# ##### 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>

__author__= "Campbell Barton", "Jiri Hnidek", "Paolo Ciccone"
__url__= ['http://wiki.blender.org/index.php/Scripts/Manual/Import/wavefront_obj', 'blender.org', 'blenderartists.org']
__version__= "2.11"

__bpydoc__= """\
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.
"""

import os
import time
import bpy
import mathutils
from geometry import PolyFill

def unpack_list(list_of_tuples):
    l = []
    for t in list_of_tuples:
        l.extend(t)
    return l

# same as above except that it adds 0 for triangle faces
def unpack_face_list(list_of_tuples):
    # allocate the entire list
    flat_ls = [0] * (len(list_of_tuples) * 4)
    i = 0

    for t in list_of_tuples:
        if len(t) == 3:
            if t[2] == 0:
                t = t[1], t[2], t[0]
        else: # assuem quad
            if t[3] == 0 or t[2] == 0:
                t = t[2], t[3], t[0], t[1]

        flat_ls[i:i + len(t)] = t
        i += 4
    return flat_ls

def BPyMesh_ngon(from_data, indices, PREF_FIX_LOOPS= True):
    '''
    Takes a polyline of indices (fgon)
    and returns a list of face indicie lists.
    Designed to be used for importers that need indices for an fgon to create from existing verts.

    from_data: either a mesh, or a list/tuple of vectors.
    indices: a list of indicies to use this list is the ordered closed polyline to fill, and can be a subset of the data given.
    PREF_FIX_LOOPS: If this is enabled polylines that use loops to make multiple polylines are delt with correctly.
    '''

    if not set: # Need sets for this, otherwise do a normal fill.
        PREF_FIX_LOOPS= False

    Vector= mathutils.Vector
    if not indices:
        return []

    #	return []
    def rvec(co): return round(co.x, 6), round(co.y, 6), round(co.z, 6)
    def mlen(co): return abs(co[0])+abs(co[1])+abs(co[2]) # manhatten length of a vector, faster then length

    def vert_treplet(v, i):
        return v, rvec(v), i, mlen(v)

    def ed_key_mlen(v1, v2):
        if v1[3] > v2[3]:
            return v2[1], v1[1]
        else:
            return v1[1], v2[1]


    if not PREF_FIX_LOOPS:
        '''
        Normal single concave loop filling
        '''
        if type(from_data) in (tuple, list):
            verts= [Vector(from_data[i]) for ii, i in enumerate(indices)]
        else:
            verts= [from_data.vertices[i].co for ii, i in enumerate(indices)]

        for i in range(len(verts)-1, 0, -1): # same as reversed(xrange(1, len(verts))):
            if verts[i][1]==verts[i-1][0]:
                verts.pop(i-1)

        fill= PolyFill([verts])

    else:
        '''
        Seperate this loop into multiple loops be finding edges that are used twice
        This is used by lightwave LWO files a lot
        '''

        if type(from_data) in (tuple, list):
            verts= [vert_treplet(Vector(from_data[i]), ii) for ii, i in enumerate(indices)]
        else:
            verts= [vert_treplet(from_data.vertices[i].co, ii) for ii, i in enumerate(indices)]

        edges= [(i, i-1) for i in range(len(verts))]
        if edges:
            edges[0]= (0,len(verts)-1)

        if not verts:
            return []


        edges_used= set()
        edges_doubles= set()
        # We need to check if any edges are used twice location based.
        for ed in edges:
            edkey= ed_key_mlen(verts[ed[0]], verts[ed[1]])
            if edkey in edges_used:
                edges_doubles.add(edkey)
            else:
                edges_used.add(edkey)

        # Store a list of unconnected loop segments split by double edges.
        # will join later
        loop_segments= []

        v_prev= verts[0]
        context_loop= [v_prev]
        loop_segments= [context_loop]

        for v in verts:
            if v!=v_prev:
                # Are we crossing an edge we removed?
                if ed_key_mlen(v, v_prev) in edges_doubles:
                    context_loop= [v]
                    loop_segments.append(context_loop)
                else:
                    if context_loop and context_loop[-1][1]==v[1]:
                        #raise "as"
                        pass
                    else:
                        context_loop.append(v)

                v_prev= v
        # Now join loop segments

        def join_seg(s1,s2):
            if s2[-1][1]==s1[0][1]: #
                s1,s2= s2,s1
            elif s1[-1][1]==s2[0][1]:
                pass
            else:
                return False

            # If were stuill here s1 and s2 are 2 segments in the same polyline
            s1.pop() # remove the last vert from s1
            s1.extend(s2) # add segment 2 to segment 1

            if s1[0][1]==s1[-1][1]: # remove endpoints double
                s1.pop()

            s2[:]= [] # Empty this segment s2 so we dont use it again.
            return True

        joining_segments= True
        while joining_segments:
            joining_segments= False
            segcount= len(loop_segments)

            for j in range(segcount-1, -1, -1): #reversed(range(segcount)):
                seg_j= loop_segments[j]
                if seg_j:
                    for k in range(j-1, -1, -1): # reversed(range(j)):
                        if not seg_j:
                            break
                        seg_k= loop_segments[k]

                        if seg_k and join_seg(seg_j, seg_k):
                            joining_segments= True

        loop_list= loop_segments

        for verts in loop_list:
            while verts and verts[0][1]==verts[-1][1]:
                verts.pop()

        loop_list= [verts for verts in loop_list if len(verts)>2]
        # DONE DEALING WITH LOOP FIXING


        # vert mapping
        vert_map= [None]*len(indices)
        ii=0
        for verts in loop_list:
            if len(verts)>2:
                for i, vert in enumerate(verts):
                    vert_map[i+ii]= vert[2]
                ii+=len(verts)

        fill= PolyFill([ [v[0] for v in loop] for loop in loop_list ])
        #draw_loops(loop_list)
        #raise 'done loop'
        # map to original indicies
        fill= [[vert_map[i] for i in reversed(f)] for f in fill]


    if not fill:
        print('Warning Cannot scanfill, fallback on a triangle fan.')
        fill= [ [0, i-1, i] for i in range(2, len(indices)) ]
    else:
        # Use real scanfill.
        # See if its flipped the wrong way.
        flip= None
        for fi in fill:
            if flip != None:
                break
            for i, vi in enumerate(fi):
                if vi==0 and fi[i-1]==1:
                    flip= False
                    break
                elif vi==1 and fi[i-1]==0:
                    flip= True
                    break

        if not flip:
            for i, fi in enumerate(fill):
                fill[i]= tuple([ii for ii in reversed(fi)])

    return fill

def line_value(line_split):
    '''
    Returns 1 string represneting the value for this line
    None will be returned if theres only 1 word
    '''
    length= len(line_split)
    if length == 1:
        return None

    elif length == 2:
        return line_split[1]

    elif length > 2:
        return ' '.join( line_split[1:] )

