forked from bartvdbraak/blender
1158 lines
38 KiB
Python
1158 lines
38 KiB
Python
# coding: utf-8
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# ##### BEGIN GPL LICENSE BLOCK #####
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License
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# as published by the Free Software Foundation; either version 2
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# of the License, or (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software Foundation,
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# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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#
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# ##### END GPL LICENSE BLOCK #####
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# <pep8 compliant>
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__author__ = ["Campbell Barton", "Bob Holcomb", "Richard Lärkäng", "Damien McGinnes", "Mark Stijnman"]
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__url__ = ("blenderartists.org", "www.blender.org", "www.gametutorials.com", "lib3ds.sourceforge.net/")
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__version__ = "0.90a"
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__bpydoc__ = """\
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3ds Exporter
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This script Exports a 3ds file.
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Exporting is based on 3ds loader from www.gametutorials.com(Thanks DigiBen) and using information
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from the lib3ds project (http://lib3ds.sourceforge.net/) sourcecode.
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"""
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# ***** BEGIN GPL LICENSE BLOCK *****
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#
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# Script copyright (C) Bob Holcomb
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License
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# as published by the Free Software Foundation; either version 2
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# of the License, or (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software Foundation,
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# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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#
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# ***** END GPL LICENCE BLOCK *****
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# --------------------------------------------------------------------------
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######################################################
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# Importing modules
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######################################################
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import struct
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import os
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import time
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import bpy
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# import Blender
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# from BPyMesh import getMeshFromObject
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# from BPyObject import getDerivedObjects
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# try:
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# import struct
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# except:
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# struct = None
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# also used by X3D exporter
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# return a tuple (free, object list), free is True if memory should be freed later with free_derived_objects()
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def create_derived_objects(scene, ob):
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if ob.parent and ob.parent.dupli_type != 'NONE':
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return False, None
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if ob.dupli_type != 'NONE':
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ob.create_dupli_list(scene)
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return True, [(dob.object, dob.matrix) for dob in ob.dupli_list]
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else:
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return False, [(ob, ob.matrix_world)]
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# also used by X3D exporter
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def free_derived_objects(ob):
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ob.free_dupli_list()
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# So 3ds max can open files, limit names to 12 in length
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# this is verry annoying for filenames!
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name_unique = []
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name_mapping = {}
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def sane_name(name):
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name_fixed = name_mapping.get(name)
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if name_fixed != None:
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return name_fixed
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if len(name) > 12:
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new_name = name[:12]
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else:
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new_name = name
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i = 0
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while new_name in name_unique:
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new_name = new_name[:-4] + '.%.3d' % i
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i+=1
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name_unique.append(new_name)
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name_mapping[name] = new_name
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return new_name
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######################################################
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# Data Structures
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######################################################
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#Some of the chunks that we will export
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#----- Primary Chunk, at the beginning of each file
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PRIMARY= int("0x4D4D",16)
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#------ Main Chunks
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OBJECTINFO = int("0x3D3D",16); #This gives the version of the mesh and is found right before the material and object information
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VERSION = int("0x0002",16); #This gives the version of the .3ds file
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KFDATA = int("0xB000",16); #This is the header for all of the key frame info
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#------ sub defines of OBJECTINFO
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MATERIAL=45055 #0xAFFF // This stored the texture info
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OBJECT=16384 #0x4000 // This stores the faces, vertices, etc...
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#>------ sub defines of MATERIAL
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MATNAME = int("0xA000",16); # This holds the material name
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MATAMBIENT = int("0xA010",16); # Ambient color of the object/material
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MATDIFFUSE = int("0xA020",16); # This holds the color of the object/material
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MATSPECULAR = int("0xA030",16); # SPecular color of the object/material
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MATSHINESS = int("0xA040",16); # ??
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MATMAP = int("0xA200",16); # This is a header for a new material
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MATMAPFILE = int("0xA300",16); # This holds the file name of the texture
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RGB1= int("0x0011",16)
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RGB2= int("0x0012",16)
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#>------ sub defines of OBJECT
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OBJECT_MESH = int("0x4100",16); # This lets us know that we are reading a new object
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OBJECT_LIGHT = int("0x4600",16); # This lets un know we are reading a light object
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OBJECT_CAMERA= int("0x4700",16); # This lets un know we are reading a camera object
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#>------ sub defines of CAMERA
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OBJECT_CAM_RANGES= int("0x4720",16); # The camera range values
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#>------ sub defines of OBJECT_MESH
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OBJECT_VERTICES = int("0x4110",16); # The objects vertices
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OBJECT_FACES = int("0x4120",16); # The objects faces
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OBJECT_MATERIAL = int("0x4130",16); # This is found if the object has a material, either texture map or color
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OBJECT_UV = int("0x4140",16); # The UV texture coordinates
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OBJECT_TRANS_MATRIX = int("0x4160",16); # The Object Matrix
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#>------ sub defines of KFDATA
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KFDATA_KFHDR = int("0xB00A",16);
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KFDATA_KFSEG = int("0xB008",16);
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KFDATA_KFCURTIME = int("0xB009",16);
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KFDATA_OBJECT_NODE_TAG = int("0xB002",16);
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#>------ sub defines of OBJECT_NODE_TAG
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OBJECT_NODE_ID = int("0xB030",16);
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OBJECT_NODE_HDR = int("0xB010",16);
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OBJECT_PIVOT = int("0xB013",16);
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OBJECT_INSTANCE_NAME = int("0xB011",16);
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POS_TRACK_TAG = int("0xB020",16);
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ROT_TRACK_TAG = int("0xB021",16);
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SCL_TRACK_TAG = int("0xB022",16);
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def uv_key(uv):
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return round(uv[0], 6), round(uv[1], 6)
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# return round(uv.x, 6), round(uv.y, 6)
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# size defines:
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SZ_SHORT = 2
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SZ_INT = 4
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SZ_FLOAT = 4
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class _3ds_short(object):
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'''Class representing a short (2-byte integer) for a 3ds file.
