mesh_f2.py

   1 # Updated for 2.8 jan 5 2019
   2
   3 # ##### BEGIN GPL LICENSE BLOCK #####
   4 #
   5 #  This program is free software; you can redistribute it and/or
   6 #  modify it under the terms of the GNU General Public License
   7 #  as published by the Free Software Foundation; either version 2
   8 #  of the License, or (at your option) any later version.
   9 #
  10 #  This program is distributed in the hope that it will be useful,
  11 #  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 #  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 #  GNU General Public License for more details.
  14 #
  15 #  You should have received a copy of the GNU General Public License
  16 #  along with this program; if not, write to the Free Software Foundation,
  17 #  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18 #
  19 # ##### END GPL LICENSE BLOCK #####
  20
  21 # <pep8 compliant>
  22
  23 bl_info = {
  24     "name": "F2",
  25     "author": "Bart Crouch, Alexander Nedovizin, Paul Kotelevets "
  26               "(concept design), Adrian Rutkowski",
  27     "version": (1, 8, 4),
  28     "blender": (2, 80, 0),
  29     "location": "Editmode > F",
  30     "warning": "",
  31     "description": "Extends the 'Make Edge/Face' functionality",
  32     "doc_url": "{BLENDER_MANUAL_URL}/addons/mesh/f2.html",
  33     "category": "Mesh",
  34 }
  35
  36 # ref: https://github.com/Cfyzzz/Other-scripts/blob/master/f2.py
  37
  38 import bmesh
  39 import bpy
  40 import itertools
  41 import mathutils
  42 import math
  43 from mathutils import Vector
  44 from bpy_extras import view3d_utils
  45
  46
  47 # returns a custom data layer of the UV map, or None
  48 def get_uv_layer(ob, bm, mat_index):
  49     uv = None
  50     uv_layer = None
  51     if ob.material_slots:
  52         me = ob.data
  53         if me.uv_layers:
  54             uv = me.uv_layers.active.name
  55     # 'material_slots' is deprecated (Blender Internal)
  56     # else:
  57     #     mat = ob.material_slots[mat_index].material
  58     #     if mat is not None:
  59     #         slot = mat.texture_slots[mat.active_texture_index]
  60     #         if slot and slot.uv_layer:
  61     #             uv = slot.uv_layer
  62     #         else:
  63     #             for tex_slot in mat.texture_slots:
  64     #                 if tex_slot and tex_slot.uv_layer:
  65     #                     uv = tex_slot.uv_layer
  66     #                     break
  67     if uv:
  68         uv_layer = bm.loops.layers.uv.get(uv)
  69
  70     return (uv_layer)
  71
  72
  73 # create a face from a single selected edge
  74 def quad_from_edge(bm, edge_sel, context, event):
  75     addon_prefs = context.preferences.addons[__name__].preferences
  76     ob = context.active_object
  77     region = context.region
  78     region_3d = context.space_data.region_3d
  79
  80     # find linked edges that are open (<2 faces connected) and not part of
  81     # the face the selected edge belongs to
  82     all_edges = [[edge for edge in edge_sel.verts[i].link_edges if \
  83                   len(edge.link_faces) < 2 and edge != edge_sel and \
  84                   sum([face in edge_sel.link_faces for face in edge.link_faces]) == 0] \
  85                  for i in range(2)]
  86     if not all_edges[0] or not all_edges[1]:
  87         return
  88
  89     # determine which edges to use, based on mouse cursor position
  90     mouse_pos = mathutils.Vector([event.mouse_region_x, event.mouse_region_y])
  91     optimal_edges = []
  92     for edges in all_edges:
  93         min_dist = False
  94         for edge in edges:
  95             vert = [vert for vert in edge.verts if not vert.select][0]
  96             world_pos = ob.matrix_world @ vert.co.copy()
  97             screen_pos = view3d_utils.location_3d_to_region_2d(region,
  98                                                                region_3d, world_pos)
  99             dist = (mouse_pos - screen_pos).length
 100             if not min_dist or dist < min_dist[0]:
 101                 min_dist = (dist, edge, vert)
 102         optimal_edges.append(min_dist)
 103
 104     # determine the vertices, which make up the quad
