diff options
| author | Howard Trickey <howard.trickey@gmail.com> | 2022-02-03 17:23:28 +0300 |
|---|---|---|
| committer | Howard Trickey <howard.trickey@gmail.com> | 2022-02-03 17:23:28 +0300 |
| commit | a811876bc7f2ea7e42cfe2c2512ac5a95e40f006 (patch) | |
| tree | a208dde493e1fcb247ac342caa763595b30e579e /io_scene_obj | |
| parent | faa9fc7f98e19be54a715c24061185b04dff5b6c (diff) | |
Split io_scene_obj into separate io_import_obj and io_export_obj.
Also put an " - Old" by the name of the exporter.
The intention is that we won't load the Python exporter, but if a user wants
it, they can enable that addon.
Diffstat (limited to 'io_scene_obj')
| -rw-r--r-- | io_scene_obj/__init__.py | 516 | ||||
| -rw-r--r-- | io_scene_obj/export_obj.py | 793 | ||||
| -rw-r--r-- | io_scene_obj/import_obj.py | 1323 |
3 files changed, 0 insertions, 2632 deletions
diff --git a/io_scene_obj/__init__.py b/io_scene_obj/__init__.py deleted file mode 100644 index 78c2314e..00000000 --- a/io_scene_obj/__init__.py +++ /dev/null @@ -1,516 +0,0 @@ -# ##### 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 ##### - -# <pep8-80 compliant> - -bl_info = { - "name": "Wavefront OBJ format", - "author": "Campbell Barton, Bastien Montagne", - "version": (3, 9, 0), - "blender": (3, 0, 0), - "location": "File > Import-Export", - "description": "Import-Export OBJ, Import OBJ mesh, UV's, materials and textures", - "warning": "", - "doc_url": "{BLENDER_MANUAL_URL}/addons/import_export/scene_obj.html", - "support": 'OFFICIAL', - "category": "Import-Export", -} - -if "bpy" in locals(): - import importlib - if "import_obj" in locals(): - importlib.reload(import_obj) - if "export_obj" in locals(): - importlib.reload(export_obj) - - -import bpy -from bpy.props import ( - BoolProperty, - FloatProperty, - StringProperty, - EnumProperty, -) -from bpy_extras.io_utils import ( - ImportHelper, - ExportHelper, - orientation_helper, - path_reference_mode, - axis_conversion, -) - - -@orientation_helper(axis_forward='-Z', axis_up='Y') -class ImportOBJ(bpy.types.Operator, ImportHelper): - """Load a Wavefront OBJ File""" - bl_idname = "import_scene.obj" - bl_label = "Import OBJ" - bl_options = {'PRESET', 'UNDO'} - - filename_ext = ".obj" - filter_glob: StringProperty( - default="*.obj;*.mtl", - options={'HIDDEN'}, - ) - - use_edges: BoolProperty( - name="Lines", - description="Import lines and faces with 2 verts as edge", - default=True, - ) - use_smooth_groups: BoolProperty( - name="Smooth Groups", - description="Surround smooth groups by sharp edges", - default=True, - ) - - use_split_objects: BoolProperty( - name="Object", - description="Import OBJ Objects into Blender Objects", - default=True, - ) - use_split_groups: BoolProperty( - name="Group", - description="Import OBJ Groups into Blender Objects", - default=False, - ) - - use_groups_as_vgroups: BoolProperty( - name="Poly Groups", - description="Import OBJ groups as vertex groups", - default=False, - ) - - use_image_search: BoolProperty( - name="Image Search", - description="Search subdirs for any associated images " - "(Warning, may be slow)", - default=True, - ) - - split_mode: EnumProperty( - name="Split", - items=( - ('ON', "Split", "Split geometry, omits vertices unused by edges or faces"), - ('OFF', "Keep Vert Order", "Keep vertex order from file"), - ), - ) - - global_clamp_size: FloatProperty( - name="Clamp Size", - description="Clamp bounds under this value (zero to disable)", - min=0.0, max=1000.0, - soft_min=0.0, soft_max=1000.0, - default=0.0, - ) - - def execute(self, context): - # print("Selected: " + context.active_object.name) - from . import import_obj - - if self.split_mode == 'OFF': - self.use_split_objects = False - self.use_split_groups = False - else: - self.use_groups_as_vgroups = False - - keywords = self.as_keywords( - ignore=( - "axis_forward", - "axis_up", - "filter_glob", - "split_mode", - ), - ) - - global_matrix = axis_conversion( - from_forward=self.axis_forward, - from_up=self.axis_up, - ).to_4x4() - keywords["global_matrix"] = global_matrix - - if bpy.data.is_saved and context.preferences.filepaths.use_relative_paths: - import os - keywords["relpath"] = os.path.dirname(bpy.data.filepath) - - return import_obj.load(context, **keywords) - - def draw(self, context): - pass - - -class OBJ_PT_import_include(bpy.types.Panel): - bl_space_type = 'FILE_BROWSER' - bl_region_type = 'TOOL_PROPS' - bl_label = "Include" - bl_parent_id = "FILE_PT_operator" - - @classmethod - def poll(cls, context): - sfile = context.space_data - operator = sfile.active_operator - - return operator.bl_idname == "IMPORT_SCENE_OT_obj" - - def draw(self, context): - layout = self.layout - layout.use_property_split = True - layout.use_property_decorate = False # No animation. - - sfile = context.space_data - operator = sfile.active_operator - - layout.prop(operator, 'use_image_search') - layout.prop(operator, 'use_smooth_groups') - layout.prop(operator, 'use_edges') - - -class OBJ_PT_import_transform(bpy.types.Panel): - bl_space_type = 'FILE_BROWSER' - bl_region_type = 'TOOL_PROPS' - bl_label = "Transform" - bl_parent_id = "FILE_PT_operator" - - @classmethod - def poll(cls, context): - sfile = context.space_data - operator = sfile.active_operator - - return operator.bl_idname == "IMPORT_SCENE_OT_obj" - - def draw(self, context): - layout = self.layout - layout.use_property_split = True - layout.use_property_decorate = False # No animation. - - sfile = context.space_data - operator = sfile.active_operator - - layout.prop(operator, "global_clamp_size") - layout.prop(operator, "axis_forward") - layout.prop(operator, "axis_up") - - -class OBJ_PT_import_geometry(bpy.types.Panel): - bl_space_type = 'FILE_BROWSER' - bl_region_type = 'TOOL_PROPS' - bl_label = "Geometry" - bl_parent_id = "FILE_PT_operator" - bl_options = {'DEFAULT_CLOSED'} - - @classmethod - def poll(cls, context): - sfile = context.space_data - operator = sfile.active_operator - - return operator.bl_idname == "IMPORT_SCENE_OT_obj" - - def draw(self, context): - layout = self.layout - - sfile = context.space_data - operator = sfile.active_operator - - layout.row().prop(operator, "split_mode", expand=True) - - layout.use_property_split = True - layout.use_property_decorate = False # No animation. - - col = layout.column() - if operator.split_mode == 'ON': - col.prop(operator, "use_split_objects", text="Split by Object") - col.prop(operator, "use_split_groups", text="Split by Group") - else: - col.prop(operator, "use_groups_as_vgroups") - - -@orientation_helper(axis_forward='-Z', axis_up='Y') -class ExportOBJ(bpy.types.Operator, ExportHelper): - """Save a Wavefront OBJ File""" - - bl_idname = "export_scene.obj" - bl_label = 'Export OBJ' - bl_options = {'PRESET'} - - filename_ext = ".obj" - filter_glob: StringProperty( - default="*.obj;*.mtl", - options={'HIDDEN'}, - ) - - # context group - use_selection: BoolProperty( - name="Selection Only", - description="Export selected objects only", - default=False, - ) - use_animation: BoolProperty( - name="Animation", - description="Write out an OBJ for each frame", - default=False, - ) - - # object group - use_mesh_modifiers: BoolProperty( - name="Apply Modifiers", - description="Apply modifiers", - default=True, - ) - # extra data group - use_edges: BoolProperty( - name="Include Edges", - description="", - default=True, - ) - use_smooth_groups: BoolProperty( - name="Smooth Groups", - description="Write sharp edges as smooth groups", - default=False, - ) - use_smooth_groups_bitflags: 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: BoolProperty( - name="Write Normals", - description="Export one normal per vertex and per face, to represent flat faces and sharp edges", - default=True, - ) - use_uvs: BoolProperty( - name="Include UVs", - description="Write out the active UV coordinates", - default=True, - ) - use_materials: BoolProperty( - name="Write Materials", - description="Write out the MTL file", - default=True, - ) - use_triangles: BoolProperty( - name="Triangulate Faces", - description="Convert all faces to triangles", - default=False, - ) - use_nurbs: BoolProperty( - name="Write Nurbs", - description="Write nurbs curves as OBJ nurbs rather than " - "converting to geometry", - default=False, - ) - use_vertex_groups: BoolProperty( - name="Polygroups", - description="", - default=False, - ) - - # grouping group - use_blen_objects: BoolProperty( - name="OBJ Objects", - description="Export Blender objects as OBJ objects", - default=True, - ) - group_by_object: BoolProperty( - name="OBJ Groups", - description="Export Blender objects as OBJ groups", - default=False, - ) - group_by_material: BoolProperty( - name="Material Groups", - description="Generate an OBJ group for each part of a geometry using a different material", - default=False, - ) - keep_vertex_order: BoolProperty( - name="Keep Vertex Order", - description="", - default=False, - ) - - global_scale: FloatProperty( - name="Scale", - min=0.01, max=1000.0, - default=1.0, - ) - - path_mode: path_reference_mode - - check_extension = True - - def execute(self, context): - from . import export_obj - - from mathutils import Matrix - keywords = self.as_keywords( - ignore=( - "axis_forward", - "axis_up", - "global_scale", - "check_existing", - "filter_glob", - ), - ) - - global_matrix = ( - Matrix.Scale(self.global_scale, 4) @ - axis_conversion( - to_forward=self.axis_forward, - to_up=self.axis_up, - ).to_4x4() - ) - - keywords["global_matrix"] = global_matrix - return export_obj.save(context, **keywords) - - def draw(self, context): - pass - - -class OBJ_PT_export_include(bpy.types.Panel): - bl_space_type = 'FILE_BROWSER' - bl_region_type = 'TOOL_PROPS' - bl_label = "Include" - bl_parent_id = "FILE_PT_operator" - - @classmethod - def poll(cls, context): - sfile = context.space_data - operator = sfile.active_operator - - return operator.bl_idname == "EXPORT_SCENE_OT_obj" - - def