blender/release/scripts/io/export_mdd.py
Campbell Barton e61c90e416 operators were copying the properties from the rna operator into the class instance.
however this meant the invoke function could not modify properties for exec to use (unless it called exec directly after)
since the popup for eg would re-instance the python class each time.

now use the operator properties directly through rna without an automatic copy.

now an operator attribute is accessed like this...
self.path --> self.properties.path
2009-11-19 17:12:08 +00:00

200 lines
6.5 KiB
Python

# ##### 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 LICENSE BLOCK #####
__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):
"""
Blender.Window.WaitCursor(1)
mesh_orig = Mesh.New()
mesh_orig.getFromObject(ob.name)
"""
bpy.ops.object.mode_set(mode='OBJECT')
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)
from bpy.props import *
class ExportMDD(bpy.types.Operator):
'''Animated mesh to MDD vertex keyframe file.'''
bl_idname = "export.mdd"
bl_label = "Export MDD"
# get first scene to get min and max properties for frames, fps
minframe = 1
maxframe = 300000
minfps = 1
maxfps = 120
# List of operator properties, the attributes will be assigned
# to the class instance from the operator settings before calling.
path = StringProperty(name="File Path", description="File path used for exporting the MDD file", maxlen= 1024, default= "tmp.mdd")
fps = IntProperty(name="Frames Per Second", description="Number of frames/second", min=minfps, max=maxfps, default= 25)
start_frame = IntProperty(name="Start Frame", description="Start frame for baking", min=minframe,max=maxframe,default=1)
end_frame = IntProperty(name="End Frame", description="End frame for baking", min=minframe, max=maxframe, default= 250)
def poll(self, context):
ob = context.active_object
return (ob and ob.type=='MESH')
def execute(self, context):
if not self.properties.path:
raise Exception("filename not set")
write(self.properties.path, context.scene, context.active_object,
self.properties.start_frame, self.properties.end_frame, self.properties.fps )
return ('FINISHED',)
def invoke(self, context, event):
wm = context.manager
wm.add_fileselect(self)
return ('RUNNING_MODAL',)
bpy.ops.add(ExportMDD)
# Add to a menu
import dynamic_menu
def menu_func(self, context):
default_path = bpy.data.filename.replace(".blend", ".mdd")
self.layout.item_stringO(ExportMDD.bl_idname, "path", default_path, text="Vertex Keyframe Animation (.mdd)...")
menu_item = dynamic_menu.add(bpy.types.INFO_MT_file_export, menu_func)
if __name__=='__main__':
bpy.ops.export.mdd(path="/tmp/test.mdd")