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Diffstat (limited to 'release/scripts/io/export_obj.py')
| -rw-r--r-- | release/scripts/io/export_obj.py | 996 |
1 files changed, 996 insertions, 0 deletions
diff --git a/release/scripts/io/export_obj.py b/release/scripts/io/export_obj.py new file mode 100644 index 00000000000..83b400816e3 --- /dev/null +++ b/release/scripts/io/export_obj.py @@ -0,0 +1,996 @@ +#!BPY + +""" +Name: 'Wavefront (.obj)...' +Blender: 248 +Group: 'Export' +Tooltip: 'Save a Wavefront OBJ File' +""" + +__author__ = "Campbell Barton, Jiri Hnidek, Paolo Ciccone" +__url__ = ['http://wiki.blender.org/index.php/Scripts/Manual/Export/wavefront_obj', 'www.blender.org', 'blenderartists.org'] +__version__ = "1.21" + +__bpydoc__ = """\ +This script is an exporter to OBJ file format. + +Usage: + +Select the objects you wish to export and run this script from "File->Export" menu. +Selecting the default options from the popup box will be good in most cases. +All objects that can be represented as a mesh (mesh, curve, metaball, surface, text3d) +will be exported as mesh data. +""" + + +# -------------------------------------------------------------------------- +# OBJ Export v1.1 by Campbell Barton (AKA Ideasman) +# -------------------------------------------------------------------------- +# ***** 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. +# +# ***** END GPL LICENCE BLOCK ***** +# -------------------------------------------------------------------------- + +# import math and other in functions that use them for the sake of fast Blender startup +# import math +import os +import time + +import bpy +import Mathutils + + +# Returns a tuple - path,extension. +# 'hello.obj' > ('hello', '.obj') +def splitExt(path): + dotidx = path.rfind('.') + if dotidx == -1: + return path, '' + else: + return path[:dotidx], path[dotidx:] + +def fixName(name): + if name == None: + return 'None' + else: + return name.replace(' ', '_') + + +# this used to be in BPySys module +# frankly, I don't understand how it works +def BPySys_cleanName(name): + + v = [0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,46,47,58,59,60,61,62,63,64,91,92,93,94,96,123,124,125,126,127,128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159,160,161,162,163,164,165,166,167,168,169,170,171,172,173,174,175,176,177,178,179,180,181,182,183,184,185,186,187,188,189,190,191,192,193,194,195,196,197,198,199,200,201,202,203,204,205,206,207,208,209,210,211,212,213,214,215,216,217,218,219,220,221,222,223,224,225,226,227,228,229,230,231,232,233,234,235,236,237,238,239,240,241,242,243,244,245,246,247,248,249,250,251,252,253,254] + + invalid = ''.join([chr(i) for i in v]) + + for ch in invalid: + name = name.replace(ch, '_') + return name + +# A Dict of Materials +# (material.name, image.name):matname_imagename # matname_imagename has gaps removed. +MTL_DICT = {} + +def write_mtl(scene, filename, copy_images): + + world = scene.world + worldAmb = world.ambient_color + + dest_dir = os.path.dirname(filename) + + def copy_image(image): + rel = image.get_export_path(dest_dir, True) + + if copy_images: + abspath = image.get_export_path(dest_dir, False) + if not os.path.exists(abs_path): + shutil.copy(image.get_abs_filename(), abs_path) + + return rel + + + file = open(filename, "w") + # XXX +# file.write('# Blender3D MTL File: %s\n' % Blender.Get('filename').split('\\')[-1].split('/')[-1]) + file.write('# Material Count: %i\n' % len(MTL_DICT)) + # Write material/image combinations we have used. + for key, (mtl_mat_name, mat, img) in MTL_DICT.items(): + + # Get