker)", 'stroke-width': '0.3'}),
},
"biarc_style_lathe_passing feed": {
'biarc0': simplestyle.formatStyle(
{'stroke': '#07f', 'fill': 'none', "marker-end": "url(#DrawCurveMarker)", 'stroke-width': '.4'}),
'biarc1': simplestyle.formatStyle(
{'stroke': '#0f7', 'fill': 'none', "marker-end": "url(#DrawCurveMarker)", 'stroke-width': '.4'}),
'line': simplestyle.formatStyle(
{'stroke': '#f44', 'fill': 'none', "marker-end": "url(#DrawCurveMarker)", 'stroke-width': '.4'}),
'area': simplestyle.formatStyle(
{'stroke': '#aaa', 'fill': 'none', "marker-end": "url(#DrawCurveMarker)", 'stroke-width': '0.3'}),
},
"biarc_style_lathe_fine feed": {
'biarc0': simplestyle.formatStyle(
{'stroke': '#7f0', 'fill': 'none', "marker-end": "url(#DrawCurveMarker)", 'stroke-width': '.4'}),
'biarc1': simplestyle.formatStyle(
{'stroke': '#f70', 'fill': 'none', "marker-end": "url(#DrawCurveMarker)", 'stroke-width': '.4'}),
'line': simplestyle.formatStyle(
{'stroke': '#744', 'fill': 'none', "marker-end": "url(#DrawCurveMarker)", 'stroke-width': '.4'}),
'area': simplestyle.formatStyle(
{'stroke': '#aaa', 'fill': 'none', "marker-end": "url(#DrawCurveMarker)", 'stroke-width': '0.3'}),
},
"area artefact": simplestyle.formatStyle({'stroke': '#ff0000', 'fill': '#ffff00', 'stroke-width': '1'}),
"area artefact arrow": simplestyle.formatStyle({'stroke': '#ff0000', 'fill': '#ffff00', 'stroke-width': '1'}),
"dxf_points": simplestyle.formatStyle({"stroke": "#ff0000", "fill": "#ff0000"}),
}
################################################################################
# Cubic Super Path additional functions
################################################################################
def csp_segment_to_bez(sp1, sp2):
return sp1[1:] + sp2[:2]
def csp_split(sp1, sp2, t=.5):
[x1, y1], [x2, y2], [x3, y3], [x4, y4] = sp1[1], sp1[2], sp2[0], sp2[1]
x12 = x1 + (x2 - x1) * t
y12 = y1 + (y2 - y1) * t
x23 = x2 + (x3 - x2) * t
y23 = y2 + (y3 - y2) * t
x34 = x3 + (x4 - x3) * t
y34 = y3 + (y4 - y3) * t
x1223 = x12 + (x23 - x12) * t
y1223 = y12 + (y23 - y12) * t
x2334 = x23 + (x34 - x23) * t
y2334 = y23 + (y34 - y23) * t
x = x1223 + (x2334 - x1223) * t
y = y1223 + (y2334 - y1223) * t
return [sp1[0], sp1[1], [x12, y12]], [[x1223, y1223], [x, y], [x2334, y2334]], [[x34, y34], sp2[1], sp2[2]]
def csp_curvature_at_t(sp1, sp2, t, depth=3):
ax, ay, bx, by, cx, cy, dx, dy = bezier.bezierparameterize(csp_segment_to_bez(sp1, sp2))
# curvature = (x'y''-y'x'') / (x'^2+y'^2)^1.5
f1x = 3 * ax * t ** 2 + 2 * bx * t + cx
f1y = 3 * ay * t ** 2 + 2 * by * t + cy
f2x = 6 * ax * t + 2 * bx
f2y = 6 * ay * t + 2 * by
d = (f1x ** 2 + f1y ** 2) ** 1.5
if d != 0:
return (f1x * f2y - f1y * f2x) / d
else:
