precision_drawing_tools/__init__.py

   1 # SPDX-FileCopyrightText: 2019-2022 Alan Odom (Clockmender)
   2 # SPDX-FileCopyrightText: 2019-2022 Rune Morling (ermo)
   3 #
   4 # SPDX-License-Identifier: GPL-2.0-or-later
   5
   6 # ----------------------------------------------
   7 # Define Addon info
   8 # ----------------------------------------------
   9 #
  10 bl_info = {
  11     "name": "Precision Drawing Tools (PDT)",
  12     "author": "Alan Odom (Clockmender), Rune Morling (ermo)",
  13     "version": (1, 5, 3),
  14     "blender": (3, 0, 0),
  15     "location": "View3D > UI > PDT",
  16     "description": "Precision Drawing Tools for Accurate Modelling",
  17     "warning": "",
  18     "doc_url": "{BLENDER_MANUAL_URL}/addons/3d_view/precision_drawing_tools/index.html",
  19     "category": "3D View",
  20 }
  21
  22
  23 # ----------------------------------------------
  24 # Import modules
  25 # ----------------------------------------------
  26 if "bpy" in locals():
  27     import importlib
  28
  29     importlib.reload(pdt_design)
  30     importlib.reload(pdt_pivot_point)
  31     importlib.reload(pdt_menus)
  32     importlib.reload(pdt_library)
  33     importlib.reload(pdt_view)
  34     importlib.reload(pdt_xall)
  35     importlib.reload(pdt_bix)
  36     importlib.reload(pdt_etof)
  37     importlib.reload(pdt_tangent)
  38     importlib.reload(pdt_trig_waves)
  39 else:
  40     from . import pdt_design
  41     from . import pdt_pivot_point
  42     from . import pdt_menus
  43     from . import pdt_library
  44     from . import pdt_view
  45     from . import pdt_xall
  46     from . import pdt_bix
  47     from . import pdt_etof
  48     from . import pdt_tangent
  49     from . import pdt_trig_waves
  50
  51 import bpy
  52 import os
  53 from pathlib import Path
  54 from bpy.types import (
  55     AddonPreferences,
  56     PropertyGroup, Scene,
  57     WindowManager,
  58     Object,
  59 )
  60 from bpy.props import (
  61     BoolProperty,
  62     CollectionProperty,
  63     EnumProperty,
  64     FloatProperty,
  65     FloatVectorProperty,
  66     IntProperty,
  67     PointerProperty,
  68     StringProperty,
  69 )
  70 from .pdt_msg_strings import (
  71     PDT_DES_COORDS,
  72     PDT_DES_FILLETPROF,
  73     PDT_DES_FILLETRAD,
  74     PDT_DES_FILLETSEG,
  75     PDT_DES_FILLETVERTS,
  76     PDT_DES_FILLINT,
  77     PDT_DES_FLIPANG,
  78     PDT_DES_FLIPPER,
  79     PDT_DES_LIBCOLS,
  80     PDT_DES_LIBMATS,
  81     PDT_DES_LIBMODE,
  82     PDT_DES_LIBOBS,
  83     PDT_DES_LIBSER,
  84     PDT_DES_MOVESEL,
  85     PDT_DES_OBORDER,
  86     PDT_DES_OFFANG,
  87     PDT_DES_OFFDIS,
  88     PDT_DES_OFFPER,
  89     PDT_DES_OPMODE,
  90     PDT_DES_OUTPUT,
  91     PDT_DES_PIVOTDIS,
  92     PDT_DES_PPLOC,
  93     PDT_DES_PPSCALEFAC,
  94     PDT_DES_PPSIZE,
  95     PDT_DES_PPTRANS,
  96     PDT_DES_PPWIDTH,
  97     PDT_DES_ROTMOVAX,
  98     PDT_DES_TRIM,
  99     PDT_DES_VALIDLET,
 100     PDT_DES_WORPLANE,
 101     PDT_DES_TANCEN1,
 102     PDT_DES_TANCEN2,
 103     PDT_DES_TANCEN3,
 104     PDT_DES_RADIUS1,
 105     PDT_DES_RADIUS2,
 106     PDT_DES_TPOINT,
 107     PDT_DES_EXPCOLL,
 108     PDT_DES_TANMODE,
 109 )
 110 from .pdt_command import command_run
 111 from .pdt_functions import scale_set
 112
 113
 114 # Declare enum items variables
 115 #
 116 _pdt_obj_items = []
 117 _pdt_col_items = []
 118 _pdt_mat_items = []
 119
 120
 121 class PDTPreferences(AddonPreferences):
 122     # This must match the addon name, use '__package__'
 123     # when defining this in a submodule of a python package.