 105     v1 = edge_sel.verts[0]
 106     v2 = edge_sel.verts[1]
 107     edge_1 = optimal_edges[0][1]
 108     edge_2 = optimal_edges[1][1]
 109     v3 = optimal_edges[0][2]
 110     v4 = optimal_edges[1][2]
 111
 112     # normal detection
 113     flip_align = True
 114     normal_edge = edge_1
 115     if not normal_edge.link_faces:
 116         normal_edge = edge_2
 117         if not normal_edge.link_faces:
 118             normal_edge = edge_sel
 119             if not normal_edge.link_faces:
 120                 # no connected faces, so no need to flip the face normal
 121                 flip_align = False
 122     if flip_align:  # there is a face to which the normal can be aligned
 123         ref_verts = [v for v in normal_edge.link_faces[0].verts]
 124         if v3 in ref_verts and v1 in ref_verts:
 125             va_1 = v3
 126             va_2 = v1
 127         elif normal_edge == edge_sel:
 128             va_1 = v1
 129             va_2 = v2
 130         else:
 131             va_1 = v2
 132             va_2 = v4
 133         if (va_1 == ref_verts[0] and va_2 == ref_verts[-1]) or \
 134                 (va_2 == ref_verts[0] and va_1 == ref_verts[-1]):
 135             # reference verts are at start and end of the list -> shift list
 136             ref_verts = ref_verts[1:] + [ref_verts[0]]
 137         if ref_verts.index(va_1) > ref_verts.index(va_2):
 138             # connected face has same normal direction, so don't flip
 139             flip_align = False
 140
 141     # material index detection
 142     ref_faces = edge_sel.link_faces
 143     if not ref_faces:
 144         ref_faces = edge_sel.verts[0].link_faces
 145     if not ref_faces:
 146         ref_faces = edge_sel.verts[1].link_faces
 147     if not ref_faces:
 148         mat_index = False
 149         smooth = False
 150     else:
 151         mat_index = ref_faces[0].material_index
 152         smooth = ref_faces[0].smooth
 153
 154     if addon_prefs.quad_from_e_mat:
 155         mat_index = bpy.context.object.active_material_index
 156
 157     # create quad
 158     try:
 159         if v3 == v4:
 160             # triangle (usually at end of quad-strip
 161             verts = [v3, v1, v2]
 162         else:
 163             # normal face creation
 164             verts = [v3, v1, v2, v4]
 165         if flip_align:
 166             verts.reverse()
 167         face = bm.faces.new(verts)
 168         if mat_index:
 169             face.material_index = mat_index
 170         face.smooth = smooth
 171     except:
 172         # face already exists
 173         return
 174
 175     # change selection
 176     edge_sel.select = False
 177     for vert in edge_sel.verts:
 178         vert.select = False
 179     for edge in face.edges:
 180         if edge.index < 0:
 181             edge.select = True
 182     v3.select = True
 183     v4.select = True
 184
 185     # adjust uv-map
 186     if __name__ != '__main__':
 187         if addon_prefs.adjustuv:
 188             uv_layer = get_uv_layer(ob, bm, mat_index)
 189             if uv_layer:
 190                 uv_ori = {}
 191                 for vert in [v1, v2, v3, v4]:
 192                     for loop in vert.link_loops:
 193                         if loop.face.index > -1:
 194                             uv_ori[loop.vert.index] = loop[uv_layer].uv
 195                 if len(uv_ori) == 4 or len(uv_ori) == 3:
 196                     for loop in face.loops:
 197                         if loop.vert.index in uv_ori:
 198                             loop[uv_layer].uv = uv_ori[loop.vert.index]
 199
 200     # toggle mode, to force correct drawing
 201     bpy.ops.object.mode_set(mode='OBJECT')
 202     bpy.ops.object.mode_set(mode='EDIT')
 203
 204
 205 # create a face from a single selected vertex, if it is an open vertex
 206 def quad_from_vertex(bm, vert_sel, context, event):
 207     addon_prefs = context.preferences.addons[__name__].preferences
 208     ob = context.active_object
 209     me = ob.data
 210     region = context.region
 211     region_3d = context.space_data.region_3d
 212
 213     # find linked edges that are open (<2 faces connected)
 214     edges = [edge for edge in vert_sel.link_edges if len(edge.link_faces) < 2]