t1 = f1x * f2y - f1y * f2x
if t1 > 0: return 1e100
if t1 < 0: return -1e100
# Use the Lapitals rule to solve 0/0 problem for 2 times...
t1 = 2 * (bx * ay - ax * by) * t + (ay * cx - ax * cy)
if t1 > 0: return 1e100
if t1 < 0: return -1e100
t1 = bx * ay - ax * by
if t1 > 0: return 1e100
if t1 < 0: return -1e100
if depth > 0:
# little hack ;^) hope it wont influence anything...
return csp_curvature_at_t(sp1, sp2, t * 1.004, depth - 1)
return 1e100
def csp_at_t(sp1, sp2, t):
ax, bx, cx, dx = sp1[1][0], sp1[2][0], sp2[0][0], sp2[1][0]
ay, by, cy, dy = sp1[1][1], sp1[2][1], sp2[0][1], sp2[1][1]
x1, y1 = ax + (bx - ax) * t, ay + (by - ay) * t
x2, y2 = bx + (cx - bx) * t, by + (cy - by) * t
x3, y3 = cx + (dx - cx) * t, cy + (dy - cy) * t
x4, y4 = x1 + (x2 - x1) * t, y1 + (y2 - y1) * t
x5, y5 = x2 + (x3 - x2) * t, y2 + (y3 - y2) * t
x, y = x4 + (x5 - x4) * t, y4 + (y5 - y4) * t
return [x, y]
def cspseglength(sp1, sp2, tolerance=0.001):
bez = (sp1[1][:], sp1[2][:], sp2[0][:], sp2[1][:])
return bezier.bezierlength(bez, tolerance)
# Distance calculation from point to arc
def point_to_arc_distance(p, arc):
P0, P2, c, a = arc
dist = None
p = P(p)
r = (P0 - c).mag()
if r > 0:
i = c + (p - c).unit() * r
alpha = ((i - c).angle() - (P0 - c).angle())
if a * alpha < 0:
if alpha > 0:
alpha = alpha - math.pi2
else:
alpha = math.pi2 + alpha
if between(alpha, 0, a) or min(abs(alpha), abs(alpha - a)) < straight_tolerance:
return (p - i).mag(), (i.x, i.y)
else:
d1, d2 = (p - P0).mag(), (p - P2).mag()
if d1 < d2:
return (d1, (P0.x, P0.y))
else:
return (d2, (P2.x, P2.y))
def csp_to_arc_distance(sp1, sp2, arc1, arc2, tolerance=0.01): # arc = [start,end,center,alpha]
n, i = 10, 0
d, d1, dl = (0, (0, 0)), (0, (0, 0)), 0
while i < 1 or (abs(d1[0] - dl[0]) > tolerance and i < 4):
i += 1
dl = d1 * 1
for j in range(n + 1):
t = float(j) / n
p = csp_at_t(sp1, sp2, t)
d = min(point_to_arc_distance(p, arc1), point_to_arc_distance(p, arc2))
# inkex.debug("---Debug---")
# inkex.debug(str(d1) + str(d))
# inkex.debug(str(tuple(d1)) + str(tuple(d)))
d1 = max(tuple(d1), tuple(d))
n = n * 2
return d1[0]
################################################################################
# Common functions
################################################################################
def atan2(*arg):
if len(arg) == 1 and (type(arg[0]) == type([0., 0.]) or type(arg[0]) == type((0., 0.))):
return (math.pi / 2 - math.atan2(arg[0][0], arg[0][1])) % math.pi2
elif len(arg) == 2:
return (math.pi / 2 - math.atan2(arg[0], arg[1])) % math.pi2
else:
raise ValueError("Bad argumets for atan! (%s)" % arg)
def between(c, x, y):
return x - straight_tolerance <= c <= y + straight_tolerance or y - straight_tolerance <= c <= x + straight_tolerance
# Print arguments into specified log file
def print_(*arg):
f = open(options.log_filename, "a")
for s in arg:
s = str(str(s).encode('unicode_escape')) + " "
f.write(s)
f.write("\n")
f.close()
################################################################################
# Point (x,y) operations
################################################################################
class P:
def __init__(self, x, y=None):
if not y == None:
self.x, self.y = float(x), float(y)
else:
self.x, self.y = float(x[0]), float(x[1])
def __add__(self, other):
return P(self.x + other.x, self.y + other.y)
def __sub__(self, other):
