forked from bartvdbraak/blender
b970eadedf
- updating some bundled scripts, thanks to authors Jean-Michel Soler, Campbell Barton and Anthony D'Agostino. BPython: - removing wrong fix from BGL.c's glDrawPixels. note: applied guitargeek's setName patch to Blender.Key, but saw that he updated it with more functionality and assigned to stivs, so I won't commit this old version.
336 lines
9.9 KiB
Python
336 lines
9.9 KiB
Python
#!BPY
|
|
|
|
"""
|
|
Name: 'Wavefront (.obj)...'
|
|
Blender: 232
|
|
Group: 'Export'
|
|
Tooltip: 'Save a Wavefront OBJ File'
|
|
"""
|
|
|
|
__author__ = "Campbell Barton, Jiri Hnidek"
|
|
__url__ = ["blender", "elysiun"]
|
|
__version__ = "1.0"
|
|
|
|
__bpydoc__ = """\
|
|
This script is an exporter to OBJ file format.
|
|
|
|
Usage:
|
|
|
|
Run this script from "File->Export" menu to export all meshes.
|
|
"""
|
|
|
|
|
|
# --------------------------------------------------------------------------
|
|
# OBJ Export v0.9b 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 *****
|
|
# --------------------------------------------------------------------------
|
|
|
|
#==================================================#
|
|
# New name based on old with a different extension #
|
|
#==================================================#
|
|
def newFName(ext):
|
|
return Get('filename')[: -len(Get('filename').split('.', -1)[-1]) ] + ext
|
|
|
|
|
|
def fixName(name):
|
|
if name == None:
|
|
return 'None'
|
|
else:
|
|
return name.replace(' ', '_')
|
|
|
|
|
|
|
|
|
|
from Blender import *
|
|
|
|
global MTL_DICT
|
|
|
|
# A Dict of Materials
|
|
# (material.name, image.name):matname_imagename # matname_imagename has gaps removed.
|
|
MTL_DICT = {}
|
|
|
|
def save_mtl(filename):
|
|
global MTL_DICT
|
|
|
|
world = World.GetCurrent()
|
|
if world:
|
|
worldAmb = world.getAmb()
|
|
else:
|
|
worldAmb = (0,0,0) # Default value
|
|
|
|
file = open(filename, "w")
|
|
file.write('# Blender MTL File: %s\n' % 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 in MTL_DICT.iteritems():
|
|
|
|
# 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 key[0] == None:
|
|
#write a dummy material here?
|
|
file.write('Ns 0\n')
|
|
file.write('Ka %s %s %s\n' % tuple([round(c, 6) 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
|
|
|
|
else:
|
|
mat = Material.Get(key[0])
|
|
file.write('Ns %s\n' % round((mat.getHardness()-1) * 1.9607843137254901 ) ) # Hardness, convert blenders 1-511 to MTL's
|
|
file.write('Ka %s %s %s\n' % tuple([round(c*mat.getAmb(), 6) for c in worldAmb]) ) # Ambient, uses mirror colour,
|
|
file.write('Kd %s %s %s\n' % tuple([round(c*mat.getRef(), 6) for c in mat.getRGBCol()]) ) # Diffuse
|
|
file.write('Ks %s %s %s\n' % tuple([round(c*mat.getSpec(), 6) for c in mat.getSpecCol()]) ) # Specular
|
|
file.write('Ni %s\n' % round(mat.getIOR(), 6)) # Refraction index
|
|
file.write('d %s\n' % round(mat.getAlpha(), 6)) # 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.getMode() & Material.Modes['SHADELESS']:
|
|
file.write('illum 0\n') # ignore lighting
|
|
elif mat.getSpec() == 0:
|
|
file.write('illum 1\n') # no specular.
|
|
else:
|
|
file.write('illum 2\n') # light normaly
|
|
|
|
|
|
# Write images!
|
|
if key[1] != None: # We have an image on the face!