draw(self, context): - layout = self.layout - layout.use_property_split = True - layout.use_property_decorate = False # No animation. - - sfile = context.space_data - operator = sfile.active_operator - - col = layout.column(heading="Limit to") - col.prop(operator, 'use_selection') - - col = layout.column(heading="Objects as", align=True) - col.prop(operator, 'use_blen_objects') - col.prop(operator, 'group_by_object') - col.prop(operator, 'group_by_material') - - layout.separator() - - layout.prop(operator, 'use_animation') - - -class OBJ_PT_export_transform(bpy.types.Panel): - bl_space_type = 'FILE_BROWSER' - bl_region_type = 'TOOL_PROPS' - bl_label = "Transform" - bl_parent_id = "FILE_PT_operator" - - @classmethod - def poll(cls, context): - sfile = context.space_data - operator = sfile.active_operator - - return operator.bl_idname == "EXPORT_SCENE_OT_obj" - - def draw(self, context): - layout = self.layout - layout.use_property_split = True - layout.use_property_decorate = False # No animation. - - sfile = context.space_data - operator = sfile.active_operator - - layout.prop(operator, 'global_scale') - layout.prop(operator, 'path_mode') - layout.prop(operator, 'axis_forward') - layout.prop(operator, 'axis_up') - - -class OBJ_PT_export_geometry(bpy.types.Panel): - bl_space_type = 'FILE_BROWSER' - bl_region_type = 'TOOL_PROPS' - bl_label = "Geometry" - bl_parent_id = "FILE_PT_operator" - bl_options = {'DEFAULT_CLOSED'} - - @classmethod - def poll(cls, context): - sfile = context.space_data - operator = sfile.active_operator - - return operator.bl_idname == "EXPORT_SCENE_OT_obj" - - def draw(self, context): - layout = self.layout - layout.use_property_split = True - layout.use_property_decorate = False # No animation. - - sfile = context.space_data - operator = sfile.active_operator - - layout.prop(operator, 'use_mesh_modifiers') - layout.prop(operator, 'use_smooth_groups') - layout.prop(operator, 'use_smooth_groups_bitflags') - layout.prop(operator, 'use_normals') - layout.prop(operator, 'use_uvs') - layout.prop(operator, 'use_materials') - layout.prop(operator, 'use_triangles') - layout.prop(operator, 'use_nurbs', text="Curves as NURBS") - layout.prop(operator, 'use_vertex_groups') - layout.prop(operator, 'keep_vertex_order') - - -def menu_func_import(self, context): - self.layout.operator(ImportOBJ.bl_idname, text="Wavefront (.obj)") - - -def menu_func_export(self, context): - self.layout.operator(ExportOBJ.bl_idname, text="Wavefront (.obj)") - - -classes = ( - ImportOBJ, - OBJ_PT_import_include, - OBJ_PT_import_transform, - OBJ_PT_import_geometry, - ExportOBJ, - OBJ_PT_export_include, - OBJ_PT_export_transform, - OBJ_PT_export_geometry, -) - - -def register(): - for cls in classes: - bpy.utils.register_class(cls) - - bpy.types.TOPBAR_MT_file_import.append(menu_func_import) - bpy.types.TOPBAR_MT_file_export.append(menu_func_export) - - -def unregister(): - bpy.types.TOPBAR_MT_file_import.remove(menu_func_import) - bpy.types.TOPBAR_MT_file_export.remove(menu_func_export) - - for cls in classes: - bpy.utils.unregister_class(cls) - - -if __name__ == "__main__": - register() diff --git a/io_scene_obj/export_obj.py b/io_scene_obj/export_obj.py deleted file mode 100644 index e5466c76..00000000 --- a/io_scene_obj/export_obj.py +++ /dev/null @@ -1,793 +0,0 @@ -# ##### 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> - -import os - -import bpy -from mathutils import Matrix, Vector, Color -from bpy_extras import io_utils, node_shader_utils - -from bpy_extras.wm_utils.progress_report import ( - ProgressReport, - ProgressReportSubstep, -) - - -def name_compat(name): - if name is None: - return 'None' - else: - return name.replace(' ', '_') - - -def mesh_triangulate(me): - import bmesh - bm = bmesh.new() - bm.from_mesh(me) - bmesh.ops.triangulate(bm, faces=bm.faces) - bm.to_mesh(me) - bm.free() - - -def write_mtl(scene, filepath, path_mode, copy_set, mtl_dict): - source_dir = os.path.dirname(bpy.data.filepath) - dest_dir = os.path.dirname(filepath) - - with open(filepath, "w", encoding="utf8", newline="\n") as f: - fw = f.write - - fw('# Blender MTL File: %r\n' % (os.path.basename(bpy.data.filepath) or "None")) - fw('# Material Count: %i\n' % len(mtl_dict)) - - mtl_dict_values = list(mtl_dict.values()) - mtl_dict_values.sort(key=lambda m: m[0]) - - # Write material/image combinations we have used. - # Using mtl_dict.values() directly gives un-predictable order. - for mtl_mat_name, mat in mtl_dict_values: - # Get the Blender data for the material and the image. - # Having an image named None will make a bug, dont do it :) - - fw('\nnewmtl %s\n' % mtl_mat_name) # Define a new material: matname_imgname - - mat_wrap = node_shader_utils.PrincipledBSDFWrapper(mat) if mat else None - - if mat_wrap: - use_mirror = mat_wrap.metallic != 0.0 - use_transparency = mat_wrap.alpha != 1.0 - - # XXX Totally empirical conversion, trying to adapt it - # (from 1.0 - 0.0 Principled BSDF range to 0.0 - 1000.0 OBJ specular exponent range): - # (1.0 - bsdf_roughness)^2 * 1000 - spec = (1.0 - mat_wrap.roughness) - spec *= spec * 1000 - fw('Ns %.6f\n' % spec) - - # Ambient - if use_mirror: - fw('Ka %.6f %.6f %.6f\n' % (mat_wrap.metallic, mat_wrap.metallic, mat_wrap.metallic)) - else: - fw('Ka %.6f %.6f %.6f\n' % (1.0, 1.0, 1.0)) - fw('Kd %.6f %.6f %.6f\n' % mat_wrap.base_color[:3]) # Diffuse - # XXX TODO Find a way to handle tint and diffuse color, in a consistent way with import... - fw('Ks %.6f %.6f %.6f\n' % (mat_wrap.specular, mat_wrap.specular, mat_wrap.specular)) # Specular - # Emission, not in original MTL standard but seems pretty common, see T45766. - emission_strength = mat_wrap.emission_strength - emission = [emission_strength * c for c in mat_wrap.emission_color[:3]] - fw('Ke %.6f %.6f %.6f\n' % tuple(emission)) - fw('Ni %.6f\n' % mat_wrap.ior) # Refraction index - fw('d %.6f\n' % mat_wrap.alpha) # Alpha (obj uses 'd' for dissolve) - - # See http://en.wikipedia.org/wiki/Wavefront_.obj_file for whole list of values... - # Note that mapping is rather fuzzy sometimes, trying to do our best here. - if mat_wrap.specular == 0: - fw('illum 1\n') # no specular. - elif use_mirror: - if use_transparency: - fw('illum 6\n') # Reflection, Transparency, Ray trace - else: - fw('illum 3\n') # Reflection and Ray trace - elif use_transparency: - fw('illum 9\n') # 'Glass' transparency and no Ray trace reflection... fuzzy matching, but... - else: - fw('illum 2\n') # light normally - - #### And now, the image textures... - image_map = { - "map_Kd": "base_color_texture", - "map_Ka": None, # ambient... - "map_Ks": "specular_texture", - "map_Ns": "roughness_texture", - "map_d": "alpha_texture", - "map_Tr": None, # transmission roughness? - "map_Bump": "normalmap_texture", - "disp": None, # displacement... - "refl": "metallic_texture", - "map_Ke": "emission_color_texture" if emission_strength != 0.0 else None, - } - - for key, mat_wrap_key in sorted(image_map.items()): - if mat_wrap_key is None: - continue - tex_wrap = getattr(mat_wrap, mat_wrap_key, None) - if tex_wrap is None: - continue - image = tex_wrap.image - if image is None: - continue - - filepath = io_utils.path_reference(image.filepath, source_dir, dest_dir, - path_mode, "", copy_set, image.library) - options = [] - if key == "map_Bump": - if mat_wrap.normalmap_strength != 1.0: - options.append('-bm %.6f' % mat_wrap.normalmap_strength) - if tex_wrap.translation != Vector((0.0, 0.0, 0.0)): - options.append('-o %.6f %.6f %.6f' % tex_wrap.translation[:]) - if tex_wrap.scale != Vector((1.0, 1.0, 1.0)): - options.append('-s %.6f %.6f %.6f' % tex_wrap.scale[:]) - if options: - fw('%s %s %s\n' % (key, " ".join(options), repr(filepath)[1:-1])) - else: - fw('%s %s\n' % (key, repr(filepath)[1:-1])) - - else: - # Write a dummy material here? - fw('Ns 500\n') - fw('Ka 0.8 0.8 0.8\n') - fw('Kd 0.8 0.8 0.8\n') - fw('Ks 0.8 0.8 0.8\n') - fw('d 1\n') # No alpha - fw('illum 2\n') # light normally - - -def test_nurbs_compat(ob): - if ob.type != 'CURVE': - return False - - for nu in ob.data.splines: - if nu.point_count_v == 1 and nu.type != 'BEZIER': # not a surface and not bezier - return True - - return False - - -def write_nurb(fw, ob, ob_mat): - tot_verts = 0 - cu = ob.data - - # use negative indices - for nu in cu.splines: - if nu.type == 'POLY': - DEG_ORDER_U = 1 - else: - DEG_ORDER_U = nu.order_u - 1 # odd but tested to be correct - - if nu.type == 'BEZIER': - print("\tWarning, bezier curve:", ob.name, "only poly and nurbs curves supported") - continue - - if nu.point_count_v > 1: - print("\tWarning, surface:", ob.name, "only poly and nurbs curves supported") - continue - - if len(nu.points) <= DEG_ORDER_U: - print("\tWarning, order_u is lower then vert count, skipping:", ob.name) - continue - - pt_num = 0 - do_closed = nu.use_cyclic_u - do_endpoints = (do_closed == 0) and nu.use_endpoint_u - - for pt in nu.points: - fw('v %.6f %.6f %.6f\n' % (ob_mat @ pt.co.to_3d())[:]) - pt_num += 1 - tot_verts += pt_num - - fw('g %s\n' % (name_compat(ob.name))) # name_compat(ob.getData(1)) could use the data name too - fw('cstype bspline\n') # not ideal, hard coded - fw('deg %d\n' % DEG_ORDER_U) # not used for curves but most files have it still - - curve_ls = [-(i + 1) for i in range(pt_num)] - - # 'curv' keyword - if do_closed: - if DEG_ORDER_U == 1: - pt_num += 1 - curve_ls.append(-1) - else: - pt_num += DEG_ORDER_U - curve_ls = curve_ls + curve_ls[0:DEG_ORDER_U] - - fw('curv 0.0 1.0 %s\n' % (" ".join([str(i) for i in curve_ls]))) # Blender has no U and V values for the curve - - # 'parm' keyword - tot_parm = (DEG_ORDER_U + 1) + pt_num - tot_parm_div = float(tot_parm - 1) - parm_ls = [(i / tot_parm_div) for i in range(tot_parm)] - - if do_endpoints: # end points, force param - for i in range(DEG_ORDER_U + 1): - parm_ls[i] = 0.0 - parm_ls[-(1 + i)] = 1.0 - - fw("parm u %s\n" % " ".join(["%.6f" % i for i in parm_ls])) - - fw('end\n') - - return