return P(self.x - other.x, self.y - other.y)
def __neg__(self):
return P(-self.x, -self.y)
def __mul__(self, other):
if isinstance(other, P):
return self.x * other.x + self.y * other.y
return P(self.x * other, self.y * other)
__rmul__ = __mul__
def __div__(self, other):
return P(self.x / other, self.y / other)
# Added to support python 3
__floordiv__ = __div__
__truediv__ = __div__
def mag(self):
return math.hypot(self.x, self.y)
def unit(self):
h = self.mag()
if h:
return self / h
else:
return P(0, 0)
def angle(self):
return math.atan2(self.y, self.x)
def __repr__(self):
return '%f,%f' % (self.x, self.y)
def l2(self):
return self.x * self.x + self.y * self.y
################################################################################
#
# Biarc function
#
# Calculates biarc approximation of cubic super path segment
# splits segment if needed or approximates it with straight line
#
################################################################################
def biarc(sp1, sp2, z1, z2, depth=0):
def biarc_split(sp1, sp2, z1, z2, depth):
if depth < options.biarc_max_split_depth:
sp1, sp2, sp3 = csp_split(sp1, sp2)
l1, l2 = cspseglength(sp1, sp2), cspseglength(sp2, sp3)
if l1 + l2 == 0:
zm = z1
else:
zm = z1 + (z2 - z1) * l1 / (l1 + l2)
return biarc(sp1, sp2, z1, zm, depth + 1) + biarc(sp2, sp3, zm, z2, depth + 1)
else:
return [[sp1[1], 'line', 0, 0, sp2[1], [z1, z2]]]
P0, P4 = P(sp1[1]), P(sp2[1])
TS, TE, v = (P(sp1[2]) - P0), -(P(sp2[0]) - P4), P0 - P4
tsa, tea, va = TS.angle(), TE.angle(), v.angle()
if TE.mag() < straight_distance_tolerance and TS.mag() < straight_distance_tolerance:
# Both tangents are zerro - line straight
return [[sp1[1], 'line', 0, 0, sp2[1], [z1, z2]]]
if TE.mag() < straight_distance_tolerance:
TE = -(TS + v).unit()
r = TS.mag() / v.mag() * 2
elif TS.mag() < straight_distance_tolerance:
TS = -(TE + v).unit()
r = 1 / (TE.mag() / v.mag() * 2)
else:
r = TS.mag() / TE.mag()
TS, TE = TS.unit(), TE.unit()
tang_are_parallel = (
(tsa - tea) % math.pi < straight_tolerance or math.pi - (tsa - tea) % math.pi < straight_tolerance)
if (tang_are_parallel and
((
v.mag() < straight_distance_tolerance or TE.mag() < straight_distance_tolerance or TS.mag() < straight_distance_tolerance) or
1 - abs(TS * v / (TS.mag() * v.mag())) < straight_tolerance)):
# Both tangents are parallel and start and end are the same - line straight
# or one of tangents still smaller then tollerance
# Both tangents and v are parallel - line straight
return [[sp1[1], 'line', 0, 0, sp2[1], [z1, z2]]]
c, b, a = v * v, 2 * v * (r * TS + TE), 2 * r * (TS * TE - 1)
if v.mag() == 0:
return biarc_split(sp1, sp2, z1, z2, depth)
asmall, bsmall, csmall = abs(a) < 10 ** -10, abs(b) < 10 ** -10, abs(c) < 10 ** -10
if asmall and b != 0:
beta = -c / b
elif csmall and a != 0:
beta = -b / a
elif not asmall:
discr = b * b - 4 * a * c
if discr < 0: raise ValueError(a, b, c, discr)
disq = discr ** .5
beta1 = (-b - disq) / 2 / a
beta2 = (-b + disq) / 2 / a
if beta1 * beta2 > 0: raise ValueError(a, b, c, disq, beta1, beta2)
beta = max(beta1, beta2)
elif asmall and bsmall:
return biarc_split(sp1, sp2, z1, z2, depth)
alpha = beta * r
ab = alpha + beta
P1 = P0 + alpha * TS
P3 = P4 - beta * TE
P2 = (beta / ab) * P1 + (alpha / ab) * P3
def calculate_arc_params(P0, P1, P2):
D = (P0 + P2) / 2
if (D - P1).mag() == 0: return None, None
