pycam 31.1 KB
Newer Older
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
#!/usr/bin/env python
# -*- coding: utf-8 -*-
"""
$Id$

Copyright 2010 Lars Kruse <devel@sumpfralle.de>
Copyright 2008-2009 Lode Leroy

This file is part of PyCAM.

PyCAM 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 3 of the License, or
(at your option) any later version.

PyCAM 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 PyCAM.  If not, see <http://www.gnu.org/licenses/>.
"""

25
# extend the PYTHONPATH to include the "src" directory
26 27 28
import sys
import os
sys.path.insert(0, os.path.join(os.path.dirname(__file__), "src"))
29

30 31 32 33 34
# register the glut32.dll manually for the pyinstaller standalone executable
if hasattr(sys, "frozen") and sys.frozen and "_MEIPASS2" in os.environ:
    from ctypes import windll
    windll[os.path.join(os.environ["_MEIPASS2"], "glut32.dll")]

35 36 37 38 39 40
from pycam.Physics.ode_physics import override_ode_availability
import pycam.Gui.common as GuiCommon
import pycam.Gui.Settings
import pycam.Gui.Console
import pycam.Importers.TestModel
import pycam.Importers
41
import pycam.Exporters.GCodeExporter
42
import pycam.Toolpath.Generator
43
import pycam.Utils.threading
44
import pycam.Utils
45 46 47
from pycam.Toolpath import Bounds, Toolpath
from pycam import VERSION
import pycam.Utils.log
48
from optparse import OptionParser
49
import socket
50 51 52
import logging
import time

53 54 55 56 57 58 59 60 61
# we need the multiprocessing exception for remote connections
try:
    import multiprocessing
except ImportError:
    class multiprocessing:
        # use an arbitrary other Exception
        AuthenticationError = socket.error


62 63 64 65 66 67 68 69 70 71 72
log = pycam.Utils.log.get_logger()

EXAMPLE_MODEL_LOCATIONS = [
        os.path.join(os.path.dirname(__file__), "samples"),
        os.path.join(sys.prefix, "share", "pycam", "samples"),
        os.path.join("usr", "share", "pycam", "samples")]
# for pyinstaller (windows distribution)
if "_MEIPASS2" in os.environ:
    EXAMPLE_MODEL_LOCATIONS.insert(0, os.path.join(os.environ["_MEIPASS2"], "samples"))
DEFAULT_MODEL_FILE = "pycam.stl"
EXIT_CODES = {"ok": 0, "requirements": 1, "load_model_failed": 2,
73 74
        "write_output_failed": 3, "parsing_failed": 4,
        "server_without_password": 5, "connection_error": 6}
75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154


def show_gui(inputfile=None, task_settings_file=None):
    deps_gtk = GuiCommon.requirements_details_gtk()
    report_gtk = GuiCommon.get_dependency_report(deps_gtk, prefix="\t")
    if GuiCommon.check_dependencies(deps_gtk):
        from pycam.Gui.Project import ProjectGui
        gui_class = ProjectGui
    else:
        full_report = []
        full_report.append("PyCAM dependency problem")
        full_report.append("Error: Failed to load the GTK interface.")
        full_report.append("Details:")
        full_report.append(report_gtk)
        full_report.append("")
        full_report.append("Detailed list of requirements: %s" % GuiCommon.REQUIREMENTS_LINK)
        log.critical(os.linesep.join(full_report))
        sys.exit(EXIT_CODES["requirements"])

    gui = gui_class()

    # load the given model or the default
    if inputfile is None:
        default_model = get_default_model()
        if isinstance(default_model, basestring):
            gui.load_model_file(filename=default_model)
        else:
            gui.load_model(default_model)
    else:
        gui.load_model_file(filename=inputfile)