|
|
img = Image.Get(key[1])
|
|
file.write('map_Kd %s\n' % img.filename.split('\\')[-1].split('/')[-1]) # Diffuse mapping image
|
|
|
|
elif key[0] != None: # No face image. if we havea material search for MTex image.
|
|
for mtex in mat.getTextures():
|
|
if mtex and mtex.tex.type == Texture.Types.IMAGE:
|
|
try:
|
|
filename = mtex.tex.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()
|
|
|
|
|
|
|
|
def save_obj(filename):
|
|
global MTL_DICT
|
|
|
|
time1 = sys.time()
|
|
scn = Scene.GetCurrent()
|
|
|
|
file = open(filename, "w")
|
|
|
|
# Write Header
|
|
file.write('# Blender OBJ File: %s\n' % (Get('filename').split('/')[-1].split('\\')[-1] ))
|
|
file.write('# www.blender.org\n')
|
|
|
|
# Tell the obj file what material file to use.
|
|
mtlfilename = '%s.mtl' % '.'.join(filename.split('.')[:-1])
|
|
file.write('mtllib %s\n' % ( mtlfilename.split('\\')[-1].split('/')[-1] ))
|
|
|
|
# Initialize totals, these are updated each object
|
|
totverts = totuvco = totno = 1
|
|
|
|
globalUVCoords = {}
|
|
globalNormals = {}
|
|
|
|
# Get all meshs
|
|
for ob in scn.getChildren():
|
|
#for ob in Object.GetSelected():
|
|
try:
|
|
# Will work for non meshes now! :)
|
|
m = NMesh.GetRawFromObject(ob.name)
|
|
except:
|
|
continue
|
|
|
|
faces = [ f for f in m.faces if len(f) > 2 ]
|
|
|
|
if not faces: # Make sure there is somthing to write
|
|
continue # dont bother with this mesh.
|
|
|
|
m.transform(ob.matrix)
|
|
|
|
# # Crash Blender
|
|
#materials = m.getMaterials(1) # 1 == will return None in the list.
|
|
materials = m.getMaterials()
|
|
|
|
|
|
if materials:
|
|
materialNames = map(lambda mat: mat.name, materials) # Bug Blender, dosent account for null materials, still broken.
|
|
else:
|
|
materialNames = []
|
|
|
|
# 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])
|
|
|
|
|
|
# Sort by Material, then images
|
|
# so we dont over context switch in the obj file.
|
|
faces.sort(lambda a,b: cmp((a.mat, a.image, a.smooth), (b.mat, b.image, b.smooth)))
|
|
|
|
|
|
# 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.
|
|
|
|
file.write('o %s_%s\n' % (fixName(ob.name), fixName(m.name))) # Write Object name
|
|
|
|
# Vert
|
|
for v in m.verts:
|
|
file.write('v %.6f %.6f %.6f\n' % tuple(v.co))
|
|
|
|
# UV
|
|
if m.hasFaceUV():
|
|
for f in faces:
|
|
for uvKey in f.uv:
|
|
if not globalUVCoords.has_key(uvKey):
|
|
globalUVCoords[uvKey] = totuvco
|
|
totuvco +=1
|
|
file.write('vt %.6f %.6f 0.0\n' % uvKey)
|
|
|
|
# NORMAL, Smooth/Non smoothed.
|
|
|
|
for f in faces:
|
|
if f.smooth:
|
|
for v in f.v:
|
|
noKey = tuple(v.no)
|
|
if not globalNormals.has_key( noKey ):
|
|
globalNormals[noKey] = totno
|
|
totno +=1
|
|
file.write('vn %.6f %.6f %.6f\n' % noKey)
|
|
else:
|
|
# Hard, 1 normal from the face.
|
|
noKey = tuple(f.no)
|
|
if not globalNormals.has_key( noKey ):
|
|
globalNormals[noKey] = totno
|
|
totno +=1
|
|
file.write('vn %.6f %.6f %.6f\n' % noKey)
|
|
|
|
|
|
uvIdx = 0
|
|
for f in faces:
|
|
|
|
# MAKE KEY
|
|
if f.image: # Object is always true.