 124
 125     bl_idname = __name__
 126
 127     debug: BoolProperty(
 128         name="Enable console debug output from PDT scripts",
 129         default=False,
 130         description="NOTE: Does not enable debugging globally in Blender (only in PDT scripts)",
 131     )
 132
 133     pdt_ui_width: IntProperty(
 134         name="UI Width Cut-off",
 135         default=350,
 136         description="Cutoff width for shrinking items per line in menus",
 137     )
 138
 139     pdt_input_round: IntProperty(
 140         name="Input Rounding", default=5, description="Rounding Factor for Inputs"
 141     )
 142
 143     def draw(self, context):
 144         layout = self.layout
 145
 146         box = layout.box()
 147         row1 = box.row()
 148         row2 = box.row()
 149         row1.prop(self, "debug")
 150         row2.prop(self, "pdt_ui_width")
 151         row2.prop(self, "pdt_input_round")
 152
 153
 154 def enumlist_objects(self, context):
 155     """Populate Objects List from Parts Library.
 156
 157     Creates list of objects that optionally have search string contained in them
 158     to populate variable pdt_lib_objects enumerator.
 159
 160     Args:
 161         context: Blender bpy.context instance.
 162
 163     Returns:
 164         list of Object Names.
 165     """
 166
 167     scene = context.scene
 168     pg = scene.pdt_pg
 169     file_path = pg.pdt_library_path
 170     path = Path(bpy.path.abspath(file_path))
 171     _pdt_obj_items.clear()
 172
 173     if path.is_file() and ".blend" in str(path):
 174         with bpy.data.libraries.load(str(path)) as (data_from, _):
 175             if len(pg.object_search_string) == 0:
 176                 object_names = [obj for obj in data_from.objects]
 177             else:
 178                 object_names = [obj for obj in data_from.objects if pg.object_search_string in obj]
 179         for object_name in object_names:
 180             _pdt_obj_items.append((object_name, object_name, ""))
 181     else:
 182         _pdt_obj_items.append(("MISSING", "Library Not Set", ""))
 183     return _pdt_obj_items
 184
 185
 186 def enumlist_collections(self, context):
 187     """Populate Collections List from Parts Library.
 188
 189     Creates list of collections that optionally have search string contained in them
 190     to populate variable pg.lib_collections enumerator
 191
 192     Args:
 193         context: Blender bpy.context instance.
 194
 195     Returns:
 196         list of Collections Names.
 197     """
 198
 199     scene = context.scene
 200     pg = scene.pdt_pg
 201     file_path = pg.pdt_library_path
 202     path = Path(bpy.path.abspath(file_path))
 203     _pdt_col_items.clear()
 204
 205     if path.is_file() and ".blend" in str(path):
 206         with bpy.data.libraries.load(str(path)) as (data_from, _):
 207             if len(pg.collection_search_string) == 0:
 208                 object_names = [obj for obj in data_from.collections]
 209             else:
 210                 object_names = [
 211                     obj for obj in data_from.collections if pg.collection_search_string in obj
 212                 ]
 213         for object_name in object_names:
 214             _pdt_col_items.append((object_name, object_name, ""))
 215     else:
 216         _pdt_col_items.append(("MISSING", "Library Not Set", ""))
 217     return _pdt_col_items
 218
 219
 220 def enumlist_materials(self, context):
 221     """Populate Materials List from Parts Library.
 222
 223     Creates list of materials that optionally have search string contained in them
 224     to populate variable pg.lib_materials enumerator.
 225
 226     Args:
 227         context: Blender bpy.context instance.
 228
 229     Returns:
 230         list of Object Names.