    # load task settings file
    if not task_settings_file is None:
        gui.open_task_settings_file(task_settings_file)

    # open the GUI
    gui.mainloop()


def get_default_model():
    """ return a filename or a Model instance """
    # try to load the default model file ("pycam" logo)
    for inputdir in EXAMPLE_MODEL_LOCATIONS:
        inputfile = os.path.join(inputdir, DEFAULT_MODEL_FILE)
        if os.path.isfile(inputfile):
            return inputfile
    else:
        # fall back to the simple test model
        log.warn("Failed to find the default model (%s) in the " \
                "following locations: %s" % (DEFAULT_MODEL_FILE,
                        ", ".join(EXAMPLE_MODEL_LOCATIONS)))
        return pycam.Importers.TestModel.get_test_model()

def load_model_file(filename, program_locations):
    filename = os.path.expanduser(filename)
    if not os.path.isfile(filename):
        log.warn("The input file ('%') was not found!" % filename)
        return None
    filetype, importer = pycam.Importers.detect_file_type(filename)
    model = importer(filename, program_locations=program_locations)
    if model is None:
        log.warn("Failed to load the model file (%s)." % filename)
        return None
    else:
        return model

def get_output_handler(destination):
    if destination == "-":
        handler = sys.stdout
        closer = lambda: None
    else:
        try:
            handler = open(destination, "w")
        except IOError, err_msg:
            log.error("Failed to open output file (%s) for writing: %s" \
                    % (destination, err_msg))
            return None, None
        closer = handler.close
    return (handler, closer)

155
def execute(parser, opts, args, pycam):
156
    # try to change the process name
157
    pycam.Utils.setproctitle("pycam")
158

159 160 161 162 163
    if len(args) > 0:
        inputfile = os.path.expanduser(args[0])
    else:
        inputfile = None

164 165 166
    if opts.debug:
        log.setLevel(logging.DEBUG)
    elif opts.quiet:
167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196
        log.setLevel(logging.WARNING)
        # disable the progress bar
        opts.progress = "none"

    # show version and exit
    if opts.show_version:
        if opts.quiet:
            # print only the bare version number
            print VERSION
        else:
            print "PyCAM %s" % VERSION
            print "Copyright (C) 2008-2010 Lode Leroy"
            print "Copyright (C) 2010 Lars Kruse"
            print
            print "License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>."
            print "This is free software: you are free to change and redistribute it."
            print "There is NO WARRANTY, to the extent permitted by law."
        sys.exit(EXIT_CODES["ok"])

    if not opts.disable_psyco:
        try:
            import psyco
            psyco.full()
            log.info("Psyco enabled")
        except ImportError:
            log.info("Psyco is not available (performance will probably " \
                    + "suffer slightly)")
    else:
        log.info("Psyco was disabled via the commandline")

197 198 199 200 201 202 203 204 205
    # check if server-auth-key is given -> this is mandatory for server mode
    if (opts.enable_server or opts.start_server) and not opts.server_authkey:
        parser.error("You need to supply a shared secret for server mode. " \
                + "This is supposed to prevent you from exposing your host " \
                + "to remote access without authentication.\n" \
                + "Please add the '--server-auth-key' argument followed by " \
                + "a shared secret password.")
        sys.exit(EXIT_CODES["server_without_password"])

206
    # initialize multiprocessing
207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224
    try:
        if opts.start_server:
            pycam.Utils.threading.init_threading(opts.parallel_processes,
                    remote=opts.remote_server, run_server=True,
                    server_credentials=opts.server_authkey)
            pycam.Utils.threading.cleanup()
            sys.exit(EXIT_CODES["ok"])
        else:
            pycam.Utils.threading.init_threading(opts.parallel_processes,
                    enable_server=opts.enable_server, remote=opts.remote_server,
                    server_credentials=opts.server_authkey)
    except socket.error, err_msg:
        log.error("Failed to connect to remote server: %s" % err_msg)
        sys.exit(EXIT_CODES["connection_error"])
    except multiprocessing.AuthenticationError, err_msg:
        log.error("The remote server rejected your authentication key: %s" \
                % err_msg)
        sys.exit(EXIT_CODES["connection_error"])
225