# limited replacement for BPyImage.comprehensiveImageLoad
def load_image(imagepath, dirname):

    if os.path.exists(imagepath):
        return bpy.data.images.load(imagepath)

    variants = [imagepath, os.path.join(dirname, imagepath), os.path.join(dirname, os.path.basename(imagepath))]

    for filepath in variants:
        for nfilepath in (filepath, bpy.path.resolve_ncase(filepath)):
            if os.path.exists(nfilepath):
                return bpy.data.images.load(nfilepath)

    # TODO comprehensiveImageLoad also searched in bpy.config.textureDir
    return None

def obj_image_load(imagepath, DIR, IMAGE_SEARCH):
    if '_' in imagepath:
        image= load_image(imagepath.replace('_', ' '), DIR)
        if image:
            return image

    image = load_image(imagepath, DIR)
    if image:
        return image

    print("failed to load '%s' doesn't exist", imagepath)
    return None

# def obj_image_load(imagepath, DIR, IMAGE_SEARCH):
# 	'''
# 	Mainly uses comprehensiveImageLoad
# 	but tries to replace '_' with ' ' for Max's exporter replaces spaces with underscores.
# 	'''

# 	if '_' in imagepath:
# 		image= BPyImage.comprehensiveImageLoad(imagepath, DIR, PLACE_HOLDER= False, RECURSIVE= IMAGE_SEARCH)
# 		if image: return image
# 		# Did the exporter rename the image?
# 		image= BPyImage.comprehensiveImageLoad(imagepath.replace('_', ' '), DIR, PLACE_HOLDER= False, RECURSIVE= IMAGE_SEARCH)
# 		if image: return image

# 	# Return an image, placeholder if it dosnt exist
# 	image= BPyImage.comprehensiveImageLoad(imagepath, DIR, PLACE_HOLDER= True, RECURSIVE= IMAGE_SEARCH)
# 	return image


def create_materials(filepath, material_libs, unique_materials, unique_material_images, IMAGE_SEARCH):
    '''
    Create all the used materials in this obj,
    assign colors and images to the materials from all referenced material libs
    '''
    DIR= os.path.dirname(filepath)

    #==================================================================================#
    # This function sets textures defined in .mtl file                                 #
    #==================================================================================#
    def load_material_image(blender_material, context_material_name, imagepath, type):

        texture= bpy.data.textures.new(name=type, type='IMAGE')

        # Absolute path - c:\.. etc would work here
        image = obj_image_load(imagepath, DIR, IMAGE_SEARCH)
        has_data = False

        if image:
            texture.image = image
            has_data = image.has_data

        # Adds textures for materials (rendering)
        if type == 'Kd':
            if has_data and image.depth == 32:
                # Image has alpha

                # XXX bitmask won't work?
                blender_material.add_texture(texture, 'UV', {'COLOR', 'ALPHA'})
                texture.mipmap = True
                texture.interpolation = True
                texture.use_alpha = True
                blender_material.use_transparency = True
                blender_material.alpha = 0.0
            else:
                blender_material.add_texture(texture, 'UV', 'COLOR')

            # adds textures to faces (Textured/Alt-Z mode)
            # Only apply the diffuse texture to the face if the image has not been set with the inline usemat func.
            unique_material_images[context_material_name]= image, has_data # set the texface image

        elif type == 'Ka':
            blender_material.add_texture(texture, 'UV', 'AMBIENT')
# 			blender_material.setTexture(1, texture, Texture.TexCo.UV, Texture.MapTo.CMIR) # TODO- Add AMB to BPY API

        elif type == 'Ks':
            blender_material.add_texture(texture, 'UV', 'SPECULARITY')
# 			blender_material.setTexture(2, texture, Texture.TexCo.UV, Texture.MapTo.SPEC)

        elif type == 'Bump':
            blender_material.add_texture(texture, 'UV', 'NORMAL')
# 			blender_material.setTexture(3, texture, Texture.TexCo.UV, Texture.MapTo.NOR)
        elif type == 'D':
            blender_material.add_texture(texture, 'UV', 'ALPHA')
            blender_material.z_transparency = True
            blender_material.alpha = 0.0
# 			blender_material.setTexture(4, texture, Texture.TexCo.UV, Texture.MapTo.ALPHA)
# 			blender_material.mode |= Material.Modes.ZTRANSP
# 			blender_material.alpha = 0.0
            # Todo, unset deffuse material alpha if it has an alpha channel

        elif type == 'refl':
            blender_material.add_texture(texture, 'UV', 'REFLECTION')
# 			blender_material.setTexture(5, texture, Texture.TexCo.UV, Texture.MapTo.REF)


    # Add an MTL with the same name as the obj if no MTLs are spesified.
    temp_mtl = os.path.splitext((os.path.basename(filepath)))[0] + '.mtl'

    if os.path.exists(os.path.join(DIR, temp_mtl)) and temp_mtl not in material_libs:
        material_libs.append( temp_mtl )
    del temp_mtl

    #Create new materials
    for name in unique_materials: # .keys()
        if name != None:
            unique_materials[name]= bpy.data.materials.new(name)
            unique_material_images[name]= None, False # assign None to all material images to start with, add to later.