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*** This looks like an unsigned short H is unsigned from the struct docs - Cam***'''
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__slots__ = 'value'
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def __init__(self, val=0):
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self.value=val
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def get_size(self):
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return SZ_SHORT
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def write(self,file):
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file.write(struct.pack("<H", self.value))
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def __str__(self):
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return str(self.value)
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class _3ds_int(object):
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'''Class representing an int (4-byte integer) for a 3ds file.'''
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__slots__ = 'value'
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def __init__(self, val=0):
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self.value=val
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def get_size(self):
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return SZ_INT
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def write(self,file):
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file.write(struct.pack("<I", self.value))
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def __str__(self):
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return str(self.value)
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class _3ds_float(object):
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'''Class representing a 4-byte IEEE floating point number for a 3ds file.'''
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__slots__ = 'value'
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def __init__(self, val=0.0):
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self.value=val
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def get_size(self):
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return SZ_FLOAT
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def write(self,file):
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file.write(struct.pack("<f", self.value))
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def __str__(self):
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return str(self.value)
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class _3ds_string(object):
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'''Class representing a zero-terminated string for a 3ds file.'''
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__slots__ = 'value'
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def __init__(self, val=""):
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self.value=val
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def get_size(self):
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return (len(self.value)+1)
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def write(self,file):
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binary_format = "<%ds" % (len(self.value)+1)
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file.write(struct.pack(binary_format, self.value))
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def __str__(self):
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return self.value
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class _3ds_point_3d(object):
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'''Class representing a three-dimensional point for a 3ds file.'''
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__slots__ = 'x','y','z'
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def __init__(self, point=(0.0,0.0,0.0)):
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self.x, self.y, self.z = point
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def get_size(self):
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return 3*SZ_FLOAT
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def write(self,file):
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file.write(struct.pack('<3f', self.x, self.y, self.z))
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def __str__(self):
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return '(%f, %f, %f)' % (self.x, self.y, self.z)
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# Used for writing a track
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"""
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class _3ds_point_4d(object):
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'''Class representing a four-dimensional point for a 3ds file, for instance a quaternion.'''
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__slots__ = 'x','y','z','w'
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def __init__(self, point=(0.0,0.0,0.0,0.0)):
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self.x, self.y, self.z, self.w = point
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def get_size(self):
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return 4*SZ_FLOAT
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def write(self,file):
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data=struct.pack('<4f', self.x, self.y, self.z, self.w)
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file.write(data)
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def __str__(self):
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return '(%f, %f, %f, %f)' % (self.x, self.y, self.z, self.w)
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"""
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class _3ds_point_uv(object):
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'''Class representing a UV-coordinate for a 3ds file.'''
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__slots__ = 'uv'
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def __init__(self, point=(0.0,0.0)):
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self.uv = point
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def __cmp__(self, other):
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return cmp(self.uv,other.uv)
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def get_size(self):
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return 2*SZ_FLOAT
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def write(self,file):
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data=struct.pack('<2f', self.uv[0], self.uv[1])
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file.write(data)
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def __str__(self):
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return '(%g, %g)' % self.uv
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class _3ds_rgb_color(object):
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'''Class representing a (24-bit) rgb color for a 3ds file.'''
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__slots__ = 'r','g','b'
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def __init__(self, col=(0,0,0)):
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self.r, self.g, self.b = col
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def get_size(self):
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return 3
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def write(self,file):
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file.write( struct.pack('<3B', int(255*self.r), int(255*self.g), int(255*self.b) ) )
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# file.write( struct.pack('<3c', chr(int(255*self.r)), chr(int(255*self.g)), chr(int(255*self.b)) ) )
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def __str__(self):
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return '{%f, %f, %f}' % (self.r, self.g, self.b)
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class _3ds_face(object):
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'''Class representing a face for a 3ds file.'''
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__slots__ = 'vindex'
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def __init__(self, vindex):
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self.vindex = vindex
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def get_size(self):
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return 4*SZ_SHORT
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def write(self,file):
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# The last zero is only used by 3d studio
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file.write(struct.pack("<4H", self.vindex[0],self.vindex[1], self.vindex[2], 0))
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def __str__(self):
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return '[%d %d %d]' % (self.vindex[0],self.vindex[1], self.vindex[2])
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class _3ds_array(object):
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'''Class representing an array of variables for a 3ds file.
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Consists of a _3ds_short to indicate the number of items, followed by the items themselves.
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'''
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__slots__ = 'values', 'size'
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def __init__(self):
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self.values=[]
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self.size=SZ_SHORT
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# add an item:
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def add(self,item):
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self.values.append(item)
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self.size+=item.get_size()
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def get_size(self):
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return self.size
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def write(self,file):
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_3ds_short(len(self.values)).write(file)
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#_3ds_int(len(self.values)).write(file)
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for value in self.values:
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value.write(file)
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# To not overwhelm the output in a dump, a _3ds_array only
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# outputs the number of items, not all of the actual items.