R = D - ((D - P0).mag() ** 2 / (D - P1).mag()) * (P1 - D).unit()
p0a, p1a, p2a = (P0 - R).angle() % (2 * math.pi), (P1 - R).angle() % (2 * math.pi), (P2 - R).angle() % (
2 * math.pi)
alpha = (p2a - p0a) % (2 * math.pi)
if (p0a < p2a and (p1a < p0a or p2a < p1a)) or (p2a < p1a < p0a):
alpha = -2 * math.pi + alpha
if abs(R.x) > 1000000 or abs(R.y) > 1000000 or (R - P0).mag() < .1:
return None, None
else:
return R, alpha
R1, a1 = calculate_arc_params(P0, P1, P2)
R2, a2 = calculate_arc_params(P2, P3, P4)
if R1 == None or R2 == None or (R1 - P0).mag() < straight_tolerance or (
R2 - P2).mag() < straight_tolerance: return [[sp1[1], 'line', 0, 0, sp2[1], [z1, z2]]]
d = csp_to_arc_distance(sp1, sp2, [P0, P2, R1, a1], [P2, P4, R2, a2])
if d > 1 and depth < options.biarc_max_split_depth:
return biarc_split(sp1, sp2, z1, z2, depth)
else:
if R2.mag() * a2 == 0:
zm = z2
else:
zm = z1 + (z2 - z1) * (abs(R1.mag() * a1)) / (abs(R2.mag() * a2) + abs(R1.mag() * a1))
return [[sp1[1], 'arc', [R1.x, R1.y], a1, [P2.x, P2.y], [z1, zm]],
[[P2.x, P2.y], 'arc', [R2.x, R2.y], a2, [P4.x, P4.y], [zm, z2]]]
################################################################################
# Polygon class
################################################################################
class Polygon:
def __init__(self, polygon=None):
self.polygon = [] if polygon == None else polygon[:]
def add(self, add):
if type(add) == type([]):
self.polygon += add[:]
else:
self.polygon += add.polygon[:]
class ArrangementGenetic:
# gene = [fittness, order, rotation, xposition]
# spieces = [gene]*shapes count
# population = [spieces]
def __init__(self, polygons, material_width):
self.population = []
self.genes_count = len(polygons)
self.polygons = polygons
self.width = material_width
self.mutation_factor = 0.1
self.order_mutate_factor = 1.
self.move_mutate_factor = 1.
################################################################################
###
### Gcodetools class
###
################################################################################
class LaserGcode(inkex.Effect):
def export_gcode(self, gcode):
gcode_pass = gcode
for x in range(1, self.options.passes):
gcode += "G91\nG1 Z-" + self.options.pass_depth + "\nG90\n" + gcode_pass
f = open(self.options.directory + self.options.file, "w")
f.write(
self.options.laser_off_command + " S0" + "\n" + self.header +
"G1 F" + self.options.travel_speed + "\n" + gcode + self.footer)
f.close()
def add_arguments_old(self):
add_option = self.OptionParser.add_option
for arg in self.arguments:
# Stringify add_option arguments
action = arg["action"] if "action" in arg else "store"
arg_type = {str: "str", int: "int", bool: "inkbool"}[arg["type"]]
default = arg["type"](arg["default"])
add_option("", arg["name"], action=action, type=arg_type, dest=arg["dest"],
default=default, help=arg["help"])
def add_arguments_new(self):
add_argument = self.arg_parser.add_argument
for arg in self.arguments:
# Not using kwargs unpacking for clarity, flexibility and constancy with add_arguments_old
action = arg["action"] if "action" in arg else "store"
add_argument(arg["name"], action=action, type=arg["type"], dest=arg["dest"],
default=arg["default"], help=arg["help"])
def __init__(self):
inkex.Effect.__init__(self)
# Define command line arguments, inkex will use these to interface with the GUI defined in laser.ini
self.arguments = [