 231     """
 232
 233     scene = context.scene
 234     pg = scene.pdt_pg
 235     file_path = pg.pdt_library_path
 236     path = Path(bpy.path.abspath(file_path))
 237     _pdt_mat_items.clear()
 238
 239     if path.is_file() and ".blend" in str(path):
 240         with bpy.data.libraries.load(str(path)) as (data_from, _):
 241             if len(pg.material_search_string) == 0:
 242                 object_names = [obj for obj in data_from.materials]
 243             else:
 244                 object_names = [
 245                     obj for obj in data_from.materials if pg.material_search_string in obj
 246                 ]
 247         for object_name in object_names:
 248             _pdt_mat_items.append((object_name, object_name, ""))
 249     else:
 250         _pdt_mat_items.append(("MISSING", "Library Not Set", ""))
 251     return _pdt_mat_items
 252
 253
 254 class PDTSceneProperties(PropertyGroup):
 255     """Contains all PDT related properties."""
 256
 257     pdt_library_path: StringProperty(
 258         name="Library",
 259         default="",
 260         description="Parts Library File",
 261         maxlen=1024,
 262         subtype="FILE_PATH",
 263     )
 264
 265     object_search_string: StringProperty(name="Search", default="", description=PDT_DES_LIBSER)
 266     collection_search_string: StringProperty(name="Search", default="", description=PDT_DES_LIBSER)
 267     material_search_string: StringProperty(name="Search", default="", description=PDT_DES_LIBSER)
 268
 269     cartesian_coords: FloatVectorProperty(
 270         name="Coords", default=(0.0, 0.0, 0.0), subtype="XYZ", description=PDT_DES_COORDS
 271     )
 272     distance: FloatProperty(
 273         name="Distance", default=0.0, precision=5, description=PDT_DES_OFFDIS, unit="LENGTH"
 274     )
 275     angle: FloatProperty(
 276         name="Angle", min=-180, max=180, default=0.0, precision=5, description=PDT_DES_OFFANG
 277     )
 278     percent: FloatProperty(name="Percent", default=0.0, precision=5, description=PDT_DES_OFFPER)
 279     plane: EnumProperty(
 280         items=(
 281             ("XZ", "Front(X-Z)", "Use X-Z Plane"),
 282             ("XY", "Top(X-Y)", "Use X-Y Plane"),
 283             ("YZ", "Right(Y-Z)", "Use Y-Z Plane"),
 284             ("LO", "View", "Use View Plane"),
 285         ),
 286         name="Working Plane",
 287         default="XZ",
 288         description=PDT_DES_WORPLANE,
 289     )
 290     select: EnumProperty(
 291         items=(
 292             ("REL", "Current Pos.", "Move Relative to Current Position"),
 293             (
 294                 "SEL",
 295                 "Selected Entities",
 296                 "Move Relative to Selected Object or Vertex (Cursor & Pivot Only)",
 297             ),
 298         ),
 299         name="Move Mode",
 300         default="SEL",
 301         description=PDT_DES_MOVESEL,
 302     )
 303     operation: EnumProperty(
 304         items=(
 305             ("CU", "Move Cursor", "This function will Move the Cursor"),
 306             ("PP", "Move Pivot Point", "This function will Move the Pivot Point"),
 307             ("MV", "Move Entities", "This function will Move selected Vertices or Objects"),
 308             ("NV", "Add New Vertex", "This function will Add a New Vertex"),
 309             (
 310                 "EV",
 311                 "Extrude Vertex/Vertices",
 312                 "This function will Extrude Vertex/Vertices Only in EDIT Mode",
 313             ),
 314             ("SE", "Split Edges", "This function will Split Edges Only in EDIT Mode"),
 315             (
 316                 "DG",
 317                 "Duplicate Geometry",
 318                 "This function will Duplicate Geometry in EDIT Mode (Delta & Direction Only)",
