precision_drawing_tools/__init__.py

   1 # SPDX-License-Identifier: GPL-2.0-or-later
   2
   3 # <pep8 compliant>
   4 #
   5 # -----------------------------------------------------------------------
   6 # Author: Alan Odom (Clockmender), Rune Morling (ermo) Copyright (c) 2019
   7 # -----------------------------------------------------------------------
   8 #
   9 # ----------------------------------------------
  10 # Define Addon info
  11 # ----------------------------------------------
  12 #
  13 bl_info = {
  14     "name": "Precision Drawing Tools (PDT)",
  15     "author": "Alan Odom (Clockmender), Rune Morling (ermo)",
  16     "version": (1, 5, 2),
  17     "blender": (3, 0, 0),
  18     "location": "View3D > UI > PDT",
  19     "description": "Precision Drawing Tools for Accurate Modelling",
  20     "warning": "",
  21     "doc_url": "{BLENDER_MANUAL_URL}/addons/3d_view/precision_drawing_tools/index.html",
  22     "category": "3D View",
  23 }
  24
  25
  26 # ----------------------------------------------
  27 # Import modules
  28 # ----------------------------------------------
  29 if "bpy" in locals():
  30     import importlib
  31
  32     importlib.reload(pdt_design)
  33     importlib.reload(pdt_pivot_point)
  34     importlib.reload(pdt_menus)
  35     importlib.reload(pdt_library)
  36     importlib.reload(pdt_view)
  37     importlib.reload(pdt_xall)
  38     importlib.reload(pdt_bix)
  39     importlib.reload(pdt_etof)
  40     importlib.reload(pdt_tangent)
  41     importlib.reload(pdt_trig_waves)
  42 else:
  43     from . import pdt_design
  44     from . import pdt_pivot_point
  45     from . import pdt_menus
  46     from . import pdt_library
  47     from . import pdt_view
  48     from . import pdt_xall
  49     from . import pdt_bix
  50     from . import pdt_etof
  51     from . import pdt_tangent
  52     from . import pdt_trig_waves
  53
  54 import bpy
  55 import os
  56 from pathlib import Path
  57 from bpy.types import (
  58     AddonPreferences,
  59     PropertyGroup, Scene,
  60     WindowManager,
  61     Object,
  62 )
  63 from bpy.props import (
  64     BoolProperty,
  65     CollectionProperty,
  66     EnumProperty,
  67     FloatProperty,
  68     FloatVectorProperty,
  69     IntProperty,
  70     PointerProperty,
  71     StringProperty,
  72 )
  73 from .pdt_msg_strings import (
  74     PDT_DES_COORDS,
  75     PDT_DES_FILLETPROF,
  76     PDT_DES_FILLETRAD,
  77     PDT_DES_FILLETSEG,
  78     PDT_DES_FILLETVERTS,
  79     PDT_DES_FILLINT,
  80     PDT_DES_FLIPANG,
  81     PDT_DES_FLIPPER,
  82     PDT_DES_LIBCOLS,
  83     PDT_DES_LIBMATS,
  84     PDT_DES_LIBMODE,
  85     PDT_DES_LIBOBS,
  86     PDT_DES_LIBSER,
  87     PDT_DES_MOVESEL,
  88     PDT_DES_OBORDER,
  89     PDT_DES_OFFANG,
  90     PDT_DES_OFFDIS,
  91     PDT_DES_OFFPER,
  92     PDT_DES_OPMODE,
  93     PDT_DES_OUTPUT,
  94     PDT_DES_PIVOTDIS,
  95     PDT_DES_PPLOC,
  96     PDT_DES_PPSCALEFAC,
  97     PDT_DES_PPSIZE,
  98     PDT_DES_PPTRANS,
  99     PDT_DES_PPWIDTH,
 100     PDT_DES_ROTMOVAX,
 101     PDT_DES_TRIM,
 102     PDT_DES_VALIDLET,
 103     PDT_DES_WORPLANE,
 104     PDT_DES_TANCEN1,
 105     PDT_DES_TANCEN2,
 106     PDT_DES_TANCEN3,
 107     PDT_DES_RADIUS1,
 108     PDT_DES_RADIUS2,
 109     PDT_DES_TPOINT,
 110     PDT_DES_EXPCOLL,
 111     PDT_DES_TANMODE,
 112 )
 113 from .pdt_command import command_run
 114 from .pdt_functions import scale_set
 115
 116
 117 # Declare enum items variables
 118 #
 119 _pdt_obj_items = []
 120 _pdt_col_items = []
 121 _pdt_mat_items = []
 122
 123
 124 class PDTPreferences(AddonPreferences):
 125     # This must match the addon name, use '__package__'
 126     # when defining this in a submodule of a python package.
