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__author__ = "Bill L.Nieuwendorp"
__bpydoc__ = """\
This script Exports Lightwaves MotionDesigner format.
The .mdd format has become quite a popular Pipeline format<br>
for moving animations from package to package.
Be sure not to use modifiers that change the number or order of verts in the mesh
"""
#Please send any fixes,updates,bugs to Slow67_at_Gmail.com or cbarton_at_metavr.com
#Bill Niewuendorp
# ***** BEGIN GPL LICENSE BLOCK *****
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software Foundation,
# Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
#
# ***** END GPL LICENCE BLOCK *****
import bpy
import Mathutils
import math
import os
#import Blender
#from Blender import *
#import BPyMessages
try:
from struct import pack
except:
pack = None
def zero_file(filepath):
'''
If a file fails, this replaces it with 1 char, better not remove it?
'''
file = open(filepath, 'w')
file.write('\n') # apparently macosx needs some data in a blank file?
file.close()
def check_vertcount(mesh,vertcount):
'''
check and make sure the vertcount is consistent throughout the frame range
'''
if len(mesh.verts) != vertcount:
raise Exception('Error, number of verts has changed during animation, cannot export')
f.close()
zero_file(filepath)
return
def write(filename, sce, ob, PREF_STARTFRAME, PREF_ENDFRAME, PREF_FPS):
if not pack:
raise Exception('Error, this script requires the "pack" module')
if ob.type != 'MESH':
raise Exception('Error, active object is not a mesh')
"""
Window.EditMode(0)
Blender.Window.WaitCursor(1)
mesh_orig = Mesh.New()
mesh_orig.getFromObject(ob.name)
"""
orig_frame = sce.current_frame
sce.set_frame(PREF_STARTFRAME)
me = ob.create_mesh(True, 'PREVIEW')
#Flip y and z
mat_flip= Mathutils.Matrix(\
[1.0, 0.0, 0.0, 0.0],\
[0.0, 0.0, 1.0, 0.0],\
[0.0, 1.0, 0.0, 0.0],\
[0.0, 0.0, 0.0, 1.0],\
)
numverts = len(me.verts)
numframes = PREF_ENDFRAME-PREF_STARTFRAME+1
PREF_FPS= float(PREF_FPS)
f = open(filename, 'wb') #no Errors yet:Safe to create file
# Write the header
f.write(pack(">2i", numframes, numverts))
# Write the frame times (should we use the time IPO??)
f.write( pack(">%df" % (numframes), *[frame/PREF_FPS for frame in range(numframes)]) ) # seconds
#rest frame needed to keep frames in sync
"""
Blender.Set('curframe', PREF_STARTFRAME)
me_tmp.getFromObject(ob.name)
"""
check_vertcount(me,numverts)
me.transform(mat_flip * ob.matrix)
f.write(pack(">%df" % (numverts*3), *[axis for v in me.verts for axis in v.co]))
for frame in range(PREF_STARTFRAME,PREF_ENDFRAME+1):#in order to start at desired frame
"""
Blender.Set('curframe', frame)
me_tmp.getFromObject(ob.name)
"""
sce.set_frame(frame)
me = ob.create_mesh(True, 'PREVIEW')
check_vertcount(me,numverts)
me.transform(mat_flip * ob.matrix)
# Write the vertex data
f.write(pack(">%df" % (numverts*3), *[axis for v in me.verts for axis in v.co]))
"""
me_tmp.verts= None
"""
f.close()
print ('MDD Exported: %s frames:%d\n'% (filename, numframes-1))
"""
Blender.Window.WaitCursor(0)
Blender.Set('curframe', orig_frame)
"""
sce.set_frame(orig_frame)
class EXPORT_OT_mdd(bpy.types.Operator):
'''Animated mesh to MDD vertex keyframe file.'''
__idname__ = "export.mdd"
__label__ = "Export MDD"
# get first scene to get min and max properties for frames, fps
sce = bpy.data.scenes[bpy.data.scenes.keys()[0]]
minframe = sce.rna_type.properties["current_frame"].soft_min
maxframe = sce.rna_type.properties["current_frame"].soft_max
minfps = sce.render_data.rna_type.properties["fps"].soft_min
maxfps = sce.render_data.rna_type.properties["fps"].soft_max
# List of operator properties, the attributes will be assigned
# to the class instance from the operator settings before calling.
__props__ = [
bpy.props.StringProperty(attr="path", name="File Path", description="File path used for exporting the MDD file", maxlen= 1024, default= "tmp.mdd"),
bpy.props.IntProperty(attr="fps", name="Frames Per Second", description="Number of frames/second", min=minfps, max=maxfps, default= 25),
bpy.props.IntProperty(attr="start_frame", name="Start Frame", description="Start frame for baking", min=minframe,max=maxframe,default=1),
bpy.props.IntProperty(attr="end_frame", name="End Frame", description="End frame for baking", min=minframe, max=maxframe, default= 250),
]
def poll(self, context):
return context.active_object != None
def execute(self, context):
if not self.path:
raise Exception("filename not set")
write(self.path, context.scene, context.active_object,
self.start_frame, self.end_frame, self.fps )
return ('FINISHED',)
def invoke(self, context, event):
wm = context.manager
wm.add_fileselect(self.__operator__)
return ('RUNNING_MODAL',)
bpy.ops.add(EXPORT_OT_mdd)
# Add to a menu
import dynamic_menu
menu_func = lambda self, context: self.layout.itemO("export.mdd", text="Vertex Keyframe Animation (.mdd)...")
menu_item = dynamic_menu.add(bpy.types.INFO_MT_file_export, menu_func)
if __name__=='__main__':
#if not pack:
# Draw.PupMenu('Error%t|This script requires a full python install')
#Blender.Window.FileSelector(mdd_export_ui, 'EXPORT MDD', sys.makename(ext='.mdd'))
bpy.ops.EXPORT_OT_mdd(path="/tmp/test.mdd")
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