the Blender data for the material and the image. + # Having an image named None will make a bug, dont do it :) + + file.write('newmtl %s\n' % mtl_mat_name) # Define a new material: matname_imgname + + if mat: + file.write('Ns %.6f\n' % ((mat.specular_hardness-1) * 1.9607843137254901) ) # Hardness, convert blenders 1-511 to MTL's + file.write('Ka %.6f %.6f %.6f\n' % tuple([c*mat.ambient for c in worldAmb]) ) # Ambient, uses mirror colour, + file.write('Kd %.6f %.6f %.6f\n' % tuple([c*mat.diffuse_intensity for c in mat.diffuse_color]) ) # Diffuse + file.write('Ks %.6f %.6f %.6f\n' % tuple([c*mat.specular_intensity for c in mat.specular_color]) ) # Specular + if hasattr(mat, "ior"): + file.write('Ni %.6f\n' % mat.ior) # Refraction index + else: + file.write('Ni %.6f\n' % 1.0) + file.write('d %.6f\n' % mat.alpha) # Alpha (obj uses 'd' for dissolve) + + # 0 to disable lighting, 1 for ambient & diffuse only (specular color set to black), 2 for full lighting. + if mat.shadeless: + file.write('illum 0\n') # ignore lighting + elif mat.specular_intensity == 0: + file.write('illum 1\n') # no specular. + else: + file.write('illum 2\n') # light normaly + + else: + #write a dummy material here? + file.write('Ns 0\n') + file.write('Ka %.6f %.6f %.6f\n' % tuple([c for c in worldAmb]) ) # Ambient, uses mirror colour, + file.write('Kd 0.8 0.8 0.8\n') + file.write('Ks 0.8 0.8 0.8\n') + file.write('d 1\n') # No alpha + file.write('illum 2\n') # light normaly + + # Write images! + if img: # We have an image on the face! + # write relative image path + rel = copy_image(img) + file.write('map_Kd %s\n' % rel) # Diffuse mapping image +# file.write('map_Kd %s\n' % img.filename.split('\\')[-1].split('/')[-1]) # Diffuse mapping image + + elif mat: # No face image. if we havea material search for MTex image. + for mtex in mat.textures: + if mtex and mtex.texture.type == 'IMAGE': + try: + filename = copy_image(mtex.texture.image) +# filename = mtex.texture.image.filename.split('\\')[-1].split('/')[-1] + file.write('map_Kd %s\n' % filename) # Diffuse mapping image + break + except: + # Texture has no image though its an image type, best ignore. + pass + + file.write('\n\n') + + file.close() + +# XXX not used +def copy_file(source, dest): + file = open(source, 'rb') + data = file.read() + file.close() + + file = open(dest, 'wb') + file.write(data) + file.close() + + +# XXX not used +def copy_images(dest_dir): + if dest_dir[-1] != os.sep: + dest_dir += os.sep +# if dest_dir[-1] != sys.sep: +# dest_dir += sys.sep + + # Get unique image names + uniqueImages = {} + for matname, mat, image in MTL_DICT.values(): # Only use image name + # Get Texface images + if image: + uniqueImages[image] = image # Should use sets here. wait until Python 2.4 is default. + + # Get MTex images + if mat: + for mtex in mat.textures: + if mtex and mtex.texture.type == 'IMAGE': + image_tex = mtex.texture.image + if image_tex: + try: + uniqueImages[image_tex] = image_tex + except: + pass + + # Now copy images + copyCount = 0 + +# for bImage in uniqueImages.values(): +# image_path = bpy.sys.expandpath(bImage.filename) +# if bpy.sys.exists(image_path): +# # Make a name for the target path. +# dest_image_path = dest_dir + image_path.split('\\')[-1].split('/')[-1] +# if not bpy.sys.exists(dest_image_path): # Image isnt alredy there +# print('\tCopying "%s" > "%s"' % (image_path, dest_image_path)) +# copy_file(image_path, dest_image_path) +# copyCount+=1 + +# paths= bpy.util.copy_images(uniqueImages.values(), dest_dir) + + print('\tCopied %d images' % copyCount) +# print('\tCopied %d