 319             ),
 320             (
 321                 "EG",
 322                 "Extrude Geometry",
 323                 "This function will Extrude Geometry in EDIT Mode (Delta & Direction Only)",
 324             ),
 325         ),
 326         name="Operation",
 327         default="CU",
 328         description=PDT_DES_OPMODE,
 329     )
 330     taper: EnumProperty(
 331         items=(
 332             ("RX-MY", "RotX-MovY", "Rotate X - Move Y"),
 333             ("RX-MZ", "RotX-MovZ", "Rotate X - Move Z"),
 334             ("RY-MX", "RotY-MovX", "Rotate Y - Move X"),
 335             ("RY-MZ", "RotY-MovZ", "Rotate Y - Move Z"),
 336             ("RZ-MX", "RotZ-MovX", "Rotate Z - Move X"),
 337             ("RZ-MY", "RotZ-MovY", "Rotate Z - Move Y"),
 338         ),
 339         name="Axes",
 340         default="RX-MY",
 341         description=PDT_DES_ROTMOVAX,
 342     )
 343
 344     flip_angle: BoolProperty(name="Flip Angle", default=False, description=PDT_DES_FLIPANG)
 345     flip_percent: BoolProperty(name="Flip %", default=False, description=PDT_DES_FLIPPER)
 346
 347     extend: BoolProperty(name="Trim/Extend All", default=False, description=PDT_DES_TRIM)
 348
 349     lib_objects: EnumProperty(items=enumlist_objects, name="Objects", description=PDT_DES_LIBOBS)
 350     lib_collections: EnumProperty(
 351         items=enumlist_collections, name="Collections", description=PDT_DES_LIBCOLS
 352     )
 353     lib_materials: EnumProperty(
 354         items=enumlist_materials, name="Materials", description=PDT_DES_LIBMATS
 355     )
 356     lib_mode: EnumProperty(
 357         items=(
 358             ("OBJECTS", "Objects", "Use Objects"),
 359             ("COLLECTIONS", "Collections", "Use Collections"),
 360             ("MATERIALS", "Materials", "Use Materials"),
 361         ),
 362         name="Mode",
 363         default="OBJECTS",
 364         description=PDT_DES_LIBMODE,
 365     )
 366
 367     rotation_coords: FloatVectorProperty(
 368         name="Rotation", default=(0.0, 0.0, 0.0), subtype="XYZ", description="Rotation Coordinates"
 369     )
 370
 371     object_order: EnumProperty(
 372         items=(
 373             ("1,2,3,4", "1,2,3,4", "Objects 1 & 2 are First Line"),
 374             ("1,3,2,4", "1,3,2,4", "Objects 1 & 3 are First Line"),
 375             ("1,4,2,3", "1,4,2,3", "Objects 1 & 4 are First Line"),
 376         ),
 377         name="Order",
 378         default="1,2,3,4",
 379         description=PDT_DES_OBORDER,
 380     )
 381     vrotangle: FloatProperty(name="View Rotate Angle", default=10, max=180, min=-180)
 382     command: StringProperty(
 383         name="Command", default="CA0,0,0", update=command_run, description=PDT_DES_VALIDLET,
 384     )
 385     maths_output: FloatProperty(
 386         name="Maths output", default=0, description=PDT_DES_OUTPUT,
 387     )
 388     error: StringProperty(name="Error", default="")
 389
 390     # Was pivot* -- is now pivot_*
 391     pivot_loc: FloatVectorProperty(
 392         name="Pivot Location", default=(0.0, 0.0, 0.0), subtype="XYZ", description=PDT_DES_PPLOC,
 393     )
 394     pivot_scale: FloatVectorProperty(
 395         name="Pivot Scale", default=(1.0, 1.0, 1.0), subtype="XYZ", description=PDT_DES_PPSCALEFAC
 396     )
 397     pivot_size: FloatProperty(
 398         name="Pivot Factor", min=0.4, max=10, default=2, precision=1, description=PDT_DES_PPSIZE
 399     )
 400     pivot_width: IntProperty(name="Width", min=1, max=5, default=2, description=PDT_DES_PPWIDTH)
 401
 402     pivot_ang: FloatProperty(name="Pivot Angle", min=-180, max=180, default=0.0)
 403
 404     pivot_dis: FloatProperty(
 405         name="Pivot Dist", default=0.0, min=0, update=scale_set, description=PDT_DES_PIVOTDIS,
 406     )