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def __str__(self):
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return '(%d items)' % len(self.values)
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class _3ds_named_variable(object):
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'''Convenience class for named variables.'''
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__slots__ = 'value', 'name'
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def __init__(self, name, val=None):
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self.name=name
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self.value=val
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def get_size(self):
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if (self.value==None):
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return 0
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else:
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return self.value.get_size()
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def write(self, file):
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if (self.value!=None):
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self.value.write(file)
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def dump(self,indent):
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if (self.value!=None):
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spaces=""
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for i in range(indent):
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spaces+=" ";
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if (self.name!=""):
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print(spaces, self.name, " = ", self.value)
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else:
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print(spaces, "[unnamed]", " = ", self.value)
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#the chunk class
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class _3ds_chunk(object):
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'''Class representing a chunk in a 3ds file.
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Chunks contain zero or more variables, followed by zero or more subchunks.
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'''
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__slots__ = 'ID', 'size', 'variables', 'subchunks'
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def __init__(self, id=0):
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self.ID=_3ds_short(id)
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self.size=_3ds_int(0)
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self.variables=[]
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self.subchunks=[]
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def set_ID(id):
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self.ID=_3ds_short(id)
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def add_variable(self, name, var):
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'''Add a named variable.
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The name is mostly for debugging purposes.'''
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self.variables.append(_3ds_named_variable(name,var))
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def add_subchunk(self, chunk):
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'''Add a subchunk.'''
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self.subchunks.append(chunk)
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def get_size(self):
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'''Calculate the size of the chunk and return it.
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The sizes of the variables and subchunks are used to determine this chunk\'s size.'''
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tmpsize=self.ID.get_size()+self.size.get_size()
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for variable in self.variables:
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tmpsize+=variable.get_size()
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for subchunk in self.subchunks:
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tmpsize+=subchunk.get_size()
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self.size.value=tmpsize
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return self.size.value
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def write(self, file):
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'''Write the chunk to a file.
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Uses the write function of the variables and the subchunks to do the actual work.'''
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#write header
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self.ID.write(file)
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self.size.write(file)
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for variable in self.variables:
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variable.write(file)
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for subchunk in self.subchunks:
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subchunk.write(file)
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def dump(self, indent=0):
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'''Write the chunk to a file.
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Dump is used for debugging purposes, to dump the contents of a chunk to the standard output.
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Uses the dump function of the named variables and the subchunks to do the actual work.'''
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spaces=""
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for i in range(indent):
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spaces+=" ";
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print(spaces, "ID=", hex(self.ID.value), "size=", self.get_size())
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for variable in self.variables:
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variable.dump(indent+1)
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for subchunk in self.subchunks:
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subchunk.dump(indent+1)
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######################################################
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# EXPORT
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######################################################
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def get_material_images(material):
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# blender utility func.
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if material:
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return [s.texture.image for s in material.texture_slots if s and s.texture.type == 'IMAGE' and s.texture.image]
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return []
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# images = []
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# if material:
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# for mtex in material.getTextures():
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# if mtex and mtex.tex.type == Blender.Texture.Types.IMAGE:
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# image = mtex.tex.image
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# if image:
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# images.append(image) # maye want to include info like diffuse, spec here.
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# return images
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def make_material_subchunk(id, color):
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'''Make a material subchunk.
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Used for color subchunks, such as diffuse color or ambient color subchunks.'''
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mat_sub = _3ds_chunk(id)
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col1 = _3ds_chunk(RGB1)
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col1.add_variable("color1", _3ds_rgb_color(color));
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mat_sub.add_subchunk(col1)
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# optional:
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# col2 = _3ds_chunk(RGB1)
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# col2.add_variable("color2", _3ds_rgb_color(color));
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# mat_sub.add_subchunk(col2)
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return mat_sub
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def make_material_texture_chunk(id, images):
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"""Make Material Map texture chunk
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"""
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mat_sub = _3ds_chunk(id)
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def add_image(img):
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filename = os.path.basename(image.filepath)
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mat_sub_file = _3ds_chunk(MATMAPFILE)
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mat_sub_file.add_variable("mapfile", _3ds_string(sane_name(filename)))
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mat_sub.add_subchunk(mat_sub_file)
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for image in images:
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add_image(image)
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return mat_sub
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def make_material_chunk(material, image):
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'''Make a material chunk out of a blender material.'''
|
|
material_chunk = _3ds_chunk(MATERIAL)
|
|
name = _3ds_chunk(MATNAME)
|
|
|
|
if material: name_str = material.name
|
|
else: name_str = 'None'
|
|
if image: name_str += image.name
|
|
|
|
name.add_variable("name", _3ds_string(sane_name(name_str)))
|
|
material_chunk.add_subchunk(name)
|
|
|
|
if not material:
|
|
material_chunk.add_subchunk(make_material_subchunk(MATAMBIENT, (0,0,0) ))
|
|
material_chunk.add_subchunk(make_material_subchunk(MATDIFFUSE, (.8, .8, .8) ))
|
|
material_chunk.add_subchunk(make_material_subchunk(MATSPECULAR, (1,1,1) ))
|
|
|
|
else:
|
|
material_chunk.add_subchunk(make_material_subchunk(MATAMBIENT, [a*material.ambient for a in material.diffuse_color] ))
|
|
# material_chunk.add_subchunk(make_material_subchunk(MATAMBIENT, [a*material.amb for a in material.rgbCol] ))
|
|
material_chunk.add_subchunk(make_material_subchunk(MATDIFFUSE, material.diffuse_color))
|
|
# material_chunk.add_subchunk(make_material_subchunk(MATDIFFUSE, material.rgbCol))
|
|
material_chunk.add_subchunk(make_material_subchunk(MATSPECULAR, material.specular_color))
|
|
# material_chunk.add_subchunk(make_material_subchunk(MATSPECULAR, material.specCol))
|
|
|
|
images = get_material_images(material) # can be None
|
|
if image: images.append(image)
|
|
|
|
if images:
|
|
material_chunk.add_subchunk(make_material_texture_chunk(MATMAP, images))
|
|
|
|
return material_chunk
|
|
|
|
class tri_wrapper(object):
|
|
'''Class representing a triangle.