 215     if len(edges) < 2:
 216         return
 217
 218     # determine which edges to use, based on mouse cursor position
 219     min_dist = False
 220     mouse_pos = mathutils.Vector([event.mouse_region_x, event.mouse_region_y])
 221     for a, b in itertools.combinations(edges, 2):
 222         other_verts = [vert for edge in [a, b] for vert in edge.verts \
 223                        if not vert.select]
 224         mid_other = (other_verts[0].co.copy() + other_verts[1].co.copy()) \
 225                     / 2
 226         new_pos = 2 * (mid_other - vert_sel.co.copy()) + vert_sel.co.copy()
 227         world_pos = ob.matrix_world @ new_pos
 228         screen_pos = view3d_utils.location_3d_to_region_2d(region, region_3d,
 229                                                            world_pos)
 230         dist = (mouse_pos - screen_pos).length
 231         if not min_dist or dist < min_dist[0]:
 232             min_dist = (dist, (a, b), other_verts, new_pos)
 233
 234     # create vertex at location mirrored in the line, connecting the open edges
 235     edges = min_dist[1]
 236     other_verts = min_dist[2]
 237     new_pos = min_dist[3]
 238     vert_new = bm.verts.new(new_pos)
 239
 240     # normal detection
 241     flip_align = True
 242     normal_edge = edges[0]
 243     if not normal_edge.link_faces:
 244         normal_edge = edges[1]
 245         if not normal_edge.link_faces:
 246             # no connected faces, so no need to flip the face normal
 247             flip_align = False
 248     if flip_align:  # there is a face to which the normal can be aligned
 249         ref_verts = [v for v in normal_edge.link_faces[0].verts]
 250         if other_verts[0] in ref_verts:
 251             va_1 = other_verts[0]
 252             va_2 = vert_sel
 253         else:
 254             va_1 = vert_sel
 255             va_2 = other_verts[1]
 256         if (va_1 == ref_verts[0] and va_2 == ref_verts[-1]) or \
 257                 (va_2 == ref_verts[0] and va_1 == ref_verts[-1]):
 258             # reference verts are at start and end of the list -> shift list
 259             ref_verts = ref_verts[1:] + [ref_verts[0]]
 260         if ref_verts.index(va_1) > ref_verts.index(va_2):
 261             # connected face has same normal direction, so don't flip
 262             flip_align = False
 263
 264     # material index detection
 265     ref_faces = vert_sel.link_faces
 266     if not ref_faces:
 267         mat_index = False
 268         smooth = False
 269     else:
 270         mat_index = ref_faces[0].material_index
 271         smooth = ref_faces[0].smooth
 272
 273     if addon_prefs.quad_from_v_mat:
 274         mat_index = bpy.context.object.active_material_index
 275
 276     # create face between all 4 vertices involved
 277     verts = [other_verts[0], vert_sel, other_verts[1], vert_new]
 278     if flip_align:
 279         verts.reverse()
 280     face = bm.faces.new(verts)
 281     if mat_index:
 282         face.material_index = mat_index
 283     face.smooth = smooth
 284
 285     # change selection
 286     vert_new.select = True
 287     vert_sel.select = False
 288
 289     # adjust uv-map
 290     if __name__ != '__main__':
 291         if addon_prefs.adjustuv:
 292             uv_layer = get_uv_layer(ob, bm, mat_index)
 293             if uv_layer:
 294                 uv_others = {}
 295                 uv_sel = None
 296                 uv_new = None
 297                 # get original uv coordinates
 298                 for i in range(2):
 299                     for loop in other_verts[i].link_loops:
 300                         if loop.face.index > -1:
 301                             uv_others[loop.vert.index] = loop[uv_layer].uv
 302                             break
 303                 if len(uv_others) == 2:
 304                     mid_other = (list(uv_others.values())[0] +
 305                                  list(uv_others.values())[1]) / 2
 306                     for loop in vert_sel.link_loops:
 307                         if loop.face.index > -1:
 308                             uv_sel = loop[uv_layer].uv
 309                             break