 127
 128     bl_idname = __name__
 129
 130     debug: BoolProperty(
 131         name="Enable console debug output from PDT scripts",
 132         default=False,
 133         description="NOTE: Does not enable debugging globally in Blender (only in PDT scripts)",
 134     )
 135
 136     pdt_ui_width: IntProperty(
 137         name="UI Width Cut-off",
 138         default=350,
 139         description="Cutoff width for shrinking items per line in menus",
 140     )
 141
 142     pdt_input_round: IntProperty(
 143         name="Input Rounding", default=5, description="Rounding Factor for Inputs"
 144     )
 145
 146     def draw(self, context):
 147         layout = self.layout
 148
 149         box = layout.box()
 150         row1 = box.row()
 151         row2 = box.row()
 152         row1.prop(self, "debug")
 153         row2.prop(self, "pdt_ui_width")
 154         row2.prop(self, "pdt_input_round")
 155
 156
 157 def enumlist_objects(self, context):
 158     """Populate Objects List from Parts Library.
 159
 160     Creates list of objects that optionally have search string contained in them
 161     to populate variable pdt_lib_objects enumerator.
 162
 163     Args:
 164         context: Blender bpy.context instance.
 165
 166     Returns:
 167         list of Object Names.
 168     """
 169
 170     scene = context.scene
 171     pg = scene.pdt_pg
 172     file_path = pg.pdt_library_path
 173     path = Path(bpy.path.abspath(file_path))
 174     _pdt_obj_items.clear()
 175
 176     if path.is_file() and ".blend" in str(path):
 177         with bpy.data.libraries.load(str(path)) as (data_from, _):
 178             if len(pg.object_search_string) == 0:
 179                 object_names = [obj for obj in data_from.objects]
 180             else:
 181                 object_names = [obj for obj in data_from.objects if pg.object_search_string in obj]
 182         for object_name in object_names:
 183             _pdt_obj_items.append((object_name, object_name, ""))
 184     else:
 185         _pdt_obj_items.append(("MISSING", "Library Not Set", ""))
 186     return _pdt_obj_items
 187
 188
 189 def enumlist_collections(self, context):
 190     """Populate Collections List from Parts Library.
 191
 192     Creates list of collections that optionally have search string contained in them
 193     to populate variable pg.lib_collections enumerator
 194
 195     Args:
 196         context: Blender bpy.context instance.
 197
 198     Returns:
 199         list of Collections Names.
 200     """
 201
 202     scene = context.scene
 203     pg = scene.pdt_pg
 204     file_path = pg.pdt_library_path
 205     path = Path(bpy.path.abspath(file_path))
 206     _pdt_col_items.clear()
 207
 208     if path.is_file() and ".blend" in str(path):
 209         with bpy.data.libraries.load(str(path)) as (data_from, _):
 210             if len(pg.collection_search_string) == 0:
 211                 object_names = [obj for obj in data_from.collections]
 212             else:
 213                 object_names = [
 214                     obj for obj in data_from.collections if pg.collection_search_string in obj
 215                 ]
 216         for object_name in object_names:
 217             _pdt_col_items.append((object_name, object_name, ""))
 218     else:
 219         _pdt_col_items.append(("MISSING", "Library Not Set", ""))
 220     return _pdt_col_items
 221
 222
 223 def enumlist_materials(self, context):
 224     """Populate Materials List from Parts Library.
 225
 226     Creates list of materials that optionally have search string contained in them
 227     to populate variable pg.lib_materials enumerator.
 228
 229     Args:
 230         context: Blender bpy.context instance.
 231
 232     Returns:
 233         list of Object Names.