    unique_materials[None]= None
    unique_material_images[None]= None, False

    for libname in material_libs:
        mtlpath= os.path.join(DIR, libname)
        if not os.path.exists(mtlpath):
            print ("\tError Missing MTL: '%s'" % mtlpath)
        else:
            #print '\t\tloading mtl: "%s"' % mtlpath
            context_material= None
            mtl= open(mtlpath, 'rU')
            for line in mtl: #.xreadlines():
                if line.startswith('newmtl'):
                    context_material_name= line_value(line.split())
                    if context_material_name in unique_materials:
                        context_material = unique_materials[ context_material_name ]
                    else:
                        context_material = None

                elif context_material:
                    # we need to make a material to assign properties to it.
                    line_split= line.split()
                    line_lower= line.lower().lstrip()
                    if line_lower.startswith('ka'):
                        context_material.mirror_color = (float(line_split[1]), float(line_split[2]), float(line_split[3]))
                    elif line_lower.startswith('kd'):
                        context_material.diffuse_color = (float(line_split[1]), float(line_split[2]), float(line_split[3]))
                    elif line_lower.startswith('ks'):
                        context_material.specular_color = (float(line_split[1]), float(line_split[2]), float(line_split[3]))
                    elif line_lower.startswith('ns'):
                        context_material.specular_hardness = int((float(line_split[1])*0.51))
                    elif line_lower.startswith('ni'): # Refraction index
                        context_material.raytrace_transparency.ior = max(1, min(float(line_split[1]), 3)) # Between 1 and 3
                    elif line_lower.startswith('d') or line_lower.startswith('tr'):
                        context_material.alpha = float(line_split[1])
                    elif line_lower.startswith('map_ka'):
                        img_filepath= line_value(line.split())
                        if img_filepath:
                            load_material_image(context_material, context_material_name, img_filepath, 'Ka')
                    elif line_lower.startswith('map_ks'):
                        img_filepath= line_value(line.split())
                        if img_filepath:
                            load_material_image(context_material, context_material_name, img_filepath, 'Ks')
                    elif line_lower.startswith('map_kd'):
                        img_filepath= line_value(line.split())
                        if img_filepath:
                            load_material_image(context_material, context_material_name, img_filepath, 'Kd')
                    elif line_lower.startswith('map_bump'):
                        img_filepath= line_value(line.split())
                        if img_filepath:
                            load_material_image(context_material, context_material_name, img_filepath, 'Bump')
                    elif line_lower.startswith('map_d') or line_lower.startswith('map_tr'): # Alpha map - Dissolve
                        img_filepath= line_value(line.split())
                        if img_filepath:
                            load_material_image(context_material, context_material_name, img_filepath, 'D')

                    elif line_lower.startswith('refl'): # Reflectionmap
                        img_filepath= line_value(line.split())
                        if img_filepath:
                            load_material_image(context_material, context_material_name, img_filepath, 'refl')
            mtl.close()




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:
        # use the filename for the object name since we arnt chopping up the mesh.
        return [(verts_loc, faces, unique_materials, filename)]

    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
        else:
            return 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:
        key= face[4]

        if oldkey != key:
            # Check the key has changed.
            try:
                verts_split, faces_split, unique_materials_split, vert_remap= face_split_dict[key]
            except KeyError:
                faces_split= []
                verts_split= []
                unique_materials_split= {}
                vert_remap= [-1]*len(verts_loc)

                face_split_dict[key]= (verts_split, faces_split, unique_materials_split, vert_remap)

            oldkey= key

        face_vert_loc_indicies= face[0]

        # Remap verts to new vert list and add where needed
        for enum, i in enumerate(face_vert_loc_indicies):
            if vert_remap[i] == -1:
                new_index= len(verts_split)
                vert_remap[i]= new_index # set the new remapped index so we only add once and can reference next time.
                face_vert_loc_indicies[enum] = new_index # remap to the local index
                verts_split.append( verts_loc[i] ) # add the vert to the local verts
            else:
                face_vert_loc_indicies[enum] = vert_remap[i] # remap to the local index

            matname= face[2]
            if matname and matname not in unique_materials_split:
                unique_materials_split[matname] = unique_materials[matname]

        faces_split.append(face)

    # remove one of the itemas and reorder
    return [(value[0], value[1], value[2], key_to_name(key)) for key, value in list(face_split_dict.items())]


def create_mesh(new_objects, has_ngons, CREATE_FGONS, CREATE_EDGES, verts_loc, verts_tex, faces, unique_materials, unique_material_images, unique_smooth_groups, vertex_groups, dataname):
    '''
    Takes all the data gathered and generates a mesh, adding the new object to new_objects
    deals with fgons, sharp edges and assigning materials
    '''
    if not has_ngons:
        CREATE_FGONS= False

    if unique_smooth_groups:
        sharp_edges= {}
        smooth_group_users = {context_smooth_group: {} for context_smooth_group in list(unique_smooth_groups.keys())}
        context_smooth_group_old= -1

    # Split fgons into tri's
    fgon_edges= {} # Used for storing fgon keys
    if CREATE_EDGES:
        edges= []

    context_object= None

    # reverse loop through face indicies
    for f_idx in range(len(faces)-1, -1, -1):

        face_vert_loc_indicies,\
        face_vert_tex_indicies,\
        context_material,\
        context_smooth_group,\
        context_object= faces[f_idx]

        len_face_vert_loc_indicies = len(face_vert_loc_indicies)

        if len_face_vert_loc_indicies==1:
            faces.pop(f_idx)# cant add single vert faces

        elif not face_vert_tex_indicies or len_face_vert_loc_indicies == 2: # faces that have no texture coords are lines
            if CREATE_EDGES:
                # generators are better in python 2.4+ but can't be used in 2.3
                # edges.extend( (face_vert_loc_indicies[i], face_vert_loc_indicies[i+1]) for i in xrange(len_face_vert_loc_indicies-1) )
                edges.extend( [(face_vert_loc_indicies[i], face_vert_loc_indicies[i+1]) for i in range(len_face_vert_loc_indicies-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

                for i in range(len_face_vert_loc_indicies):
                    i1= face_vert_loc_indicies[i]
                    i2= face_vert_loc_indicies[i-1]
                    if i1>i2: i1,i2= i2,i1

                    try:
                        edge_dict[i1,i2]+= 1
                    except KeyError:
                        edge_dict[i1,i2]=  1

            # FGons into triangles
            if has_ngons and len_face_vert_loc_indicies > 4:

                ngon_face_indices= BPyMesh_ngon(verts_loc, face_vert_loc_indicies)
                faces.extend(
                    [(
                    [face_vert_loc_indicies[ngon[0]], face_vert_loc_indicies[ngon[1]], face_vert_loc_indicies[ngon[2]] ],
                    [face_vert_tex_indicies[ngon[0]], face_vert_tex_indicies[ngon[1]], face_vert_tex_indicies[ngon[2]] ],
                    context_material,
                    context_smooth_group,
                    context_object)
                    for ngon in ngon_face_indices]
                )