|
|
|
|
Used when converting faces to triangles'''
|
|
|
|
__slots__ = 'vertex_index', 'mat', 'image', 'faceuvs', 'offset'
|
|
def __init__(self, vindex=(0,0,0), mat=None, image=None, faceuvs=None):
|
|
self.vertex_index= vindex
|
|
self.mat= mat
|
|
self.image= image
|
|
self.faceuvs= faceuvs
|
|
self.offset= [0, 0, 0] # offset indicies
|
|
|
|
|
|
def extract_triangles(mesh):
|
|
'''Extract triangles from a mesh.
|
|
|
|
If the mesh contains quads, they will be split into triangles.'''
|
|
tri_list = []
|
|
do_uv = len(mesh.uv_textures)
|
|
# do_uv = mesh.faceUV
|
|
|
|
# if not do_uv:
|
|
# face_uv = None
|
|
|
|
img = None
|
|
for i, face in enumerate(mesh.faces):
|
|
f_v = face.verts
|
|
# f_v = face.v
|
|
|
|
uf = mesh.active_uv_texture.data[i] if do_uv else None
|
|
|
|
if do_uv:
|
|
f_uv = uf.uv
|
|
# f_uv = (uf.uv1, uf.uv2, uf.uv3, uf.uv4) if face.verts[3] else (uf.uv1, uf.uv2, uf.uv3)
|
|
# f_uv = face.uv
|
|
img = uf.image if uf else None
|
|
# img = face.image
|
|
if img: img = img.name
|
|
|
|
# if f_v[3] == 0:
|
|
if len(f_v)==3:
|
|
new_tri = tri_wrapper((f_v[0], f_v[1], f_v[2]), face.material_index, img)
|
|
# new_tri = tri_wrapper((f_v[0].index, f_v[1].index, f_v[2].index), face.mat, img)
|
|
if (do_uv): new_tri.faceuvs= uv_key(f_uv[0]), uv_key(f_uv[1]), uv_key(f_uv[2])
|
|
tri_list.append(new_tri)
|
|
|
|
else: #it's a quad
|
|
new_tri = tri_wrapper((f_v[0], f_v[1], f_v[2]), face.material_index, img)
|
|
# new_tri = tri_wrapper((f_v[0].index, f_v[1].index, f_v[2].index), face.mat, img)
|
|
new_tri_2 = tri_wrapper((f_v[0], f_v[2], f_v[3]), face.material_index, img)
|
|
# new_tri_2 = tri_wrapper((f_v[0].index, f_v[2].index, f_v[3].index), face.mat, img)
|
|
|
|
if (do_uv):
|
|
new_tri.faceuvs= uv_key(f_uv[0]), uv_key(f_uv[1]), uv_key(f_uv[2])
|
|
new_tri_2.faceuvs= uv_key(f_uv[0]), uv_key(f_uv[2]), uv_key(f_uv[3])
|
|
|
|
tri_list.append( new_tri )
|
|
tri_list.append( new_tri_2 )
|
|
|
|
return tri_list
|
|
|
|
|
|
def remove_face_uv(verts, tri_list):
|
|
'''Remove face UV coordinates from a list of triangles.
|
|
|
|
Since 3ds files only support one pair of uv coordinates for each vertex, face uv coordinates
|
|
need to be converted to vertex uv coordinates. That means that vertices need to be duplicated when
|
|
there are multiple uv coordinates per vertex.'''
|
|
|
|
# initialize a list of UniqueLists, one per vertex:
|
|
#uv_list = [UniqueList() for i in xrange(len(verts))]
|
|
unique_uvs= [{} for i in range(len(verts))]
|
|
|
|
# for each face uv coordinate, add it to the UniqueList of the vertex
|
|
for tri in tri_list:
|
|
for i in range(3):
|
|
# store the index into the UniqueList for future reference:
|
|
# offset.append(uv_list[tri.vertex_index[i]].add(_3ds_point_uv(tri.faceuvs[i])))
|
|
|
|
context_uv_vert= unique_uvs[tri.vertex_index[i]]
|
|
uvkey= tri.faceuvs[i]
|
|
|
|
offset_index__uv_3ds = context_uv_vert.get(uvkey)
|
|
|
|
if not offset_index__uv_3ds:
|
|
offset_index__uv_3ds = context_uv_vert[uvkey] = len(context_uv_vert), _3ds_point_uv(uvkey)
|
|
|
|
tri.offset[i] = offset_index__uv_3ds[0]
