File headers: use SPDX license identifiers

Some files needed to be changed manually.

27 files changed, 67 insertions, 22 deletions

diff --git a/add_mesh_discombobulator/mesh_discombobulator.py b/add_mesh_discombobulator/mesh_discombobulator.py
index 93f3b3c4..09c6eae0 100644
--- a/add_mesh_discombobulator/mesh_discombobulator.py
+++ b/add_mesh_discombobulator/mesh_discombobulator.py
@@ -1,4 +1,6 @@
-# GPL # Original Authors: Evan J. Rosky (syrux), Chichiri, Jace Priester #
+# SPDX-License-Identifier: GPL-2.0-or-later
+
+# Original Authors: Evan J. Rosky (syrux), Chichiri, Jace Priester
 
 import bpy
 import random
diff --git a/add_mesh_extra_objects/add_mesh_teapot.py b/add_mesh_extra_objects/add_mesh_teapot.py
index e4ddbecb..6fc693c4 100644
--- a/add_mesh_extra_objects/add_mesh_teapot.py
+++ b/add_mesh_extra_objects/add_mesh_teapot.py
@@ -1,4 +1,6 @@
-# GPL #  Author, Anthony D'Agostino
+# SPDX-License-Identifier: GPL-2.0-or-later
+
+# Author, Anthony D'Agostino
 
 import bpy
 from bpy.props import (
diff --git a/amaranth/render/meshlight_add.py b/amaranth/render/meshlight_add.py
index 0b78b52b..a7febbfa 100644
--- a/amaranth/render/meshlight_add.py
+++ b/amaranth/render/meshlight_add.py
@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0-or-later
+
 import bpy
 from mathutils import Vector
 from amaranth.utils import cycles_exists
diff --git a/btrace/bTrace_panel.py b/btrace/bTrace_panel.py
index 2d267e8a..6783207a 100644
--- a/btrace/bTrace_panel.py
+++ b/btrace/bTrace_panel.py
@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0-or-later
+
 import bpy
 from bpy.types import Panel
 
diff --git a/curve_assign_shapekey.py b/curve_assign_shapekey.py
index 643eb3a2..a87e89b0 100644
--- a/curve_assign_shapekey.py
+++ b/curve_assign_shapekey.py
@@ -1,14 +1,12 @@
-#
-#
+# SPDX-License-Identifier: GPL-3.0-or-later
+# Copyright (C) 2019  Shrinivas Kulkarni
+
 # This Blender add-on assigns one or more Bezier Curves as shape keys to another
 # Bezier Curve
 #
 # Supported Blender Versions: 2.8x
 #
-# Copyright (C) 2019  Shrinivas Kulkarni
-#
-# License: GPL-3.0 (https://github.com/Shriinivas/assignshapekey/blob/master/LICENSE)
-#
+# https://github.com/Shriinivas/assignshapekey/blob/master/LICENSE
 
 import bpy, bmesh, bgl, gpu
 from gpu_extras.batch import batch_for_shader
diff --git a/curve_tools/curves.py b/curve_tools/curves.py
index 8a1a1484..8b5e2e7f 100644
--- a/curve_tools/curves.py
+++ b/curve_tools/curves.py
@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0-or-later
+
 from . import mathematics
 
 import bpy
diff --git a/curve_tools/operators.py b/curve_tools/operators.py
index 2b1fe12d..e4480f88 100644
--- a/curve_tools/operators.py
+++ b/curve_tools/operators.py
@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0-or-later
+
 import time
 import threading
 
diff --git a/greasepencil_tools/import_brush_pack.py b/greasepencil_tools/import_brush_pack.py
index b1306bed..2b960af6 100644
--- a/greasepencil_tools/import_brush_pack.py
+++ b/greasepencil_tools/import_brush_pack.py
@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0-or-later
+
 import bpy
 import re
 import ssl
diff --git a/greasepencil_tools/rotate_canvas.py b/greasepencil_tools/rotate_canvas.py
index f89e006e..6db43234 100644
--- a/greasepencil_tools/rotate_canvas.py
+++ b/greasepencil_tools/rotate_canvas.py
@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0-or-later
+
 from .prefs import get_addon_prefs
 
 import bpy
@@ -100,7 +102,7 @@ class RC_OT_RotateCanvas(bpy.types.Operator):
 