|
|
key = materialNames[f.mat], f.image.name
|
|
else:
|
|
key = materialNames[f.mat], None # No image, use None instead.
|
|
|
|
# CHECK FOR CONTEXT SWITCH
|
|
if key == contextMat:
|
|
pass # Context alredy switched, dont do anythoing
|
|
elif key[0] == None and key[1] == None:
|
|
# Write a null material, since we know the context has changed.
|
|
file.write('usemtl (null)\n') # mat, image
|
|
|
|
else:
|
|
try: # Faster to try then 2x dict lookups.
|
|
|
|
# We have the material, just need to write the context switch,
|
|
file.write('usemtl %s\n' % MTL_DICT[key]) # mat, image
|
|
|
|
except KeyError:
|
|
# 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:
|
|
tmp_matname = MTL_DICT[key] ='%s' % fixName(key[0])
|
|
file.write('usemtl %s\n' % tmp_matname) # mat, image
|
|
|
|
else:
|
|
tmp_matname = MTL_DICT[key] = '%s_%s' % (fixName(key[0]), fixName(key[1]))
|
|
file.write('usemtl %s\n' % tmp_matname) # mat, image
|
|
|
|
contextMat = key
|
|
|
|
if f.smooth != contextSmooth:
|
|
if f.smooth:
|
|
file.write('s 1\n')
|
|
else:
|
|
file.write('s off\n')
|
|
contextSmooth = f.smooth
|
|
|
|
file.write('f')
|
|
if m.hasFaceUV():
|
|
if f.smooth: # Smoothed, use vertex normals
|
|
for vi, v in enumerate(f.v):
|
|
file.write( ' %d/%d/%d' % (\
|
|
v.index+totverts,\
|
|
globalUVCoords[ f.uv[vi] ],\
|
|
globalNormals[ tuple(v.no) ])) # vert, uv, normal
|
|
else: # No smoothing, face normals
|
|
no = globalNormals[ tuple(f.no) ]
|
|
for vi, v in enumerate(f.v):
|
|
file.write( ' %d/%d/%d' % (\
|
|
v.index+totverts,\
|
|
globalUVCoords[ f.uv[vi] ],\
|
|
no)) # vert, uv, normal
|
|
|
|
else: # No UV's
|
|
if f.smooth: # Smoothed, use vertex normals
|
|
for v in f.v:
|
|
file.write( ' %d//%d' % (\
|
|
v.index+totverts,\
|
|
globalNormals[ tuple(v.no) ]))
|
|
else: # No smoothing, face normals
|
|
no = globalNormals[ tuple(f.no) ]
|
|
for v in f.v:
|
|
file.write( ' %d//%d' % (\
|
|
v.index+totverts,\
|
|
no))
|
|
|
|
file.write('\n')
|
|
|
|
# Make the indicies global rather then per mesh
|
|
totverts += len(m.verts)
|
|
file.close()
|
|
|
|
|
|
# Now we have all our materials, save them
|
|
save_mtl(mtlfilename)
|
|
|
|
print "obj export time: %.2f" % (sys.time() - time1)
|
|
|
|
Window.FileSelector(save_obj, 'Export Wavefront OBJ', newFName('obj'))
|
|
|
|
'''
|
|
TIME = sys.time()
|
|
import os
|
|
OBJDIR = '/obj_out/'
|
|
for scn in Scene.Get():
|
|
scn.makeCurrent()
|
|
obj = OBJDIR + scn.name
|
|
print obj
|
|
save_obj(obj)
|
|
|
|
print "TOTAL EXPORT TIME: ", sys.time() - TIME
|
|
'''
|