blender/release/scripts/io/export_mdd.py

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# ##### 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.
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#
# 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.
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#
# You should have received a copy of the GNU General Public License
# 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.
#
# ##### END GPL LICENSE BLOCK #####
# <pep8 compliant>
__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,
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# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
#
# ***** END GPL LICENCE BLOCK *****
import bpy
import Mathutils
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from struct import pack
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()
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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
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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
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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
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PREF_FPS = float(PREF_FPS)
f = open(filename, 'wb') #no Errors yet:Safe to create file
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# Write the header
f.write(pack(">2i", numframes, numverts))
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# Write the frame times (should we use the time IPO??)
f.write(pack(">%df" % (numframes), *[frame / PREF_FPS for frame in range(numframes)])) # seconds
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#rest frame needed to keep frames in sync
"""
Blender.Set('curframe', PREF_STARTFRAME)
me_tmp.getFromObject(ob.name)
"""
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check_vertcount(me, numverts)
me.transform(mat_flip * ob.matrix)
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f.write(pack(">%df" % (numverts * 3), *[axis for v in me.verts for axis in v.co]))
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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')
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check_vertcount(me, numverts)
me.transform(mat_flip * ob.matrix)
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# Write the vertex data
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f.write(pack(">%df" % (numverts * 3), *[axis for v in me.verts for axis in v.co]))
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"""
me_tmp.verts= None
"""
f.close()
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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 *
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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)
check_existing = BoolProperty(name="Check Existing", description="Check and warn on overwriting existing files", default=True, options={'HIDDEN'})
fps = IntProperty(name="Frames Per Second", description="Number of frames/second", min=minfps, max=maxfps, default=25)
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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
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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,
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self.properties.start_frame, self.properties.end_frame, self.properties.fps)
return {'FINISHED'}
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def invoke(self, context, event):
wm = context.manager
wm.add_fileselect(self)
return {'RUNNING_MODAL'}
def menu_func(self, context):
default_path = bpy.data.filename.replace(".blend", ".mdd")
self.layout.operator(ExportMDD.bl_idname, text="Lightwave Point Cache (.mdd)").path = default_path
def register():
bpy.types.register(ExportMDD)
bpy.types.INFO_MT_file_export.append(menu_func)
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def unregister():
bpy.types.unregister(ExportMDD)
bpy.types.INFO_MT_file_export.remove(menu_func)
if __name__ == "__main__":
register()