         ## area deformation restore
         new_cam_offset = mathutils.Vector((new_cam_offset[0], new_cam_offset[1] * self.ratio_inv))
-        
+
         context.space_data.region_3d.view_camera_offset = new_cam_offset
 
     def execute(self, context):
@@ -201,7 +203,7 @@ class RC_OT_RotateCanvas(bpy.types.Operator):
         # CORRECT UI OVERLAP FROM HEADER TOOLBAR
         regs = context.area.regions
         if context.preferences.system.use_region_overlap:
-            w = context.area.width 
+            w = context.area.width
             # minus tool header
             h = context.area.height - regs[0].height
         else:
@@ -209,9 +211,9 @@ class RC_OT_RotateCanvas(bpy.types.Operator):
             w = context.area.width - regs[2].width - regs[3].width
             # minus tool header + header
             h = context.area.height - regs[0].height - regs[1].height
-        
+
         self.ratio = h / w
-        self.ratio_inv = w / h    
+        self.ratio_inv = w / h
 
         if self.in_cam:
             # Get camera from scene
@@ -221,8 +223,8 @@ class RC_OT_RotateCanvas(bpy.types.Operator):
             if self.cam.lock_rotation[:] != (False, False, False):
                 self.report({'WARNING'}, 'Camera rotation is locked')
                 return {'CANCELLED'}
-            
-            if self.use_view_center:                
+
+            if self.use_view_center:
                 self.center = mathutils.Vector((w/2, h/2))
             else:
                 self.center = self.get_center_view(context, self.cam)
@@ -234,7 +236,7 @@ class RC_OT_RotateCanvas(bpy.types.Operator):
             # store camera matrix world
             self.cam_matrix = self.cam.matrix_world.copy()
             # self.cam_init_euler = self.cam.rotation_euler.copy()
-            
+
             ## initialize current view_offset in camera
             self.view_cam_offset = mathutils.Vector(context.space_data.region_3d.view_camera_offset)
 
diff --git a/io_export_paper_model.py b/io_export_paper_model.py
index 94d16361..288c4520 100644
--- a/io_export_paper_model.py
+++ b/io_export_paper_model.py
@@ -1,6 +1,6 @@
-# -*- coding: utf-8 -*-
-# This script is Free software. Please share and reuse.
-# ♡2010-2021 Adam Dominec <adominec@gmail.com>
+# SPDX-License-Identifier: GPL-2.0-or-later
+
+# Copyright 2010-2021 Adam Dominec <adominec@gmail.com>
 
 ## Code structure
 # This file consists of several components, in this order:
diff --git a/lighting_tri_lights.py b/lighting_tri_lights.py
index f86972ed..5b31ad27 100644
--- a/lighting_tri_lights.py
+++ b/lighting_tri_lights.py
@@ -1,4 +1,6 @@
-# gpl: author Daniel Schalla, maintained by meta-androcto
+# SPDX-License-Identifier: GPL-2.0-or-later
+
+# author Daniel Schalla, maintained by meta-androcto
 
 bl_info = {
     "name": "Tri-lighting",
diff --git a/magic_uv/lib/bglx.py b/magic_uv/lib/bglx.py
index e72cd734..c1f696ab 100644
--- a/magic_uv/lib/bglx.py
+++ b/magic_uv/lib/bglx.py
@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0-or-later
+
 from threading import Lock
 
 import bgl
diff --git a/materials_utils/enum_values.py b/materials_utils/enum_values.py
index 2f257400..9e198806 100644
--- a/materials_utils/enum_values.py
+++ b/materials_utils/enum_values.py
@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0-or-later
+
 import bpy
 
 
diff --git a/materials_utils/functions.py b/materials_utils/functions.py
index 4663fbeb..9397257a 100644
--- a/materials_utils/functions.py
+++ b/materials_utils/functions.py
@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0-or-later
+
 import bpy
 from math import radians, degrees
 
diff --git a/materials_utils/menus.py b/materials_utils/menus.py
index 2e444298..3fff4a0d 100644
--- a/materials_utils/menus.py
+++ b/materials_utils/menus.py
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0-or-later
 import bpy
 