                # edges to make fgons
                if CREATE_FGONS:
                    edge_users= {}
                    for ngon in ngon_face_indices:
                        for i in (0,1,2):
                            i1= face_vert_loc_indicies[ngon[i  ]]
                            i2= face_vert_loc_indicies[ngon[i-1]]
                            if i1>i2: i1,i2= i2,i1

                            try:
                                edge_users[i1,i2]+=1
                            except KeyError:
                                edge_users[i1,i2]= 1

                    for key, users in edge_users.items():
                        if users>1:
                            fgon_edges[key]= None

                # remove all after 3, means we dont have to pop this one.
                faces.pop(f_idx)


    # Build sharp edges
    if unique_smooth_groups:
        for edge_dict in list(smooth_group_users.values()):
            for key, users in list(edge_dict.items()):
                if users==1: # This edge is on the boundry of a group
                    sharp_edges[key]= None


    # 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 list(material_mapping.items()):
        materials[index]= unique_materials[name]

    me= bpy.data.meshes.new(dataname)

    # make sure the list isnt too big
    for material in materials:
        me.materials.link(material)

    me.vertices.add(len(verts_loc))
    me.faces.add(len(faces))

    # verts_loc is a list of (x, y, z) tuples
    me.vertices.foreach_set("co", unpack_list(verts_loc))

    # faces is a list of (vert_indices, texco_indices, ...) tuples
    # XXX faces should contain either 3 or 4 verts
    # XXX no check for valid face indices
    me.faces.foreach_set("vertices_raw", unpack_face_list([f[0] for f in faces]))

    if verts_tex and me.faces:
        me.uv_textures.new()

    context_material_old= -1 # avoid a dict lookup
    mat= 0 # rare case it may be un-initialized.
    me_faces= me.faces

    for i, face in enumerate(faces):
        if len(face[0]) < 2:
            pass #raise "bad face"
        elif len(face[0])==2:
            if CREATE_EDGES:
                edges.append(face[0])
        else:

                blender_face = me.faces[i]

                face_vert_loc_indicies,\
                face_vert_tex_indicies,\
                context_material,\
                context_smooth_group,\
                context_object= face



                if context_smooth_group:
                    blender_face.use_smooth = True

                if context_material:
                    if context_material_old is not context_material:
                        mat= material_mapping[context_material]
                        context_material_old= context_material

                    blender_face.material_index= mat
# 					blender_face.mat= mat


                if verts_tex:

                    blender_tface= me.uv_textures[0].data[i]

                    if context_material:
                        image, has_data = unique_material_images[context_material]
                        if image: # Can be none if the material dosnt have an image.
                            blender_tface.image = image
                            blender_tface.use_image = True
                            if has_data and image.depth == 32:
                                blender_tface.blend_type = 'ALPHA'

                    # BUG - Evil eekadoodle problem where faces that have vert index 0 location at 3 or 4 are shuffled.
                    if len(face_vert_loc_indicies)==4:
                        if face_vert_loc_indicies[2]==0 or face_vert_loc_indicies[3]==0:
                            face_vert_tex_indicies= face_vert_tex_indicies[2], face_vert_tex_indicies[3], face_vert_tex_indicies[0], face_vert_tex_indicies[1]
                    else: # length of 3
                        if face_vert_loc_indicies[2]==0:
                            face_vert_tex_indicies= face_vert_tex_indicies[1], face_vert_tex_indicies[2], face_vert_tex_indicies[0]
                    # END EEEKADOODLE FIX

                    # assign material, uv's and image
                    blender_tface.uv1= verts_tex[face_vert_tex_indicies[0]]
                    blender_tface.uv2= verts_tex[face_vert_tex_indicies[1]]
                    blender_tface.uv3= verts_tex[face_vert_tex_indicies[2]]

                    if len(face_vert_loc_indicies)==4:
                        blender_tface.uv4= verts_tex[face_vert_tex_indicies[3]]

# 					for ii, uv in enumerate(blender_face.uv):
# 						uv.x, uv.y=  verts_tex[face_vert_tex_indicies[ii]]
    del me_faces
# 	del ALPHA

    if CREATE_EDGES:

        me.edges.add(len(edges))

        # edges should be a list of (a, b) tuples
        me.edges.foreach_set("vertices", unpack_list(edges))
# 		me_edges.extend( edges )

# 	del me_edges

    # Add edge faces.
# 	me_edges= me.edges

    def edges_match(e1, e2):
        return (e1[0] == e2[0] and e1[1] == e2[1]) or (e1[0] == e2[1] and e1[1] == e2[0])

    # XXX slow
# 	if CREATE_FGONS and fgon_edges:
# 		for fgon_edge in fgon_edges.keys():
# 			for ed in me.edges:
# 				if edges_match(fgon_edge, ed.vertices):
# 					ed.is_fgon = True

# 	if CREATE_FGONS and fgon_edges:
# 		FGON= Mesh.EdgeFlags.FGON
# 		for ed in me.findEdges( fgon_edges.keys() ):
# 			if ed!=None:
# 				me_edges[ed].flag |= FGON
# 		del FGON

    # XXX slow
# 	if unique_smooth_groups and sharp_edges:
# 		for sharp_edge in sharp_edges.keys():
# 			for ed in me.edges:
# 				if edges_match(sharp_edge, ed.vertices):
# 					ed.use_edge_sharp = True

# 	if unique_smooth_groups and sharp_edges:
# 		SHARP= Mesh.EdgeFlags.SHARP
# 		for ed in me.findEdges( sharp_edges.keys() ):
# 			if ed!=None:
# 				me_edges[ed].flag |= SHARP
# 		del SHARP

    me.update()
# 	me.calcNormals()

    ob= bpy.data.objects.new("Mesh", 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_indicies in vertex_groups.items():
        group= ob.vertex_groups.new(group_name)
        for vertex_index in group_indicies:
            ob.vertex_groups.assign(vertex_index, group, 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('deg', (3,))
    curv_range = context_nurbs.get('curv_range')
    curv_idx = context_nurbs.get('curv_idx', [])
    parm_u = context_nurbs.get('parm_u', [])
    parm_v = context_nurbs.get('parm_v', [])
    name = context_nurbs.get('name', 'ObjNurb')
    cstype = context_nurbs.get('cstype')

    if cstype == None:
        print('\tWarning, cstype not found')
        return
    if cstype != '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, '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("Nurb", cu)

    new_objects.append(ob)


def strip_slash(line_split):
    if line_split[-1][-1]== '\\':
        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
    - weather to replace commas or not
    '''
    file= open(filepath, 'rU')
    for line in file: #.xreadlines():
        line = line.lstrip()
        if line.startswith('v'): # vn vt v
            if ',' in line:
                return lambda f: float(f.replace(',', '.'))
            elif '.' in line:
                return float

