forked from bartvdbraak/blender
144 lines
5.0 KiB
Python
144 lines
5.0 KiB
Python
#!BPY
|
|
|
|
"""
|
|
Name: 'Wavefront (*.obj)'
|
|
Blender: 232
|
|
Group: 'Export'
|
|
Tooltip: 'Save a Wavefront OBJ File'
|
|
"""
|
|
|
|
# --------------------------------------------------------------------------
|
|
# OBJ Export v0.9 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 *****
|
|
# --------------------------------------------------------------------------
|
|
|
|
#================================================#
|
|
# Gets the world matrix of an object #
|
|
# by multiplying by parents mat's recursively #
|
|
# This only works in some simple situations, #
|
|
# needs work.... #
|
|
#================================================#
|
|
def getWorldMat(ob):
|
|
mat = ob.getMatrix()
|
|
p = ob.getParent()
|
|
if p != None:
|
|
mat = mat + getWorldMat(p)
|
|
return mat
|
|
|
|
#==================#
|
|
# Apply Transform #
|
|
#==================#
|
|
def apply_transform(verts, matrix):
|
|
verts.resize4D()
|
|
return Mathutils.VecMultMat(verts, matrix)
|
|
|
|
#====================================================#
|
|
# Return a 6 deciaml point floating point value #
|
|
# as a string that dosent have any python chars #
|
|
#====================================================#
|
|
def saneFloat(float):
|
|
#return '%(float)b' % vars() # 6 fp as house.hqx
|
|
return str('%f' % float) + ' '
|
|
|
|
|
|
from Blender import *
|
|
|
|
NULL_MAT = '(null)'
|
|
|
|
def save_obj(filename):
|
|
|
|
file = open(filename, "w")
|
|
|
|
# Write Header
|
|
file.write('# Blender OBJ File: ' + Get('filename') + ' \n')
|
|
file.write('# www.blender.org\n')
|
|
|
|
# Get all meshs
|
|
for ob in Object.Get():
|
|
if ob.getType() == 'Mesh':
|
|
m = ob.getData()
|
|
if len(m.verts) > 0: # Make sure there is somthing to write.
|
|
|
|
# Set the default mat
|
|
currentMatName = ''
|
|
|
|
file.write('o ' + ob.getName() + '_' + m.name + '\n') # Write Object name
|
|
|
|
# Dosent work properly,
|
|
matrix = getWorldMat(ob)
|
|
|
|
# Vert
|
|
for v in m.verts:
|
|
# Transform the vert
|
|
vTx = apply_transform(v.co, matrix)
|
|
|
|
file.write('v ')
|
|
file.write(saneFloat(vTx[0]))
|
|
file.write(saneFloat(vTx[1]))
|
|
file.write(saneFloat(vTx[2]) + '\n')
|
|
|
|
# UV
|
|
for f in m.faces:
|
|
for uvIdx in range(len(f.v)):
|
|
file.write('vt ')
|
|
if f.uv:
|
|
file.write(saneFloat(f.uv[uvIdx][0]))
|
|
file.write(saneFloat(f.uv[uvIdx][1]))
|
|
else:
|
|
file.write('0.0 ')
|
|
file.write('0.0 ')
|
|
|
|
file.write('0.0' + '\n')
|
|
|
|
# NORMAL
|
|
for f in m.faces:
|
|
for v in f.v:
|
|
# Transform the normal
|
|
noTx = apply_transform(v.no, matrix)
|
|
noTx.normalize()
|
|
file.write('vn ')
|
|
file.write(saneFloat(noTx[0]))
|
|
file.write(saneFloat(noTx[1]))
|
|
file.write(saneFloat(noTx[2]) + '\n')
|
|
|
|
uvIdx = 0
|
|
for f in m.faces:
|
|
# Check material and change if needed.
|
|
if len(m.materials) > f.mat:
|
|
if currentMatName != m.materials[f.mat].getName():
|
|
currentMatName = m.materials[f.mat].getName()
|
|
file.write('usemtl ' + currentMatName + '\n')
|
|
|
|
elif currentMatName != NULL_MAT:
|
|
currentMatName = NULL_MAT
|
|
file.write('usemtl ' + currentMatName + '\n')
|
|
|
|
file.write('f ')
|
|
for v in f.v:
|
|
file.write( str(m.verts.index(v) +1) + '/') # Vert IDX
|
|
file.write( str(uvIdx +1) + '/') # UV IDX
|
|
file.write( str(uvIdx +1) + ' ') # NORMAL IDX
|
|
uvIdx+=1
|
|
file.write('\n')
|
|
|
|
file.close()
|
|
|
|
Window.FileSelector(save_obj, 'SELECT OBJ FILE')
|