 234     """
 235
 236     scene = context.scene
 237     pg = scene.pdt_pg
 238     file_path = pg.pdt_library_path
 239     path = Path(bpy.path.abspath(file_path))
 240     _pdt_mat_items.clear()
 241
 242     if path.is_file() and ".blend" in str(path):
 243         with bpy.data.libraries.load(str(path)) as (data_from, _):
 244             if len(pg.material_search_string) == 0:
 245                 object_names = [obj for obj in data_from.materials]
 246             else:
 247                 object_names = [
 248                     obj for obj in data_from.materials if pg.material_search_string in obj
 249                 ]
 250         for object_name in object_names:
 251             _pdt_mat_items.append((object_name, object_name, ""))
 252     else:
 253         _pdt_mat_items.append(("MISSING", "Library Not Set", ""))
 254     return _pdt_mat_items
 255
 256
 257 class PDTSceneProperties(PropertyGroup):
 258     """Contains all PDT related properties."""
 259
 260     pdt_library_path: StringProperty(
 261         name="Library",
 262         default="",
 263         description="Parts Library File",
 264         maxlen=1024,
 265         subtype="FILE_PATH",
 266     )
 267
 268     object_search_string: StringProperty(name="Search", default="", description=PDT_DES_LIBSER)
 269     collection_search_string: StringProperty(name="Search", default="", description=PDT_DES_LIBSER)
 270     material_search_string: StringProperty(name="Search", default="", description=PDT_DES_LIBSER)
 271
 272     cartesian_coords: FloatVectorProperty(
 273         name="Coords", default=(0.0, 0.0, 0.0), subtype="XYZ", description=PDT_DES_COORDS
 274     )
 275     distance: FloatProperty(
 276         name="Distance", default=0.0, precision=5, description=PDT_DES_OFFDIS, unit="LENGTH"
 277     )
 278     angle: FloatProperty(
 279         name="Angle", min=-180, max=180, default=0.0, precision=5, description=PDT_DES_OFFANG
 280     )
 281     percent: FloatProperty(name="Percent", default=0.0, precision=5, description=PDT_DES_OFFPER)
 282     plane: EnumProperty(
 283         items=(
 284             ("XZ", "Front(X-Z)", "Use X-Z Plane"),
 285             ("XY", "Top(X-Y)", "Use X-Y Plane"),
 286             ("YZ", "Right(Y-Z)", "Use Y-Z Plane"),
 287             ("LO", "View", "Use View Plane"),
 288         ),
 289         name="Working Plane",
 290         default="XZ",
 291         description=PDT_DES_WORPLANE,
 292     )
 293     select: EnumProperty(
 294         items=(
 295             ("REL", "Current Pos.", "Move Relative to Current Position"),
 296             (
 297                 "SEL",
 298                 "Selected Entities",
 299                 "Move Relative to Selected Object or Vertex (Cursor & Pivot Only)",
 300             ),
 301         ),
 302         name="Move Mode",
 303         default="SEL",
 304         description=PDT_DES_MOVESEL,
 305     )
 306     operation: EnumProperty(
 307         items=(
 308             ("CU", "Move Cursor", "This function will Move the Cursor"),
 309             ("PP", "Move Pivot Point", "This function will Move the Pivot Point"),
 310             ("MV", "Move Entities", "This function will Move selected Vertices or Objects"),
 311             ("NV", "Add New Vertex", "This function will Add a New Vertex"),
 312             (
 313                 "EV",
 314                 "Extrude Vertex/Vertices",
 315                 "This function will Extrude Vertex/Vertices Only in EDIT Mode",
 316             ),
 317             ("SE", "Split Edges", "This function will Split Edges Only in EDIT Mode"),
 318             (
 319                 "DG",
 320                 "Duplicate Geometry",
 321                 "This function will Duplicate Geometry in EDIT Mode (Delta & Direction Only)",