{"name": "--directory", "type": str, "dest": "directory",
"default": "", "help": "Output directory"},
{"name": "--filename", "type": str, "dest": "file",
"default": "output.gcode", "help": "File name"},
{"name": "--add-numeric-suffix-to-filename", "type": inkex.Boolean,
"dest": "add_numeric_suffix_to_filename", "default": False,
"help": "Add numeric suffix to file name"},
{"name": "--laser-command", "type": str, "dest": "laser_command",
"default": "M03", "help": "Laser gcode command"},
{"name": "--laser-off-command", "type": str, "dest": "laser_off_command",
"default": "M05", "help": "Laser gcode end command"},
{"name": "--laser-speed", "type": int, "dest": "laser_speed", "default": 750,
"help": "Laser speed (mm/min},"},
{"name": "--travel-speed", "type": str, "dest": "travel_speed",
"default": "3000", "help": "Travel speed (mm/min},"},
{"name": "--laser-power", "type": int, "dest": "laser_power", "default": 255,
"help": "S# is 256 or 10000 for full power"},
{"name": "--passes", "type": int, "dest": "passes", "default": 1,
"help": "Quantity of passes"},
{"name": "--pass-depth", "type": str, "dest": "pass_depth", "default": 1,
"help": "Depth of laser cut"},
{"name": "--power-delay", "type": str, "dest": "power_delay",
"default": "0", "help": "Laser power-on delay (ms},"},
{"name": "--suppress-all-messages", "type": inkex.Boolean,
"dest": "suppress_all_messages", "default": True,
"help": "Hide messages during g-code generation"},
{"name": "--create-log", "type": bool, "dest": "log_create_log",
"default": False, "help": "Create log files"},
{"name": "--log-filename", "type": str, "dest": "log_filename",
"default": '', "help": "Create log files"},
{"name": "--engraving-draw-calculation-paths", "type": inkex.Boolean,
"dest": "engraving_draw_calculation_paths", "default": False,
"help": "Draw additional graphics to debug engraving path"},
{"name": "--unit", "type": str, "dest": "unit",
"default": "G21 (All units in mm},", "help": "Units either mm or inches"},
{"name": "--active-tab", "type": str, "dest": "active_tab", "default": "",
"help": "Defines which tab is active"},
{"name": "--biarc-max-split-depth", "type": int,
"dest": "biarc_max_split_depth", "default": "4",
"help": "Defines maximum depth of splitting while approximating using biarcs."}
]
if target_version < 1.0:
self.add_arguments_old()
else:
self.add_arguments_new()
# Another hack to maintain support across different Inkscape versions
if target_version < 1.0:
self.selected_hack = self.selected
else:
self.selected_hack = self.svg.selected
def parse_curve(self, p, layer, w=None, f=None):
c = []
if len(p) == 0:
return []
p = self.transform_csp(p, layer)
# Sort to reduce Rapid distance
k = list(range(1, len(p)))
keys = [0]
while len(k) > 0:
end = p[keys[-1]][-1][1]
dist = (float('-inf'), float('-inf'))
for i in range(len(k)):
start = p[k[i]][0][1]
dist = max((-((end[0] - start[0]) ** 2 + (end[1] - start[1]) ** 2), i), dist)
keys += [k[dist[1]]]
del k[dist[1]]
for k in keys:
subpath = p[k]
c += [[[subpath[0][1][0], subpath[0][1][1]], 'move', 0, 0]]
for i in range(1, len(subpath)):
sp1 = [[subpath[i - 1][j][0], subpath[i - 1][j][1]] for j in range(3)]
sp2 = [[subpath[i][j][0], subpath[i][j][1]] for j in range(3)]
c += biarc(sp1, sp2, 0, 0) if w == None else biarc(sp1, sp2, -f(w[k][i - 1]), -f(w[k][i]))