tot_verts - - -def write_file(filepath, objects, depsgraph, scene, - EXPORT_TRI=False, - EXPORT_EDGES=False, - EXPORT_SMOOTH_GROUPS=False, - EXPORT_SMOOTH_GROUPS_BITFLAGS=False, - EXPORT_NORMALS=False, - EXPORT_UV=True, - EXPORT_MTL=True, - EXPORT_APPLY_MODIFIERS=True, - EXPORT_APPLY_MODIFIERS_RENDER=False, - EXPORT_BLEN_OBS=True, - EXPORT_GROUP_BY_OB=False, - EXPORT_GROUP_BY_MAT=False, - EXPORT_KEEP_VERT_ORDER=False, - EXPORT_POLYGROUPS=False, - EXPORT_CURVE_AS_NURBS=True, - EXPORT_GLOBAL_MATRIX=None, - EXPORT_PATH_MODE='AUTO', - progress=ProgressReport(), - ): - """ - Basic write function. The context and options must be already set - This can be accessed externally - eg. - write( 'c:\\test\\foobar.obj', Blender.Object.GetSelected() ) # Using default options. - """ - if EXPORT_GLOBAL_MATRIX is None: - EXPORT_GLOBAL_MATRIX = Matrix() - - def veckey3d(v): - return round(v.x, 4), round(v.y, 4), round(v.z, 4) - - def veckey2d(v): - return round(v[0], 4), round(v[1], 4) - - def findVertexGroupName(face, vWeightMap): - """ - Searches the vertexDict to see what groups is assigned to a given face. - We use a frequency system in order to sort out the name because a given vertex can - belong to two or more groups at the same time. To find the right name for the face - we list all the possible vertex group names with their frequency and then sort by - frequency in descend order. The top element is the one shared by the highest number - of vertices is the face's group - """ - weightDict = {} - for vert_index in face.vertices: - vWeights = vWeightMap[vert_index] - for vGroupName, weight in vWeights: - weightDict[vGroupName] = weightDict.get(vGroupName, 0.0) + weight - - if weightDict: - return max((weight, vGroupName) for vGroupName, weight in weightDict.items())[1] - else: - return '(null)' - - with ProgressReportSubstep(progress, 2, "OBJ Export path: %r" % filepath, "OBJ Export Finished") as subprogress1: - with open(filepath, "w", encoding="utf8", newline="\n") as f: - fw = f.write - - # Write Header - fw('# Blender v%s OBJ File: %r\n' % (bpy.app.version_string, os.path.basename(bpy.data.filepath))) - fw('# www.blender.org\n') - - # Tell the obj file what material file to use. - if EXPORT_MTL: - mtlfilepath = os.path.splitext(filepath)[0] + ".mtl" - # filepath can contain non utf8 chars, use repr - fw('mtllib %s\n' % repr(os.path.basename(mtlfilepath))[1:-1]) - - # Initialize totals, these are updated each object - totverts = totuvco = totno = 1 - - face_vert_index = 1 - - # A Dict of Materials - # (material.name, image.name):matname_imagename # matname_imagename has gaps removed. - mtl_dict = {} - # Used to reduce the usage of matname_texname materials, which can become annoying in case of - # repeated exports/imports, yet keeping unique mat names per keys! - # mtl_name: (material.name, image.name) - mtl_rev_dict = {} - - copy_set = set() - - # Get all meshes - subprogress1.enter_substeps(len(objects)) - for i, ob_main in enumerate(objects): - # ignore dupli children - if ob_main.parent and ob_main.parent.instance_type in {'VERTS', 'FACES'}: - subprogress1.step("Ignoring %s, dupli child..." % ob_main.name) - continue - - obs = [(ob_main, ob_main.matrix_world)] - if ob_main.is_instancer: - obs += [(dup.instance_object.original, dup.matrix_world.copy()) - for dup in depsgraph.object_instances - if dup.parent and dup.parent.original == ob_main] - # ~ print(ob_main.name, 'has', len(obs) - 1, 'dupli children') - - subprogress1.enter_substeps(len(obs)) - for ob, ob_mat in obs: - with ProgressReportSubstep(subprogress1, 6) as subprogress2: - uv_unique_count = no_unique_count = 0 - - # Nurbs curve support - if EXPORT_CURVE_AS_NURBS and test_nurbs_compat(ob): - ob_mat = EXPORT_GLOBAL_MATRIX @ ob_mat - totverts += write_nurb(fw, ob, ob_mat) - continue - # END NURBS - - ob_for_convert = ob.evaluated_get(depsgraph) if EXPORT_APPLY_MODIFIERS else ob.original - - try: - me = ob_for_convert.to_mesh() - except RuntimeError: - me = None - - if me is None: - continue - - # _must_ do this before applying transformation, else tessellation may differ - if EXPORT_TRI: - # _must_ do this first since it re-allocs arrays - mesh_triangulate(me) - - me.transform(EXPORT_GLOBAL_MATRIX @ ob_mat) - # If negative scaling, we have to invert the normals... - if ob_mat.determinant() < 0.0: - me.flip_normals() - - if EXPORT_UV: - faceuv = len(me.uv_layers) > 0 - if faceuv: - uv_layer = me.uv_layers.active.data[:] - else: - faceuv = False - - me_verts = me.vertices[:] - - # Make our own list so it can be sorted to reduce context switching - face_index_pairs = [(face, index) for index, face in enumerate(me.polygons)] - - if EXPORT_EDGES: - edges = me.edges - else: - edges = [] - - if not (len(face_index_pairs) + len(edges) + len(me.vertices)): # Make sure there is something to write - # clean up - ob_for_convert.to_mesh_clear() - continue # dont bother with this mesh. - - if EXPORT_NORMALS and face_index_pairs: - me.calc_normals_split() - # No need to call me.free_normals_split later, as this mesh is deleted anyway! - - loops = me.loops - - if (EXPORT_SMOOTH_GROUPS or EXPORT_SMOOTH_GROUPS_BITFLAGS) and face_index_pairs: - smooth_groups, smooth_groups_tot = me.calc_smooth_groups(use_bitflags=EXPORT_SMOOTH_GROUPS_BITFLAGS) - if smooth_groups_tot <= 1: - smooth_groups, smooth_groups_tot = (), 0 - else: - smooth_groups, smooth_groups_tot = (), 0 - - materials = me.materials[:] - material_names = [m.name if m else None for m in materials] - - # avoid bad index errors - if not materials: - materials = [None] - material_names = [name_compat(None)] - - # Sort by Material, then images - # so we dont over context switch in the obj file. - if EXPORT_KEEP_VERT_ORDER: - pass - else: - if len(materials) > 1: - if smooth_groups: - sort_func = lambda a: (a[0].material_index, - smooth_groups[a[1]] if a[0].use_smooth else False) - else: - sort_func = lambda a: (a[0].material_index, - a[0].use_smooth) - else: - # no materials - if smooth_groups: - sort_func = lambda a: smooth_groups[a[1] if a[0].use_smooth else False] - else: - sort_func = lambda a: a[0].use_smooth - - face_index_pairs.sort(key=sort_func) - - del sort_func - - # Set the default mat to no material and no image. - contextMat = 0, 0 # Can never be this, so we will label a new material the first chance we get. - contextSmooth = None # Will either be true or false, set bad to force initialization switch. - - if EXPORT_BLEN_OBS or EXPORT_GROUP_BY_OB: - name1 = ob.name - name2 = ob.data.name - if name1 == name2: - obnamestring = name_compat(name1) - else: - obnamestring = '%s_%s' % (name_compat(name1), name_compat(name2)) - - if EXPORT_BLEN_OBS: - fw('o %s\n' % obnamestring) # Write Object name - else: # if EXPORT_GROUP_BY_OB: - fw('g %s\n' % obnamestring) - - subprogress2.step() - - # Vert - for v in me_verts: - fw('v %.6f %.6f %.6f\n' % v.co[:]) - - subprogress2.step() - - # UV - if faceuv: - # in case removing some of these dont get defined. - uv = f_index = uv_index = uv_key = uv_val = uv_ls = None - - uv_face_mapping = [None] * len(face_index_pairs) - - uv_dict = {} - uv_get = uv_dict.get - for f, f_index in face_index_pairs: - uv_ls = uv_face_mapping[f_index] = [] - for uv_index, l_index in enumerate(f.loop_indices): - uv = uv_layer[l_index].uv - # include the vertex index in the key so we don't share UV's between vertices, - # allowed by the OBJ spec but can cause issues for other importers, see: T47010. - - # this works too, shared UV's for all verts - #~ uv_key = veckey2d(uv) - uv_key = loops[l_index].vertex_index, veckey2d(uv) - - uv_val = uv_get(uv_key) - if uv_val is None: - uv_val = uv_dict[uv_key] = uv_unique_count - fw('vt %.6f %.6f\n' % uv[:]) - uv_unique_count += 1 - uv_ls.append(uv_val) - - del uv_dict, uv, f_index, uv_index, uv_ls, uv_get, uv_key, uv_val - # Only need uv_unique_count and uv_face_mapping - - subprogress2.step() - - # NORMAL, Smooth/Non smoothed. - if EXPORT_NORMALS: - no_key = no_val = None - normals_to_idx = {} - no_get = normals_to_idx.get - loops_to_normals = [0] * len(loops) - for f, f_index in face_index_pairs: - for l_idx in f.loop_indices: - no_key = veckey3d(loops[l_idx].normal) - no_val = no_get(no_key) - if no_val is None: - no_val = normals_to_idx[no_key] = no_unique_count - fw('vn %.4f %.4f %.4f\n' % no_key) - no_unique_count += 1 - loops_to_normals[l_idx] = no_val - del normals_to_idx, no_get, no_key, no_val - else: - loops_to_normals = [] - - subprogress2.step() - - # XXX - if EXPORT_POLYGROUPS: - # Retrieve the list of vertex groups - vertGroupNames = ob.vertex_groups.keys() - if vertGroupNames: - currentVGroup = '' - # Create a dictionary keyed by face id and listing, for each vertex, the vertex groups it belongs to - vgroupsMap = [[] for _i in range(len(me_verts))] - for v_idx, v_ls in enumerate(vgroupsMap): - v_ls[:] = [(vertGroupNames[g.group], g.weight) for g in me_verts[v_idx].groups] - - for f, f_index in face_index_pairs: - f_smooth = f.use_smooth - if f_smooth and smooth_groups: - f_smooth = smooth_groups[f_index] - f_mat = min(f.material_index, len(materials) - 1) - - # MAKE KEY - key = material_names[f_mat], None # No image, use None instead. - - # Write the vertex group - if EXPORT_POLYGROUPS: - if vertGroupNames: - # find what vertext group the face belongs to - vgroup_of_face = findVertexGroupName(f, vgroupsMap) - if vgroup_of_face != currentVGroup: - currentVGroup = vgroup_of_face - fw('g %s\n' % vgroup_of_face) - - # CHECK FOR CONTEXT SWITCH - if key == contextMat: - pass # Context already switched, dont do anything - else: - if key[0] is None and key[1] is None: - # Write a null material, since we know the context has changed. - if EXPORT_GROUP_BY_MAT: - # can be mat_image or (null) - fw("g %s_%s\n" % (name_compat(ob.name), name_compat(ob.data.name))) - if EXPORT_MTL: - fw("usemtl (null)\n") # mat, image - - else: - mat_data = mtl_dict.get(key) - if