226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264
    # initialize the progress bar
    progress_styles = {"none": pycam.Gui.Console.ConsoleProgressBar.STYLE_NONE,
            "text": pycam.Gui.Console.ConsoleProgressBar.STYLE_TEXT,
            "bar": pycam.Gui.Console.ConsoleProgressBar.STYLE_BAR,
            "dot": pycam.Gui.Console.ConsoleProgressBar.STYLE_DOT,
    }
    progress_bar = pycam.Gui.Console.ConsoleProgressBar(sys.stdout,
            progress_styles[opts.progress])

    if opts.config_file:
        opts.config_file = os.path.expanduser(opts.config_file)

    if not opts.export_gcode and not opts.export_task_config:
        show_gui(inputfile, opts.config_file)
    else:
        # generate toolpath
        tps = pycam.Gui.Settings.ToolpathSettings()
        tool_shape = {"cylindrical": "CylindricalCutter",
                "spherical": "SphericalCutter",
                "toroidal": "ToroidalCutter",
            }[opts.tool_shape]
        tps.set_tool(opts.tool_id, tool_shape, 0.5 * opts.tool_diameter,
                0.5 * opts.tool_torus_diameter, opts.tool_spindle_speed,
                opts.tool_feedrate)
        if opts.support_grid_enabled:
            tps.set_support_grid(opts.support_grid_distance_x,
                    opts.support_grid_distance_y, opts.support_grid_thickness,
                    opts.support_grid_height)
        if opts.collision_engine == "ode":
            tps.set_calculation_backend("ODE")
        tps.set_unit_size(opts.unit_size)
        path_generator = {"layer": "PushCutter",
                "surface": "DropCutter",
                "engrave": "EngraveCutter",
            }[opts.process_path_generator]
        postprocessor = {"zigzag": "ZigZagCutter",
                "contour": "ContourCutter",
                "polygon": "PolygonCutter",
            }[opts.process_path_postprocessor]
265
        # TODO: add the miling_style option
266
        tps.set_process_settings(path_generator, postprocessor,
267 268 269 270
                opts.process_path_direction, reverse=False,
                material_allowance=opts.process_material_allowance,
                overlap=opts.process_overlap_percent / 100.0,
                step_down=opts.process_step_down, engrave_offset=opts.process_engrave_offset)
271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324
        # set locations of external programs
        program_locations = {}
        if opts.external_program_inkscape:
            program_locations["inkscape"] = opts.external_program_inkscape
        if opts.external_program_pstoedit:
            program_locations["pstoedit"] = opts.external_program_pstoedit
        # load the model
        if inputfile is None:
            model = get_default_model()
            # the "get_default_model" function returns a string or a model
            if isinstance(model, basestring):
                model = load_model_file(model,
                        program_locations=program_locations,
                        unit=opts.unit_size)
        else:
            model = load_model_file(inputfile,
                    program_locations=program_locations, unit=opts.unit_size)
        if model is None:
            # something went wrong - we quit
            sys.exit(EXIT_CODES["load_model_failed"])
        # calculate the processing boundary
        bounds = Bounds()
        bounds.set_reference(model.get_bounds())
        # set the bounds type and let the default bounding box match the model
        if opts.bounds_type == "relative-margin":
            bounds.set_type(Bounds.TYPE_RELATIVE_MARGIN)
            bounds_default_low = (0, 0, 0)
            bounds_default_high = (0, 0, 0)
        elif opts.bounds_type == "fixed-margin":
            bounds.set_type(Bounds.TYPE_FIXED_MARGIN)
            bounds_default_low = (0, 0, 0)
            bounds_default_high = (0, 0, 0)
        else:
            # custom boundary setting
            bounds.set_type(Bounds.TYPE_CUSTOM)
            bounds_default_low = (model.minx, model.miny, model.minz)
            bounds_default_high = (model.maxx, model.maxy, model.maxz)
        # TODO: use the optparse conversion callback instead
        def parse_triple_float(text):
            nums = text.split(",")
            if len(nums) != 3:
                return None
            result = []
