def write_zig_gcode_file(filename, n_triangles, t1,n1,tol,t2,n2, toolpath):
ngc_writer.clearance_height= 5 # XY rapids at this height
ngc_writer.feed_height = 3 # use z plunge-feed below this height
ngc_writer.feed = 200 # feedrate
ngc_writer.plunge_feed = 100 # plunge feedrate
ngc_writer.metric = False # metric/inch flag
ngc_writer.comment( " OpenCAMLib %s" % ocl.version() ) # git version-tag
# it is probably useful to include this in all g-code output, so that bugs/problems can be tracked
ngc_writer.comment( " STL surface: %s" % filename )
ngc_writer.comment( " triangles: %d" % n_triangles )
ngc_writer.comment( " OpenCamLib::AdaptivePathDropCutter run took %.2f s" % t1 )
ngc_writer.comment( " got %d raw CL-points " % n1 )
ngc_writer.comment( " filtering to tolerance %.4f " % ( tol ) )
ngc_writer.comment( " got %d filtered CL-points. Filter done in %.3f s " % ( n2 , t2 ) )
ngc_writer.preamble()
# a "Zig" or one-way parallel finish path
# 1) lift to clearance height
# 2) XY rapid to start of path
# 3) plunge to correct z-depth
# 4) feed along path until end
for path in toolpath:
ngc_writer.pen_up()
first_pt = path[0]
ngc_writer.xy_rapid_to( first_pt.x, first_pt.y )
ngc_writer.pen_down( first_pt.z )
for p in path[1:]:
ngc_writer.line_to(p.x,p.y,p.z)
ngc_writer.postamble() # end of program
def write_zig_gcode_file(filename, n_triangles, t1, n1, tol, t2, n2, toolpath):
ngc_writer.clearance_height = 5 # XY rapids at this height
ngc_writer.feed_height = 3 # use z plunge-feed below this height
ngc_writer.feed = 200 # feedrate
ngc_writer.plunge_feed = 100 # plunge feedrate
ngc_writer.metric = False # metric/inch flag
ngc_writer.comment(" OpenCAMLib %s" % ocl.version()) # git version-tag
# it is probably useful to include this in all g-code output, so that bugs/problems can be tracked
ngc_writer.comment(" STL surface: %s" % filename)
ngc_writer.comment(" triangles: %d" % n_triangles)
ngc_writer.comment(" OpenCamLib::AdaptivePathDropCutter run took %.2f s" %
t1)
ngc_writer.comment(" got %d raw CL-points " % n1)
ngc_writer.comment(" filtering to tolerance %.4f " % (tol))
ngc_writer.comment(" got %d filtered CL-points. Filter done in %.3f s " %
(n2, t2))
ngc_writer.preamble()
# a "Zig" or one-way parallel finish path
# 1) lift to clearance height
# 2) XY rapid to start of path
# 3) plunge to correct z-depth
# 4) feed along path until end
for path in toolpath:
ngc_writer.pen_up()
first_pt = path[0]
ngc_writer.xy_rapid_to(first_pt.x, first_pt.y)
ngc_writer.pen_down(first_pt.z)
for p in path[1:]:
ngc_writer.line_to(p.x, p.y, p.z)
ngc_writer.postamble() # end of program
def OutputGCode(lev, paths, fn):
nw.clearance_height = config.top + config.clearance_above_top
nw.feed_height = config.top + config.engage_above_top
nw.feed = config.feed
nw.plunge_feed = config.plunge_feed
nw.writer = FileWriter(fn)
nw.comment("============ START G-CODE ===============")
nw.preamble()
nw.pen_up()
pairs = zip(lev, paths)
for lev, path in sorted(pairs, key = lambda(p): -p[0]):
nw.comment("level=%s" % lev)
for curve in path:
vertices = curve.getVertices()
current = vertices[0].p
nw.xy_rapid_to(current.x, current.y)
nw.pen_down(lev)
for v in vertices[1:]:
if v.type == 0:
nw.line_to(v.p.x, v.p.y, lev)
else:
r = math.hypot(v.p.x - v.c.x, v.p.y - v.c.y)
nw.xy_arc_to(v.p.x, v.p.y, r, v.c.x, v.c.y, v.type != 1)
nw.pen_up()
nw.postamble()
nw.comment("============ END G-CODE ===============")
nw.writer.Close()
def printCLPoints(cl_filtered_paths):
ngc_writer.preamble()
for path in cl_filtered_paths:
ngc_writer.pen_up()
first_pt = path[0]
ngc_writer.xy_rapid_to( first_pt.x, first_pt.y )
ngc_writer.pen_down( first_pt.z )
for p in path[1:]:
ngc_writer.line_to(p.x,p.y,p.z)
ngc_writer.postamble()
def printCLPoints(cl_filtered_paths):
ngc_writer.preamble()
for path in cl_filtered_paths:
ngc_writer.pen_up()
first_pt = path[0]
ngc_writer.xy_rapid_to(first_pt.x, first_pt.y)
ngc_writer.pen_down(first_pt.z)
for p in path[1:]:
ngc_writer.line_to(p.x, p.y, p.z)
ngc_writer.postamble()
print_scale= float(text_length)/float(0.6)
times = insert_many_polygons(vd,segs) # insert segments into vd
# count the number of segments
num_segs = 0
for s in segs:
num_segs = num_segs + len(s)
text_length = (extents.maxx-extents.minx)*scale*print_scale
text_height = (extents.maxy-extents.miny)*scale*print_scale
# print comments to g-code file
print "( ttt2medial.py - experimental v-carving script )"
print "( TTT++",ttt.version()," )"
print "( OpenVoronoi",ovd.version()," )"
print "( number of polygons: ", len(segs)," )"
print "( number of segments: ", num_segs ," )"
print "( text length: ", text_length ," )"
print "( text height: ",text_height," )"
print "( VD built in %02.3f seconds = %02f us* n*log2{n} )" % ( sum(times), 1e6*float(sum(times))/(float(num_segs)*float(math.log10(num_segs)/math.log10(2))) )
print "( VD check: ", vd.check(), " )"
pi = ovd.PolygonInterior( True ) # filter so that only polygon interior remains
vd.filter_graph(pi)
ma = ovd.MedialAxis() # filter so that only medial axis remains
vd.filter_graph(ma)
ngc_writer.preamble()
printMedial( vd , print_scale) # the actual cutting g-code
ngc_writer.postamble()
cut_width = 0.002
mapocket = ovd.MedialAxisPocket(vd3.getGraph())
mapocket.setWidth(cut_width)
mapocket.debug(True)
t_before = time.time()
mapocket.run()
t_after = time.time()
# print "( MA-pocket done in %.3f s. Got %d MICs )" % ((t_after-t_before),len(mic_list) )
mic_components = mapocket.get_mic_components()
mic_list = mic_components[0] # mapocket.get_mic_list()
ngc_writer.scale = 10 / 0.03
ngc_writer.preamble()
for mic_list in mic_components:
drawToolPath(myscreen, mic_list, cut_width)
ngc_writer.postamble()
sys.stdout = sys.__stdout__ # remember to reset sys.stdout!
f = open('output.nc', 'w')
for item in foo.content:
if item != '\n':
print >> f, item
f.close()
print "python done."