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Blender-ZeroEngine-MSH2-Plugin/src_research_readme/blender_2.43_scripts/import_obj.py

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#!BPY
"""
Name: 'Wavefront (.obj)...'
Blender: 249
Group: 'Import'
Tooltip: 'Load a Wavefront OBJ File, Shift: batch import all dir.'
"""
__author__= "Campbell Barton", "Jiri Hnidek", "Paolo Ciccone"
__url__= ['http://wiki.blender.org/index.php/Scripts/Manual/Import/wavefront_obj', 'blender.org', 'blenderartists.org']
__version__= "2.13"
__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.
"""
# ***** BEGIN GPL LICENSE BLOCK *****
#
# Script copyright (C) Campbell J Barton 2007-2009
# - V2.12- bspline import/export added (funded by PolyDimensions GmbH)
#
# 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 *****
# --------------------------------------------------------------------------
from Blender import Mesh, Draw, Window, Texture, Material, sys
import bpy
import BPyMesh
import BPyImage
import BPyMessages
try: import os
except: os= False
# Generic path functions
def stripFile(path):
'''Return directory, where the file is'''
lastSlash= max(path.rfind('\\'), path.rfind('/'))
if lastSlash != -1:
path= path[:lastSlash]
return '%s%s' % (path, sys.sep)
def stripPath(path):
'''Strips the slashes from the back of a string'''
return path.split('/')[-1].split('\\')[-1]
def stripExt(name): # name is a string
'''Strips the prefix off the name before writing'''
index= name.rfind('.')
if index != -1:
return name[ : index ]
else:
return name
# end path funcs
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:] )
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= stripFile(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(type)
texture.setType('Image')
# Absolute path - c:\.. etc would work here
image= obj_image_load(imagepath, DIR, IMAGE_SEARCH)
has_data = image.has_data
texture.image = image
if not has_data:
try:
# first time using this image. We need to load it first
image.glLoad()
except:
# probably the image is crashed
pass
else:
has_data = image.has_data
# Adds textures for materials (rendering)
if type == 'Kd':
if has_data and image.depth == 32:
# Image has alpha
blender_material.setTexture(0, texture, Texture.TexCo.UV, Texture.MapTo.COL | Texture.MapTo.ALPHA)
texture.setImageFlags('MipMap', 'InterPol', 'UseAlpha')
blender_material.mode |= Material.Modes.ZTRANSP
blender_material.alpha = 0.0
else:
blender_material.setTexture(0, texture, Texture.TexCo.UV, Texture.MapTo.COL)
# 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.setTexture(1, texture, Texture.TexCo.UV, Texture.MapTo.CMIR) # TODO- Add AMB to BPY API
elif type == 'Ks':
blender_material.setTexture(2, texture, Texture.TexCo.UV, Texture.MapTo.SPEC)
elif type == 'Bump':
blender_material.setTexture(3, texture, Texture.TexCo.UV, Texture.MapTo.NOR)
elif type == 'D':
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.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= stripExt(stripPath(filepath))+ '.mtl'
if sys.exists(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= DIR + libname
if not sys.exists(mtlpath):
#print '\tError Missing MTL: "%s"' % mtlpath
pass
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 unique_materials.has_key(context_material_name):
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.setMirCol((float(line_split[1]), float(line_split[2]), float(line_split[3])))
elif line_lower.startswith('kd'):
context_material.setRGBCol((float(line_split[1]), float(line_split[2]), float(line_split[3])))
elif line_lower.startswith('ks'):
context_material.setSpecCol((float(line_split[1]), float(line_split[2]), float(line_split[3])))
elif line_lower.startswith('ns'):
context_material.setHardness( int((float(line_split[1])*0.51)) )
elif line_lower.startswith('ni'): # Refraction index
context_material.setIOR( max(1, min(float(line_split[1]), 3))) # Between 1 and 3
elif line_lower.startswith('d') or line_lower.startswith('tr'):
context_material.setAlpha(float(line_split[1]))
context_material.mode |= Material.Modes.ZTRANSP
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, SPLIT_MATERIALS):
'''
Takes vert_loc and faces, and seperates into multiple sets of
(verts_loc, faces, unique_materials, dataname)
This is done so objects do not overload the 16 material limit.
'''
filename = stripExt(stripPath(filepath))
if not SPLIT_OB_OR_GROUP and not SPLIT_MATERIALS:
# 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 type(key) == tuple:
return '%s_%s' % key
elif 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.
if SPLIT_OB_OR_GROUP and not SPLIT_MATERIALS:
def face_key(face):
return face[4] # object
elif not SPLIT_OB_OR_GROUP and SPLIT_MATERIALS:
def face_key(face):
return face[2] # material
else: # Both
def face_key(face):
return face[4], face[2] # object,material
face_split_dict= {}
oldkey= -1 # initialize to a value that will never match the key
for face in faces:
key= face_key(face)
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 not unique_materials_split.has_key(matname):
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 face_split_dict.iteritems()]
def create_mesh(scn, 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= dict([ (context_smooth_group, {}) for context_smooth_group in unique_smooth_groups.iterkeys() ])
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 xrange(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 xrange(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 xrange(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.iteritems():
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 smooth_group_users.itervalues():
for key, users in edge_dict.iteritems():
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= dict([(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.iteritems():
materials[index]= unique_materials[name]
me= bpy.data.meshes.new(dataname)
me.materials= materials[0:16] # make sure the list isnt too big.