images' % copyCount) + +# XXX not converted +def test_nurbs_compat(ob): + if ob.type != 'Curve': + return False + + for nu in ob.data: + if (not nu.knotsV) and nu.type != 1: # not a surface and not bezier + return True + + return False + + +# XXX not converted +def write_nurb(file, ob, ob_mat): + tot_verts = 0 + cu = ob.data + + # use negative indices + Vector = Blender.Mathutils.Vector + for nu in cu: + + if nu.type==0: DEG_ORDER_U = 1 + else: DEG_ORDER_U = nu.orderU-1 # Tested to be correct + + if nu.type==1: + print("\tWarning, bezier curve:", ob.name, "only poly and nurbs curves supported") + continue + + if nu.knotsV: + print("\tWarning, surface:", ob.name, "only poly and nurbs curves supported") + continue + + if len(nu) <= DEG_ORDER_U: + print("\tWarning, orderU is lower then vert count, skipping:", ob.name) + continue + + pt_num = 0 + do_closed = (nu.flagU & 1) + do_endpoints = (do_closed==0) and (nu.flagU & 2) + + for pt in nu: + pt = Vector(pt[0], pt[1], pt[2]) * ob_mat + file.write('v %.6f %.6f %.6f\n' % (pt[0], pt[1], pt[2])) + pt_num += 1 + tot_verts += pt_num + + file.write('g %s\n' % (fixName(ob.name))) # fixName(ob.getData(1)) could use the data name too + file.write('cstype bspline\n') # not ideal, hard coded + file.write('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] + + file.write('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 + + file.write('parm u %s\n' % ' '.join( [str(i) for i in parm_ls] )) + + file.write('end\n') + + return tot_verts + +def write(filename, objects, scene, + EXPORT_TRI=False, + EXPORT_EDGES=False, + EXPORT_NORMALS=False, + EXPORT_NORMALS_HQ=False, + EXPORT_UV=True, + EXPORT_MTL=True, + EXPORT_COPY_IMAGES=False, + EXPORT_APPLY_MODIFIERS=True, + EXPORT_ROTX90=True, + 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): + ''' + Basic write function. The context and options must be alredy set + This can be accessed externaly + eg. + write( 'c:\\test\\foobar.obj', Blender.Object.GetSelected() ) # Using default options. + ''' + + # XXX + import math + + def veckey3d(v): + return round(v.x, 6), round(v.y, 6), round(v.z, 6) + + def veckey2d(v): + return round(v[0], 6), round(v[1], 6) + # return round(v.x, 6), round(v.y, 6) + + 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 vetex 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.verts: +# for vert in face: + vWeights = vWeightMap[vert_index] +# vWeights = vWeightMap[vert] + for vGroupName, weight in vWeights: + weightDict[vGroupName] = weightDict.get(vGroupName, 0) + weight + + if weightDict: + alist = [(weight,vGroupName) for vGroupName, weight in weightDict.items()] # sort least to greatest amount of weight + alist.sort() + return(alist[-1][1]) # highest value last + else: + return '(null)' + + # TODO: implement this in C? dunno how it should be called... + def getVertsFromGroup(me, group_index): + ret = [] + + for i, v in enumerate(me.verts): + for g in v.groups: + if g.group == group_index: + ret.append((i, g.weight)) + + return ret + + + print('OBJ Export path: "%s"' % filename) + temp_mesh_name = '~tmp-mesh' + + time1 = time.clock() +# time1 = sys.time() +# scn = Scene.GetCurrent() + + file = open(filename, "w") + + # Write Header + version = "2.5" + file.write('# Blender3D v%s OBJ File: %s\n' % (version, bpy.data.filename.split('/')[-1].split('\\')[-1] )) + file.write('# www.blender3d.org\n') + + # Tell the obj file what material file to use. + if EXPORT_MTL: + mtlfilename = '%s.mtl' % '.'.join(filename.split('.')