# l1 = biarc(sp1,sp2,0,0) if w==None else biarc(sp1,sp2,-f(w[k][i-1]),-f(w[k][i]))
# print_((-f(w[k][i-1]),-f(w[k][i]), [i1[5] for i1 in l1]) )
c += [[[subpath[-1][1][0], subpath[-1][1][1]], 'end', 0, 0]]
print_("Curve: " + str(c))
return c
def draw_curve(self, curve, layer, group=None, style=styles["biarc_style"]):
self.get_defs()
# Add marker to defs if it does not exist
if "DrawCurveMarker" not in self.defs:
defs = etree.SubElement(self.document.getroot(), inkex.addNS("defs", "svg"))
marker = etree.SubElement(defs, inkex.addNS("marker", "svg"),
{"id": "DrawCurveMarker", "orient": "auto", "refX": "-8",
"refY": "-2.41063", "style": "overflow:visible"})
etree.SubElement(marker, inkex.addNS("path", "svg"),
{
"d": "m -6.55552,-2.41063 0,0 L -13.11104,0 c 1.0473,-1.42323 1.04126,-3.37047 0,-4.82126",
"style": "fill:#000044; fill-rule:evenodd;stroke-width:0.62500000;stroke-linejoin:round;"}
)
if "DrawCurveMarker_r" not in self.defs:
defs = etree.SubElement(self.document.getroot(), inkex.addNS("defs", "svg"))
marker = etree.SubElement(defs, inkex.addNS("marker", "svg"),
{"id": "DrawCurveMarker_r", "orient": "auto", "refX": "8",
"refY": "-2.41063", "style": "overflow:visible"})
etree.SubElement(marker, inkex.addNS("path", "svg"),
{
"d": "m 6.55552,-2.41063 0,0 L 13.11104,0 c -1.0473,-1.42323 -1.04126,-3.37047 0,-4.82126",
"style": "fill:#000044; fill-rule:evenodd;stroke-width:0.62500000;stroke-linejoin:round;"}
)
for i in [0, 1]:
style['biarc%s_r' % i] = simplestyle.parseStyle(style['biarc%s' % i])
style['biarc%s_r' % i]["marker-start"] = "url(#DrawCurveMarker_r)"
del (style['biarc%s_r' % i]["marker-end"])
style['biarc%s_r' % i] = simplestyle.formatStyle(style['biarc%s_r' % i])
if group is None:
group = etree.SubElement(self.layers[min(1, len(self.layers) - 1)], inkex.addNS('g', 'svg'),
{"gcodetools": "Preview group"})
s, arcn = '', 0
a, b, c = [0., 0.], [1., 0.], [0., 1.]
k = (b[0] - a[0]) * (c[1] - a[1]) - (c[0] - a[0]) * (b[1] - a[1])
a, b, c = self.transform(a, layer, True), self.transform(b, layer, True), self.transform(c, layer, True)
if ((b[0] - a[0]) * (c[1] - a[1]) - (c[0] - a[0]) * (b[1] - a[1])) * k > 0:
reverse_angle = 1
else:
reverse_angle = -1
for sk in curve:
si = sk[:]
si[0], si[2] = self.transform(si[0], layer, True), (
self.transform(si[2], layer, True) if type(si[2]) == type([]) and len(si[2]) == 2 else si[2])
if s != '':
if s[1] == 'line':
etree.SubElement(group, inkex.addNS('path', 'svg'),
{
'style': style['line'],
'd': 'M %s,%s L %s,%s' % (s[0][0], s[0][1], si[0][0], si[0][1]),
"gcodetools": "Preview",
}
)
elif s[1] == 'arc':
arcn += 1
sp = s[0]
c = s[2]
s[3] = s[3] * reverse_angle
a = ((P(si[0]) - P(c)).angle() - (P(s[0]) - P(c)).angle()) % math.pi2 # s[3]
if s[3] * a < 0:
if a > 0:
a = a - math.pi2
else:
a = math.pi2 + a
r = math.sqrt((sp[0] - c[0]) ** 2 + (sp[1] - c[1]) ** 2)
a_st = (math.atan2(sp[0] - c[0], - (sp[1] - c[1])) - math.pi / 2) % (math.pi * 2)
st = style['biarc%s' % (arcn % 2)][:]
if a > 0:
a_end = a_st + a
st = style['biarc%s' % (arcn % 2)]
else:
a_end = a_st * 1
a_st = a_st + a
st = style['biarc%s_r' % (arcn % 2)]
etree.SubElement(group, inkex.addNS('path', 'svg'),
{
'style': st,
inkex.addNS('cx', 'sodipodi'): str(c[0]),
inkex.addNS('cy', 'sodipodi'): str(c[1]),
inkex.addNS('rx', 'sodipodi'): str(r),
inkex.addNS('ry', 'sodipodi'): str(r),
inkex.addNS('start', 'sodipodi'): str(a_st),