 322             ),
 323             (
 324                 "EG",
 325                 "Extrude Geometry",
 326                 "This function will Extrude Geometry in EDIT Mode (Delta & Direction Only)",
 327             ),
 328         ),
 329         name="Operation",
 330         default="CU",
 331         description=PDT_DES_OPMODE,
 332     )
 333     taper: EnumProperty(
 334         items=(
 335             ("RX-MY", "RotX-MovY", "Rotate X - Move Y"),
 336             ("RX-MZ", "RotX-MovZ", "Rotate X - Move Z"),
 337             ("RY-MX", "RotY-MovX", "Rotate Y - Move X"),
 338             ("RY-MZ", "RotY-MovZ", "Rotate Y - Move Z"),
 339             ("RZ-MX", "RotZ-MovX", "Rotate Z - Move X"),
 340             ("RZ-MY", "RotZ-MovY", "Rotate Z - Move Y"),
 341         ),
 342         name="Axes",
 343         default="RX-MY",
 344         description=PDT_DES_ROTMOVAX,
 345     )
 346
 347     flip_angle: BoolProperty(name="Flip Angle", default=False, description=PDT_DES_FLIPANG)
 348     flip_percent: BoolProperty(name="Flip %", default=False, description=PDT_DES_FLIPPER)
 349
 350     extend: BoolProperty(name="Trim/Extend All", default=False, description=PDT_DES_TRIM)
 351
 352     lib_objects: EnumProperty(items=enumlist_objects, name="Objects", description=PDT_DES_LIBOBS)
 353     lib_collections: EnumProperty(
 354         items=enumlist_collections, name="Collections", description=PDT_DES_LIBCOLS
 355     )
 356     lib_materials: EnumProperty(
 357         items=enumlist_materials, name="Materials", description=PDT_DES_LIBMATS
 358     )
 359     lib_mode: EnumProperty(
 360         items=(
 361             ("OBJECTS", "Objects", "Use Objects"),
 362             ("COLLECTIONS", "Collections", "Use Collections"),
 363             ("MATERIALS", "Materials", "Use Materials"),
 364         ),
 365         name="Mode",
 366         default="OBJECTS",
 367         description=PDT_DES_LIBMODE,
 368     )
 369
 370     rotation_coords: FloatVectorProperty(
 371         name="Rotation", default=(0.0, 0.0, 0.0), subtype="XYZ", description="Rotation Coordinates"
 372     )
 373
 374     object_order: EnumProperty(
 375         items=(
 376             ("1,2,3,4", "1,2,3,4", "Objects 1 & 2 are First Line"),
 377             ("1,3,2,4", "1,3,2,4", "Objects 1 & 3 are First Line"),
 378             ("1,4,2,3", "1,4,2,3", "Objects 1 & 4 are First Line"),
 379         ),
 380         name="Order",
 381         default="1,2,3,4",
 382         description=PDT_DES_OBORDER,
 383     )
 384     vrotangle: FloatProperty(name="View Rotate Angle", default=10, max=180, min=-180)
 385     command: StringProperty(
 386         name="Command", default="CA0,0,0", update=command_run, description=PDT_DES_VALIDLET,
 387     )
 388     maths_output: FloatProperty(
 389         name="Maths output", default=0, description=PDT_DES_OUTPUT,
 390     )
 391     error: StringProperty(name="Error", default="")
 392
 393     # Was pivot* -- is now pivot_*
 394     pivot_loc: FloatVectorProperty(
 395         name="Pivot Location", default=(0.0, 0.0, 0.0), subtype="XYZ", description=PDT_DES_PPLOC,
 396     )
 397     pivot_scale: FloatVectorProperty(
 398         name="Pivot Scale", default=(1.0, 1.0, 1.0), subtype="XYZ", description=PDT_DES_PPSCALEFAC
 399     )
 400     pivot_size: FloatProperty(
 401         name="Pivot Factor", min=0.4, max=10, default=2, precision=1, description=PDT_DES_PPSIZE
 402     )
 403     pivot_width: IntProperty(name="Width", min=1, max=5, default=2, description=PDT_DES_PPWIDTH)
 404
 405     pivot_ang: FloatProperty(name="Pivot Angle", min=-180, max=180, default=0.0)
 406
 407     pivot_dis: FloatProperty(
 408         name="Pivot Dist", default=0.0, min=0, update=scale_set, description=PDT_DES_PIVOTDIS,
 409     )