            for num in nums:
                try:
                    result.append(float(num))
                except ValueError:
                    if num == "":
                        result.append(0.0)
                    else:
                        return None
            return result
        bounds_lower_nums = parse_triple_float(opts.bounds_lower)
        if opts.bounds_lower and not bounds_lower_nums:
325
            parser.error("Failed to parse the lower boundary limit: %s" \
326 327 328 329
                    % opts.bounds_lower)
            sys.exit(EXIT_CODES["parsing_failed"])
        bounds_upper_nums = parse_triple_float(opts.bounds_upper)
        if opts.bounds_upper and not bounds_upper_nums:
330
            parser.error("Failed to parse the upper boundary limit: %s" \
331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367
                    % opts.bounds_upper)
            sys.exit(EXIT_CODES["parsing_failed"])
        if bounds_lower_nums is None:
            bounds_lower_nums = bounds_default_low
        if bounds_upper_nums is None:
            bounds_upper_nums = bounds_default_high
        # both lower and upper bounds were specified
        bounds.set_bounds(bounds_lower_nums, bounds_upper_nums)
        # adjust the bounding box according to the "boundary_mode"
        if opts.boundary_mode == "along":
            offset = (0, 0, 0)
        elif opts.boundary_mode == "inside":
            offset = (-0.5 * opts.tool_diameter, -0.5 * opts.tool_diameter, 0)
        else:
            # "outside"
            offset = (0.5 * opts.tool_diameter, 0.5 * opts.tool_diameter, 0)
        process_bounds = Bounds(Bounds.TYPE_FIXED_MARGIN, offset, offset)
        process_bounds.set_reference(bounds)
        tps.set_bounds(process_bounds)
        if opts.export_gcode:
            # generate the toolpath
            start_time = time.time()
            toolpath = pycam.Toolpath.Generator.generate_toolpath_from_settings(
                    model, tps, callback=progress_bar.update)
            progress_bar.finish()
            log.info("Toolpath generation time: %f" \
                    % (time.time() - start_time))
            # write result
            if isinstance(toolpath, basestring):
                # an error occoured
                log.error(toolpath)
            else:
                description = "Toolpath generated via PyCAM v%s" % VERSION
                tp_obj = Toolpath(toolpath, description, tps)
                handler, closer = get_output_handler(opts.export_gcode)
                if handler is None:
                    sys.exit(EXIT_CODES["write_output_failed"])
368 369 370
                # TODO: change to the new gcode exporter
                generator = pycam.Exporters.GCodeExporter.GCodeGenerator(
                        handler, metric_units = (opts.unit_size == "mm"),
371
                        safety_height=opts.safety_height,
372 373 374 375 376 377 378 379 380 381 382 383 384 385 386
                        toggle_spindle_status=opts.gcode_no_start_stop_spindle)
                generator.set_speed(opts.tool_feedrate, opts.tool_spindle_speed)
                path_mode = opts.gcode_path_mode
                PATH_MODES = pycam.Exporters.GCodeExporter.PATH_MODES
                if (path_mode == "continuous") \
                        and (not opts.gcode_motion_tolerance is None):
                    if opts.gcode_naive_tolerance == 0:
                        naive_tolerance = None
                    else:
                        naive_tolerance = opts.gcode_naive_tolerance
                    generator.set_path_mode(PATH_MODES["continuous"],
                            opts.gcode_motion_tolerance, naive_tolerance)
                else:
                    generator.set_path_mode(PATH_MODES[opts.gcode_path_mode])
                generator.add_path_list(toolpath,
387 388 389 390 391 392 393 394 395 396
                        max_skip_safety_distance=opts.tool_diameter,
                        comment=tp_obj.get_meta_data())
                closer()
        if opts.export_task_config:
            handler, closer = get_output_handler(opts.export_task_config)
            if handler is None:
                sys.exit(EXIT_CODES["write_output_failed"])
            print >>handler, tps.get_string()
            closer()