 310                     if uv_sel:
 311                         uv_new = 2 * (mid_other - uv_sel) + uv_sel
 312
 313                 # set uv coordinates for new loops
 314                 if uv_new:
 315                     for loop in face.loops:
 316                         if loop.vert.index == -1:
 317                             x, y = uv_new
 318                         elif loop.vert.index in uv_others:
 319                             x, y = uv_others[loop.vert.index]
 320                         else:
 321                             x, y = uv_sel
 322                         loop[uv_layer].uv = (x, y)
 323
 324     # toggle mode, to force correct drawing
 325     bpy.ops.object.mode_set(mode='OBJECT')
 326     bpy.ops.object.mode_set(mode='EDIT')
 327
 328
 329 def expand_vert(self, context, event):
 330     addon_prefs = context.preferences.addons[__name__].preferences
 331     ob = context.active_object
 332     obj = bpy.context.object
 333     me = obj.data
 334     bm = bmesh.from_edit_mesh(me)
 335     region = context.region
 336     region_3d = context.space_data.region_3d
 337     rv3d = context.space_data.region_3d
 338
 339     for v in bm.verts:
 340         if v.select:
 341             v_active = v
 342
 343     try:
 344         depth_location = v_active.co
 345     except:
 346         return {'CANCELLED'}
 347     # create vert in mouse cursor location
 348
 349     mouse_pos = Vector((event.mouse_region_x, event.mouse_region_y))
 350     location_3d = view3d_utils.region_2d_to_location_3d(region, rv3d, mouse_pos, depth_location)
 351
 352     c_verts = []
 353     # find and select linked edges that are open (<2 faces connected) add those edge verts to c_verts list
 354     linked = v_active.link_edges
 355     for edges in linked:
 356         if len(edges.link_faces) < 2:
 357             edges.select = True
 358             for v in edges.verts:
 359                 if v is not v_active:
 360                     c_verts.append(v)
 361
 362     # Compare distance in 2d between mouse and edges middle points
 363     screen_pos_va = view3d_utils.location_3d_to_region_2d(region, region_3d,
 364                                                           ob.matrix_world @ v_active.co)
 365     screen_pos_v1 = view3d_utils.location_3d_to_region_2d(region, region_3d,
 366                                                           ob.matrix_world @ c_verts[0].co)
 367     screen_pos_v2 = view3d_utils.location_3d_to_region_2d(region, region_3d,
 368                                                           ob.matrix_world @ c_verts[1].co)
 369
 370     mid_pos_v1 = Vector(((screen_pos_va[0] + screen_pos_v1[0]) / 2, (screen_pos_va[1] + screen_pos_v1[1]) / 2))
 371     mid_pos_V2 = Vector(((screen_pos_va[0] + screen_pos_v2[0]) / 2, (screen_pos_va[1] + screen_pos_v2[1]) / 2))
 372
 373     dist1 = math.log10(pow((mid_pos_v1[0] - mouse_pos[0]), 2) + pow((mid_pos_v1[1] - mouse_pos[1]), 2))
 374     dist2 = math.log10(pow((mid_pos_V2[0] - mouse_pos[0]), 2) + pow((mid_pos_V2[1] - mouse_pos[1]), 2))
 375
 376     bm.normal_update()
 377     bm.verts.ensure_lookup_table()
 378
 379     # Deselect not needed point and create new face
 380     if dist1 < dist2:
 381         c_verts[1].select = False
 382         lleft = c_verts[0].link_faces
 383
 384     else:
 385         c_verts[0].select = False
 386         lleft = c_verts[1].link_faces
 387
 388     lactive = v_active.link_faces
 389     # lverts = lactive[0].verts
 390
 391     mat_index = lactive[0].material_index
 392     smooth = lactive[0].smooth
 393
 394     for faces in lactive:
 395         if faces in lleft:
 396             cface = faces
 397             if len(faces.verts) == 3:
 398                 bm.normal_update()
 399                 bmesh.update_edit_mesh(obj.data)
 400                 bpy.ops.mesh.select_all(action='DESELECT')
 401                 v_active.select = True
 402                 bpy.ops.mesh.rip_edge_move('INVOKE_DEFAULT')
 403                 return {'FINISHED'}
 404
 405     lverts = cface.verts
 406
 407     # create triangle with correct normal orientation
 408     # if You looking at that part - yeah... I know. I still dont get how blender calculates normals...