not mat_data: - # First add to global dict so we can export to mtl - # Then write mtl - - # Make a new names from the mat and image name, - # converting any spaces to underscores with name_compat. - - # If none image dont bother adding it to the name - # Try to avoid as much as possible adding texname (or other things) - # to the mtl name (see [#32102])... - mtl_name = "%s" % name_compat(key[0]) - if mtl_rev_dict.get(mtl_name, None) not in {key, None}: - if key[1] is None: - tmp_ext = "_NONE" - else: - tmp_ext = "_%s" % name_compat(key[1]) - i = 0 - while mtl_rev_dict.get(mtl_name + tmp_ext, None) not in {key, None}: - i += 1 - tmp_ext = "_%3d" % i - mtl_name += tmp_ext - mat_data = mtl_dict[key] = mtl_name, materials[f_mat] - mtl_rev_dict[mtl_name] = key - - if EXPORT_GROUP_BY_MAT: - # can be mat_image or (null) - fw("g %s_%s_%s\n" % (name_compat(ob.name), name_compat(ob.data.name), mat_data[0])) - if EXPORT_MTL: - fw("usemtl %s\n" % mat_data[0]) # can be mat_image or (null) - - contextMat = key - if f_smooth != contextSmooth: - if f_smooth: # on now off - if smooth_groups: - f_smooth = smooth_groups[f_index] - fw('s %d\n' % f_smooth) - else: - fw('s 1\n') - else: # was off now on - fw('s off\n') - contextSmooth = f_smooth - - f_v = [(vi, me_verts[v_idx], l_idx) - for vi, (v_idx, l_idx) in enumerate(zip(f.vertices, f.loop_indices))] - - fw('f') - if faceuv: - if EXPORT_NORMALS: - for vi, v, li in f_v: - fw(" %d/%d/%d" % (totverts + v.index, - totuvco + uv_face_mapping[f_index][vi], - totno + loops_to_normals[li], - )) # vert, uv, normal - else: # No Normals - for vi, v, li in f_v: - fw(" %d/%d" % (totverts + v.index, - totuvco + uv_face_mapping[f_index][vi], - )) # vert, uv - - face_vert_index += len(f_v) - - else: # No UV's - if EXPORT_NORMALS: - for vi, v, li in f_v: - fw(" %d//%d" % (totverts + v.index, totno + loops_to_normals[li])) - else: # No Normals - for vi, v, li in f_v: - fw(" %d" % (totverts + v.index)) - - fw('\n') - - subprogress2.step() - - # Write edges. - if EXPORT_EDGES: - for ed in edges: - if ed.is_loose: - fw('l %d %d\n' % (totverts + ed.vertices[0], totverts + ed.vertices[1])) - - # Make the indices global rather then per mesh - totverts += len(me_verts) - totuvco += uv_unique_count - totno += no_unique_count - - # clean up - ob_for_convert.to_mesh_clear() - - subprogress1.leave_substeps("Finished writing geometry of '%s'." % ob_main.name) - subprogress1.leave_substeps() - - subprogress1.step("Finished exporting geometry, now exporting materials") - - # Now we have all our materials, save them - if EXPORT_MTL: - write_mtl(scene, mtlfilepath, EXPORT_PATH_MODE, copy_set, mtl_dict) - - # copy all collected files. - io_utils.path_reference_copy(copy_set) - - -def _write(context, filepath, - EXPORT_TRI, # ok - EXPORT_EDGES, - EXPORT_SMOOTH_GROUPS, - EXPORT_SMOOTH_GROUPS_BITFLAGS, - EXPORT_NORMALS, # ok - EXPORT_UV, # ok - EXPORT_MTL, - EXPORT_APPLY_MODIFIERS, # ok - EXPORT_APPLY_MODIFIERS_RENDER, # ok - EXPORT_BLEN_OBS, - EXPORT_GROUP_BY_OB, - EXPORT_GROUP_BY_MAT, - EXPORT_KEEP_VERT_ORDER, - EXPORT_POLYGROUPS, - EXPORT_CURVE_AS_NURBS, - EXPORT_SEL_ONLY, # ok - EXPORT_ANIMATION, - EXPORT_GLOBAL_MATRIX, - EXPORT_PATH_MODE, # Not used - ): - - with ProgressReport(context.window_manager) as progress: - base_name, ext = os.path.splitext(filepath) - context_name = [base_name, '', '', ext] # Base name, scene name, frame number, extension - - depsgraph = context.evaluated_depsgraph_get() - scene = context.scene - - # Exit edit mode before exporting, so current object states are exported properly. - if bpy.ops.object.mode_set.poll(): - bpy.ops.object.mode_set(mode='OBJECT') - - orig_frame = scene.frame_current - - # Export an animation? - if EXPORT_ANIMATION: - scene_frames = range(scene.frame_start, scene.frame_end + 1) # Up to and including the end frame. - else: - scene_frames = [orig_frame] # Dont export an animation. - - # Loop through all frames in the scene and export. - progress.enter_substeps(len(scene_frames)) - for frame in scene_frames: - if EXPORT_ANIMATION: # Add frame to the filepath. - context_name[2] = '_%.6d' % frame - - scene.frame_set(frame, subframe=0.0) - if EXPORT_SEL_ONLY: - objects = context.selected_objects - else: - objects = scene.objects - - full_path = ''.join(context_name) - - # erm... bit of a problem here, this can overwrite files when exporting frames. not too bad. - # EXPORT THE FILE. - progress.enter_substeps(1) - write_file(full_path, objects, depsgraph, scene, - EXPORT_TRI, - EXPORT_EDGES, - EXPORT_SMOOTH_GROUPS, - EXPORT_SMOOTH_GROUPS_BITFLAGS, - EXPORT_NORMALS, - EXPORT_UV, - EXPORT_MTL, - EXPORT_APPLY_MODIFIERS, - EXPORT_APPLY_MODIFIERS_RENDER, - EXPORT_BLEN_OBS, - EXPORT_GROUP_BY_OB, - EXPORT_GROUP_BY_MAT, - EXPORT_KEEP_VERT_ORDER, - EXPORT_POLYGROUPS, - EXPORT_CURVE_AS_NURBS, - EXPORT_GLOBAL_MATRIX, - EXPORT_PATH_MODE, - progress, - ) - progress.leave_substeps() - - scene.frame_set(orig_frame, subframe=0.0) - progress.leave_substeps() - - -""" -Currently the exporter lacks these features: -* multiple scene export (only active scene is written) -* particles -""" - - -def save(context, - filepath, - *, - use_triangles=False, - use_edges=True, - use_normals=False, - use_smooth_groups=False, - use_smooth_groups_bitflags=False, - use_uvs=True, - use_materials=True, - use_mesh_modifiers=True, - use_mesh_modifiers_render=False, - use_blen_objects=True, - group_by_object=False, - group_by_material=False, - keep_vertex_order=False, - use_vertex_groups=False, - use_nurbs=True, - use_selection=True, - use_animation=False, - global_matrix=None, - path_mode='AUTO' - ): - - _write(context, filepath, - EXPORT_TRI=use_triangles, - EXPORT_EDGES=use_edges, - EXPORT_SMOOTH_GROUPS=use_smooth_groups, - EXPORT_SMOOTH_GROUPS_BITFLAGS=use_smooth_groups_bitflags, - EXPORT_NORMALS=use_normals, - EXPORT_UV=use_uvs, - EXPORT_MTL=use_materials, - EXPORT_APPLY_MODIFIERS=use_mesh_modifiers, - EXPORT_APPLY_MODIFIERS_RENDER=use_mesh_modifiers_render, - EXPORT_BLEN_OBS=use_blen_objects, - EXPORT_GROUP_BY_OB=group_by_object, - EXPORT_GROUP_BY_MAT=group_by_material, - EXPORT_KEEP_VERT_ORDER=keep_vertex_order, - EXPORT_POLYGROUPS=use_vertex_groups, - EXPORT_CURVE_AS_NURBS=use_nurbs, - EXPORT_SEL_ONLY=use_selection, - EXPORT_ANIMATION=use_animation, - EXPORT_GLOBAL_MATRIX=global_matrix, - EXPORT_PATH_MODE=path_mode, - ) - - return {'FINISHED'} diff --git a/io_scene_obj/import_obj.py b/io_scene_obj/import_obj.py deleted file mode 100644 index 0ba4f898..00000000 --- a/io_scene_obj/import_obj.py +++ /dev/null @@ -1,1323 +0,0 @@ -# ##### 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> - -# Script copyright (C) Campbell Barton -# Contributors: Campbell Barton, Jiri Hnidek, Paolo Ciccone - -""" -This script imports a Wavefront OBJ files to Blender. - -Usage: -Run this script from "File->Import" menu and then load the desired OBJ file. -Note, This loads mesh objects and materials only, nurbs and curves are not supported. - -http://wiki.blender.org/index.php/Scripts/Manual/Import/wavefront_obj -""" - -import array -import os -import time -import bpy -import mathutils - -from bpy_extras.io_utils import unpack_list -from bpy_extras.image_utils import load_image -from bpy_extras.wm_utils.progress_report import ProgressReport - - -def line_value(line_split): - """ - Returns 1 string representing the value for this line - None will be returned if there's only 1 word - """ - length = len(line_split) - if length == 1: - return None - - elif length == 2: - return line_split[1] - - elif length > 2: - return b' '.join(line_split[1:]) - - -def filenames_group_by_ext(line, ext): - """ - Splits material libraries supporting spaces, so: - b'foo bar.mtl baz spam.MTL' -> (b'foo bar.mtl', b'baz spam.MTL') - Also handle " chars (some software use those to protect filenames with spaces, see T67266... sic). - """ - # Note that we assume that if there are some " in that line, - # then all filenames are properly enclosed within those... - start = line.find(b'"') + 1 - if start != 0: - while start != 0: - end = line.find(b'"', start) - if end != -1: - yield line[start:end] - start = line.find(b'"', end + 1) + 1 - else: - break - return - - line_lower = line.lower() - i_prev = 0 - while i_prev != -1 and i_prev < len(line): - i = line_lower.find(ext, i_prev) - if i != -1: - i += len(ext) - yield line[i_prev:i].strip() - i_prev = i - - -def obj_image_load(img_data, context_imagepath_map, line, DIR, recursive, relpath): - """ - Mainly uses comprehensiveImageLoad - But we try all space-separated items from current line when file is not found with last one - (users keep generating/using image files with spaces in a format that does not support them, sigh...) - Also tries to replace '_' with ' ' for Max's exporter replaces spaces with underscores. - Also handle " chars (some software use those to protect filenames with spaces, see T67266... sic). - Also corrects img_data (in case filenames with spaces have been split up in multiple entries, see T72148). - """ - filepath_parts = line.split(b' ') - - start = line.find(b'"') + 1 - if start != 0: - end = line.find(b'"', start) - if end != 0: - filepath_parts = (line[start:end],) - - image = None - for i in range(-1, -len(filepath_parts), -1): - imagepath = os.fsdecode(b" ".join(filepath_parts[i:])) - image = context_imagepath_map.get(imagepath, ...) - if image is ...: - image = load_image(imagepath, DIR, recursive=recursive, relpath=relpath) - if image is None and "_" in imagepath: - image = load_image(imagepath.replace("_", " "), DIR, recursive=recursive, relpath=relpath) - if image is not None: - context_imagepath_map[imagepath] = image - del img_data[i:] - img_data.append(imagepath) - break; - else: - del img_data[i:] - img_data.append(imagepath) - break; - - if image is None: - imagepath = os.fsdecode(filepath_parts[-1]) - image = load_image(imagepath, DIR, recursive=recursive, place_holder=True, relpath=relpath) - context_imagepath_map[imagepath] = image - - return image - - -def create_materials(filepath, relpath, - material_libs, unique_materials, - use_image_search, float_func): - """ - Create all the used materials in this obj, - assign colors and images to the materials from all referenced material libs - """ - from math import sqrt - from bpy_extras import node_shader_utils - - DIR = os.path.dirname(filepath) - context_material_vars = set() - - # Don't load the same image multiple times - context_imagepath_map = {} - - nodal_material_wrap_map = {} - - def load_material_image(blender_material, mat_wrap, context_material_name, img_data, line, type): - """ - Set textures defined in .mtl file. - """ - map_options = {} - - # Absolute path - c:\.. etc would work here - image = obj_image_load(img_data, context_imagepath_map, line, DIR, use_image_search, relpath) - - curr_token = [] - for token in img_data[:-1]: - if token.startswith(b'-') and token[1:].isalpha(): - if curr_token: - map_options[curr_token[0]] = curr_token[1:] - curr_token[:] = [] - curr_token.append(token) - if curr_token: - map_options[curr_token[0]] = curr_token[1:] - - map_offset = map_options.get(b'-o') - map_scale = map_options.get(b'-s') - if map_offset is not None: - map_offset = tuple(map(float_func, map_offset)) - if map_scale is not None: - map_scale = tuple(map(float_func, map_scale)) - - def _generic_tex_set(nodetex, image, texcoords, translation, scale): - nodetex.image = image - nodetex.texcoords = texcoords - if translation is not None: - nodetex.translation = translation - if scale is not None: - nodetex.scale = scale - - # Adds textures for materials (rendering) - if type == 'Kd': - _generic_tex_set(mat_wrap.base_color_texture, image, 'UV', map_offset, map_scale) - - elif type == 'Ka': - # XXX Not supported? - print("WARNING, currently unsupported ambient texture, skipped.") - - elif type == 'Ks': - _generic_tex_set(mat_wrap.specular_texture, image, 'UV', map_offset, map_scale) - - elif type == 'Ke': - _generic_tex_set(mat_wrap.emission_color_texture, image, 'UV', map_offset, map_scale) - mat_wrap.emission_strength = 1.0 - - elif type == 'Bump': - bump_mult = map_options.get(b'-bm') - bump_mult = float(bump_mult[0]) if (bump_mult and len(bump_mult[0]) > 1) else 1.0 - mat_wrap.normalmap_strength_set(bump_mult) - - _generic_tex_set(mat_wrap.normalmap_texture, image, 'UV', map_offset, map_scale) - - elif type == 'D': - _generic_tex_set(mat_wrap.alpha_texture, image, 'UV', map_offset, map_scale) - - elif type == 'disp': - # XXX Not supported? - print("WARNING, currently unsupported displacement texture, skipped.") - # ~ mat_wrap.bump_image_set(image) - # ~ mat_wrap.bump_mapping_set(coords='UV', translation=map_offset, scale=map_scale) - - elif type == 'refl': - map_type = map_options.get(b'-type') - if map_type and map_type != [b'sphere']: - print("WARNING, unsupported reflection type '%s', defaulting to 'sphere'" - "" % ' '.join(i.decode() for i in map_type)) - - _generic_tex_set(mat_wrap.base_color_texture, image, 'Reflection', map_offset, map_scale) - mat_wrap.base_color_texture.projection = 'SPHERE' - - else: - raise Exception("invalid type %r" % type) - - def finalize_material(context_material, context_material_vars, spec_colors, - do_highlight, do_reflection, do_transparency, do_glass): - # Finalize previous mat, if any. - if context_material: - if "specular" in context_material_vars: - # XXX This is highly approximated, not sure whether we can do better... - # TODO: Find a way to guesstimate best value from diffuse color... - # IDEA: Use standard deviation of both spec and diff colors (i.e. how far away they are - # from some grey), and apply the the proportion between those two as tint factor? - spec = sum(spec_colors) / 3.0 - # ~ spec_var = math.sqrt(sum((c - spec) ** 2 for c in spec_color) / 3.0) - # ~ diff = sum(context_mat_wrap.base_color) / 3.0 - # ~ diff_var = math.sqrt(sum((c - diff) ** 2 for c in context_mat_wrap.base_color) / 3.0) - # ~ tint = min(1.0, spec_var / diff_var) - context_mat_wrap.specular = spec - context_mat_wrap.specular_tint = 0.0 - if "roughness" not in context_material_vars: - context_mat_wrap.roughness = 0.0 - - # FIXME, how else to use this? - if do_highlight: - if "specular" not in context_material_vars: - context_mat_wrap.specular = 1.0 - if "roughness" not in context_material_vars: - context_mat_wrap.roughness = 0.0 - else: - if "specular" not in context_material_vars: - context_mat_wrap.specular = 0.0 - if "roughness" not in context_material_vars: - context_mat_wrap.roughness = 1.0 - - if do_reflection: - if "metallic" not in context_material_vars: - context_mat_wrap.metallic = 1.0 - else: - # since we are (ab)using ambient term for metallic (which can be non-zero) - context_mat_wrap.metallic = 0.0 - - if do_transparency: - if "ior" not in context_material_vars: - context_mat_wrap.ior = 1.0 - if "alpha" not in context_material_vars: - context_mat_wrap.alpha = 1.0 - # EEVEE only - context_material.blend_method = 'BLEND' - - if do_glass: - if "ior" not in context_material_vars: - context_mat_wrap.ior = 1.5 - - # Try to find a MTL with the same name as the OBJ if no MTLs are specified. - temp_mtl = os.path.splitext((os.path.basename(filepath)))[0] + ".mtl" - if os.path.exists(os.path.join(DIR, temp_mtl)): - material_libs.add(temp_mtl) - del temp_mtl - - # Create new materials - for name in unique_materials: # .keys() - ma_name = "Default OBJ" if name is None else name.decode('utf-8', "replace") - ma = unique_materials[name] = bpy.data.materials.new(ma_name) - ma_wrap = node_shader_utils.PrincipledBSDFWrapper(ma, is_readonly=False) - nodal_material_wrap_map[ma] = ma_wrap - ma_wrap.use_nodes = True - - for libname in sorted(material_libs): - # print(libname) - mtlpath = os.path.join(DIR, libname) - if not os.path.exists(mtlpath): - print("\tMaterial not found MTL: %r" % mtlpath) - else: - # Note: with modern Principled BSDF shader, things like ambient, raytrace or fresnel are always 'ON' - # (i.e. automatically controlled by other parameters). - do_highlight = False - do_reflection = False - do_transparency = False - do_glass = False - spec_colors = [0.0, 0.0, 0.0] - - # print('\t\tloading mtl: %e' % mtlpath) - context_material = None - context_mat_wrap = None - mtl = open(mtlpath, 'rb') - for line in mtl: # .readlines(): - line = line.strip() - if not line or line.startswith(b'#'): - continue - - line_split = line.split() - line_id = line_split[0].lower() - - if line_id == b'newmtl': - # Finalize previous mat, if any. - finalize_material(context_material, context_material_vars, spec_colors, - do_highlight, do_reflection, do_transparency, do_glass) - - context_material_name = line_value(line_split) - context_material = unique_materials.get(context_material_name) - if context_material is not None: - context_mat_wrap = nodal_material_wrap_map[context_material] - context_material_vars.clear() - - spec_colors[:] = [0.0, 0.0, 0.0] - do_highlight = False - do_reflection = False - do_transparency = False - do_glass = False - - - elif context_material: - def _get_colors(line_split): - # OBJ 'allows' one or two components values, treat single component as greyscale, and two as blue = 0.0. - ln = len(line_split) - if ln == 2: - return [float_func(line_split[1])] * 3 - elif ln == 3: - return [float_func(line_split[1]), float_func(line_split[2]), 0.0] - else: - return [float_func(line_split[1]), float_func(line_split[2]), float_func(line_split[3])] - - # we need to make a material to assign properties to it. - if line_id == b'ka': - refl = sum(_get_colors(line_split)) / 3.0 - context_mat_wrap.metallic = refl - context_material_vars.add("metallic") - elif line_id == b'kd': - context_mat_wrap.base_color = _get_colors(line_split) - elif line_id == b'ks': - spec_colors[:] = _get_colors(line_split) - context_material_vars.add("specular") - elif line_id == b'ke': - # We cannot set context_material.emit right now, we need final diffuse color as well for this. - # XXX Unsupported currently - context_mat_wrap.emission_color = _get_colors(line_split) - context_mat_wrap.emission_strength = 1.0 - elif line_id == b'ns': - # XXX Totally empirical conversion, trying to adapt it - # (from 0.0 - 1000.0 OBJ specular exponent range to 1.0 - 0.0 Principled BSDF range)... - val = max(0.0, min(1000.0, float_func(line_split[1]))) - context_mat_wrap.roughness = 1.0 - (sqrt(val / 1000)) - context_material_vars.add("roughness") - elif line_id == b'ni': # Refraction index (between 0.001 and 10). - context_mat_wrap.ior = float_func(line_split[1]) - context_material_vars.add("ior") - elif line_id == b'd': # dissolve (transparency) - context_mat_wrap.alpha = float_func(line_split[1]) - context_material_vars.add("alpha") - elif line_id == b'tr': # translucency - print("WARNING, currently unsupported 'tr' translucency option, skipped.") - elif line_id == b'tf': - # rgb, filter color, blender has no support for this. - print("WARNING, currently unsupported 'tf' filter color option, skipped.") - elif line_id == b'illum': - # Some MTL files incorrectly use a float for this value, see T60135. - illum = any_number_as_int(line_split[1]) - - # inline comments are from the spec, v4.2 - if illum == 0: - # Color on and Ambient off - print("WARNING, Principled BSDF shader does not support illumination 0 mode " - "(colors with no ambient), skipped.") - elif illum == 1: - # Color on and Ambient on - pass - elif illum == 2: - # Highlight on - do_highlight = True - elif illum == 3: - # Reflection on and Ray trace on - do_reflection = True - elif illum == 4: - # Transparency: Glass on - # Reflection: Ray trace on - do_transparency = True - do_reflection = True - do_glass = True - elif illum == 5: - # Reflection: Fresnel on and Ray trace on - do_reflection = True - elif illum == 6: - # Transparency: Refraction on - # Reflection: Fresnel off and Ray trace on - do_transparency = True - do_reflection = True - elif illum == 7: - # Transparency: Refraction on - # Reflection: Fresnel on and Ray trace on - do_transparency = True - do_reflection = True - elif illum == 8: - # Reflection on and Ray trace off - do_reflection = True - elif illum == 9: - # Transparency: Glass on - # Reflection: Ray trace off - do_transparency = True - do_reflection = False - do_glass = True - elif illum == 10: - # Casts shadows onto invisible surfaces - print("WARNING, Principled BSDF shader does not support illumination 10 mode " - "(cast shadows on invisible surfaces), skipped.") - pass - - elif line_id == b'map_ka': - img_data = line.split()[1:] - if img_data: - load_material_image(context_material, context_mat_wrap, - context_material_name, img_data, line, 'Ka') - elif line_id == b'map_ks': - img_data = line.split()[1:] - if img_data: - load_material_image(context_material, context_mat_wrap, - context_material_name, img_data, line, 'Ks') - elif line_id == b'map_kd': - img_data = line.split()[1:] - if img_data: - load_material_image(context_material, context_mat_wrap, - context_material_name, img_data, line, 'Kd') - elif line_id == b'map_ke': - img_data = line.split()[1:] - if img_data: - load_material_image(context_material, context_mat_wrap, - context_material_name, img_data, line, 'Ke') - elif line_id in {b'map_bump', b'bump'}: # 'bump' is incorrect but some files use it. - img_data = line.split()[1:] - if img_data: - load_material_image(context_material, context_mat_wrap, - context_material_name, img_data, line, 'Bump') - elif line_id in {b'map_d', b'map_tr'}: # Alpha map - Dissolve - img_data = line.split()[1:] - if img_data: - load_material_image(context_material, context_mat_wrap, - context_material_name, img_data, line, 'D') - - elif line_id in {b'map_disp', b'disp'}: # displacementmap - img_data = line.split()[1:] - if img_data: - load_material_image(context_material, context_mat_wrap, - context_material_name, img_data, line, 'disp') - - elif line_id in {b'map_refl', b'refl'}: # reflectionmap - img_data = line.split()[1:] - if img_data: - load_material_image(context_material, context_mat_wrap, - context_material_name, img_data, line, 'refl') - else: - print("WARNING: %r:%r (ignored)" % (filepath, line)) - - # Finalize last mat, if any. - finalize_material(context_material, context_material_vars, spec_colors, - do_highlight, do_reflection, do_transparency, do_glass) - mtl.close() - - -def face_is_edge(face): - """Simple check to test whether given (temp, working) data is an edge, and not a real face.""" - face_vert_loc_indices = face[0] - face_vert_nor_indices = face[1] - return len(face_vert_nor_indices) == 1 or len(face_vert_loc_indices) == 2 - - -def split_mesh(verts_loc, faces, unique_materials, filepath, SPLIT_OB_OR_GROUP): - """ - Takes vert_loc and faces, and separates into multiple sets of - (verts_loc, faces, unique_materials, dataname) - """ - - filename = os.path.splitext((os.path.basename(filepath)))[0] - - if not SPLIT_OB_OR_GROUP or not faces: - use_verts_nor = any(f[1] for f in faces) - use_verts_tex = any(f[2] for f in faces) - # use the filename for the object name since we aren't chopping up the mesh. - return [(verts_loc, faces, unique_materials, filename, use_verts_nor, use_verts_tex)] - - def key_to_name(key): - # if the key is a tuple, join it to make a string - if not key: - return filename # assume its a string. make sure this is true if the splitting code is changed - elif isinstance(key, bytes): - return key.decode('utf-8', 'replace') - else: - return "_".join(k.decode('utf-8', 'replace') for k in key) - - # Return a key that makes the faces unique. - face_split_dict = {} - - oldkey = -1 # initialize to a value that will never match the key - - for face in faces: - (face_vert_loc_indices, - face_vert_nor_indices, - face_vert_tex_indices, - context_material, - _context_smooth_group, - context_object_key, - _face_invalid_blenpoly, - ) = face - key = context_object_key - - if oldkey != key: - # Check the key has changed. - (verts_split, faces_split, unique_materials_split, vert_remap, - use_verts_nor, use_verts_tex) = face_split_dict.setdefault(key, ([], [], {}, {}, [], [])) - oldkey = key - - if not face_is_edge(face): - if not use_verts_nor and face_vert_nor_indices: - use_verts_nor.append(True) - - if not use_verts_tex and face_vert_tex_indices: - use_verts_tex.append(True) - - # Remap verts to new vert list and add where needed - for loop_idx, vert_idx in enumerate(face_vert_loc_indices): - map_index = vert_remap.get(vert_idx) - if map_index is None: - map_index = len(verts_split) - vert_remap[vert_idx] = map_index # set the new remapped index so we only add once and can reference next time. - verts_split.append(verts_loc[vert_idx]) # add the vert to the local verts - - face_vert_loc_indices[loop_idx] = map_index # remap to the local index - - if context_material not in unique_materials_split: - unique_materials_split[context_material] = unique_materials[context_material] - - faces_split.append(face) - - # remove one of the items and reorder - return [(verts_split, faces_split, unique_materials_split, key_to_name(key), bool(use_vnor), bool(use_vtex)) - for key, (verts_split, faces_split, unique_materials_split, _, use_vnor, use_vtex) - in face_split_dict.items()] - - -def create_mesh(new_objects, - use_edges, - verts_loc, - verts_nor, - verts_tex, - faces, - unique_materials, - unique_smooth_groups, - vertex_groups, - dataname, - ): - """ - Takes all the data gathered and generates a mesh, adding the new object to new_objects - deals with ngons, sharp edges and assigning materials - """ - - if unique_smooth_groups: - sharp_edges = set() - smooth_group_users = {context_smooth_group: {} for context_smooth_group in unique_smooth_groups.keys()} - context_smooth_group_old = -1 - - fgon_edges = set() # Used for storing fgon keys when we need to tessellate/untessellate them (ngons with hole). - edges = [] - tot_loops = 0 - - context_object_key = None - - # reverse loop through face indices - for f_idx in range(len(faces) - 1, -1, -1): - face = faces[f_idx] - - (face_vert_loc_indices, - face_vert_nor_indices, - face_vert_tex_indices, - context_material, - context_smooth_group, - context_object_key, - face_invalid_blenpoly, - ) = face - - len_face_vert_loc_indices = len(face_vert_loc_indices) - - if len_face_vert_loc_indices == 1: - faces.pop(f_idx) # cant add single vert faces - - # Face with a single item in face_vert_nor_indices is actually a polyline! - elif face_is_edge(face): - if use_edges: - edges.extend((face_vert_loc_indices[i], face_vert_loc_indices[i + 1]) - for i in range(len_face_vert_loc_indices - 1)) - faces.pop(f_idx) - - else: - # Smooth Group - if unique_smooth_groups and context_smooth_group: - # Is a part of of a smooth group and is a face - if context_smooth_group_old is not context_smooth_group: - edge_dict = smooth_group_users[context_smooth_group] - context_smooth_group_old = context_smooth_group - - prev_vidx = face_vert_loc_indices[-1] - for vidx in face_vert_loc_indices: - edge_key = (prev_vidx, vidx) if (prev_vidx < vidx) else (vidx, prev_vidx) - prev_vidx = vidx - edge_dict[edge_key] = edge_dict.get(edge_key, 0) + 1 - - # NGons into triangles - if face_invalid_blenpoly: - # ignore triangles with invalid indices - if len(face_vert_loc_indices) > 3: - from bpy_extras.mesh_utils import ngon_tessellate - ngon_face_indices = ngon_tessellate(verts_loc, face_vert_loc_indices, debug_print=bpy.app.debug) - faces.extend([([face_vert_loc_indices[ngon[0]], - face_vert_loc_indices[ngon[1]], - face_vert_loc_indices[ngon[2]], - ], - [face_vert_nor_indices[ngon[0]], - face_vert_nor_indices[ngon[1]], - face_vert_nor_indices[ngon[2]], - ] if face_vert_nor_indices else [], - [face_vert_tex_indices[ngon[0]], - face_vert_tex_indices[ngon[1]], - face_vert_tex_indices[ngon[2]], - ] if face_vert_tex_indices else [], - context_material, - context_smooth_group, - context_object_key, - [], - ) - for ngon in ngon_face_indices] - ) - tot_loops += 3 * len(ngon_face_indices) - - # edges to make ngons - if len(ngon_face_indices) > 1: - edge_users = set() - for ngon in ngon_face_indices: - prev_vidx = face_vert_loc_indices[ngon[-1]] - for ngidx in ngon: - vidx = face_vert_loc_indices[ngidx] - if vidx == prev_vidx: - continue # broken OBJ... Just skip. - edge_key = (prev_vidx, vidx) if (prev_vidx < vidx) else (vidx, prev_vidx) - prev_vidx = vidx - if edge_key in edge_users: - fgon_edges.add(edge_key) - else: - edge_users.add(edge_key) - - faces.pop(f_idx) - else: - tot_loops += len_face_vert_loc_indices - - # Build sharp edges - if unique_smooth_groups: - for edge_dict in smooth_group_users.values(): - for key, users in edge_dict.items(): - if users == 1: # This edge is on the boundary of a group - sharp_edges.add(key) - - # map the material names to an index - material_mapping = {name: i for i, name in enumerate(unique_materials)} # enumerate over unique_materials keys() - - materials = [None] * len(unique_materials) - - for name, index in material_mapping.items(): - materials[index] = unique_materials[name] - - me = bpy.data.meshes.new(dataname) - - # make sure the list isn't too big - for material in materials: - me.materials.append(material) - - me.vertices.add(len(verts_loc)) - me.loops.add(tot_loops) - me.polygons.add(len(faces)) - - # verts_loc is a list of (x, y, z) tuples - me.vertices.foreach_set("co", unpack_list(verts_loc)) - - loops_vert_idx = tuple(vidx for (face_vert_loc_indices, _, _, _, _, _, _) in faces for vidx in face_vert_loc_indices) - faces_loop_start = [] - lidx = 0 - for f in faces: - face_vert_loc_indices = f[0] - nbr_vidx = len(face_vert_loc_indices) - faces_loop_start.append(lidx) - lidx += nbr_vidx - faces_loop_total = tuple(len(face_vert_loc_indices) for (face_vert_loc_indices, _, _, _, _, _, _) in