|
|
|
|
|
|
|
|
# At this point, each vertex has a UniqueList containing every uv coordinate that is associated with it
|
|
# only once.
|
|
|
|
# Now we need to duplicate every vertex as many times as it has uv coordinates and make sure the
|
|
# faces refer to the new face indices:
|
|
vert_index = 0
|
|
vert_array = _3ds_array()
|
|
uv_array = _3ds_array()
|
|
index_list = []
|
|
for i,vert in enumerate(verts):
|
|
index_list.append(vert_index)
|
|
|
|
pt = _3ds_point_3d(vert.co) # reuse, should be ok
|
|
uvmap = [None] * len(unique_uvs[i])
|
|
for ii, uv_3ds in unique_uvs[i].values():
|
|
# add a vertex duplicate to the vertex_array for every uv associated with this vertex:
|
|
vert_array.add(pt)
|
|
# add the uv coordinate to the uv array:
|
|
# This for loop does not give uv's ordered by ii, so we create a new map
|
|
# and add the uv's later
|
|
# uv_array.add(uv_3ds)
|
|
uvmap[ii] = uv_3ds
|
|
|
|
# Add the uv's in the correct order
|
|
for uv_3ds in uvmap:
|
|
# add the uv coordinate to the uv array:
|
|
uv_array.add(uv_3ds)
|
|
|
|
vert_index += len(unique_uvs[i])
|
|
|
|
# Make sure the triangle vertex indices now refer to the new vertex list:
|
|
for tri in tri_list:
|
|
for i in range(3):
|
|
tri.offset[i]+=index_list[tri.vertex_index[i]]
|
|
tri.vertex_index= tri.offset
|
|
|
|
return vert_array, uv_array, tri_list
|
|
|
|
def make_faces_chunk(tri_list, mesh, materialDict):
|
|
'''Make a chunk for the faces.
|
|
|
|
Also adds subchunks assigning materials to all faces.'''
|
|
|
|
materials = mesh.materials
|
|
if not materials:
|
|
mat = None
|
|
|
|
face_chunk = _3ds_chunk(OBJECT_FACES)
|
|
face_list = _3ds_array()
|
|
|
|
|
|
if len(mesh.uv_textures):
|
|
# if mesh.faceUV:
|
|
# Gather materials used in this mesh - mat/image pairs
|
|
unique_mats = {}
|
|
for i,tri in enumerate(tri_list):
|
|
|
|
face_list.add(_3ds_face(tri.vertex_index))
|
|
|
|
if materials:
|
|
mat = materials[tri.mat]
|
|
if mat: mat = mat.name
|
|
|
|
img = tri.image
|
|
|
|
try:
|
|
context_mat_face_array = unique_mats[mat, img][1]
|
|
except:
|
|
|
|
if mat: name_str = mat
|
|
else: name_str = 'None'
|
|
if img: name_str += img
|
|
|
|
context_mat_face_array = _3ds_array()
|
|
unique_mats[mat, img] = _3ds_string(sane_name(name_str)), context_mat_face_array
|
|
|
|
|
|
context_mat_face_array.add(_3ds_short(i))
|
|
# obj_material_faces[tri.mat].add(_3ds_short(i))
|
|
|
|
face_chunk.add_variable("faces", face_list)
|
|
for mat_name, mat_faces in unique_mats.values():
|
|
obj_material_chunk=_3ds_chunk(OBJECT_MATERIAL)
|
|
obj_material_chunk.add_variable("name", mat_name)
|
|
obj_material_chunk.add_variable("face_list", mat_faces)
|
|
face_chunk.add_subchunk(obj_material_chunk)
|
|
|
|
else:
|
|
|
|
obj_material_faces=[]
|
|
obj_material_names=[]
|
|
for m in materials:
|
|
if m:
|
|
obj_material_names.append(_3ds_string(sane_name(m.name)))
|
|
obj_material_faces.append(_3ds_array())
|
|
n_materials = len(obj_material_names)
|
|
|
|
for i,tri in enumerate(tri_list):
|
|
face_list.add(_3ds_face(tri.vertex_index))
|
|
if (tri.mat < n_materials):
|
|
obj_material_faces[tri.mat].add(_3ds_short(i))
|
|
|
|
face_chunk.add_variable("faces", face_list)
|
|
for i in range(n_materials):
|
|
obj_material_chunk=_3ds_chunk(OBJECT_MATERIAL)
|
|
obj_material_chunk.add_variable("name", obj_material_names[i])
|
|
obj_material_chunk.add_variable("face_list", obj_material_faces[i])
|
|
face_chunk.add_subchunk(obj_material_chunk)
|
|
|
|
return face_chunk
|
|
|
|
def make_vert_chunk(vert_array):
|
|
'''Make a vertex chunk out of an array of vertices.'''
|
|
vert_chunk = _3ds_chunk(OBJECT_VERTICES)
|
|
vert_chunk.add_variable("vertices",vert_array)
|
|
return vert_chunk
|
|
|
|
def make_uv_chunk(uv_array):
|
|
'''Make a UV chunk out of an array of UVs.'''
|
|
uv_chunk = _3ds_chunk(OBJECT_UV)
|
|
uv_chunk.add_variable("uv coords", uv_array)
|
|
return uv_chunk
|
|
|
|
def make_mesh_chunk(mesh, materialDict):
|
|
'''Make a chunk out of a Blender mesh.'''