397 398 399

# define the commandline interface
if __name__ == "__main__":
400 401 402 403 404 405
    # The PyInstaller standalone executable requires this "freeze_support" call.
    # Otherwise we will see a warning regarding an invalid argument called
    # "--multiprocessing-fork". This problem can be triggered on single-core
    # systems with these arguments: "--enable-server --server-auth-key foo".
    if hasattr(multiprocessing, "freeze_support"):
        multiprocessing.freeze_support()
406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467
    parser = OptionParser(prog="PyCAM",
            usage="usage: pycam [options] [inputfile]\n\n" \
                    + "Start the PyCAM toolpath generator. Supplying one of " \
                    + "the '--export-?' parameters will cause PyCAM to start " \
                    + "in batch mode. Most parameters are useful only for " \
                    + "batch mode.",
            epilog="Take a look at the wiki for more information: " \
                    + "http://sourceforge.net/apps/mediawiki/pycam/.\n" \
                    + "Bug reports: http://sourceforge.net/tracker/?group_id=237831&atid=1104176")
    group_general = parser.add_option_group("General options")
    group_export = parser.add_option_group("Export formats",
            "Export the resulting toolpath or meta-data in various formats. " \
            + "These options trigger the non-interactive mode. Thus the GUI " \
            + "is disabled.")
    group_tool = parser.add_option_group("Tool definition",
            "Specify the tool paramters. The default tool is spherical and " \
            + "has a diameter of 1 unit. The default speeds are 1000 " \
            + "units/minute (feedrate) and 250 (spindle rotations per minute)")
    group_process = parser.add_option_group("Process definition",
            "Specify the process parameters: toolpath strategy, layer height," \
            + " and others. A typical roughing operation is configured by " \
            + "default.")
    group_bounds = parser.add_option_group("Boundary definition",
            "Specify the outer limits of the processing area (x/y/z). " \
            + "You may choose between 'relative_margin' (margin is given as " \
            + "percentage of the respective model dimension), 'fixed_margin' " \
            + "(margin for each face given in absolute units of length) " \
            + "and 'custom' (absolute coordinates of the bounding box - " \
            + "regardless of the model size and position). Negative values " \
            + "are allowed and can make sense (e.g. negative margin).")
    group_support_grid = parser.add_option_group("Support grid",
            "An optional support grid can be used to keep the object in " \
            + "place during the mill operation. The support grid can be " \
            + "removed manually afterwards. The support grid can have a " \
            + "rectangular profile. By default the support grid is disabled.")
    group_gcode = parser.add_option_group("GCode settings",
            "Specify some details of the generated GCode.")
    group_external_programs = parser.add_option_group("External programs",
            "Some optional external programs are used for format conversions.")
    # general options
    group_general.add_option("-c", "--config", dest="config_file",
            default=None, action="store", type="string",
            help="load a task settings file")
    group_general.add_option("", "--unit", dest="unit_size",
            default="mm", action="store", type="choice",
            choices=["mm", "inch"], help="choose 'mm' or 'inch' for all " \
            + "numbers. By default 'mm' is assumed.")
    group_general.add_option("", "--collision-engine", dest="collision_engine",
            default="triangles", action="store", type="choice",
            choices=["triangles", "ode"],
            help="choose a specific collision detection engine. The default " \
                    + "is 'triangles'. Use 'help' to get a list of possible " \
                    + "engines.")
    group_general.add_option("", "--boundary-mode", dest="boundary_mode",
            default="along", action="store", type="choice",
            choices=["inside", "along", "outside"],
            help="specify if the mill tool (including its radius) should " \
                    + "move completely 'inside', 'along' or 'outside' the " \
                    + "defined processing boundary.")
    group_general.add_option("", "--disable-psyco", dest="disable_psyco",
            default=False, action="store_true", help="disable the Psyco " \
                    + "just-in-time-compiler even when it is available")
468 469 470 471 472
    group_general.add_option("", "--number-of-processes",
            dest="parallel_processes", default=None, type="int", action="store",
            help="override the default detection of multiple CPU cores. " \
                    + "Parallel processing only works with Python 2.6 or " \
                    + "later.")
473 474 475
    group_general.add_option("", "--enable-server", dest="enable_server",