 407     pivot_alpha: FloatProperty(
 408         name="Alpha", min=0.2, max=1, default=0.6, precision=1, description=PDT_DES_PPTRANS,
 409     )
 410     pivot_show: BoolProperty()
 411
 412     # Was filletrad
 413     fillet_radius: FloatProperty(
 414         name="Fillet Radius", min=0.0, default=1.0, unit="LENGTH", description=PDT_DES_FILLETRAD
 415     )
 416     # Was filletnum
 417     fillet_segments: IntProperty(
 418         name="Fillet Segments", min=1, default=4, description=PDT_DES_FILLETSEG
 419     )
 420     # Was filletpro
 421     fillet_profile: FloatProperty(
 422         name="Fillet Profile", min=0.0, max=1.0, default=0.5, description=PDT_DES_FILLETPROF
 423     )
 424     # Was filletbool
 425     fillet_vertices_only: BoolProperty(
 426         name="Fillet Vertices Only", default=True, description=PDT_DES_FILLETVERTS,
 427     )
 428     fillet_intersect: BoolProperty(
 429         name="Intersect", default=False, description=PDT_DES_FILLINT,
 430     )
 431     tangent_point0: FloatVectorProperty(
 432         name="Coordst1", default=(0.0, 0.0, 0.0), subtype="XYZ", description=PDT_DES_TANCEN1
 433     )
 434     tangent_point1: FloatVectorProperty(
 435         name="Coordst2", default=(0.0, 0.0, 0.0), subtype="XYZ", description=PDT_DES_TANCEN2
 436     )
 437     tangent_radius0: FloatProperty(
 438         name="Arc Radius 1", min=0.00001,  default=1, unit="LENGTH", description=PDT_DES_RADIUS1
 439     )
 440     tangent_radius1: FloatProperty(
 441         name="Arc Radius 2", min=0.00001, default=1, unit="LENGTH", description=PDT_DES_RADIUS2
 442     )
 443     tangent_point2: FloatVectorProperty(
 444         name="Coordst3", default=(0.0, 0.0, 0.0), subtype="XYZ", description=PDT_DES_TANCEN3
 445     )
 446     menu_expand: BoolProperty(
 447         name="Expand", default=False, description=PDT_DES_EXPCOLL,
 448     )
 449     tangent_mode: EnumProperty(
 450         items=(
 451             ("inner", "Inner", "Inner Tangents"),
 452             ("outer", "Outer", "Outer Tangents"),
 453             ("both", "Inner & Outer", "Inner & Outer Tangents"),
 454             ("point", "From Point", "Tangents from Point"),
 455         ),
 456         name="Working Plane",
 457         default="both",
 458         description=PDT_DES_TANMODE,
 459     )
 460
 461     # For Trig Waves
 462     trig_type : EnumProperty(
 463         items=(
 464             ("sin", "Sine", "Sine Wave"),
 465             ("cos", "Cosine", "Cosine Wave"),
 466             ("tan", "Tangent", "Tangent Wave"),
 467         ),
 468         name="Wave Form",
 469         default="sin",
 470         description="Trig. Wave Form",
 471     )
 472     trig_cycles : IntProperty(name="Cycles #", default=1, min=1,
 473         description="1 Cycle = 180 Degrees")
 474     trig_amp : FloatProperty(name="Amplitude", default=1, min=0.01,
 475         description="Maximum Height of 1 Cycle (forms Basis for Tangents)")
 476     trig_len : FloatProperty(name="Cycle Length", default=2, min=0.02,
 477         description="Length in Blender Units of 1 Cycle")
 478     trig_obj : PointerProperty(name="Object", type=Object)
 479     trig_del : BoolProperty(name="Empty Object", default=False,
 480         description="Delete ALL Vertices in Object First")
 481     trig_res : IntProperty(name="Resolution", default=18, min=4, max=72,
 482         description="Number of Vertices per Cycle (180 Degrees)")
 483     trig_tanmax : FloatProperty(name="Tangent Max", default=10, min=0.1,
 484         description="Maximum Permitted Tangent Value")
 485     trig_off : FloatVectorProperty(name="Start Location", default=(0,0,0),
 486         description="Location in World Space for Origin of Wave")
 487     trig_abs : BoolProperty(name="Absolute", default=False,