|
|
|
|
# Extract the triangles from the mesh:
|
|
tri_list = extract_triangles(mesh)
|
|
|
|
if len(mesh.uv_textures):
|
|
# if mesh.faceUV:
|
|
# Remove the face UVs and convert it to vertex UV:
|
|
vert_array, uv_array, tri_list = remove_face_uv(mesh.verts, tri_list)
|
|
else:
|
|
# Add the vertices to the vertex array:
|
|
vert_array = _3ds_array()
|
|
for vert in mesh.verts:
|
|
vert_array.add(_3ds_point_3d(vert.co))
|
|
# If the mesh has vertex UVs, create an array of UVs:
|
|
if len(mesh.sticky):
|
|
# if mesh.vertexUV:
|
|
uv_array = _3ds_array()
|
|
for uv in mesh.sticky:
|
|
# for vert in mesh.verts:
|
|
uv_array.add(_3ds_point_uv(uv.co))
|
|
# uv_array.add(_3ds_point_uv(vert.uvco))
|
|
else:
|
|
# no UV at all:
|
|
uv_array = None
|
|
|
|
# create the chunk:
|
|
mesh_chunk = _3ds_chunk(OBJECT_MESH)
|
|
|
|
# add vertex chunk:
|
|
mesh_chunk.add_subchunk(make_vert_chunk(vert_array))
|
|
# add faces chunk:
|
|
|
|
mesh_chunk.add_subchunk(make_faces_chunk(tri_list, mesh, materialDict))
|
|
|
|
# if available, add uv chunk:
|
|
if uv_array:
|
|
mesh_chunk.add_subchunk(make_uv_chunk(uv_array))
|
|
|
|
return mesh_chunk
|
|
|
|
""" # COMMENTED OUT FOR 2.42 RELEASE!! CRASHES 3DS MAX
|
|
def make_kfdata(start=0, stop=0, curtime=0):
|
|
'''Make the basic keyframe data chunk'''
|
|
kfdata = _3ds_chunk(KFDATA)
|
|
|
|
kfhdr = _3ds_chunk(KFDATA_KFHDR)
|
|
kfhdr.add_variable("revision", _3ds_short(0))
|
|
# Not really sure what filename is used for, but it seems it is usually used
|
|
# to identify the program that generated the .3ds:
|
|
kfhdr.add_variable("filename", _3ds_string("Blender"))
|
|
kfhdr.add_variable("animlen", _3ds_int(stop-start))
|
|
|
|
kfseg = _3ds_chunk(KFDATA_KFSEG)
|
|
kfseg.add_variable("start", _3ds_int(start))
|
|
kfseg.add_variable("stop", _3ds_int(stop))
|
|
|
|
kfcurtime = _3ds_chunk(KFDATA_KFCURTIME)
|
|
kfcurtime.add_variable("curtime", _3ds_int(curtime))
|
|
|
|
kfdata.add_subchunk(kfhdr)
|
|
kfdata.add_subchunk(kfseg)
|
|
kfdata.add_subchunk(kfcurtime)
|
|
return kfdata
|
|
"""
|
|
|
|
"""
|
|
def make_track_chunk(ID, obj):
|
|
'''Make a chunk for track data.
|
|
|
|
Depending on the ID, this will construct a position, rotation or scale track.'''
|
|
track_chunk = _3ds_chunk(ID)
|
|
track_chunk.add_variable("track_flags", _3ds_short())
|
|
track_chunk.add_variable("unknown", _3ds_int())
|
|
track_chunk.add_variable("unknown", _3ds_int())
|
|
track_chunk.add_variable("nkeys", _3ds_int(1))
|
|
# Next section should be repeated for every keyframe, but for now, animation is not actually supported.
|
|
track_chunk.add_variable("tcb_frame", _3ds_int(0))
|
|
track_chunk.add_variable("tcb_flags", _3ds_short())
|
|
if obj.type=='Empty':
|
|
if ID==POS_TRACK_TAG:
|
|
# position vector:
|
|
track_chunk.add_variable("position", _3ds_point_3d(obj.getLocation()))
|
|
elif ID==ROT_TRACK_TAG:
|
|
# rotation (quaternion, angle first, followed by axis):
|
|
q = obj.getEuler().to_quat()
|
|
track_chunk.add_variable("rotation", _3ds_point_4d((q.angle, q.axis[0], q.axis[1], q.axis[2])))
|
|
elif ID==SCL_TRACK_TAG:
|
|
# scale vector:
|
|
track_chunk.add_variable("scale", _3ds_point_3d(obj.getSize()))
|
|
else:
|
|
# meshes have their transformations applied before
|
|
# exporting, so write identity transforms here:
|
|
if ID==POS_TRACK_TAG:
|
|
# position vector:
|
|
track_chunk.add_variable("position", _3ds_point_3d((0.0,0.0,0.0)))
|
|
elif ID==ROT_TRACK_TAG:
|
|
# rotation (quaternion, angle first, followed by axis):
|
|
track_chunk.add_variable("rotation", _3ds_point_4d((0.0, 1.0, 0.0, 0.0)))
|
|
elif ID==SCL_TRACK_TAG:
|
|
# scale vector:
|
|
track_chunk.add_variable("scale", _3ds_point_3d((1.0, 1.0, 1.0)))
|
|
|
|
return track_chunk
|
|
"""
|
|
|
|
"""
|
|
def make_kf_obj_node(obj, name_to_id):
|
|
'''Make a node chunk for a Blender object.
|
|
|
|
Takes the Blender object as a parameter. Object id's are taken from the dictionary name_to_id.
|
|
Blender Empty objects are converted to dummy nodes.'''