faces) - - me.loops.foreach_set("vertex_index", loops_vert_idx) - me.polygons.foreach_set("loop_start", faces_loop_start) - me.polygons.foreach_set("loop_total", faces_loop_total) - - faces_ma_index = tuple(material_mapping[context_material] for (_, _, _, context_material, _, _, _) in faces) - me.polygons.foreach_set("material_index", faces_ma_index) - - faces_use_smooth = tuple(bool(context_smooth_group) for (_, _, _, _, context_smooth_group, _, _) in faces) - me.polygons.foreach_set("use_smooth", faces_use_smooth) - - if verts_nor and me.loops: - # Note: we store 'temp' normals in loops, since validate() may alter final mesh, - # we can only set custom lnors *after* calling it. - me.create_normals_split() - loops_nor = tuple(no for (_, face_vert_nor_indices, _, _, _, _, _) in faces - for face_noidx in face_vert_nor_indices - for no in verts_nor[face_noidx]) - me.loops.foreach_set("normal", loops_nor) - - if verts_tex and me.polygons: - # Some files Do not explicitly write the 'v' value when it's 0.0, see T68249... - verts_tex = [uv if len(uv) == 2 else uv + [0.0] for uv in verts_tex] - me.uv_layers.new(do_init=False) - loops_uv = tuple(uv for (_, _, face_vert_tex_indices, _, _, _, _) in faces - for face_uvidx in face_vert_tex_indices - for uv in verts_tex[face_uvidx]) - me.uv_layers[0].data.foreach_set("uv", loops_uv) - - use_edges = use_edges and bool(edges) - if use_edges: - me.edges.add(len(edges)) - # edges should be a list of (a, b) tuples - me.edges.foreach_set("vertices", unpack_list(edges)) - - me.validate(clean_customdata=False) # *Very* important to not remove lnors here! - me.update(calc_edges=use_edges, calc_edges_loose=use_edges) - - # Un-tessellate as much as possible, in case we had to triangulate some ngons... - if fgon_edges: - import bmesh - bm = bmesh.new() - bm.from_mesh(me) - verts = bm.verts[:] - get = bm.edges.get - edges = [get((verts[vidx1], verts[vidx2])) for vidx1, vidx2 in fgon_edges] - try: - bmesh.ops.dissolve_edges(bm, edges=edges, use_verts=False) - except: - # Possible dissolve fails for some edges, but don't fail silently in case this is a real bug. - import traceback - traceback.print_exc() - - bm.to_mesh(me) - bm.free() - - # XXX If validate changes the geometry, this is likely to be broken... - if unique_smooth_groups and sharp_edges: - for e in me.edges: - if e.key in sharp_edges: - e.use_edge_sharp = True - - if verts_nor: - clnors = array.array('f', [0.0] * (len(me.loops) * 3)) - me.loops.foreach_get("normal", clnors) - - if not unique_smooth_groups: - me.polygons.foreach_set("use_smooth", [True] * len(me.polygons)) - - me.normals_split_custom_set(tuple(zip(*(iter(clnors),) * 3))) - me.use_auto_smooth = True - - ob = bpy.data.objects.new(me.name, me) - new_objects.append(ob) - - # Create the vertex groups. No need to have the flag passed here since we test for the - # content of the vertex_groups. If the user selects to NOT have vertex groups saved then - # the following test will never run - for group_name, group_indices in vertex_groups.items(): - group = ob.vertex_groups.new(name=group_name.decode('utf-8', "replace")) - group.add(group_indices, 1.0, 'REPLACE') - - -def create_nurbs(context_nurbs, vert_loc, new_objects): - """ - Add nurbs object to blender, only support one type at the moment - """ - deg = context_nurbs.get(b'deg', (3,)) - curv_range = context_nurbs.get(b'curv_range') - curv_idx = context_nurbs.get(b'curv_idx', []) - parm_u = context_nurbs.get(b'parm_u', []) - parm_v = context_nurbs.get(b'parm_v', []) - name = context_nurbs.get(b'name', b'ObjNurb') - cstype = context_nurbs.get(b'cstype') - - if cstype is None: - print('\tWarning, cstype not found') - return - if cstype != b'bspline': - print('\tWarning, cstype is not supported (only bspline)') - return - if not curv_idx: - print('\tWarning, curv argument empty or not set') - return - if len(deg) > 1 or parm_v: - print('\tWarning, surfaces not supported') - return - - cu = bpy.data.curves.new(name.decode('utf-8', "replace"), 'CURVE') - cu.dimensions = '3D' - - nu = cu.splines.new('NURBS') - nu.points.add(len(curv_idx) - 1) # a point is added to start with - nu.points.foreach_set("co", [co_axis for vt_idx in curv_idx for co_axis in (vert_loc[vt_idx] + [1.0])]) - - nu.order_u = deg[0] + 1 - - # get for endpoint flag from the weighting - if curv_range and len(parm_u) > deg[0] + 1: - do_endpoints = True - for i in range(deg[0] + 1): - - if abs(parm_u[i] - curv_range[0]) > 0.0001: - do_endpoints = False - break - - if abs(parm_u[-(i + 1)] - curv_range[1]) > 0.0001: - do_endpoints = False - break - - else: - do_endpoints = False - - if do_endpoints: - nu.use_endpoint_u = True - - # close - ''' - do_closed = False - if len(parm_u) > deg[0]+1: - for i in xrange(deg[0]+1): - #print curv_idx[i], curv_idx[-(i+1)] - - if curv_idx[i]==curv_idx[-(i+1)]: - do_closed = True - break - - if do_closed: - nu.use_cyclic_u = True - ''' - - ob = bpy.data.objects.new(name.decode('utf-8', "replace"), cu) - - new_objects.append(ob) - - -def strip_slash(line_split): - if line_split[-1][-1] == 92: # '\' char - if len(line_split[-1]) == 1: - line_split.pop() # remove the \ item - else: - line_split[-1] = line_split[-1][:-1] # remove the \ from the end last number - return True - return False - - -def get_float_func(filepath): - """ - find the float function for this obj file - - whether to replace commas or not - """ - file = open(filepath, 'rb') - for line in file: # .readlines(): - line = line.lstrip() - if line.startswith(b'v'): # vn vt v - if b',' in line: - file.close() - return lambda f: float(f.replace(b',', b'.')) - elif b'.' in line: - file.close() - return float - - file.close() - # in case all vert values were ints - return float - - -def any_number_as_int(svalue): - if b',' in svalue: - svalue = svalue.replace(b',', b'.') - return int(float(svalue)) - - -def load(context, - filepath, - *, - global_clamp_size=0.0, - use_smooth_groups=True, - use_edges=True, - use_split_objects=True, - use_split_groups=False, - use_image_search=True, - use_groups_as_vgroups=False, - relpath=None, - global_matrix=None - ): - """ - Called by the user interface or another script. - load_obj(path) - should give acceptable results. - This function passes the file and sends the data off - to be split into objects and then converted into mesh objects - """ - def unique_name(existing_names, name_orig): - i = 0 - if name_orig is None: - name_orig = b"ObjObject" - name = name_orig - while name in existing_names: - name = b"%s.%03d" % (name_orig, i) - i += 1 - existing_names.add(name) - return name - - def handle_vec(line_start, context_multi_line, line_split, tag, data, vec, vec_len): - ret_context_multi_line = tag if strip_slash(line_split) else b'' - if line_start == tag: - vec[:] = [float_func(v) for v in line_split[1:]] - elif context_multi_line == tag: - vec += [float_func(v) for v in line_split] - if not ret_context_multi_line: - data.append(tuple(vec[:vec_len])) - return ret_context_multi_line - - def create_face(context_material, context_smooth_group, context_object_key): - face_vert_loc_indices = [] - face_vert_nor_indices = [] - face_vert_tex_indices = [] - return ( - face_vert_loc_indices, - face_vert_nor_indices, - face_vert_tex_indices, - context_material, - context_smooth_group, - context_object_key, - [], # If non-empty, that face is a Blender-invalid ngon (holes...), need a mutable object for that... - ) - - with ProgressReport(context.window_manager) as progress: - progress.enter_substeps(1, "Importing OBJ %r..." % filepath) - - if global_matrix is None: - global_matrix = mathutils.Matrix() - - if use_split_objects or use_split_groups: - use_groups_as_vgroups = False - - verts_loc = [] - verts_nor = [] - verts_tex = [] - faces = [] # tuples of the faces - material_libs = set() # filenames to material libs this OBJ uses - vertex_groups = {} # when use_groups_as_vgroups is true - - # Get the string to float conversion func for this file- is 'float' for almost all files. - float_func = get_float_func(filepath) - - # Context variables - context_material = None - context_smooth_group = None - context_object_key = None - context_object_obpart = None - context_vgroup = None - - objects_names = set() - - # Nurbs - context_nurbs = {} - nurbs = [] - context_parm = b'' # used by nurbs too but could be used elsewhere - - # Until we can use sets - use_default_material = False - unique_materials = {} - unique_smooth_groups = {} - # unique_obects= {} - no use for this variable since the objects are stored in the face. - - # when there are faces that end with \ - # it means they are multiline- - # since we use xreadline we cant skip to the next line - # so we need to know whether - context_multi_line = b'' - - # Per-face handling data. - face_vert_loc_indices = None - face_vert_nor_indices = None - face_vert_tex_indices = None - verts_loc_len = verts_nor_len = verts_tex_len = 0 - face_items_usage = set() - face_invalid_blenpoly = None - prev_vidx = None - face = None - vec = [] - - quick_vert_failures = 0 - skip_quick_vert = False - - progress.enter_substeps(3, "Parsing OBJ file...") - with open(filepath, 'rb') as f: - for line in f: - line_split = line.split() - - if not line_split: - continue - - line_start = line_split[0] # we compare with this a _lot_ - - if len(line_split) == 1 and not context_multi_line and line_start != b'end': - print("WARNING, skipping malformatted line: %s" % line.decode('UTF-8', 'replace').rstrip()) - continue - - # Handling vertex data are pretty similar, factorize that. - # Also, most OBJ files store all those on a single line, so try fast parsing for that first, - # and only fallback to full multi-line parsing when needed, this gives significant speed-up - # (~40% on affected code). - if line_start == b'v': - vdata, vdata_len, do_quick_vert = verts_loc, 3, not skip_quick_vert - elif line_start == b'vn': - vdata, vdata_len, do_quick_vert = verts_nor, 3, not skip_quick_vert - elif line_start == b'vt': - vdata, vdata_len, do_quick_vert = verts_tex, 2, not skip_quick_vert - elif context_multi_line == b'v': - vdata, vdata_len, do_quick_vert = verts_loc, 3, False - elif context_multi_line == b'vn': - vdata, vdata_len, do_quick_vert = verts_nor, 3, False - elif context_multi_line == b'vt': - vdata, vdata_len, do_quick_vert = verts_tex, 2, False - else: - vdata_len = 0 - - if vdata_len: - if do_quick_vert: - try: - vdata.append(list(map(float_func, line_split[1:vdata_len + 1]))) - except: - do_quick_vert = False - # In case we get too many failures on quick parsing, force fallback to full multi-line one. - # Exception handling can become costly... - quick_vert_failures += 1 - if quick_vert_failures > 10000: - skip_quick_vert = True - if not do_quick_vert: - context_multi_line = handle_vec(line_start, context_multi_line, line_split, - context_multi_line or line_start, - vdata, vec, vdata_len) - - elif line_start == b'f' or context_multi_line == b'f': - if not context_multi_line: - line_split = line_split[1:] - # Instantiate a face - face = create_face(context_material, context_smooth_group, context_object_key) - (face_vert_loc_indices, face_vert_nor_indices, face_vert_tex_indices, - _1, _2, _3, face_invalid_blenpoly) = face - faces.append(face) - face_items_usage.clear() - verts_loc_len = len(verts_loc) - verts_nor_len = len(verts_nor) - verts_tex_len = len(verts_tex) - if context_material is None: - use_default_material = True - # Else, use face_vert_loc_indices and face_vert_tex_indices previously defined and used the obj_face - - context_multi_line = b'f' if strip_slash(line_split) else b'' - - for v in line_split: - obj_vert = v.split(b'/') - idx = int(obj_vert[0]) # Note that we assume here we cannot get OBJ invalid 0 index... - vert_loc_index = (idx + verts_loc_len) if (idx < 1) else idx - 1 - # Add the vertex to the current group - # *warning*, this wont work for files that have groups defined around verts - if use_groups_as_vgroups and context_vgroup: - vertex_groups[context_vgroup].append(vert_loc_index) - # This a first round to quick-detect ngons that *may* use a same edge more than once. - # Potential candidate will be re-checked once we have done parsing the whole face. - if not face_invalid_blenpoly: - # If we use more than once a same vertex, invalid ngon is suspected. - if vert_loc_index in face_items_usage: - face_invalid_blenpoly.append(True) - else: - face_items_usage.add(vert_loc_index) - face_vert_loc_indices.append(vert_loc_index) - - # formatting for faces with normals and textures is - # loc_index/tex_index/nor_index - if len(obj_vert) > 1 and obj_vert[1] and obj_vert[1] != b'0': - idx = int(obj_vert[1]) - face_vert_tex_indices.append((idx + verts_tex_len) if (idx < 1) else idx - 1) - else: - face_vert_tex_indices.append(0) - - if len(obj_vert) > 2 and obj_vert[2] and obj_vert[2] != b'0': - idx = int(obj_vert[2]) - face_vert_nor_indices.append((idx + verts_nor_len) if (idx < 1) else idx - 1) - else: - face_vert_nor_indices.append(0) - - if not context_multi_line: - # Means we have finished a face, we have to do final check if ngon is suspected to be blender-invalid... - if face_invalid_blenpoly: - face_invalid_blenpoly.clear() - face_items_usage.clear() - prev_vidx = face_vert_loc_indices[-1] - for vidx in face_vert_loc_indices: - edge_key = (prev_vidx, vidx) if (prev_vidx < vidx) else (vidx, prev_vidx) - if edge_key in face_items_usage: - face_invalid_blenpoly.append(True) - break - face_items_usage.add(edge_key) - prev_vidx = vidx - - elif use_edges and (line_start == b'l' or context_multi_line == b'l'): - # very similar to the face load function above with some parts removed - if not context_multi_line: - line_split = line_split[1:] - # Instantiate a face - face = create_face(context_material, context_smooth_group, context_object_key) - face_vert_loc_indices = face[0] - # XXX A bit hackish, we use special 'value' of face_vert_nor_indices (a single True item) to tag this - # as a polyline, and not a regular face... - face[1][:] = [True] - faces.append(face) - if context_material is None: - use_default_material = True - # Else, use face_vert_loc_indices previously defined and used the obj_face - - context_multi_line = b'l' if strip_slash(line_split) else b'' - - for v in line_split: - obj_vert = v.split(b'/') - idx = int(obj_vert[0]) - 1 - face_vert_loc_indices.append((idx + len(verts_loc) + 1) if (idx < 0) else idx) - - elif line_start == b's': - if use_smooth_groups: - context_smooth_group = line_value(line_split) - if context_smooth_group == b'off': - context_smooth_group = None - elif context_smooth_group: # is not None - unique_smooth_groups[context_smooth_group] = None - - elif line_start == b'o': - if use_split_objects: - context_object_key = unique_name(objects_names, line_value(line_split)) - context_object_obpart = context_object_key - # unique_objects[context_object_key]= None - - elif line_start == b'g': - if use_split_groups: - grppart = line_value(line_split) - context_object_key = (context_object_obpart, grppart) if context_object_obpart else grppart - # print 'context_object_key', context_object_key - # unique_objects[context_object_key]= None - elif use_groups_as_vgroups: - context_vgroup = line_value(line.split()) - if context_vgroup and context_vgroup != b'(null)': - vertex_groups.setdefault(context_vgroup, []) - else: - context_vgroup = None # dont assign a vgroup - - elif line_start == b'usemtl': - context_material = line_value(line.split()) - unique_materials[context_material] = None - elif line_start == b'mtllib': # usemap or usemat - # can have multiple mtllib filenames per line, mtllib can appear more than once, - # so make sure only occurrence of material exists - material_libs |= {os.fsdecode(f) for f in filenames_group_by_ext(line.lstrip()[7:].strip(), b'.mtl') - } - - # Nurbs support - elif line_start == b'cstype': - context_nurbs[b'cstype'] = line_value(line.split()) # 'rat bspline' / 'bspline' - elif line_start == b'curv' or context_multi_line == b'curv': - curv_idx = context_nurbs[b'curv_idx'] = context_nurbs.get(b'curv_idx', []) # in case were multiline - - if not context_multi_line: - context_nurbs[b'curv_range'] = float_func(line_split[1]), float_func(line_split[2]) - line_split[0:3] = [] # remove first 3 items - - if strip_slash(line_split): - context_multi_line = b'curv' - else: - context_multi_line = b'' - - for i in line_split: - vert_loc_index = int(i) - 1 - - if vert_loc_index < 0: - vert_loc_index = len(verts_loc) + vert_loc_index + 1 - - curv_idx.append(vert_loc_index) - - elif line_start == b'parm' or context_multi_line == b'parm': - if context_multi_line: - context_multi_line = b'' - else: - context_parm = line_split[1] - line_split[0:2] = [] # remove first 2 - - if strip_slash(line_split): - context_multi_line = b'parm' - else: - context_multi_line = b'' - - if context_parm.lower() == b'u': - context_nurbs.setdefault(b'parm_u', []).extend([float_func(f) for f in line_split]) - elif context_parm.lower() == b'v': # surfaces not supported yet - context_nurbs.setdefault(b'parm_v', []).extend([float_func(f) for f in line_split]) - # else: # may want to support other parm's ? - - elif line_start == b'deg': - context_nurbs[b'deg'] = [int(i) for i in line.split()[1:]] - elif line_start == b'end': - # Add the nurbs curve - if context_object_key: - context_nurbs[b'name'] = context_object_key - nurbs.append(context_nurbs) - context_nurbs = {} - context_parm = b'' - - ''' # How to use usemap? deprecated? - elif line_start == b'usema': # usemap or usemat - context_image= line_value(line_split) - ''' - - progress.step("Done, loading materials and images...") - - if use_default_material: - unique_materials[None] = None - create_materials(filepath, relpath, material_libs, unique_materials, - use_image_search, float_func) - - progress.step("Done, building geometries (verts:%i faces:%i materials: %i smoothgroups:%i) ..." % - (len(verts_loc), len(faces), len(unique_materials), len(unique_smooth_groups))) - - # deselect all - if bpy.ops.object.select_all.poll(): - bpy.ops.object.select_all(action='DESELECT') - - new_objects = [] # put new objects here - - # Split the mesh by objects/materials, may - SPLIT_OB_OR_GROUP = bool(use_split_objects or use_split_groups) - - for data in split_mesh(verts_loc, faces, unique_materials, filepath, SPLIT_OB_OR_GROUP): - verts_loc_split, faces_split, unique_materials_split, dataname, use_vnor, use_vtex = data - # Create meshes from the data, warning 'vertex_groups' wont support splitting - #~ print(dataname, use_vnor, use_vtex) - create_mesh(new_objects, - use_edges, - verts_loc_split, - verts_nor if use_vnor else [], - verts_tex if use_vtex else [], - faces_split, - unique_materials_split, - unique_smooth_groups, - vertex_groups, - dataname, - ) - - # nurbs support - for context_nurbs in nurbs: - create_nurbs(context_nurbs, verts_loc, new_objects) - - view_layer = context.view_layer - collection = view_layer.active_layer_collection.collection - - # Create new obj - for obj in new_objects: - collection.objects.link(obj) - obj.select_set(True) - - # we could apply this anywhere before scaling. - obj.matrix_world = global_matrix - - view_layer.update() - - axis_min = [1000000000] * 3 - axis_max = [-1000000000] * 3 - - if global_clamp_size: - # Get all object bounds - for ob in new_objects: - for v in ob.bound_box: - for axis, value in enumerate(v): - if axis_min[axis] > value: - axis_min[axis] = value - if axis_max[axis] < value: - axis_max[axis] = value - - # Scale objects - max_axis = max(axis_max[0] - axis_min[0], axis_max[1] - axis_min[1], axis_max[2] - axis_min[2]) - scale = 1.0 - - while global_clamp_size < max_axis * scale: - scale = scale / 10.0 - - for obj in new_objects: - obj.scale = scale, scale, scale - - progress.leave_substeps("Done.") - progress.leave_substeps("Finished importing: %r" % filepath) - - return {'FINISHED'} |