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Batch obj file exporter for blender 2.8, now with mesh centering
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# ##### BEGIN GPL LICENSE BLOCK ##### | |
# | |
# This program is free software; you can redistribute it and/or | |
# modify it under the terms of the GNU General Public License | |
# as published by the Free Software Foundation; either version 2 | |
# of the License, or (at your option) any later version. | |
# | |
# This program is distributed in the hope that it will be useful, | |
# but WITHOUT ANY WARRANTY; without even the implied warranty of | |
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
# GNU General Public License for more details. | |
# | |
# You should have received a copy of the GNU General Public License | |
# along with this program; if not, write to the Free Software Foundation, | |
# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. | |
# | |
# ##### END GPL LICENSE BLOCK ##### | |
# <pep8 compliant> | |
bl_info = { | |
"name": "Export multiple OBJ files", | |
"author": "p2or, brockmann, gammagames", | |
"version": (0, 2, 0), | |
"blender": (2, 80, 0), | |
"location": "File > Import-Export", | |
"description": "Export multiple OBJ files, UV's, materials", | |
"warning": "", | |
"wiki_url": "", | |
"tracker_url": "", | |
"category": "Import-Export"} | |
import bpy | |
import os | |
from bpy_extras.io_utils import ExportHelper | |
from bpy.props import ( | |
BoolProperty, | |
FloatProperty, | |
StringProperty, | |
EnumProperty | |
) | |
class ExportMultipleObjs(bpy.types.Operator, ExportHelper): | |
"""Batch export objects as obj files""" | |
bl_idname = "export_scene.batch_obj" | |
bl_label = "Batch export OBJ's" | |
bl_options = {'PRESET', 'UNDO'} | |
# ExportHelper mixin class uses this | |
filename_ext = ".obj" | |
filter_glob = StringProperty( | |
default="*.obj;*.mtl", | |
options={'HIDDEN'}, | |
) | |
# List of operator properties, the attributes will be assigned | |
# to the class instance from the operator setting before calling. | |
# context group | |
use_selection_setting: BoolProperty( | |
name="Selection Only", | |
description="Export selected objects only", | |
default=True, | |
) | |
use_animation_setting: BoolProperty( | |
name="Animation", | |
description="Write out an OBJ for each frame", | |
default=False, | |
) | |
# object group | |
use_mesh_modifiers_setting: BoolProperty( | |
name="Apply Modifiers", | |
description="Apply modifiers (preview resolution)", | |
default=True, | |
) | |
# extra data group | |
use_edges_setting: BoolProperty( | |
name="Include Edges", | |
description="", | |
default=True, | |
) | |
use_smooth_groups_setting: BoolProperty( | |
name="Smooth Groups", | |
description="Write sharp edges as smooth groups", | |
default=False, | |
) | |
use_smooth_groups_bitflags_setting: BoolProperty( | |
name="Bitflag Smooth Groups", | |
description="Same as 'Smooth Groups', but generate smooth groups IDs as bitflags " | |
"(produces at most 32 different smooth groups, usually much less)", | |
default=False, | |
) | |
use_normals_setting: BoolProperty( | |
name="Write Normals", | |
description="Export one normal per vertex and per face, to represent flat faces and sharp edges", | |
default=False, | |
) | |
use_uvs_setting: BoolProperty( | |
name="Include UVs", | |
description="Write out the active UV coordinates", | |
default=True, | |
) | |
use_materials_setting: BoolProperty( | |
name="Write Materials", | |
description="Write out the MTL file", | |
default=True, | |
) | |
use_triangles_setting: BoolProperty( | |
name="Triangulate Faces", | |
description="Convert all faces to triangles", | |
default=False, | |
) | |
use_nurbs_setting: BoolProperty( | |
name="Write Nurbs", | |
description="Write nurbs curves as OBJ nurbs rather than " | |