inkex.addNS('end', 'sodipodi'): str(a_end),
inkex.addNS('open', 'sodipodi'): 'true',
inkex.addNS('type', 'sodipodi'): 'arc',
"gcodetools": "Preview",
})
s = si
def check_dir(self):
if self.options.directory[-1] not in ["/", "\\"]:
if "\\" in self.options.directory:
self.options.directory += "\\"
else:
self.options.directory += "/"
print_("Checking direcrory: '%s'" % self.options.directory)
if (os.path.isdir(self.options.directory)):
if (os.path.isfile(self.options.directory + 'header')):
f = open(self.options.directory + 'header', 'r')
self.header = f.read()
f.close()
else:
self.header = defaults['header']
if (os.path.isfile(self.options.directory + 'footer')):
f = open(self.options.directory + 'footer', 'r')
self.footer = f.read()
f.close()
else:
self.footer = defaults['footer']
if self.options.unit == "G21 (All units in mm)":
self.header += "G21\n"
elif self.options.unit == "G20 (All units in inches)":
self.header += "G20\n"
else:
self.error(_("Directory does not exist! Please specify existing directory at options tab!"), "error")
return False
if self.options.add_numeric_suffix_to_filename:
dir_list = os.listdir(self.options.directory)
if "." in self.options.file:
r = re.match(r"^(.*)(\..*)$", self.options.file)
ext = r.group(2)
name = r.group(1)
else:
ext = ""
name = self.options.file
max_n = 0
for s in dir_list:
r = re.match(r"^%s_0*(\d+)%s$" % (re.escape(name), re.escape(ext)), s)
if r:
max_n = max(max_n, int(r.group(1)))
filename = name + "_" + ("0" * (4 - len(str(max_n + 1))) + str(max_n + 1)) + ext
self.options.file = filename
print_("Testing writing rights on '%s'" % (self.options.directory + self.options.file))
try:
f = open(self.options.directory + self.options.file, "w")
f.close()
except:
self.error(_("Can not write to specified file!\n%s" % (self.options.directory + self.options.file)),
"error")
return False
return True
################################################################################
#
# Generate Gcode
#
# Curve definition
# [start point, type = {'arc','line','move','end'}, arc center, arc angle, end point, [zstart, zend]]
#
################################################################################
def generate_gcode(self, curve, layer, depth):
tool = self.tools
print_("Tool in g-code generator: " + str(tool))
def c(c):
c = [c[i] if i < len(c) else None for i in range(6)]
if c[5] == 0: c[5] = None
s = [" X", " Y", " Z", " I", " J", " K"]
r = ''
for i in range(6):
if c[i] != None:
r += s[i] + ("%f" % (round(c[i], 4))).rstrip('0')
return r
if len(curve) == 0: return ""
try:
self.last_used_tool == None
except:
self.last_used_tool = None
print_("working on curve")
print_("Curve: " + str(curve))
g = ""
lg, f = 'G00', "F%f" % tool['penetration feed']
penetration_feed = "F%s" % tool['penetration feed']
current_a = 0
for i in range(1, len(curve)):
# Creating Gcode for curve between s=curve[i-1] and si=curve[i] start at s[0] end at s[4]=si[0]
s, si = curve[i - 1], curve[i]
feed = f if lg not in ['G01', 'G02', 'G03'] else ''
if s[1] == 'move':
g += "G1 " + c(si[0]) + "\n" + tool['gcode before path'] + "\n"
lg = 'G00'
elif s[1] == 'end':
g += tool['gcode after path'] + "\n"
lg = 'G00'
elif s[1] == 'line':
if lg == "G00": g += "G1 " + feed + "\n"
g += "G1 " + c(si[0]) + "\n"
lg = 'G01'
elif s[1] == 'arc':
r = [(s[2][0] - s[0][0]), (s[2][1] - s[0][1])]