|
|
|
|
name = obj.name
|
|
# main object node chunk:
|
|
kf_obj_node = _3ds_chunk(KFDATA_OBJECT_NODE_TAG)
|
|
# chunk for the object id:
|
|
obj_id_chunk = _3ds_chunk(OBJECT_NODE_ID)
|
|
# object id is from the name_to_id dictionary:
|
|
obj_id_chunk.add_variable("node_id", _3ds_short(name_to_id[name]))
|
|
|
|
# object node header:
|
|
obj_node_header_chunk = _3ds_chunk(OBJECT_NODE_HDR)
|
|
# object name:
|
|
if obj.type == 'Empty':
|
|
# Empties are called "$$$DUMMY" and use the OBJECT_INSTANCE_NAME chunk
|
|
# for their name (see below):
|
|
obj_node_header_chunk.add_variable("name", _3ds_string("$$$DUMMY"))
|
|
else:
|
|
# Add the name:
|
|
obj_node_header_chunk.add_variable("name", _3ds_string(sane_name(name)))
|
|
# Add Flag variables (not sure what they do):
|
|
obj_node_header_chunk.add_variable("flags1", _3ds_short(0))
|
|
obj_node_header_chunk.add_variable("flags2", _3ds_short(0))
|
|
|
|
# Check parent-child relationships:
|
|
parent = obj.parent
|
|
if (parent == None) or (parent.name not in name_to_id):
|
|
# If no parent, or the parents name is not in the name_to_id dictionary,
|
|
# parent id becomes -1:
|
|
obj_node_header_chunk.add_variable("parent", _3ds_short(-1))
|
|
else:
|
|
# Get the parent's id from the name_to_id dictionary:
|
|
obj_node_header_chunk.add_variable("parent", _3ds_short(name_to_id[parent.name]))
|
|
|
|
# Add pivot chunk:
|
|
obj_pivot_chunk = _3ds_chunk(OBJECT_PIVOT)
|
|
obj_pivot_chunk.add_variable("pivot", _3ds_point_3d(obj.getLocation()))
|
|
kf_obj_node.add_subchunk(obj_pivot_chunk)
|
|
|
|
# add subchunks for object id and node header:
|
|
kf_obj_node.add_subchunk(obj_id_chunk)
|
|
kf_obj_node.add_subchunk(obj_node_header_chunk)
|
|
|
|
# Empty objects need to have an extra chunk for the instance name:
|
|
if obj.type == 'Empty':
|
|
obj_instance_name_chunk = _3ds_chunk(OBJECT_INSTANCE_NAME)
|
|
obj_instance_name_chunk.add_variable("name", _3ds_string(sane_name(name)))
|
|
kf_obj_node.add_subchunk(obj_instance_name_chunk)
|
|
|
|
# Add track chunks for position, rotation and scale:
|
|
kf_obj_node.add_subchunk(make_track_chunk(POS_TRACK_TAG, obj))
|
|
kf_obj_node.add_subchunk(make_track_chunk(ROT_TRACK_TAG, obj))
|
|
kf_obj_node.add_subchunk(make_track_chunk(SCL_TRACK_TAG, obj))
|
|
|
|
return kf_obj_node
|
|
"""
|
|
|
|
# import BPyMessages
|
|
def save_3ds(filename, context):
|
|
'''Save the Blender scene to a 3ds file.'''
|
|
# Time the export
|
|
|
|
if not filename.lower().endswith('.3ds'):
|
|
filename += '.3ds'
|
|
|
|
# XXX
|
|
# if not BPyMessages.Warning_SaveOver(filename):
|
|
# return
|
|
|
|
# XXX
|
|
time1 = time.clock()
|
|
# time1= Blender.sys.time()
|
|
# Blender.Window.WaitCursor(1)
|
|
|
|
sce = context.scene
|
|
# sce= bpy.data.scenes.active
|
|
|
|
bpy.ops.object.mode_set(mode='OBJECT')
|
|
|
|
# Initialize the main chunk (primary):
|
|
primary = _3ds_chunk(PRIMARY)
|
|
# Add version chunk:
|
|
version_chunk = _3ds_chunk(VERSION)
|
|
version_chunk.add_variable("version", _3ds_int(3))
|
|
primary.add_subchunk(version_chunk)
|
|
|
|
# init main object info chunk:
|
|
object_info = _3ds_chunk(OBJECTINFO)
|
|
|
|
''' # COMMENTED OUT FOR 2.42 RELEASE!! CRASHES 3DS MAX
|
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# init main key frame data chunk:
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kfdata = make_kfdata()
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'''
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# Get all the supported objects selected in this scene:
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# ob_sel= list(sce.objects.context)
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# mesh_objects = [ (ob, me) for ob in ob_sel for me in (BPyMesh.getMeshFromObject(ob, None, True, False, sce),) if me ]
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# empty_objects = [ ob for ob in ob_sel if ob.type == 'Empty' ]
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# Make a list of all materials used in the selected meshes (use a dictionary,
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# each material is added once):
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materialDict = {}
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mesh_objects = []
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scene = context.scene
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for ob in [ob for ob in scene.objects if ob.is_visible(scene)]:
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# for ob in sce.objects.context:
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# get derived objects
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free, derived = create_derived_objects(scene, ob)
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if derived == None: continue
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for ob_derived, mat in derived:
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# for ob_derived, mat in getDerivedObjects(ob, False):
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if ob.type not in ('MESH', 'CURVE', 'SURFACE', 'TEXT', 'META'):
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continue
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data = ob_derived.create_mesh(scene, True, 'PREVIEW')
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# data = getMeshFromObject(ob_derived, None, True, False, sce)
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if data:
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data.transform(mat)
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# data.transform(mat, recalc_normals=False)
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mesh_objects.append((ob_derived, data))
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mat_ls = data.materials
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mat_ls_len = len(mat_ls)
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# get material/image tuples.