    # incase all vert values were ints
    return float

def load_obj(filepath,
             context,
             CLAMP_SIZE= 0.0,
             CREATE_FGONS= True,
             CREATE_SMOOTH_GROUPS= True,
             CREATE_EDGES= True,
             SPLIT_OBJECTS= True,
             SPLIT_GROUPS= True,
             ROTATE_X90= True,
             IMAGE_SEARCH=True,
             POLYGROUPS=False):
    '''
    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
    '''
    print('\nimporting obj %r' % filepath)

    if SPLIT_OBJECTS or SPLIT_GROUPS:
        POLYGROUPS = False

    time_main= time.time()
# 	time_main= sys.time()

    verts_loc= []
    verts_tex= []
    faces= [] # tuples of the faces
    material_libs= [] # filanems to material libs this uses
    vertex_groups = {} # when POLYGROUPS 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= None
    context_vgroup = None

    # Nurbs
    context_nurbs = {}
    nurbs = []
    context_parm = '' # used by nurbs too but could be used elsewhere

    has_ngons= False
    # has_smoothgroups= False - is explicit with len(unique_smooth_groups) being > 0

    # Until we can use sets
    unique_materials= {}
    unique_material_images= {}
    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 weather
    context_multi_line= ''

    print("\tparsing obj file...")
    time_sub= time.time()
# 	time_sub= sys.time()

    file= open(filepath, 'rU')
    for line in file: #.xreadlines():
        line = line.lstrip() # rare cases there is white space at the start of the line

        if line.startswith('v '):
            line_split= line.split()
            # rotate X90: (x,-z,y)
            verts_loc.append( (float_func(line_split[1]), -float_func(line_split[3]), float_func(line_split[2])) )

        elif line.startswith('vn '):
            pass

        elif line.startswith('vt '):
            line_split= line.split()
            verts_tex.append( (float_func(line_split[1]), float_func(line_split[2])) )

        # Handel faces lines (as faces) and the second+ lines of fa multiline face here
        # use 'f' not 'f ' because some objs (very rare have 'fo ' for faces)
        elif line.startswith('f') or context_multi_line == 'f':

            if context_multi_line:
                # use face_vert_loc_indicies and face_vert_tex_indicies previously defined and used the obj_face
                line_split= line.split()

            else:
                line_split= line[2:].split()
                face_vert_loc_indicies= []
                face_vert_tex_indicies= []

                # Instance a face
                faces.append((\
                face_vert_loc_indicies,\
                face_vert_tex_indicies,\
                context_material,\
                context_smooth_group,\
                context_object\
                ))

            if strip_slash(line_split):
                context_multi_line = 'f'
            else:
                context_multi_line = ''

            for v in line_split:
                obj_vert= v.split('/')

                vert_loc_index= int(obj_vert[0])-1
                # Add the vertex to the current group
                # *warning*, this wont work for files that have groups defined around verts
                if	POLYGROUPS and context_vgroup:
                    vertex_groups[context_vgroup].append(vert_loc_index)

                # Make relative negative vert indicies absolute
                if vert_loc_index < 0:
                    vert_loc_index= len(verts_loc) + vert_loc_index + 1

                face_vert_loc_indicies.append(vert_loc_index)

                if len(obj_vert)>1 and obj_vert[1]:
                    # formatting for faces with normals and textures us
                    # loc_index/tex_index/nor_index

                    vert_tex_index= int(obj_vert[1])-1
                    # Make relative negative vert indicies absolute
                    if vert_tex_index < 0:
                        vert_tex_index= len(verts_tex) + vert_tex_index + 1

                    face_vert_tex_indicies.append(vert_tex_index)
                else:
                    # dummy
                    face_vert_tex_indicies.append(0)

            if len(face_vert_loc_indicies) > 4:
                has_ngons= True

        elif CREATE_EDGES and (line.startswith('l ') or context_multi_line == 'l'):
            # very similar to the face load function above with some parts removed

            if context_multi_line:
                # use face_vert_loc_indicies and face_vert_tex_indicies previously defined and used the obj_face
                line_split= line.split()

            else:
                line_split= line[2:].split()
                face_vert_loc_indicies= []
                face_vert_tex_indicies= []

                # Instance a face
                faces.append((\
                face_vert_loc_indicies,\
                face_vert_tex_indicies,\
                context_material,\
                context_smooth_group,\
                context_object\
                ))

            if strip_slash(line_split):
                context_multi_line = 'l'
            else:
                context_multi_line = ''

            isline= line.startswith('l')

            for v in line_split:
                vert_loc_index= int(v)-1

                # Make relative negative vert indicies absolute
                if vert_loc_index < 0:
                    vert_loc_index= len(verts_loc) + vert_loc_index + 1

                face_vert_loc_indicies.append(vert_loc_index)

        elif line.startswith('s'):
            if CREATE_SMOOTH_GROUPS:
                context_smooth_group= line_value(line.split())
                if context_smooth_group=='off':
                    context_smooth_group= None
                elif context_smooth_group: # is not None
                    unique_smooth_groups[context_smooth_group]= None

        elif line.startswith('o'):
            if SPLIT_OBJECTS:
                context_object= line_value(line.split())
                # unique_obects[context_object]= None

        elif line.startswith('g'):
            if SPLIT_GROUPS:
                context_object= line_value(line.split())
                # print 'context_object', context_object
                # unique_obects[context_object]= None
            elif POLYGROUPS:
                context_vgroup = line_value(line.split())
                if context_vgroup and context_vgroup != '(null)':
                    vertex_groups.setdefault(context_vgroup, [])
                else:
                    context_vgroup = None # dont assign a vgroup

        elif line.startswith('usemtl'):
            context_material= line_value(line.split())
            unique_materials[context_material]= None
        elif line.startswith('mtllib'): # usemap or usemat
            material_libs.extend( line.split()[1:] ) # can have multiple mtllib filenames per line