#me.verts.extend([(0,0,0)]) # dummy vert
me.verts.extend(verts_loc)
face_mapping= me.faces.extend([f[0] for f in faces], indexList=True)
if verts_tex and me.faces:
me.faceUV= 1
# TEXMODE= Mesh.FaceModes['TEX']
context_material_old= -1 # avoid a dict lookup
mat= 0 # rare case it may be un-initialized.
me_faces= me.faces
ALPHA= Mesh.FaceTranspModes.ALPHA
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:
face_index_map= face_mapping[i]
if face_index_map!=None: # None means the face wasnt added
blender_face= me_faces[face_index_map]
face_vert_loc_indicies,\
face_vert_tex_indicies,\
context_material,\
context_smooth_group,\
context_object= face
if context_smooth_group:
blender_face.smooth= True
if context_material:
if context_material_old is not context_material:
mat= material_mapping[context_material]
if mat>15:
mat= 15
context_material_old= context_material
blender_face.mat= mat
if verts_tex:
if context_material:
image, has_data= unique_material_images[context_material]
if image: # Can be none if the material dosnt have an image.
blender_face.image= image
if has_data and image.depth == 32:
blender_face.transp |= 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
for ii, uv in enumerate(blender_face.uv):
uv.x, uv.y= verts_tex[face_vert_tex_indicies[ii]]
del me_faces
del ALPHA
# Add edge faces.
me_edges= me.edges
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
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
if CREATE_EDGES:
me_edges.extend( edges )
del me_edges
me.calcNormals()
ob= scn.objects.new(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.iteritems():
me.addVertGroup(group_name)
me.assignVertsToGroup(group_name, group_indicies,1.00, Mesh.AssignModes.REPLACE)
def create_nurbs(scn, 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', None)
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', None)
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.flag |= 1 # 3D curve
nu = None
for pt in curv_idx:
pt = vert_loc[pt]
pt = (pt[0], pt[1], pt[2], 1.0)
if nu == None:
nu = cu.appendNurb(pt)
else:
nu.append(pt)
nu.orderU = 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 xrange(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.flagU |= 2
# 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.flagU |= 1
'''
ob = scn.objects.new(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,
CLAMP_SIZE= 0.0,
CREATE_FGONS= True,
CREATE_SMOOTH_GROUPS= True,
CREATE_EDGES= True,
SPLIT_OBJECTS= True,
SPLIT_GROUPS= True,
SPLIT_MATERIALS= 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 "%s"' % filepath
if SPLIT_OBJECTS or SPLIT_GROUPS or SPLIT_MATERIALS:
POLYGROUPS = False
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 "%s"...' % filepath,
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= 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= 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
scn = bpy.data.scenes.active
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, SPLIT_MATERIALS):
# Create meshes from the data, warning 'vertex_groups' wont support splitting
create_mesh(scn, 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(scn, context_nurbs, verts_loc, new_objects)
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= sys.time()
print '%.4f sec' % (time_new-time_sub)
print 'finished importing: "%s" 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, SPLIT_MATERIALS, 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)
SPLIT_MATERIALS= 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'),\
('Material', SPLIT_MATERIALS, 'Import each material into a seperate mesh (Avoids > 16 per mesh error)'),\
'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
SPLIT_MATERIALS.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, SPLIT_MATERIALS, KEEP_VERT_ORDER, POLYGROUPS
if SPLIT_OBJECTS.val or SPLIT_GROUPS.val or SPLIT_MATERIALS.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, SPLIT_MATERIALS, KEEP_VERT_ORDER
if KEEP_VERT_ORDER.val:
SPLIT_OBJECTS.val = SPLIT_GROUPS.val = SPLIT_MATERIALS.val = 0
else:
if not (SPLIT_OBJECTS.val or SPLIT_GROUPS.val or SPLIT_MATERIALS.val):
KEEP_VERT_ORDER.val = 1
def do_polygroups(e,v):
global SPLIT_OBJECTS, SPLIT_GROUPS, SPLIT_MATERIALS, KEEP_VERT_ORDER, POLYGROUPS
if POLYGROUPS.val:
SPLIT_OBJECTS.val = SPLIT_GROUPS.val = SPLIT_MATERIALS.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, SPLIT_MATERIALS, 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)
SPLIT_MATERIALS = Draw.Toggle('Material', EVENT_REDRAW, ui_x+119, ui_y+89, 60, 21, SPLIT_MATERIALS.val, 'Import each material into a seperate mesh (Avoids > 16 per mesh error)', 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( stripExt(f) )
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,\
SPLIT_MATERIALS.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,\
SPLIT_MATERIALS.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)
'''
#load_obj('/test.obj')
#load_obj('/fe/obj/mba1.obj')
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