            default=False, action="store_true", help="enable a local server " \
                    + "and (optionally) remote worker servers.")
476 477 478 479 480 481 482 483 484 485 486 487
    group_general.add_option("", "--remote-server", dest="remote_server",
            default=None, action="store", type="string", help="Connect to a " \
                    + "remote task server to distribute the processing load. " \
                    + "The server is given as an IP or a hostname with an " \
                    + "optional port (default: 1250) separated by a colon.")
    group_general.add_option("", "--start-server-only", dest="start_server",
            default=False, action="store_true", help="Start only a local " \
                    + "server for handling remote requests.")
    group_general.add_option("", "--server-auth-key", dest="server_authkey",
            default="", action="store", type="string", help="Secret used for " \
                    + "connecting to a remote server or for granting access " \
                    + "to remote clients.")
488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630
    group_general.add_option("-q", "--quiet", dest="quiet",
            default=False, action="store_true", help="show only warnings and " \
            + "errors.")
    group_general.add_option("-d", "--debug", dest="debug",
            default=False, action="store_true", help="enable output of debug " \
            + "messages.")
    group_general.add_option("", "--progress", dest="progress",
            default="text", action="store", type="choice",
            choices=["none", "text", "bar", "dot"],
            help="specify the type of progress bar used in non-GUI mode. " \
            + "The following options are available: text, none, bar, dot.")
    group_general.add_option("", "--profiling", dest="profile_destination",
            action="store", type="string",
            help="store profiling statistics in a file (only for debugging)")
    group_general.add_option("-v", "--version", dest="show_version",
            default=False, action="store_true", help="show the current " \
            + "version of PyCAM and exit")
    # export options
    group_export.add_option("", "--export-gcode", dest="export_gcode",
            default=None, action="store", type="string",
            help="export the generated toolpaths to a file")
    group_export.add_option("", "--export-task-config",
            dest="export_task_config", default=None, action="store",
            type="string",
            help="export the current task configuration (mainly for debugging)")
    # tool options
    group_tool.add_option("", "--tool-shape", dest="tool_shape",
            default="cylindrical", action="store", type="choice",
            choices=["cylindrical", "spherical", "toroidal"],
            help="tool shape for the operation (cylindrical, spherical, " \
            + "toroidal)")
    group_tool.add_option("", "--tool-size", dest="tool_diameter",
            default=1.0, action="store", type="float",
            help="diameter of the tool")
    group_tool.add_option("", "--tool-torus-size", dest="tool_torus_diameter",
            default=0.25, action="store", type="float",
            help="torus diameter of the tool (only for toroidal tool shape)")
    group_tool.add_option("", "--tool-feedrate", dest="tool_feedrate",
            default=1000, action="store", type="float",
            help="allowed movement velocity of the tool (units/minute)")
    group_tool.add_option("", "--tool-spindle-speed", dest="tool_spindle_speed",
            default=250, action="store", type="float",
            help="rotation speed of the tool (per minute)")
    group_tool.add_option("", "--tool-id", dest="tool_id",
            default=1, action="store", type="int",
            help="tool ID - to be used for tool selection via GCode " \
            + "(default: 1)")
    # process options
    group_process.add_option("", "--process-path-direction",
            dest="process_path_direction", default="x", action="store",
            type="choice", choices=["x", "y", "xy"],
            help="primary direction of the generated toolpath (x/y/xy)")
    group_process.add_option("", "--process-path-generator",
            dest="process_path_generator", default="layer", action="store",
            type="choice", choices=["layer", "surface", "engrave"],
            help="one of the available toolpath strategies (layer, surface, " \
            + "engrave)")
    group_process.add_option("", "--process-path-postprocessor",
            dest="process_path_postprocessor", default="polygon",
            action="store", type="choice",
            choices=["polygon", "contour", "zigzag"], help="one of the " \
            + "available toolpath postprocessors (polygon, zigzag, contour)")
    group_process.add_option("", "--process-material-allowance",
            dest="process_material_allowance", default=0.0, action="store",
            type="float", help="minimum distance between the tool and the " \
            + "object (for rough processing)")
    group_process.add_option("", "--process-step-down",
            dest="process_step_down", default=3.0, action="store", type="float",