            # Nurbs support
        elif line.startswith('cstype '):
            context_nurbs['cstype']= line_value(line.split()) # 'rat bspline' / 'bspline'
        elif line.startswith('curv ') or context_multi_line == 'curv':
            line_split= line.split()

            curv_idx = context_nurbs['curv_idx'] = context_nurbs.get('curv_idx', []) # incase were multiline

            if not context_multi_line:
                context_nurbs['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 = 'curv'
            else:
                context_multi_line = ''


            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.startswith('parm') or context_multi_line == 'parm':
            line_split= line.split()

            if context_multi_line:
                context_multi_line = ''
            else:
                context_parm = line_split[1]
                line_split[0:2] = [] # remove first 2

            if strip_slash(line_split):
                context_multi_line = 'parm'
            else:
                context_multi_line = ''

            if context_parm.lower() == 'u':
                context_nurbs.setdefault('parm_u', []).extend( [float_func(f) for f in line_split] )
            elif context_parm.lower() == 'v': # surfaces not suported yet
                context_nurbs.setdefault('parm_v', []).extend( [float_func(f) for f in line_split] )
            # else: # may want to support other parm's ?

        elif line.startswith('deg '):
            context_nurbs['deg']= [int(i) for i in line.split()[1:]]
        elif line.startswith('end'):
            # Add the nurbs curve
            if context_object:
                context_nurbs['name'] = context_object
            nurbs.append(context_nurbs)
            context_nurbs = {}
            context_parm = ''

        ''' # How to use usemap? depricated?
        elif line.startswith('usema'): # usemap or usemat
            context_image= line_value(line.split())
        '''

    file.close()
    time_new= time.time()
# 	time_new= sys.time()
    print('%.4f sec' % (time_new-time_sub))
    time_sub= time_new


    print('\tloading materials and images...')
    create_materials(filepath, material_libs, unique_materials, unique_material_images, IMAGE_SEARCH)

    time_new= time.time()
# 	time_new= sys.time()
    print('%.4f sec' % (time_new-time_sub))
    time_sub= time_new

    if not ROTATE_X90:
        verts_loc[:] = [(v[0], v[2], -v[1]) for v in verts_loc]

    # deselect all
    bpy.ops.object.select_all(action='DESELECT')

    scene = context.scene
# 	scn.objects.selected = []
    new_objects= [] # put new objects here

    print('\tbuilding geometry...\n\tverts:%i faces:%i materials: %i smoothgroups:%i ...' % ( len(verts_loc), len(faces), len(unique_materials), len(unique_smooth_groups) ))
    # Split the mesh by objects/materials, may
    if SPLIT_OBJECTS or SPLIT_GROUPS:	SPLIT_OB_OR_GROUP = True
    else:								SPLIT_OB_OR_GROUP = False

    for verts_loc_split, faces_split, unique_materials_split, dataname in split_mesh(verts_loc, faces, unique_materials, filepath, SPLIT_OB_OR_GROUP):
        # Create meshes from the data, warning 'vertex_groups' wont support splitting
        create_mesh(new_objects, has_ngons, CREATE_FGONS, CREATE_EDGES, verts_loc_split, verts_tex, faces_split, unique_materials_split, unique_material_images, unique_smooth_groups, vertex_groups, dataname)

    # nurbs support
    for context_nurbs in nurbs:
        create_nurbs(context_nurbs, verts_loc, new_objects)

    # Create new obj
    for obj in new_objects:
        base = scene.objects.link(obj)
        base.select = True

    scene.update()


    axis_min= [ 1000000000]*3
    axis_max= [-1000000000]*3

# 	if CLAMP_SIZE:
# 		# Get all object bounds
# 		for ob in new_objects:
# 			for v in ob.getBoundBox():
# 				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 CLAMP_SIZE < max_axis * scale:
# 			scale= scale/10.0

# 		for ob in new_objects:
# 			ob.setSize(scale, scale, scale)

    # Better rotate the vert locations
    #if not ROTATE_X90:
    #	for ob in new_objects:
    #		ob.RotX = -1.570796326794896558

    time_new= time.time()
# 	time_new= sys.time()

    print('%.4f sec' % (time_new-time_sub))
    print('finished importing: %r in %.4f sec.' % (filepath, (time_new-time_main)))


DEBUG= True


def load_obj_ui(filepath, BATCH_LOAD= False):
    if BPyMessages.Error_NoFile(filepath):
        return

    global CREATE_SMOOTH_GROUPS, CREATE_FGONS, CREATE_EDGES, SPLIT_OBJECTS, SPLIT_GROUPS, CLAMP_SIZE, IMAGE_SEARCH, POLYGROUPS, KEEP_VERT_ORDER, ROTATE_X90

    CREATE_SMOOTH_GROUPS= Draw.Create(0)
    CREATE_FGONS= Draw.Create(1)
    CREATE_EDGES= Draw.Create(1)
    SPLIT_OBJECTS= Draw.Create(0)
    SPLIT_GROUPS= Draw.Create(0)
    CLAMP_SIZE= Draw.Create(10.0)
    IMAGE_SEARCH= Draw.Create(1)
    POLYGROUPS= Draw.Create(0)
    KEEP_VERT_ORDER= Draw.Create(1)
    ROTATE_X90= Draw.Create(1)


    # Get USER Options
    # Note, Works but not pretty, instead use a more complicated GUI
    '''
    pup_block= [\
    'Import...',\
    ('Smooth Groups', CREATE_SMOOTH_GROUPS, 'Surround smooth groups by sharp edges'),\
    ('Create FGons', CREATE_FGONS, 'Import faces with more then 4 verts as fgons.'),\
    ('Lines', CREATE_EDGES, 'Import lines and faces with 2 verts as edges'),\
    'Separate objects from obj...',\
    ('Object', SPLIT_OBJECTS, 'Import OBJ Objects into Blender Objects'),\
    ('Group', SPLIT_GROUPS, 'Import OBJ Groups into Blender Objects'),\
    'Options...',\
    ('Keep Vert Order', KEEP_VERT_ORDER, 'Keep vert and face order, disables some other options.'),\
    ('Clamp Scale:', CLAMP_SIZE, 0.0, 1000.0, 'Clamp the size to this maximum (Zero to Disable)'),\
    ('Image Search', IMAGE_SEARCH, 'Search subdirs for any assosiated images (Warning, may be slow)'),\
    ]

    if not Draw.PupBlock('Import OBJ...', pup_block):
        return

    if KEEP_VERT_ORDER.val:
        SPLIT_OBJECTS.val = False
        SPLIT_GROUPS.val = False
    '''



