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|
#!BPY
"""
Name: 'Save Mesh as MDD'
Blender: 242
Group: 'Export'
Tooltip: 'Animated mesh to MDD vertex keyframe file.'
"""
__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
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') # aparently macosx needs some data in a blank file?
file.close()
def mdd_export(filepath, ob, PREF_STARTFRAME, PREF_ENDFRAME, PREF_FPS):
Window.EditMode(0)
Blender.Window.WaitCursor(1)
mesh_orig = ob.getData(mesh=1)
#Flip y and z
'''
mat = Mathutils.Matrix()
mat[2][2] = -1
rotmat = Mathutils.RotationMatrix(90, 4, 'x')
mat_flip = mat*rotmat
'''
# Above results in this matrix
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],\
)
me_tmp = Mesh.New() # container mesh
numverts = len(mesh_orig.verts)
numframes = PREF_ENDFRAME-PREF_STARTFRAME+1
PREF_FPS= float(PREF_FPS)
f = open(filepath, 'wb') #no Errors yet:Safe to create file
# Write the header
f.write(pack(">2i", numframes-1, numverts))
# Write the frame times (should we use the time IPO??)
f.write( pack(">%df" % (numframes-1), *[frame/PREF_FPS for frame in xrange(numframes-1)]) ) # seconds
Blender.Set('curframe', PREF_STARTFRAME)
for frame in xrange(PREF_STARTFRAME,PREF_ENDFRAME+1):#in order to start at desired frame
Blender.Set('curframe', frame)
# Blender.Window.RedrawAll() # not needed
me_tmp.getFromObject(ob.name)
if len(me_tmp.verts) != numverts:
Blender.Draw.PupMenu('Error%t|Number of verts has changed during animation|cannot export')
Blender.Window.WaitCursor(0)
f.close() # should we zero?
zero_file(filepath)
return
me_tmp.transform(ob.matrixWorld * mat_flip)
# Write the vertex data
f.write(pack(">%df" % (numverts*3), *[axis for v in me_tmp.verts for axis in v.co]))
me_tmp.verts= None
f.close()
print'MDD Exported: %s frames:%d\n'% (filepath, numframes-1)
Blender.Window.WaitCursor(0)
def mdd_export_ui(filepath):
# Dont overwrite
if not BPyMessages.Warning_SaveOver(filepath):
return
scn= Scene.GetCurrent()
ob_act= scn.objects.active
if not ob_act or ob_act.type != 'Mesh':
BPyMessages.Error_NoMeshActive()
ctx = scn.getRenderingContext()
orig_frame = Blender.Get('curframe')
PREF_STARTFRAME= Blender.Draw.Create(int(ctx.startFrame()))
PREF_ENDFRAME= Blender.Draw.Create(int(ctx.endFrame()))
PREF_FPS= Blender.Draw.Create(ctx.fps)
block = [\
("Start Frame: ", PREF_STARTFRAME, 1, 30000, "Start Bake from what frame?: Default 1"),\
("End Frame: ", PREF_ENDFRAME, 1, 30000, "End Bake on what Frame?"),\
("FPS: ", PREF_FPS, 1, 100, "Frames per second")\
]
if not Blender.Draw.PupBlock("Export MDD", block):
return
PREF_STARTFRAME, PREF_ENDFRAME=\
min(PREF_STARTFRAME.val, PREF_ENDFRAME.val),\
max(PREF_STARTFRAME.val, PREF_ENDFRAME.val)
print (filepath, ob_act, PREF_STARTFRAME, PREF_ENDFRAME, PREF_FPS.val)
mdd_export(filepath, ob_act, PREF_STARTFRAME, PREF_ENDFRAME, PREF_FPS.val)
Blender.Set('curframe', orig_frame)
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'))
|