 409
 410     # from L to R
 411     if dist1 < dist2:
 412         if (lverts[0] == v_active and lverts[3] == c_verts[0]) \
 413                 or (lverts[2] == v_active and lverts[1] == c_verts[0]) \
 414                 or (lverts[1] == v_active and lverts[0] == c_verts[0]) \
 415                 or (lverts[3] == v_active and lverts[2] == c_verts[0]):
 416             v_new = bm.verts.new(v_active.co)
 417             face_new = bm.faces.new((c_verts[0], v_new, v_active))
 418
 419         elif (lverts[1] == v_active and lverts[2] == c_verts[0]) \
 420                 or (lverts[0] == v_active and lverts[1] == c_verts[0]) \
 421                 or (lverts[3] == v_active and lverts[0] == c_verts[0]) \
 422                 or (lverts[2] == v_active and lverts[3] == c_verts[0]):
 423             v_new = bm.verts.new(v_active.co)
 424             face_new = bm.faces.new((v_active, v_new, c_verts[0]))
 425
 426         else:
 427             pass
 428     # from R to L
 429     else:
 430         if (lverts[2] == v_active and lverts[3] == c_verts[1]) \
 431                 or (lverts[0] == v_active and lverts[1] == c_verts[1]) \
 432                 or (lverts[1] == v_active and lverts[2] == c_verts[1]) \
 433                 or (lverts[3] == v_active and lverts[0] == c_verts[1]):
 434             v_new = bm.verts.new(v_active.co)
 435             face_new = bm.faces.new((v_active, v_new, c_verts[1]))
 436
 437         elif (lverts[0] == v_active and lverts[3] == c_verts[1]) \
 438                 or (lverts[2] == v_active and lverts[1] == c_verts[1]) \
 439                 or (lverts[1] == v_active and lverts[0] == c_verts[1]) \
 440                 or (lverts[3] == v_active and lverts[2] == c_verts[1]):
 441             v_new = bm.verts.new(v_active.co)
 442             face_new = bm.faces.new((c_verts[1], v_new, v_active))
 443
 444         else:
 445             pass
 446
 447     # set smooth and mat based on starting face
 448     if addon_prefs.tris_from_v_mat:
 449         face_new.material_index = bpy.context.object.active_material_index
 450     else:
 451         face_new.material_index = mat_index
 452     face_new.smooth = smooth
 453
 454     # update normals
 455     bpy.ops.mesh.select_all(action='DESELECT')
 456     v_new.select = True
 457     bm.select_history.add(v_new)
 458
 459     bm.normal_update()
 460     bmesh.update_edit_mesh(obj.data)
 461     bpy.ops.transform.translate('INVOKE_DEFAULT')
 462
 463
 464 def checkforconnected(conection):
 465     obj = bpy.context.object
 466     me = obj.data
 467     bm = bmesh.from_edit_mesh(me)
 468
 469     # Checks for number of edes or faces connected to selected vertex
 470     for v in bm.verts:
 471         if v.select:
 472             v_active = v
 473     if conection == 'faces':
 474         linked = v_active.link_faces
 475     elif conection == 'edges':
 476         linked = v_active.link_edges
 477
 478     bmesh.update_edit_mesh(obj.data)
 479     return len(linked)
 480
 481
 482 # autograb preference in addons panel
 483 class F2AddonPreferences(bpy.types.AddonPreferences):
 484     bl_idname = __name__
 485     adjustuv : bpy.props.BoolProperty(
 486         name="Adjust UV",
 487         description="Automatically update UV unwrapping",
 488         default=False)
 489     autograb : bpy.props.BoolProperty(
 490         name="Auto Grab",
 491         description="Automatically puts a newly created vertex in grab mode",
 492         default=True)
 493     extendvert : bpy.props.BoolProperty(
 494         name="Enable Extend Vert",
 495         description="Enables a way to build tris and quads by adding verts",
 496         default=False)
 497     quad_from_e_mat : bpy.props.BoolProperty(
 498         name="Quad From Edge",
 499         description="Use active material for created face instead of close one",
 500         default=True)
 501     quad_from_v_mat : bpy.props.BoolProperty(
 502         name="Quad From Vert",
 503         description="Use active material for created face instead of close one",
 504         default=True)
 505     tris_from_v_mat : bpy.props.BoolProperty(
 506         name="Tris From Vert",
 507         description="Use active material for created face instead of close one",
 508         default=True)
 509     ngons_v_mat : bpy.props.BoolProperty(
 510         name="Ngons",
 511         description="Use active material for created face instead of close one",
