Fix for blender 4.2 version

blenderSimplify.py

@@ -52,7 +52,7 @@ def get_args():
 bpy.ops.object.select_all(action='DESELECT')
 
 # selection
-bpy.data.objects['Camera'].select = True
+bpy.data.objects['Camera'].select_set(True)
 
 # remove it
 bpy.ops.object.delete() 
@@ -61,15 +61,15 @@ def get_args():
 # select objects by type
 for o in bpy.data.objects:
     if o.type == 'MESH':
-        o.select = True
+        o.select_set(True)
     else:
-        o.select = False
+        o.select_set(False)
 
 # call the operator once
 bpy.ops.object.delete()
 
 print('\n Beginning the process of Decimation using Blender Python API ...')
-bpy.ops.import_scene.obj(filepath=input_model)
+bpy.ops.wm.obj_import(filepath=input_model)
 print('\n Obj file imported successfully ...')
 modifierName='DecimateMod'
 
@@ -83,14 +83,14 @@ def get_args():
 print("{} meshes".format(len(meshes)))
 
 for i, obj in enumerate(meshes):
-  bpy.context.scene.objects.active = obj
+  bpy.context.view_layer.objects.active = obj
   print("{}/{} meshes, name: {}".format(i, len(meshes), obj.name))
   print("{} has {} verts, {} edges, {} polys".format(obj.name, len(obj.data.vertices), len(obj.data.edges), len(obj.data.polygons)))
   modifier = obj.modifiers.new(modifierName,'DECIMATE')
   modifier.ratio = decimateRatio
   modifier.use_collapse_triangulate = True
-  bpy.ops.object.modifier_apply(apply_as='DATA', modifier=modifierName)
+  bpy.ops.object.modifier_apply(modifier=modifierName)
   print("{} has {} verts, {} edges, {} polys after decimation".format(obj.name, len(obj.data.vertices), len(obj.data.edges), len(obj.data.polygons)))
 
-bpy.ops.export_scene.obj(filepath=output_model)
+bpy.ops.wm.obj_export(filepath=output_model)
 print('\n Process of Decimation Finished ...')

blenderSimplifyNumFaces.py

@@ -54,7 +54,7 @@ def get_args():
 bpy.ops.object.select_all(action='DESELECT')
 
 # selection
-bpy.data.objects['Camera'].select = True
+bpy.data.objects['Camera'].select_set(True)
 
 # remove it
 bpy.ops.object.delete() 
@@ -63,15 +63,15 @@ def get_args():
 # select objects by type
 for o in bpy.data.objects:
     if o.type == 'MESH':
-        o.select = True
+        o.select_set(True)
     else:
-        o.select = False
+        o.select_set(False)
 
 # call the operator once
 bpy.ops.object.delete()
 
 print('\nImporting the input 3D model, please wait.......')
-bpy.ops.import_scene.obj(filepath=input_model)
+bpy.ops.wm.obj_import(filepath=input_model)
 print('\nObj file imported successfully ...')
 
 
@@ -123,16 +123,16 @@ def get_args():
 print("{} meshes".format(len(meshes)))
 
 for i, obj in enumerate(meshes):
-  bpy.context.scene.objects.active = obj
+  bpy.context.view_layer.objects.active = obj
   print("{}/{} meshes, name: {}".format(i, len(meshes), obj.name))
   print("{} has {} verts, {} edges, {} polys".format(obj.name, len(obj.data.vertices), len(obj.data.edges), len(obj.data.polygons)))
   modifier = obj.modifiers.new(modifierName,'DECIMATE')
   modifier.ratio = decimateRatio
   modifier.use_collapse_triangulate = True
-  bpy.ops.object.modifier_apply(apply_as='DATA', modifier=modifierName)
+  bpy.ops.object.modifier_apply(modifier=modifierName)
   print("{} has {} verts, {} edges, {} polys after decimation".format(obj.name, len(obj.data.vertices), len(obj.data.edges), len(obj.data.polygons)))
 
-bpy.ops.export_scene.obj(filepath=str(nameOfFolder) + "/" + output_model)
+bpy.ops.wm.obj_export(filepath=str(nameOfFolder) + "/" + output_model)
 print('\nProcess of Decimation Finished ...')
 print('\nOutput Mesh is stored in corresponding folder ...')
 

blenderSimplifyV2.py

@@ -55,7 +55,7 @@ def get_args():
 bpy.ops.object.select_all(action='DESELECT')
 
 # selection
-bpy.data.objects['Camera'].select = True
+bpy.data.objects['Camera'].select_set(True)
 
 # remove it
 bpy.ops.object.delete() 
@@ -64,15 +64,15 @@ def get_args():
 # select objects by type
 for o in bpy.data.objects:
     if o.type == 'MESH':
-        o.select = True
+        o.select_set(True)
     else:
-        o.select = False
+        o.select_set(False)
 
 # call the operator once
 bpy.ops.object.delete()
 
 print('\nImporting the input 3D model, please wait.......')
-bpy.ops.import_scene.obj(filepath=input_model)
+bpy.ops.wm.obj_import(filepath=input_model)
 print('\nObj file imported successfully ...')
 
 #Creating a folder named as the Number of faces: named '150000'
@@ -96,16 +96,16 @@ def get_args():
 print("{} meshes".format(len(meshes)))
 
 for i, obj in enumerate(meshes):
-  bpy.context.scene.objects.active = obj
+  bpy.context.view_layer.objects.active = obj
   print("{}/{} meshes, name: {}".format(i, len(meshes), obj.name))
   print("{} has {} verts, {} edges, {} polys".format(obj.name, len(obj.data.vertices), len(obj.data.edges), len(obj.data.polygons)))
   modifier = obj.modifiers.new(modifierName,'DECIMATE')
   modifier.ratio = decimateRatio
   modifier.use_collapse_triangulate = True
-  bpy.ops.object.modifier_apply(apply_as='DATA', modifier=modifierName)
+  bpy.ops.object.modifier_apply(modifier=modifierName)
   print("{} has {} verts, {} edges, {} polys after decimation".format(obj.name, len(obj.data.vertices), len(obj.data.edges), len(obj.data.polygons)))
 
-bpy.ops.export_scene.obj(filepath=str(nameOfFolder) + "%/" + output_model)
+bpy.ops.wm.obj_export(filepath=str(nameOfFolder) + "%/" + output_model)
 print('\nProcess of Decimation Finished ...')
 print('\nOutput Mesh is stored in corresponding folder ...')