    # BEGIN ALTERNATIVE UI *******************
    if True:

        EVENT_NONE = 0
        EVENT_EXIT = 1
        EVENT_REDRAW = 2
        EVENT_IMPORT = 3

        GLOBALS = {}
        GLOBALS['EVENT'] = EVENT_REDRAW
        #GLOBALS['MOUSE'] = Window.GetMouseCoords()
        GLOBALS['MOUSE'] = [i/2 for i in Window.GetScreenSize()]

        def obj_ui_set_event(e,v):
            GLOBALS['EVENT'] = e

        def do_split(e,v):
            global SPLIT_OBJECTS, SPLIT_GROUPS, KEEP_VERT_ORDER, POLYGROUPS
            if SPLIT_OBJECTS.val or SPLIT_GROUPS.val:
                KEEP_VERT_ORDER.val = 0
                POLYGROUPS.val = 0
            else:
                KEEP_VERT_ORDER.val = 1

        def do_vertorder(e,v):
            global SPLIT_OBJECTS, SPLIT_GROUPS, KEEP_VERT_ORDER
            if KEEP_VERT_ORDER.val:
                SPLIT_OBJECTS.val = SPLIT_GROUPS.val = 0
            else:
                if not (SPLIT_OBJECTS.val or SPLIT_GROUPS.val):
                    KEEP_VERT_ORDER.val = 1

        def do_polygroups(e,v):
            global SPLIT_OBJECTS, SPLIT_GROUPS, KEEP_VERT_ORDER, POLYGROUPS
            if POLYGROUPS.val:
                SPLIT_OBJECTS.val = SPLIT_GROUPS.val = 0

        def do_help(e,v):
            url = __url__[0]
            print('Trying to open web browser with documentation at this address...')
            print('\t' + url)

            try:
                import webbrowser
                webbrowser.open(url)
            except:
                print('...could not open a browser window.')

        def obj_ui():
            ui_x, ui_y = GLOBALS['MOUSE']

            # Center based on overall pup size
            ui_x -= 165
            ui_y -= 90

            global CREATE_SMOOTH_GROUPS, CREATE_FGONS, CREATE_EDGES, SPLIT_OBJECTS, SPLIT_GROUPS, CLAMP_SIZE, IMAGE_SEARCH, POLYGROUPS, KEEP_VERT_ORDER, ROTATE_X90

            Draw.Label('Import...', ui_x+9, ui_y+159, 220, 21)
            Draw.BeginAlign()
            CREATE_SMOOTH_GROUPS = Draw.Toggle('Smooth Groups', EVENT_NONE, ui_x+9, ui_y+139, 110, 20, CREATE_SMOOTH_GROUPS.val, 'Surround smooth groups by sharp edges')
            CREATE_FGONS = Draw.Toggle('NGons as FGons', EVENT_NONE, ui_x+119, ui_y+139, 110, 20, CREATE_FGONS.val, 'Import faces with more then 4 verts as fgons')
            CREATE_EDGES = Draw.Toggle('Lines as Edges', EVENT_NONE, ui_x+229, ui_y+139, 110, 20, CREATE_EDGES.val, 'Import lines and faces with 2 verts as edges')
            Draw.EndAlign()

            Draw.Label('Separate objects by OBJ...', ui_x+9, ui_y+110, 220, 20)
            Draw.BeginAlign()
            SPLIT_OBJECTS = Draw.Toggle('Object', EVENT_REDRAW, ui_x+9, ui_y+89, 55, 21, SPLIT_OBJECTS.val, 'Import OBJ Objects into Blender Objects', do_split)
            SPLIT_GROUPS = Draw.Toggle('Group', EVENT_REDRAW, ui_x+64, ui_y+89, 55, 21, SPLIT_GROUPS.val, 'Import OBJ Groups into Blender Objects', do_split)
            Draw.EndAlign()

            # Only used for user feedback
            KEEP_VERT_ORDER = Draw.Toggle('Keep Vert Order', EVENT_REDRAW, ui_x+184, ui_y+89, 113, 21, KEEP_VERT_ORDER.val, 'Keep vert and face order, disables split options, enable for morph targets', do_vertorder)

            ROTATE_X90 = Draw.Toggle('-X90', EVENT_REDRAW, ui_x+302, ui_y+89, 38, 21, ROTATE_X90.val, 'Rotate X 90.')

            Draw.Label('Options...', ui_x+9, ui_y+60, 211, 20)
            CLAMP_SIZE = Draw.Number('Clamp Scale: ', EVENT_NONE, ui_x+9, ui_y+39, 130, 21, CLAMP_SIZE.val, 0.0, 1000.0, 'Clamp the size to this maximum (Zero to Disable)')
            POLYGROUPS = Draw.Toggle('Poly Groups', EVENT_REDRAW, ui_x+144, ui_y+39, 90, 21, POLYGROUPS.val, 'Import OBJ groups as vertex groups.', do_polygroups)
            IMAGE_SEARCH = Draw.Toggle('Image Search', EVENT_NONE, ui_x+239, ui_y+39, 100, 21, IMAGE_SEARCH.val, 'Search subdirs for any assosiated images (Warning, may be slow)')
            Draw.BeginAlign()
            Draw.PushButton('Online Help', EVENT_REDRAW, ui_x+9, ui_y+9, 110, 21, 'Load the wiki page for this script', do_help)
            Draw.PushButton('Cancel', EVENT_EXIT, ui_x+119, ui_y+9, 110, 21, '', obj_ui_set_event)
            Draw.PushButton('Import', EVENT_IMPORT, ui_x+229, ui_y+9, 110, 21, 'Import with these settings', obj_ui_set_event)
            Draw.EndAlign()