if lg == "G00": g += "G1 " + feed + "\n"
if (r[0] ** 2 + r[1] ** 2) > .1:
r1, r2 = (P(s[0]) - P(s[2])), (P(si[0]) - P(s[2]))
if abs(r1.mag() - r2.mag()) < 0.001:
g += ("G2" if s[3] < 0 else "G3") + c(
si[0] + [None, (s[2][0] - s[0][0]), (s[2][1] - s[0][1])]) + "\n"
else:
r = (r1.mag() + r2.mag()) / 2
g += ("G2" if s[3] < 0 else "G3") + c(si[0]) + " R%f" % (r) + "\n"
lg = 'G02'
else:
g += "G1 " + c(si[0]) + " " + feed + "\n"
lg = 'G01'
if si[1] == 'end':
g += tool['gcode after path'] + "\n"
return g
def get_transforms(self, g):
root = self.document.getroot()
trans = []
while (g != root):
if 'transform' in list(g.keys()):
t = g.get('transform')
t = [list(row) for row in Transform(t).matrix]
trans = [list(row) for row in (Transform(t) * Transform(trans)).matrix] if trans != [] else t
print_(trans)
g = g.getparent()
return trans
def apply_transforms(self, g, csp):
trans = self.get_transforms(g)
if trans != []:
csp = Path(csp).transform(Transform(trans)).to_superpath()
return csp
def transform(self, source_point, layer, reverse=False):
if layer == None:
layer = self.current_layer if self.current_layer is not None else self.document.getroot()
if layer not in self.transform_matrix:
for i in range(self.layers.index(layer), -1, -1):
if self.layers[i] in self.orientation_points:
break
print_(str(self.layers))
print_(str("I: " + str(i)))
print_("Transform: " + str(self.layers[i]))
if self.layers[i] not in self.orientation_points:
self.error(_(
"Orientation points for '%s' layer have not been found! Please add orientation points using Orientation tab!") % layer.get(
inkex.addNS('label', 'inkscape')), "no_orientation_points")
elif self.layers[i] in self.transform_matrix:
self.transform_matrix[layer] = self.transform_matrix[self.layers[i]]
else:
orientation_layer = self.layers[i]
if len(self.orientation_points[orientation_layer]) > 1:
self.error(
_("There are more than one orientation point groups in '%s' layer") % orientation_layer.get(
inkex.addNS('label', 'inkscape')), "more_than_one_orientation_point_groups")
points = self.orientation_points[orientation_layer][0]
if len(points) == 2:
points += [[[(points[1][0][1] - points[0][0][1]) + points[0][0][0],
-(points[1][0][0] - points[0][0][0]) + points[0][0][1]],
[-(points[1][1][1] - points[0][1][1]) + points[0][1][0],
points[1][1][0] - points[0][1][0] + points[0][1][1]]]]
if len(points) == 3:
print_("Layer '%s' Orientation points: " % orientation_layer.get(inkex.addNS('label', 'inkscape')))
for point in points:
print_(point)
# Zcoordinates definition taken from Orientatnion point 1 and 2
self.Zcoordinates[layer] = [max(points[0][1][2], points[1][1][2]),
min(points[0][1][2], points[1][1][2])]
matrix = numpy.array([
[points[0][0][0], points[0][0][1], 1, 0, 0, 0, 0, 0, 0],
[0, 0, 0, points[0][0][0], points[0][0][1], 1, 0, 0, 0],
[0, 0, 0, 0, 0, 0, points[0][0][0], points[0][0][1], 1],
[points[1][0][0], points[1][0][1], 1, 0, 0, 0, 0, 0, 0],
[0, 0, 0, points[1][0][0], points[1][0][1], 1, 0, 0, 0],
[0, 0, 0, 0, 0, 0, points[1][0][0], points[1][0][1], 1],
[points[2][0][0], points[2][0][1], 1, 0, 0, 0, 0, 0, 0],
[0, 0, 0, points[2][0][0], points[2][0][1], 1, 0, 0, 0],
[0, 0, 0, 0, 0, 0, points[2][0][0], points[2][0][1], 1]
])
if numpy.linalg.det(matrix) != 0:
m = numpy.linalg.solve(matrix,
numpy.array(
[[points[0][1][0]], [points[0][1][1]], [1], [points[1][1][0]],