 512         default=True)
 513
 514     def draw(self, context):
 515         layout = self.layout
 516
 517         col = layout.column()
 518         col.label(text="behaviours:")
 519         col.prop(self, "autograb")
 520         col.prop(self, "adjustuv")
 521         col.prop(self, "extendvert")
 522
 523         col = layout.column()
 524         col.label(text="use active material when creating:")
 525         col.prop(self, "quad_from_e_mat")
 526         col.prop(self, "quad_from_v_mat")
 527         col.prop(self, "tris_from_v_mat")
 528         col.prop(self, "ngons_v_mat")
 529
 530
 531 class MeshF2(bpy.types.Operator):
 532     """Tooltip"""
 533     bl_idname = "mesh.f2"
 534     bl_label = "Make Edge/Face"
 535     bl_description = "Extends the 'Make Edge/Face' functionality"
 536     bl_options = {'REGISTER', 'UNDO'}
 537
 538     @classmethod
 539     def poll(cls, context):
 540         # check we are in mesh editmode
 541         ob = context.active_object
 542         return (ob and ob.type == 'MESH' and context.mode == 'EDIT_MESH')
 543
 544     def usequad(self, bm, sel, context, event):
 545         quad_from_vertex(bm, sel, context, event)
 546         if __name__ != '__main__':
 547             addon_prefs = context.preferences.addons[__name__].preferences
 548             if addon_prefs.autograb:
 549                 bpy.ops.transform.translate('INVOKE_DEFAULT')
 550
 551     def invoke(self, context, event):
 552         bm = bmesh.from_edit_mesh(context.active_object.data)
 553         sel = [v for v in bm.verts if v.select]
 554         if len(sel) > 2:
 555             # original 'Make Edge/Face' behaviour
 556             try:
 557                 bpy.ops.mesh.edge_face_add('INVOKE_DEFAULT')
 558                 addon_prefs = context.preferences.addons[__name__].preferences
 559                 if addon_prefs.ngons_v_mat:
 560                     bpy.ops.object.material_slot_assign()
 561             except:
 562                 return {'CANCELLED'}
 563         elif len(sel) == 1:
 564             # single vertex selected -> mirror vertex and create new face
 565             addon_prefs = context.preferences.addons[__name__].preferences
 566             if addon_prefs.extendvert:
 567                 if checkforconnected('faces') in [2]:
 568                     if checkforconnected('edges') in [3]:
 569                         expand_vert(self, context, event)
 570                     else:
 571                         self.usequad(bm, sel[0], context, event)
 572
 573                 elif checkforconnected('faces') in [1]:
 574                     if checkforconnected('edges') in [2]:
 575                         expand_vert(self, context, event)
 576                     else:
 577                         self.usequad(bm, sel[0], context, event)
 578                 else:
 579                     self.usequad(bm, sel[0], context, event)
 580             else:
 581                 self.usequad(bm, sel[0], context, event)
 582         elif len(sel) == 2:
 583             edges_sel = [ed for ed in bm.edges if ed.select]
 584             if len(edges_sel) != 1:
 585                 # 2 vertices selected, but not on the same edge
 586                 bpy.ops.mesh.edge_face_add()
 587             else:
 588                 # single edge selected -> new face from linked open edges
 589                 quad_from_edge(bm, edges_sel[0], context, event)
 590
 591         return {'FINISHED'}
 592
 593
 594 # registration
 595 classes = [MeshF2, F2AddonPreferences]
 596 addon_keymaps = []
 597
 598
 599 def register():
 600     # add operator
 601     for c in classes:
 602         bpy.utils.register_class(c)
 603
 604     # add keymap entry
 605     kcfg = bpy.context.window_manager.keyconfigs.addon
 606     if kcfg:
 607         km = kcfg.keymaps.new(name='Mesh', space_type='EMPTY')
 608         kmi = km.keymap_items.new("mesh.f2", 'F', 'PRESS')
 609         addon_keymaps.append((km, kmi.idname))
 610
 611
 612 def unregister():
 613     # remove keymap entry
 614     for km, kmi_idname in addon_keymaps:
 615         for kmi in km.keymap_items:
 616             if kmi.idname == kmi_idname:
 617                 km.keymap_items.remove(kmi)
 618     addon_keymaps.clear()
 619
 620     # remove operator and preferences
 621     for c in reversed(classes):
 622         bpy.utils.unregister_class(c)
 623
 624
 625 if __name__ == "__main__":
 626     register()