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if len(data.uv_textures):
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# if data.faceUV:
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if not mat_ls:
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mat = mat_name = None
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for f, uf in zip(data.faces, data.active_uv_texture.data):
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if mat_ls:
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mat_index = f.material_index
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# mat_index = f.mat
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if mat_index >= mat_ls_len:
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mat_index = f.mat = 0
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mat = mat_ls[mat_index]
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if mat: mat_name = mat.name
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else: mat_name = None
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# else there alredy set to none
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img = uf.image
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# img = f.image
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if img: img_name = img.name
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else: img_name = None
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materialDict.setdefault((mat_name, img_name), (mat, img) )
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else:
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for mat in mat_ls:
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if mat: # material may be None so check its not.
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materialDict.setdefault((mat.name, None), (mat, None) )
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# Why 0 Why!
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for f in data.faces:
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if f.material_index >= mat_ls_len:
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# if f.mat >= mat_ls_len:
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f.material_index = 0
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# f.mat = 0
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if free:
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free_derived_objects(ob)
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# Make material chunks for all materials used in the meshes:
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for mat_and_image in materialDict.values():
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object_info.add_subchunk(make_material_chunk(mat_and_image[0], mat_and_image[1]))
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# Give all objects a unique ID and build a dictionary from object name to object id:
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"""
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name_to_id = {}
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for ob, data in mesh_objects:
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name_to_id[ob.name]= len(name_to_id)
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#for ob in empty_objects:
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# name_to_id[ob.name]= len(name_to_id)
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"""
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# Create object chunks for all meshes:
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i = 0
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for ob, blender_mesh in mesh_objects:
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# create a new object chunk
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object_chunk = _3ds_chunk(OBJECT)
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# set the object name
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object_chunk.add_variable("name", _3ds_string(sane_name(ob.name)))
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# make a mesh chunk out of the mesh:
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object_chunk.add_subchunk(make_mesh_chunk(blender_mesh, materialDict))
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object_info.add_subchunk(object_chunk)
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''' # COMMENTED OUT FOR 2.42 RELEASE!! CRASHES 3DS MAX
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# make a kf object node for the object:
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kfdata.add_subchunk(make_kf_obj_node(ob, name_to_id))
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'''
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if not blender_mesh.users:
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bpy.data.meshes.remove(blender_mesh)
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# blender_mesh.verts = None
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i+=i
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# Create chunks for all empties:
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''' # COMMENTED OUT FOR 2.42 RELEASE!! CRASHES 3DS MAX
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for ob in empty_objects:
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# Empties only require a kf object node:
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kfdata.add_subchunk(make_kf_obj_node(ob, name_to_id))
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pass
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'''
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# Add main object info chunk to primary chunk:
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primary.add_subchunk(object_info)
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''' # COMMENTED OUT FOR 2.42 RELEASE!! CRASHES 3DS MAX
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# Add main keyframe data chunk to primary chunk:
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primary.add_subchunk(kfdata)
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'''
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# At this point, the chunk hierarchy is completely built.
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# Check the size:
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primary.get_size()
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# Open the file for writing:
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file = open( filename, 'wb' )
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# Recursively write the chunks to file:
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primary.write(file)
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# Close the file:
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file.close()
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# Debugging only: report the exporting time:
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# Blender.Window.WaitCursor(0)
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print("3ds export time: %.2f" % (time.clock() - time1))
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# print("3ds export time: %.2f" % (Blender.sys.time() - time1))
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# Debugging only: dump the chunk hierarchy:
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#primary.dump()
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# if __name__=='__main__':
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# if struct:
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# Blender.Window.FileSelector(save_3ds, "Export 3DS", Blender.sys.makename(ext='.3ds'))
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# else:
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# Blender.Draw.PupMenu("Error%t|This script requires a full python installation")
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# # save_3ds('/test_b.3ds')
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from bpy.props import *
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class Export3DS(bpy.types.Operator):
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'''Export to 3DS file format (.3ds)'''
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bl_idname = "export.autodesk_3ds"
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bl_label = 'Export 3DS'
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# List of operator properties, the attributes will be assigned
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# to the class instance from the operator settings before calling.
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filepath = StringProperty(name="File Path", description="Filepath used for exporting the 3DS file", maxlen= 1024, default= "")
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check_existing = BoolProperty(name="Check Existing", description="Check and warn on overwriting existing files", default=True, options={'HIDDEN'})
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def execute(self, context):
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save_3ds(self.properties.filepath, context)
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return {'FINISHED'}
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def invoke(self, context, event):
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wm = context.manager
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wm.add_fileselect(self)
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return {'RUNNING_MODAL'}
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def poll(self, context): # Poll isnt working yet
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return context.active_object != None
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# Add to a menu
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def menu_func(self, context):
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default_path = bpy.data.filepath.replace(".blend", ".3ds")
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self.layout.operator(Export3DS.bl_idname, text="3D Studio (.3ds)").filepath = default_path
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def register():
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bpy.types.register(Export3DS)
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bpy.types.INFO_MT_file_export.append(menu_func)
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def unregister():
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bpy.types.unregister(Export3DS)
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bpy.types.INFO_MT_file_export.remove(menu_func)
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if __name__ == "__main__":
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register()
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