 488         description="Use Absolute Values Only")
 489
 490
 491 # List of All Classes in the Add-on to register
 492 #
 493 # Due to the way PropertyGroups work, this needs to be listed/loaded first
 494 # (and unloaded last)
 495 #
 496 classes = (
 497     PDTPreferences,
 498     PDTSceneProperties,
 499     pdt_bix.PDT_OT_LineOnBisection,
 500     pdt_command.PDT_OT_CommandReRun,
 501     pdt_design.PDT_OT_PlacementAbs,
 502     pdt_design.PDT_OT_PlacementDelta,
 503     pdt_design.PDT_OT_PlacementDis,
 504     pdt_design.PDT_OT_PlacementView,
 505     pdt_design.PDT_OT_PlacementCen,
 506     pdt_design.PDT_OT_PlacementPer,
 507     pdt_design.PDT_OT_PlacementNormal,
 508     pdt_design.PDT_OT_PlacementInt,
 509     pdt_design.PDT_OT_JoinVerts,
 510     pdt_design.PDT_OT_Angle2,
 511     pdt_design.PDT_OT_Angle3,
 512     pdt_design.PDT_OT_Origin,
 513     pdt_design.PDT_OT_Taper,
 514     pdt_design.PDT_OT_Fillet,
 515     pdt_etof.PDT_OT_EdgeToFace,
 516     pdt_library.PDT_OT_Append,
 517     pdt_library.PDT_OT_Link,
 518     pdt_library.PDT_OT_LibShow,
 519     pdt_menus.PDT_PT_PanelDesign,
 520     pdt_menus.PDT_PT_PanelTools,
 521     pdt_menus.PDT_PT_PanelTangent,
 522     pdt_menus.PDT_PT_PanelCommandLine,
 523     pdt_menus.PDT_PT_PanelViewControl,
 524     pdt_menus.PDT_PT_PanelPivotPoint,
 525     pdt_menus.PDT_PT_PanelPartsLibrary,
 526     pdt_menus.PDT_PT_PanelTrig,
 527     pdt_pivot_point.PDT_OT_ModalDrawOperator,
 528     pdt_pivot_point.PDT_OT_ViewPlaneRotate,
 529     pdt_pivot_point.PDT_OT_ViewPlaneScale,
 530     pdt_pivot_point.PDT_OT_PivotToCursor,
 531     pdt_pivot_point.PDT_OT_CursorToPivot,
 532     pdt_pivot_point.PDT_OT_PivotSelected,
 533     pdt_pivot_point.PDT_OT_PivotOrigin,
 534     pdt_pivot_point.PDT_OT_PivotWrite,
 535     pdt_pivot_point.PDT_OT_PivotRead,
 536     pdt_tangent.PDT_OT_TangentOperate,
 537     pdt_tangent.PDT_OT_TangentOperateSel,
 538     pdt_tangent.PDT_OT_TangentSet1,
 539     pdt_tangent.PDT_OT_TangentSet2,
 540     pdt_tangent.PDT_OT_TangentSet3,
 541     pdt_tangent.PDT_OT_TangentSet4,
 542     pdt_tangent.PDT_OT_TangentExpandMenu,
 543     pdt_trig_waves.PDT_OT_WaveGenerator,
 544     pdt_view.PDT_OT_ViewRot,
 545     pdt_view.PDT_OT_ViewRotL,
 546     pdt_view.PDT_OT_ViewRotR,
 547     pdt_view.PDT_OT_ViewRotU,
 548     pdt_view.PDT_OT_ViewRotD,
 549     pdt_view.PDT_OT_ViewRoll,
 550     pdt_view.PDT_OT_ViewIso,
 551     pdt_view.PDT_OT_Reset3DView,
 552     pdt_xall.PDT_OT_IntersectAllEdges,
 553 )
 554
 555
 556 def register():
 557     """Register Classes and Create Scene Variables.
 558
 559     Operates on the classes list defined above.
 560     """
 561
 562     from bpy.utils import register_class
 563
 564     for cls in classes:
 565         register_class(cls)
 566
 567     # OpenGL flag
 568     #
 569     window_manager = WindowManager
 570     # Register Internal OpenGL Property
 571     #
 572     window_manager.pdt_run_opengl = BoolProperty(default=False)
 573
 574     Scene.pdt_pg = PointerProperty(type=PDTSceneProperties)
 575
 576
 577 def unregister():
 578     """Unregister Classes and Delete Scene Variables.
 579
 580     Operates on the classes list defined above.
 581     """
 582
 583     from bpy.utils import unregister_class
 584
 585     # remove OpenGL data
 586     pdt_pivot_point.PDT_OT_ModalDrawOperator.handle_remove(
 587         pdt_pivot_point.PDT_OT_ModalDrawOperator, bpy.context
 588     )
 589     window_manager = bpy.context.window_manager
 590     pdt_wm = "pdt_run_opengl"
 591     if pdt_wm in window_manager:
 592         del window_manager[pdt_wm]
 593
 594     for cls in reversed(classes):
 595         unregister_class(cls)
 596
 597     del Scene.pdt_pg
 598
 599
 600 if __name__ == "__main__":
 601     register()