        # hack so the toggle buttons redraw. this is not nice at all
        while GLOBALS['EVENT'] not in (EVENT_EXIT, EVENT_IMPORT):
            Draw.UIBlock(obj_ui, 0)

        if GLOBALS['EVENT'] != EVENT_IMPORT:
            return

    # END ALTERNATIVE UI *********************







    Window.WaitCursor(1)

    if BATCH_LOAD: # load the dir
        try:
            files= [ f for f in os.listdir(filepath) if f.lower().endswith('.obj') ]
        except:
            Window.WaitCursor(0)
            Draw.PupMenu('Error%t|Could not open path ' + filepath)
            return

        if not files:
            Window.WaitCursor(0)
            Draw.PupMenu('Error%t|No files at path ' + filepath)
            return

        for f in files:
            scn= bpy.data.scenes.new(os.path.splitext(f)[0])
            scn.makeCurrent()

            load_obj(sys.join(filepath, f),\
              CLAMP_SIZE.val,\
              CREATE_FGONS.val,\
              CREATE_SMOOTH_GROUPS.val,\
              CREATE_EDGES.val,\
              SPLIT_OBJECTS.val,\
              SPLIT_GROUPS.val,\
              ROTATE_X90.val,\
              IMAGE_SEARCH.val,\
              POLYGROUPS.val
            )

    else: # Normal load
        load_obj(filepath,\
          CLAMP_SIZE.val,\
          CREATE_FGONS.val,\
          CREATE_SMOOTH_GROUPS.val,\
          CREATE_EDGES.val,\
          SPLIT_OBJECTS.val,\
          SPLIT_GROUPS.val,\
          ROTATE_X90.val,\
          IMAGE_SEARCH.val,\
          POLYGROUPS.val
        )

    Window.WaitCursor(0)


def load_obj_ui_batch(file):
    load_obj_ui(file, True)

DEBUG= False

# if __name__=='__main__' and not DEBUG:
# 	if os and Window.GetKeyQualifiers() & Window.Qual.SHIFT:
# 		Window.FileSelector(load_obj_ui_batch, 'Import OBJ Dir', '')
# 	else:
# 		Window.FileSelector(load_obj_ui, 'Import a Wavefront OBJ', '*.obj')

    # For testing compatibility
'''
else:
    # DEBUG ONLY
    TIME= sys.time()
    DIR = '/fe/obj'
    import os
    print 'Searching for files'
    def fileList(path):
        for dirpath, dirnames, filenames in os.walk(path):
            for filename in filenames:
                yield os.path.join(dirpath, filename)

    files = [f for f in fileList(DIR) if f.lower().endswith('.obj')]
    files.sort()

    for i, obj_file in enumerate(files):
        if 0 < i < 20:
            print 'Importing', obj_file, '\nNUMBER', i, 'of', len(files)
            newScn= bpy.data.scenes.new(os.path.basename(obj_file))
            newScn.makeCurrent()
            load_obj(obj_file, False, IMAGE_SEARCH=0)

    print 'TOTAL TIME: %.6f' % (sys.time() - TIME)
'''

from bpy.props import *

class IMPORT_OT_obj(bpy.types.Operator):
    '''Load a Wavefront OBJ File'''
    bl_idname = "import_scene.obj"
    bl_label = "Import OBJ"

    # List of operator properties, the attributes will be assigned
    # to the class instance from the operator settings before calling.


    filepath = StringProperty(name="File Path", description="Filepath used for importing the OBJ file", maxlen= 1024, default= "", subtype='FILE_PATH')

    CREATE_SMOOTH_GROUPS = BoolProperty(name="Smooth Groups", description="Surround smooth groups by sharp edges", default= True)
    CREATE_FGONS = BoolProperty(name="NGons as FGons", description="Import faces with more then 4 verts as fgons", default= True)
    CREATE_EDGES = BoolProperty(name="Lines as Edges", description="Import lines and faces with 2 verts as edge", default= True)
    SPLIT_OBJECTS = BoolProperty(name="Object", description="Import OBJ Objects into Blender Objects", default= True)
    SPLIT_GROUPS = BoolProperty(name="Group", description="Import OBJ Groups into Blender Objects", default= True)
    # old comment: only used for user feedback
    # disabled this option because in old code a handler for it disabled SPLIT* params, it's not passed to load_obj
    # KEEP_VERT_ORDER = BoolProperty(name="Keep Vert Order", description="Keep vert and face order, disables split options, enable for morph targets", default= True)
    ROTATE_X90 = BoolProperty(name="-X90", description="Rotate X 90.", default= True)
    CLAMP_SIZE = FloatProperty(name="Clamp Scale", description="Clamp the size to this maximum (Zero to Disable)", min=0.0, max=1000.0, soft_min=0.0, soft_max=1000.0, default=0.0)
    POLYGROUPS = BoolProperty(name="Poly Groups", description="Import OBJ groups as vertex groups.", default= True)
    IMAGE_SEARCH = BoolProperty(name="Image Search", description="Search subdirs for any assosiated images (Warning, may be slow)", default= True)


    def execute(self, context):
        # print("Selected: " + context.active_object.name)

        load_obj(self.properties.filepath,
                 context,
                 self.properties.CLAMP_SIZE,
                 self.properties.CREATE_FGONS,
                 self.properties.CREATE_SMOOTH_GROUPS,
                 self.properties.CREATE_EDGES,
                 self.properties.SPLIT_OBJECTS,
                 self.properties.SPLIT_GROUPS,
                 self.properties.ROTATE_X90,
                 self.properties.IMAGE_SEARCH,
                 self.properties.POLYGROUPS)

        return {'FINISHED'}

    def invoke(self, context, event):
        context.manager.add_fileselect(self)
        return {'RUNNING_MODAL'}


def menu_func(self, context):
    self.layout.operator(IMPORT_OT_obj.bl_idname, text="Wavefront (.obj)")


def register():
    bpy.types.INFO_MT_file_import.append(menu_func)

def unregister():
    bpy.types.INFO_MT_file_import.remove(menu_func)


# NOTES (all line numbers refer to 2.4x import_obj.py, not this file)
# check later: line 489
# can convert now: edge flags, edges: lines 508-528
# ngon (uses python module BPyMesh): 384-414
# NEXT clamp size: get bound box with RNA
# get back to l 140 (here)
# search image in bpy.config.textureDir - load_image
# replaced BPyImage.comprehensiveImageLoad with a simplified version that only checks additional directory specified, but doesn't search dirs recursively (obj_image_load)
# bitmask won't work? - 132
# uses bpy.sys.time()

if __name__ == "__main__":
    register()