[:-1]) + file.write('mtllib %s\n' % ( mtlfilename.split('\\')[-1].split('/')[-1] )) + + if EXPORT_ROTX90: + mat_xrot90= Mathutils.RotationMatrix(-math.pi/2, 4, 'x') + + # Initialize totals, these are updated each object + totverts = totuvco = totno = 1 + + face_vert_index = 1 + + globalNormals = {} + + # Get all meshes + for ob_main in objects: + + # ignore dupli children + if ob_main.parent and ob_main.parent.dupli_type != 'NONE': + # XXX + print(ob_main.name, 'is a dupli child - ignoring') + continue + + obs = [] + if ob_main.dupli_type != 'NONE': + # XXX + print('creating dupli_list on', ob_main.name) + ob_main.create_dupli_list() + + obs = [(dob.object, dob.matrix) for dob in ob_main.dupli_list] + + # XXX debug print + print(ob_main.name, 'has', len(obs), 'dupli children') + else: + obs = [(ob_main, ob_main.matrix)] + + for ob, ob_mat in obs: + + # XXX postponed +# # Nurbs curve support +# if EXPORT_CURVE_AS_NURBS and test_nurbs_compat(ob): +# if EXPORT_ROTX90: +# ob_mat = ob_mat * mat_xrot90 + +# totverts += write_nurb(file, ob, ob_mat) + +# continue +# end nurbs + + if ob.type != 'MESH': + continue + + me = ob.create_mesh(EXPORT_APPLY_MODIFIERS, 'PREVIEW') + + if EXPORT_ROTX90: + me.transform(ob_mat * mat_xrot90) + else: + me.transform(ob_mat) + +# # Will work for non meshes now! :) +# me= BPyMesh.getMeshFromObject(ob, containerMesh, EXPORT_APPLY_MODIFIERS, EXPORT_POLYGROUPS, scn) +# if not me: +# continue + + if EXPORT_UV: + faceuv = len(me.uv_textures) > 0 + else: + faceuv = False + + # XXX - todo, find a better way to do triangulation + # ...removed convert_to_triface because it relies on editmesh + ''' + # We have a valid mesh + if EXPORT_TRI and me.faces: + # Add a dummy object to it. + has_quads = False + for f in me.faces: + if f.verts[3] != 0: + has_quads = True + break + + if has_quads: + newob = bpy.data.add_object('MESH', 'temp_object') + newob.data = me + # if we forget to set Object.data - crash + scene.add_object(newob) + newob.convert_to_triface(scene) + # mesh will still be there + scene.remove_object(newob) + ''' + + # Make our own list so it can be sorted to reduce context switching + face_index_pairs = [ (face, index) for index, face in enumerate(me.faces)] + # faces = [ f for f in me.faces ] + + if EXPORT_EDGES: + edges = me.edges + else: + edges = [] + + if not (len(face_index_pairs)+len(edges)+len(me.verts)): # Make sure there is somthing to write + + # clean up + bpy.data.remove_mesh(me) + + continue # dont bother with this mesh. + + # XXX + # High Quality Normals + if EXPORT_NORMALS and face_index_pairs: + me.calc_normals() +# if EXPORT_NORMALS_HQ: +# BPyMesh.meshCalcNormals(me) +# else: +# # transforming normals is incorrect +# # when the matrix is scaled, +# # better to recalculate them +# me.calcNormals() + + materials = me.materials + + materialNames = [] + materialItems = [m for m in materials] + if materials: + for mat in materials: + if mat: # !=None + materialNames.append(mat.name) + else: + materialNames.append(None) + # Cant use LC because some materials are None. + # materialNames = map(lambda mat: mat.name, materials) # Bug Blender, dosent account for null materials, still broken. + + # Possible there null materials, will mess up indicies + # but at least it will export, wait until Blender gets fixed. + materialNames.extend((16-len(materialNames)) * [None]) + materialItems.extend((16-len(materialItems)) * [None]) + + # Sort by Material, then images + # so we dont over context switch in the obj file. + if EXPORT_KEEP_VERT_ORDER: + pass + elif faceuv: + # XXX update + tface = me.active_uv_texture.data + + # exception only raised if Python 2.3 or lower... + try: + face_index_pairs.sort(key = lambda a: (a[0].material_index, tface[a[1]].image, a[0].smooth)) + except: + face_index_pairs.sort(lambda a,b: cmp((a[0].material_index, tface[a[1]].image, a[0].smooth), + (b[0].material_index, tface[b[1]].image, b[0].smooth))) + elif len(materials) > 1: + try: + face_index_pairs.sort(key = lambda a: (a[0].material_index, a[0].smooth)) + except: + face_index_pairs.sort(lambda a,b: cmp((a[0].material_index, a[0].smooth), + (b[0].material_index, b[0].smooth))) + else: + # no materials + try: + face_index_pairs.sort(key = lambda a: a[0].smooth) + except: + face_index_pairs.sort(lambda a,b: cmp(a[0].smooth, b[0].smooth)) +# if EXPORT_KEEP_VERT_ORDER: +# pass +# elif faceuv: +# try: faces.sort(key = lambda a: (a.mat, a.image, a.smooth)) +# except: faces.sort(lambda a,b: cmp((a.mat, a.image, a.smooth), (b.mat, b.image, b.smooth))) +# elif len(materials) > 1: +# try: faces.sort(key = lambda a: (a.mat, a.smooth)) +# except: faces.sort(lambda a,b: cmp((a.mat, a.smooth), (b.mat, b.smooth))) +# else: +# # no materials +# try: faces.sort(key = lambda a: a.smooth) +# except: faces.sort(lambda a,b: cmp(a.smooth, b.smooth)) + + faces = [pair[0] for pair in face_index_pairs] + + # Set the default mat to no material and no image. + contextMat = (0, 0) # Can never be this, so we will label a new material teh 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 = fixName(name1) + else: + obnamestring = '%s_%s' % (fixName(name1), fixName(name2)) + + if EXPORT_BLEN_OBS: + file.write('o %s\n' % obnamestring) # Write Object name + else: # if EXPORT_GROUP_BY_OB: + file.write('g %s\n' % obnamestring) + + + # Vert + for v in me.verts: + file.write('v %.6f %.6f %.6f\n' % tuple(v.co)) + + # UV + if faceuv: + uv_face_mapping = [[0,0,0,0] for f in faces] # a bit of a waste for tri's :/ + + uv_dict = {} # could use a set() here + uv_layer = me.active_uv_texture + for f, f_index in face_index_pairs: + + tface = uv_layer.data[f_index] + + uvs = tface.uv + # uvs = [tface.uv1, tface.uv2, tface.uv3] + + # # add another UV if it's a quad + # if len(f.verts) == 4: + # uvs.append(tface.uv4) + + for uv_index, uv in enumerate(uvs): + uvkey = veckey2d(uv) + try: + uv_face_mapping[f_index][uv_index] = uv_dict[uvkey] + except: + uv_face_mapping[f_index][uv_index] = uv_dict[uvkey] = len(uv_dict) + file.write('vt %.6f %.6f\n' % tuple(uv)) + +# uv_dict = {} # could use a set() here +# for f_index, f in enumerate(faces): + +# for uv_index, uv in enumerate(f.uv): +# uvkey = veckey2d(uv) +# try: +# uv_face_mapping[f_index][uv_index] = uv_dict[uvkey] +# except: +# uv_face_mapping[f_index][uv_index] = uv_dict[uvkey] = len(uv_dict) +# file.write('vt %.6f %.6f\n' % tuple(uv)) + + uv_unique_count = len(uv_dict) +# del uv, uvkey, uv_dict, f_index, uv_index + # Only need uv_unique_count and uv_face_mapping + + # NORMAL, Smooth/Non smoothed. + if EXPORT_NORMALS: + for f in faces: + if f.smooth: + for v in f: + noKey = veckey3d(v.normal) + if noKey not in globalNormals: + globalNormals[noKey] = totno + totno +=1 + file.write('vn %.6f %.6f %.6f\n' % noKey) + else: + # Hard, 1 normal from the face. + noKey = veckey3d(f.normal) + if noKey not in globalNormals: + globalNormals[noKey] = totno + totno +=1 + file.write('vn %.6f %.6f %.6f\n' % noKey) + + if not faceuv: + f_image = None + + # XXX + if EXPORT_POLYGROUPS: + # Retrieve the list of vertex groups +# vertGroupNames = me.getVertGroupNames() + + 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))] +# vgroupsMap = [[] for _i in xrange(len(me.verts))] + for g in ob.vertex_groups: +# for vertexGroupName in vertGroupNames: + for vIdx, vWeight in