 410     pivot_alpha: FloatProperty(
 411         name="Alpha", min=0.2, max=1, default=0.6, precision=1, description=PDT_DES_PPTRANS,
 412     )
 413     pivot_show: BoolProperty()
 414
 415     # Was filletrad
 416     fillet_radius: FloatProperty(
 417         name="Fillet Radius", min=0.0, default=1.0, unit="LENGTH", description=PDT_DES_FILLETRAD
 418     )
 419     # Was filletnum
 420     fillet_segments: IntProperty(
 421         name="Fillet Segments", min=1, default=4, description=PDT_DES_FILLETSEG
 422     )
 423     # Was filletpro
 424     fillet_profile: FloatProperty(
 425         name="Fillet Profile", min=0.0, max=1.0, default=0.5, description=PDT_DES_FILLETPROF
 426     )
 427     # Was filletbool
 428     fillet_vertices_only: BoolProperty(
 429         name="Fillet Vertices Only", default=True, description=PDT_DES_FILLETVERTS,
 430     )
 431     fillet_intersect: BoolProperty(
 432         name="Intersect", default=False, description=PDT_DES_FILLINT,
 433     )
 434     tangent_point0: FloatVectorProperty(
 435         name="Coordst1", default=(0.0, 0.0, 0.0), subtype="XYZ", description=PDT_DES_TANCEN1
 436     )
 437     tangent_point1: FloatVectorProperty(
 438         name="Coordst2", default=(0.0, 0.0, 0.0), subtype="XYZ", description=PDT_DES_TANCEN2
 439     )
 440     tangent_radius0: FloatProperty(
 441         name="Arc Radius 1", min=0.00001,  default=1, unit="LENGTH", description=PDT_DES_RADIUS1
 442     )
 443     tangent_radius1: FloatProperty(
 444         name="Arc Radius 2", min=0.00001, default=1, unit="LENGTH", description=PDT_DES_RADIUS2
 445     )
 446     tangent_point2: FloatVectorProperty(
 447         name="Coordst3", default=(0.0, 0.0, 0.0), subtype="XYZ", description=PDT_DES_TANCEN3
 448     )
 449     menu_expand: BoolProperty(
 450         name="Expand", default=False, description=PDT_DES_EXPCOLL,
 451     )
 452     tangent_mode: EnumProperty(
 453         items=(
 454             ("inner", "Inner", "Inner Tangents"),
 455             ("outer", "Outer", "Outer Tangents"),
 456             ("both", "Inner & Outer", "Inner & Outer Tangents"),
 457             ("point", "From Point", "Tangents from Point"),
 458         ),
 459         name="Working Plane",
 460         default="both",
 461         description=PDT_DES_TANMODE,
 462     )
 463
 464     # For Trig Waves
 465     trig_type : EnumProperty(
 466         items=(
 467             ("sin", "Sine", "Sine Wave"),
 468             ("cos", "Cosine", "Cosine Wave"),
 469             ("tan", "Tangent", "Tangent Wave"),
 470         ),
 471         name="Wave Form",
 472         default="sin",
 473         description="Trig. Wave Form",
 474     )
 475     trig_cycles : IntProperty(name="Cycles #", default=1, min=1,
 476         description="1 Cycle = 180 Degrees")
 477     trig_amp : FloatProperty(name="Amplitude", default=1, min=0.01,
 478         description="Maximum Height of 1 Cycle (forms Basis for Tangents)")
 479     trig_len : FloatProperty(name="Cycle Length", default=2, min=0.02,
 480         description="Length in Blender Units of 1 Cycle")
 481     trig_obj : PointerProperty(name="Object", type=Object)
 482     trig_del : BoolProperty(name="Empty Object", default=False,
 483         description="Delete ALL Vertices in Object First")
 484     trig_res : IntProperty(name="Resolution", default=18, min=4, max=72,
 485         description="Number of Vertices per Cycle (180 Degrees)")
 486     trig_tanmax : FloatProperty(name="Tangent Max", default=10, min=0.1,
 487         description="Maximum Permitted Tangent Value")
 488     trig_off : FloatVectorProperty(name="Start Location", default=(0,0,0),
 489         description="Location in World Space for Origin of Wave")
 490     trig_abs : BoolProperty(name="Absolute", default=False,