 from .functions import *
diff --git a/materials_utils/operators.py b/materials_utils/operators.py
index a91c2301..98eab763 100644
--- a/materials_utils/operators.py
+++ b/materials_utils/operators.py
@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0-or-later
+
 import bpy
 
 from bpy.types import Operator
diff --git a/materials_utils/preferences.py b/materials_utils/preferences.py
index 7fdbd9ff..fdbb4993 100644
--- a/materials_utils/preferences.py
+++ b/materials_utils/preferences.py
@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0-or-later
+
 import bpy
 
 from bpy.types import (
diff --git a/mesh_auto_mirror.py b/mesh_auto_mirror.py
index 7057227b..114ee9d3 100644
--- a/mesh_auto_mirror.py
+++ b/mesh_auto_mirror.py
@@ -1,8 +1,9 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
 ######################################################################################################
 # A simple add-on to auto cut in two and mirror an object                                            #
 # Actually partially uncommented (see further version)                                               #
 # Author: Lapineige, Bookyakuno                                                                      #
-# License: GPL v3                                                                                    #
 ######################################################################################################
 # 2.8 update by Bookyakuno, meta-androcto
 
diff --git a/object_carver/carver_draw.py b/object_carver/carver_draw.py
index f2a3aadc..c7000787 100644
--- a/object_carver/carver_draw.py
+++ b/object_carver/carver_draw.py
@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0-or-later
+
 import bpy
 import bgl
 import blf
diff --git a/object_carver/carver_operator.py b/object_carver/carver_operator.py
index 880f6491..4c64fdf0 100644
--- a/object_carver/carver_operator.py
+++ b/object_carver/carver_operator.py
@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0-or-later
+
 import bpy
 import bpy_extras
 import sys
diff --git a/object_carver/carver_preferences.py b/object_carver/carver_preferences.py
index 1e6bc7ab..873a814d 100644
--- a/object_carver/carver_preferences.py
+++ b/object_carver/carver_preferences.py
@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0-or-later
+
 import bpy
 from bpy.props import (
     BoolProperty,
diff --git a/object_carver/carver_profils.py b/object_carver/carver_profils.py
index 9c99bf97..d786c280 100644
--- a/object_carver/carver_profils.py
+++ b/object_carver/carver_profils.py
@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0-or-later
+
 from mathutils import (
     Vector,
 )
diff --git a/object_carver/carver_utils.py b/object_carver/carver_utils.py
index b026c1d1..0ac4c991 100644
--- a/object_carver/carver_utils.py
+++ b/object_carver/carver_utils.py
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 import bpy
 import bgl
diff --git a/pose_library/asset_browser.py b/pose_library/asset_browser.py
index a95e48fe..d4662284 100644
--- a/pose_library/asset_browser.py
+++ b/pose_library/asset_browser.py
@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0-or-later
+
 """Functions for finding and working with Asset Browsers."""
 
 from typing import Iterable, Optional, Tuple
diff --git a/space_view3d_stored_views/io.py b/space_view3d_stored_views/io.py
index 83a5499d..c17d307e 100644
--- a/space_view3d_stored_views/io.py
+++ b/space_view3d_stored_views/io.py
@@ -1,4 +1,6 @@
-# gpl authors: nfloyd, Francesco Siddi
+# SPDX-License-Identifier: GPL-2.0-or-later
+
+# Authors: nfloyd, Francesco Siddi
 
 import gzip
 import os
diff --git a/space_view3d_stored_views/properties.py b/space_view3d_stored_views/properties.py
index 51666ce2..a9fd6b2b 100644
--- a/space_view3d_stored_views/properties.py
+++ b/space_view3d_stored_views/properties.py
@@ -1,4 +1,6 @@
-# gpl authors: nfloyd, Francesco Siddi
+# SPDX-License-Identifier: GPL-2.0-or-later
+
+# authors: nfloyd, Francesco Siddi
 import bpy
 from bpy.types import PropertyGroup
 from bpy.props import (
diff --git a/viewport_vr_preview/configs/default.py b/viewport_vr_preview/configs/default.py
index a20c5c6d..a42b3f45 100644
--- a/viewport_vr_preview/configs/default.py
+++ b/viewport_vr_preview/configs/default.py
@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0-or-later
+
 actionconfig_version = (3, 0, 39)
 actionconfig_data = \
 [("blender_default",