getVertsFromGroup(me, g.index): +# for vIdx, vWeight in me.getVertsFromGroup(vertexGroupName, 1): + vgroupsMap[vIdx].append((g.name, vWeight)) + + for f_index, f in enumerate(faces): + f_v = [{"index": index, "vertex": me.verts[index]} for index in f.verts] + + # if f.verts[3] == 0: + # f_v.pop() + +# f_v= f.v + f_smooth= f.smooth + f_mat = min(f.material_index, len(materialNames)-1) +# f_mat = min(f.mat, len(materialNames)-1) + if faceuv: + + tface = me.active_uv_texture.data[face_index_pairs[f_index][1]] + + f_image = tface.image + f_uv = tface.uv + # f_uv= [tface.uv1, tface.uv2, tface.uv3] + # if len(f.verts) == 4: + # f_uv.append(tface.uv4) +# f_image = f.image +# f_uv= f.uv + + # MAKE KEY + if faceuv and f_image: # Object is always true. + key = materialNames[f_mat], f_image.name + else: + key = materialNames[f_mat], None # No image, use None instead. + + # Write the vertex group + if EXPORT_POLYGROUPS: + if len(ob.vertex_groups): + # find what vertext group the face belongs to + theVGroup = findVertexGroupName(f,vgroupsMap) + if theVGroup != currentVGroup: + currentVGroup = theVGroup + file.write('g %s\n' % theVGroup) +# # Write the vertex group +# if EXPORT_POLYGROUPS: +# if vertGroupNames: +# # find what vertext group the face belongs to +# theVGroup = findVertexGroupName(f,vgroupsMap) +# if theVGroup != currentVGroup: +# currentVGroup = theVGroup +# file.write('g %s\n' % theVGroup) + + # CHECK FOR CONTEXT SWITCH + if key == contextMat: + pass # Context alredy switched, dont do anything + else: + if key[0] == None and key[1] == None: + # Write a null material, since we know the context has changed. + if EXPORT_GROUP_BY_MAT: + # can be mat_image or (null) + file.write('g %s_%s\n' % (fixName(ob.name), fixName(ob.data.name)) ) # can be mat_image or (null) + file.write('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 fixName. + + # If none image dont bother adding it to the name + if key[1] == None: + mat_data = MTL_DICT[key] = ('%s'%fixName(key[0])), materialItems[f_mat], f_image + else: + mat_data = MTL_DICT[key] = ('%s_%s' % (fixName(key[0]), fixName(key[1]))), materialItems[f_mat], f_image + + if EXPORT_GROUP_BY_MAT: + file.write('g %s_%s_%s\n' % (fixName(ob.name), fixName(ob.data.name), mat_data[0]) ) # can be mat_image or (null) + + file.write('usemtl %s\n' % mat_data[0]) # can be mat_image or (null) + + contextMat = key + if f_smooth != contextSmooth: + if f_smooth: # on now off + file.write('s 1\n') + contextSmooth = f_smooth + else: # was off now on + file.write('s off\n') + contextSmooth = f_smooth + + file.write('f') + if faceuv: + if EXPORT_NORMALS: + if f_smooth: # Smoothed, use vertex normals + for vi, v in enumerate(f_v): + file.write( ' %d/%d/%d' % \ + (v["index"] + totverts, + totuvco + uv_face_mapping[f_index][vi], + globalNormals[ veckey3d(v["vertex"].normal) ]) ) # vert, uv, normal + + else: # No smoothing, face normals + no = globalNormals[ veckey3d(f.normal) ] + for vi, v in enumerate(f_v): + file.write( ' %d/%d/%d' % \ + (v["index"] + totverts, + totuvco + uv_face_mapping[f_index][vi], + no) ) # vert, uv, normal + else: # No Normals + for vi, v in enumerate(f_v): + file.write( ' %d/%d' % (\ + v["index"] + totverts,\ + totuvco + uv_face_mapping[f_index][vi])) # vert, uv + + face_vert_index += len(f_v) + + else: # No UV's + if EXPORT_NORMALS: + if f_smooth: # Smoothed, use vertex normals + for v in f_v: + file.write( ' %d//%d' % + (v["index"] + totverts, globalNormals[ veckey3d(v["vertex"].normal) ]) ) + else: # No smoothing, face normals + no = globalNormals[ veckey3d(f.normal) ] + for v in f_v: + file.write( ' %d//%d' % (v["index"] + totverts, no) ) + else: # No Normals + for v in f_v: + file.write( ' %d' % (v["index"] + totverts) ) + + file.write('\n') + + # Write edges. + if EXPORT_EDGES: + for ed in edges: + if ed.loose: + file.write('f %d %d\n' % (ed.verts[0] + totverts, ed.verts[1] + totverts)) + + # Make the indicies global rather then per mesh + totverts += len(me.verts) + if faceuv: + totuvco += uv_unique_count + + # clean up + bpy.data.remove_mesh(me) + + if ob_main.dupli_type != 'NONE': + ob_main.free_dupli_list() + + file.close() + + + # Now we have all our materials, save them + if EXPORT_MTL: + write_mtl(scene, mtlfilename, EXPORT_COPY_IMAGES) +# if EXPORT_COPY_IMAGES: +# dest_dir = os.path.basename(filename) +# # dest_dir = filename +# # # Remove chars until we are just the path. +# # while dest_dir and dest_dir[-1] not in '\\/': +# # dest_dir = dest_dir[:-1] +# if dest_dir: +# copy_images(dest_dir) +# else: +# print('\tError: "%s" could not be used as a base for an image path.' % filename) + + print("OBJ Export time: %.2f" % (time.clock() - time1)) +# print "OBJ Export time: %.2f" % (sys.time() - time1) + +def do_export(filename, context, + EXPORT_APPLY_MODIFIERS = True, # not used + EXPORT_ROTX90 = True, # wrong + EXPORT_TRI = False, # ok + EXPORT_EDGES = False, + EXPORT_NORMALS = False, # not yet + EXPORT_NORMALS_HQ = False, # not yet + EXPORT_UV = True, # ok + EXPORT_MTL = True, + EXPORT_SEL_ONLY = True, # ok + EXPORT_ALL_SCENES = False, # XXX not working atm + EXPORT_ANIMATION = False, + EXPORT_COPY_IMAGES = 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): + # Window.EditMode(0) + # Window.WaitCursor(1) + + base_name, ext = splitExt(filename) + context_name = [base_name, '', '', ext] # Base name, scene name, frame number, extension + + orig_scene = context.scene + +# if EXPORT_ALL_SCENES: +# export_scenes = bpy.data.scenes +# else: +# export_scenes = [orig_scene] + + # XXX only exporting one scene atm since changing + # current scene is not possible. + # Brecht says that ideally in 2.5 we won't need such a function, + # allowing multiple scenes open at once. + export_scenes = [orig_scene] + + # Export all scenes. + for scn in export_scenes: + # scn.makeCurrent() # If already current, this is not slow. + # context = scn.getRenderingContext() + orig_frame = scn.current_frame + + if EXPORT_ALL_SCENES: # Add scene name into the context_name + context_name[1] = '_%s' % BPySys_cleanName(scn.name) # WARNING, its possible that this could cause a collision. we could fix if were feeling parranoied. + + # Export an animation? + if EXPORT_ANIMATION: + scene_frames = range(scn.start_frame, context.end_frame+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. + for frame in scene_frames: + if EXPORT_ANIMATION: # Add frame to the filename. + context_name[2] = '_%.6d' % frame + + scn.current_frame = frame + if EXPORT_SEL_ONLY: + export_objects = context.selected_objects + else: + export_objects = scn.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. + write(full_path, export_objects, scn, + EXPORT_TRI, EXPORT_EDGES, EXPORT_NORMALS, + EXPORT_NORMALS_HQ, EXPORT_UV, EXPORT_MTL, + EXPORT_COPY_IMAGES, EXPORT_APPLY_MODIFIERS, + EXPORT_ROTX90, EXPORT_BLEN_OBS, + EXPORT_GROUP_BY_OB, EXPORT_GROUP_BY_MAT, EXPORT_KEEP_VERT_ORDER, + EXPORT_POLYGROUPS, EXPORT_CURVE_AS_NURBS) + + + scn.current_frame = orig_frame + + # Restore old active scene. +# orig_scene.makeCurrent() +# Window.WaitCursor(0) + + +class EXPORT_OT_obj(bpy.types.Operator): + ''' + Currently the exporter lacks these features: + * nurbs + * multiple scene export (only active scene is written) + * particles + ''' + __idname__ = "export.obj" + __label__ = 'Export OBJ' + + # List of operator properties, the attributes will be assigned + # to the class instance from the operator settings before calling. + + __props__ = [ + bpy.props.StringProperty(attr="path", name="File Path", description="File path used for exporting the OBJ file", maxlen= 1024, default= ""), + + # context group + bpy.props.BoolProperty(attr="use_selection", name="Selection Only", description="", default= False), + bpy.props.BoolProperty(attr="use_all_scenes", name="All Scenes", description="", default= False), + bpy.props.BoolProperty(attr="use_animation", name="All Animation", description="", default= False), + + # object group + bpy.props.BoolProperty(attr="use_modifiers", name="Apply Modifiers", description="", default= True), + bpy.props.BoolProperty(attr="use_rotate90", name="Rotate X90", description="", default= True), + + # extra data group + bpy.props.BoolProperty(attr="use_edges", name="Edges", description="", default= True), + bpy.props.BoolProperty(attr="use_normals", name="Normals", description="", default= False), + bpy.props.BoolProperty(attr="use_hq_normals", name="High Quality Normals", description="", default= True), + bpy.props.BoolProperty(attr="use_uvs", name="UVs", description="", default= True), + bpy.props.BoolProperty(attr="use_materials", name="Materials", description="", default= True), + bpy.props.BoolProperty(attr="copy_images", name="Copy Images", description="", default= False), + bpy.props.BoolProperty(attr="use_triangles", name="Triangulate", description="", default= False), + bpy.props.BoolProperty(attr="use_vertex_groups", name="Polygroups", description="", default= False), + bpy.props.BoolProperty(attr="use_nurbs", name="Nurbs", description="", default= False), + + # grouping group + bpy.props.BoolProperty(attr="use_blen_objects", name="Objects as OBJ Objects", description="", default= True), + bpy.props.BoolProperty(attr="group_by_object", name="Objects as OBJ Groups ", description="", default= False), + bpy.props.BoolProperty(attr="group_by_material", name="Material Groups", description="", default= False), + bpy.props.BoolProperty(attr="keep_vertex_order", name="Keep Vertex Order", description="", default= False) + ] + + def execute(self, context): + + do_export(self.path, context, + EXPORT_TRI=self.use_triangles, + EXPORT_EDGES=self.use_edges, + EXPORT_NORMALS=self.use_normals, + EXPORT_NORMALS_HQ=self.use_hq_normals, + EXPORT_UV=self.use_uvs, + EXPORT_MTL=self.use_materials, + EXPORT_COPY_IMAGES=self.copy_images, + EXPORT_APPLY_MODIFIERS=self.use_modifiers, + EXPORT_ROTX90=self.use_rotate90, + EXPORT_BLEN_OBS=self.use_blen_objects, + EXPORT_GROUP_BY_OB=self.group_by_object, + EXPORT_GROUP_BY_MAT=self.group_by_material, + EXPORT_KEEP_VERT_ORDER=self.keep_vertex_order, + EXPORT_POLYGROUPS=self.use_vertex_groups, + EXPORT_CURVE_AS_NURBS=self.use_nurbs, + EXPORT_SEL_ONLY=self.use_selection, + EXPORT_ALL_SCENES=self.use_all_scenes) + + return ('FINISHED',) + + def invoke(self, context, event): + wm = context.manager + wm.add_fileselect(self.__operator__) + return ('RUNNING_MODAL',) + + def poll(self, context): # Poll isnt working yet + print("Poll") + return context.active_object != None + +bpy.ops.add(EXPORT_OT_obj) + +if __name__ == "__main__": + bpy.ops.EXPORT_OT_obj(filename="/tmp/test.obj") + +# CONVERSION ISSUES +# - matrix problem +# - duplis - only tested dupliverts +# - NURBS - needs API additions +# - all scenes export +# + normals calculation +# - get rid of cleanName somehow |