forked from bartvdbraak/blender
136 lines
3.7 KiB
Python
136 lines
3.7 KiB
Python
#!BPY
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"""
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Name: 'Save Mesh as MDD'
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Blender: 242
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Group: 'Export'
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Tooltip: 'Animated mesh to MDD vertex keyframe file.'
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"""
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__author__ = "Bill L.Nieuwendorp"
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__bpydoc__ = """\
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This script Exports Lightwaves MotionDesigner format.
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The .mdd format has become quite a popular Pipeline format<br>
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for moving animations from package to package.
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Be sure not to use modifiers that change the number or order of verts in the mesh
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"""
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#Please send any fixes,updates,bugs to Slow67_at_Gmail.com or cbarton_at_metavr.com
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#Bill Niewuendorp
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import Blender
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from Blender import *
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import BPyMessages
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try:
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from struct import pack
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except:
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pack = None
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def zero_file(filepath):
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'''
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If a file fails, this replaces it with 1 char, better not remove it?
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'''
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file = open(filepath, 'w')
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file.write('\n') # aparently macosx needs some data in a blank file?
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file.close()
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def mdd_export(filepath, ob, PREF_STARTFRAME, PREF_ENDFRAME, PREF_FPS):
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Window.EditMode(0)
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Blender.Window.WaitCursor(1)
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mesh_orig = ob.getData(mesh=1)
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#Flip y and z
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'''
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mat = Mathutils.Matrix()
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mat[2][2] = -1
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rotmat = Mathutils.RotationMatrix(90, 4, 'x')
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mat_flip = mat*rotmat
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'''
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# Above results in this matrix
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mat_flip= Mathutils.Matrix(\
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[1.0, 0.0, 0.0, 0.0],\
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[0.0, 0.0, 1.0, 0.0],\
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[0.0, 1.0, 0.0, 0.0],\
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[0.0, 0.0, 0.0, 1.0],\
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)
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me_tmp = Mesh.New() # container mesh
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numverts = len(mesh_orig.verts)
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numframes = PREF_ENDFRAME-PREF_STARTFRAME+1
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PREF_FPS= float(PREF_FPS)
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f = open(filepath, 'wb') #no Errors yet:Safe to create file
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# Write the header
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f.write(pack(">2i", numframes-1, numverts))
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# Write the frame times (should we use the time IPO??)
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f.write( pack(">%df" % (numframes-1), *[frame/PREF_FPS for frame in xrange(numframes-1)]) ) # seconds
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Blender.Set('curframe', PREF_STARTFRAME)
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for frame in xrange(PREF_STARTFRAME,PREF_ENDFRAME+1):#in order to start at desired frame
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Blender.Set('curframe', frame)
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# Blender.Window.RedrawAll() # not needed
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me_tmp.getFromObject(ob.name)
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if len(me_tmp.verts) != numverts:
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Blender.Draw.PupMenu('Error%t|Number of verts has changed during animation|cannot export')
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Blender.Window.WaitCursor(0)
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f.close() # should we zero?
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zero_file(filepath)
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return
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me_tmp.transform(ob.matrixWorld * mat_flip)
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# Write the vertex data
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f.write(pack(">%df" % (numverts*3), *[axis for v in me_tmp.verts for axis in v.co]))
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me_tmp.verts= None
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f.close()
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print'MDD Exported: %s frames:%d\n'% (filepath, numframes-1)
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Blender.Window.WaitCursor(0)
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def mdd_export_ui(filepath):
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# Dont overwrite
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if not BPyMessages.Warning_SaveOver(filepath):
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return
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scn= Scene.GetCurrent()
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ob_act= scn.objects.active
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if not ob_act or ob_act.type != 'Mesh':
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BPyMessages.Error_NoMeshActive()
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ctx = scn.getRenderingContext()
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orig_frame = Blender.Get('curframe')
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PREF_STARTFRAME= Blender.Draw.Create(int(ctx.startFrame()))
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PREF_ENDFRAME= Blender.Draw.Create(int(ctx.endFrame()))
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PREF_FPS= Blender.Draw.Create(ctx.fps)
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block = [\
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("Start Frame: ", PREF_STARTFRAME, 1, 30000, "Start Bake from what frame?: Default 1"),\
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("End Frame: ", PREF_ENDFRAME, 1, 30000, "End Bake on what Frame?"),\
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("FPS: ", PREF_FPS, 1, 100, "Frames per second")\
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]
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if not Blender.Draw.PupBlock("Export MDD", block):
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return
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PREF_STARTFRAME, PREF_ENDFRAME=\
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min(PREF_STARTFRAME.val, PREF_ENDFRAME.val),\
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max(PREF_STARTFRAME.val, PREF_ENDFRAME.val)
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print (filepath, ob_act, PREF_STARTFRAME, PREF_ENDFRAME, PREF_FPS.val)
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mdd_export(filepath, ob_act, PREF_STARTFRAME, PREF_ENDFRAME, PREF_FPS.val)
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Blender.Set('curframe', orig_frame)
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if __name__=='__main__':
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if not pack:
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Draw.PupMenu('Error%t|This script requires a full python install')
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Blender.Window.FileSelector(mdd_export_ui, 'EXPORT MDD', sys.makename(ext='.mdd'))
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