 491         description="Use Absolute Values Only")
 492
 493
 494 # List of All Classes in the Add-on to register
 495 #
 496 # Due to the way PropertyGroups work, this needs to be listed/loaded first
 497 # (and unloaded last)
 498 #
 499 classes = (
 500     PDTPreferences,
 501     PDTSceneProperties,
 502     pdt_bix.PDT_OT_LineOnBisection,
 503     pdt_command.PDT_OT_CommandReRun,
 504     pdt_design.PDT_OT_PlacementAbs,
 505     pdt_design.PDT_OT_PlacementDelta,
 506     pdt_design.PDT_OT_PlacementDis,
 507     pdt_design.PDT_OT_PlacementView,
 508     pdt_design.PDT_OT_PlacementCen,
 509     pdt_design.PDT_OT_PlacementPer,
 510     pdt_design.PDT_OT_PlacementNormal,
 511     pdt_design.PDT_OT_PlacementInt,
 512     pdt_design.PDT_OT_JoinVerts,
 513     pdt_design.PDT_OT_Angle2,
 514     pdt_design.PDT_OT_Angle3,
 515     pdt_design.PDT_OT_Origin,
 516     pdt_design.PDT_OT_Taper,
 517     pdt_design.PDT_OT_Fillet,
 518     pdt_etof.PDT_OT_EdgeToFace,
 519     pdt_library.PDT_OT_Append,
 520     pdt_library.PDT_OT_Link,
 521     pdt_library.PDT_OT_LibShow,
 522     pdt_menus.PDT_PT_PanelDesign,
 523     pdt_menus.PDT_PT_PanelTools,
 524     pdt_menus.PDT_PT_PanelTangent,
 525     pdt_menus.PDT_PT_PanelCommandLine,
 526     pdt_menus.PDT_PT_PanelViewControl,
 527     pdt_menus.PDT_PT_PanelPivotPoint,
 528     pdt_menus.PDT_PT_PanelPartsLibrary,
 529     pdt_menus.PDT_PT_PanelTrig,
 530     pdt_pivot_point.PDT_OT_ModalDrawOperator,
 531     pdt_pivot_point.PDT_OT_ViewPlaneRotate,
 532     pdt_pivot_point.PDT_OT_ViewPlaneScale,
 533     pdt_pivot_point.PDT_OT_PivotToCursor,
 534     pdt_pivot_point.PDT_OT_CursorToPivot,
 535     pdt_pivot_point.PDT_OT_PivotSelected,
 536     pdt_pivot_point.PDT_OT_PivotOrigin,
 537     pdt_pivot_point.PDT_OT_PivotWrite,
 538     pdt_pivot_point.PDT_OT_PivotRead,
 539     pdt_tangent.PDT_OT_TangentOperate,
 540     pdt_tangent.PDT_OT_TangentOperateSel,
 541     pdt_tangent.PDT_OT_TangentSet1,
 542     pdt_tangent.PDT_OT_TangentSet2,
 543     pdt_tangent.PDT_OT_TangentSet3,
 544     pdt_tangent.PDT_OT_TangentSet4,
 545     pdt_tangent.PDT_OT_TangentExpandMenu,
 546     pdt_trig_waves.PDT_OT_WaveGenerator,
 547     pdt_view.PDT_OT_ViewRot,
 548     pdt_view.PDT_OT_ViewRotL,
 549     pdt_view.PDT_OT_ViewRotR,
 550     pdt_view.PDT_OT_ViewRotU,
 551     pdt_view.PDT_OT_ViewRotD,
 552     pdt_view.PDT_OT_ViewRoll,
 553     pdt_view.PDT_OT_ViewIso,
 554     pdt_view.PDT_OT_Reset3DView,
 555     pdt_xall.PDT_OT_IntersectAllEdges,
 556 )
 557
 558
 559 def register():
 560     """Register Classes and Create Scene Variables.
 561
 562     Operates on the classes list defined above.
 563     """
 564
 565     from bpy.utils import register_class
 566
 567     for cls in classes:
 568         register_class(cls)
 569
 570     # OpenGL flag
 571     #
 572     window_manager = WindowManager
 573     # Register Internal OpenGL Property
 574     #
 575     window_manager.pdt_run_opengl = BoolProperty(default=False)
 576
 577     Scene.pdt_pg = PointerProperty(type=PDTSceneProperties)
 578
 579
 580 def unregister():
 581     """Unregister Classes and Delete Scene Variables.
 582
 583     Operates on the classes list defined above.
 584     """
 585
 586     from bpy.utils import unregister_class
 587
 588     # remove OpenGL data
 589     pdt_pivot_point.PDT_OT_ModalDrawOperator.handle_remove(
 590         pdt_pivot_point.PDT_OT_ModalDrawOperator, bpy.context
 591     )
 592     window_manager = bpy.context.window_manager
 593     pdt_wm = "pdt_run_opengl"
 594     if pdt_wm in window_manager:
 595         del window_manager[pdt_wm]
 596
 597     for cls in reversed(classes):
 598         unregister_class(cls)
 599
 600     del Scene.pdt_pg
 601
 602
 603 if __name__ == "__main__":
 604     register()