            help="the maximum thickness of each processed material layer " \
            + "(only for 'layer' strategy)")
    group_process.add_option("", "--process-overlap-percent",
            dest="process_overlap_percent", default=0, action="store",
            type="int", help="how much should two adjacent parallel " \
            + "toolpaths overlap each other (0..99)")
    group_process.add_option("", "--safety-height", dest="safety_height",
            default=25.0, action="store", type="float",
            help="height for safe re-positioning moves")
    group_process.add_option("", "--process-engrave-offset",
            dest="process_engrave_offset", default=0.0, action="store",
            type="float", help="engrave along the contour of a model with a " \
            + "given distance (only for 'engrave' strategy)")
    # bounds settings
    group_bounds.add_option("", "--bounds-type", dest="bounds_type",
            default="fixed-margin", action="store", type="choice",
            choices=["relative-margin", "fixed-margin", "custom"],
            help="type of the boundary definition (relative-margin, " \
            + "fixed-margin, custom)")
    group_bounds.add_option("", "--bounds-lower", dest="bounds_lower",
            default="", action="store", type="string",
            help="comma-separated x/y/z combination of the lower boundary " \
            + "(e.g. '4,4,-0.5')")
    group_bounds.add_option("", "--bounds-upper", dest="bounds_upper",
            default="", action="store", type="string",
            help="comma-separated x/y/z combination of the upper boundary " \
            + "(e.g. '12,5.5,0')")
    # support grid settings
    group_support_grid.add_option("", "--enable-support-grid",
            dest="support_grid_enabled", default=False, action="store_true",
            help="enable the support grid")
    group_support_grid.add_option("", "--support-grid-distance-x",
            dest="support_grid_distance_x", default=10.0, action="store",
            type="float", help="distance along the x-axis between two " \
                    + "adjacent parallel lines of the support grid pattern")
    group_support_grid.add_option("", "--support-grid-distance-y",
            dest="support_grid_distance_y", default=10.0, action="store",
            type="float", help="distance along the y-axis between two " \
                    + "adjacent parallel lines of the support grid pattern")
    group_support_grid.add_option("", "--support-grid-height",
            dest="support_grid_height", default=2.0, action="store",
            type="float", help="height of the support grid profile")
    group_support_grid.add_option("", "--support-grid-thickness",
            dest="support_grid_thickness", default=0.5, action="store",
            type="float", help="width of the support grid profile")
    # gcode options
    group_gcode.add_option("", "--gcode-no-start-stop-spindle",
            dest="gcode_no_start_stop_spindle", default=True,
            action="store_false", help="do not start the spindle before " \
            + "and stop it after each operation (M3/M5)")
    group_gcode.add_option("", "--gcode-path-mode", dest="gcode_path_mode",
            default="exact_path", action="store", type="choice",
            choices=["exact_path", "exact_stop", "continuous"],
            help="choose the GCode path mode from 'exact_path', 'exact_stop'" \
            + "and 'continuous'. See " \
            + "http://linuxcnc.org/docs/html/gcode_main.html for details")
    group_gcode.add_option("", "--gcode-motion-tolerance",
            dest="gcode_motion_tolerance", default=None,
            action="store", help="the optional motion tolerance for " \
            + "'continuous' path mode (G64).")
    group_gcode.add_option("", "--gcode-naive-tolerance",
            dest="gcode_naive_tolerance", default=None,
            action="store", help="the optional naive CAM tolerance for " \
            + "'continuous' path mode (G64).")
    # external program settings
    group_external_programs.add_option("", "--location-inkscape",
            dest="external_program_inkscape", default="", action="store",
            type="string", help="location of the Inkscape executable. " \
            + "This program is required for importing SVG files.")
    group_external_programs.add_option("", "--location-pstoedit",
            dest="external_program_pstoedit", default="", action="store",
            type="string", help="location of the PStoEdit executable. " \
            + "This program is required for importing SVG files.")
    (opts, args) = parser.parse_args()

631 632 633
    try:
        if opts.profile_destination:
            import cProfile
634 635
            cProfile.run('execute(parser, opts, args, pycam)',
                    opts.profile_destination)
636 637 638
        else:
            # We need to add the parameter "pycam" to avoid weeeeird namespace
            # issues. Any idea how to fix this?
639
            execute(parser, opts, args, pycam)
640 641
    except KeyboardInterrupt:
        log.info("Quit requested")
642 643
    pycam.Utils.threading.cleanup()