"converting to geometry", | |
default=False, | |
) | |
use_vertex_groups_setting: BoolProperty( | |
name="Polygroups", | |
description="", | |
default=False, | |
) | |
use_blen_objects_setting: BoolProperty( | |
name="Objects as OBJ Objects", | |
description="", | |
default=True, | |
) | |
group_by_object_setting: BoolProperty( | |
name="Objects as OBJ Groups ", | |
description="", | |
default=False, | |
) | |
group_by_material_setting: BoolProperty( | |
name="Material Groups", | |
description="", | |
default=False, | |
) | |
keep_vertex_order_setting: BoolProperty( | |
name="Keep Vertex Order", | |
description="", | |
default=False, | |
) | |
axis_forward_setting: EnumProperty( | |
name="Forward", | |
items=( | |
('X', "X Forward", ""), | |
('Y', "Y Forward", ""), | |
('Z', "Z Forward", ""), | |
('-X', "-X Forward", ""), | |
('-Y', "-Y Forward", ""), | |
('-Z', "-Z Forward", ""), | |
), | |
default='-Z', | |
) | |
axis_up_setting: EnumProperty( | |
name="Up", | |
items=( | |
('X', "X Up", ""), | |
('Y', "Y Up", ""), | |
('Z', "Z Up", ""), | |
('-X', "-X Up", ""), | |
('-Y', "-Y Up", ""), | |
('-Z', "-Z Up", ""), | |
), | |
default='Y', | |
) | |
global_scale_setting: FloatProperty( | |
name="Scale", | |
min=0.01, max=1000.0, | |
default=1.0, | |
) | |
use_mesh_as_center: BoolProperty( | |
name="Export Centered", | |
description="Export mesh center as as 0, 0, 0", | |
default=False, | |
) | |
def execute(self, context): | |
# get the folder | |
folder_path = os.path.dirname(self.filepath) | |
# get objects selected in the viewport | |
viewport_selection = context.selected_objects | |
# get export objects | |
obj_export_list = viewport_selection | |
if not self.use_selection_setting: | |
obj_export_list = [i for i in context.scene.objects] | |
# deselect all objects | |
bpy.ops.object.select_all(action='DESELECT') | |
for item in obj_export_list: | |
item.select_set(True) | |
if item.type == 'MESH': | |
if self.use_mesh_as_center: | |
old_location = item.location.copy() | |
item.location = (0.0, 0.0, 0.0) | |
file_path = os.path.join(folder_path, "{}.obj".format(item.name)) | |
bpy.ops.export_scene.obj( | |
filepath=file_path, | |
use_selection=self.use_selection_setting, | |
axis_forward=self.axis_forward_setting, | |
axis_up=self.axis_up_setting, | |
use_animation=self.use_animation_setting, | |
use_mesh_modifiers=self.use_mesh_modifiers_setting, | |
use_edges=self.use_edges_setting, | |
use_smooth_groups=self.use_smooth_groups_setting, | |
use_smooth_groups_bitflags=self.use_smooth_groups_bitflags_setting, | |
use_normals=self.use_normals_setting, | |
use_uvs=self.use_uvs_setting, | |
use_materials=self.use_materials_setting, | |
use_triangles=self.use_triangles_setting, | |
use_nurbs=self.use_nurbs_setting, | |
use_vertex_groups=self.use_vertex_groups_setting, | |
use_blen_objects=self.use_blen_objects_setting, | |
group_by_object=self.group_by_object_setting, | |
group_by_material=self.group_by_material_setting, | |
keep_vertex_order=self.keep_vertex_order_setting, | |
global_scale=self.global_scale_setting | |
) | |
if self.use_mesh_as_center: | |
item.location = old_location | |
item.select_set(False) | |
# restore viewport selection | |
for ob in viewport_selection: | |
ob.select_set(True) | |
return {'FINISHED'} | |
# Only needed if you want to add into a dynamic menu | |
def menu_func_import(self, context): | |
self.layout.operator(ExportMultipleObjs.bl_idname, text="Wavefront Batch (.obj)") | |
def register(): | |
bpy.utils.register_class(ExportMultipleObjs) | |
bpy.types.TOPBAR_MT_file_export.append(menu_func_import) | |
def unregister(): | |
bpy.utils.unregister_class(ExportMultipleObjs) | |
bpy.types.TOPBAR_MT_file_export.remove(menu_func_import) | |
if __name__ == "__main__": | |
register() |
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