[#21324] mdd import script ported to 2.5

2.4x port by Ivo Grigull (loolarge) 

from the tracker:

It should be working ok, but it does not have all options that the old script had. You can only specify the start frame
where to insert the animation, but not skip frames for have a different fps.

However, like the old script this will bloat the memory a bit, at some later point i would like to write a script that
only reads the current frame from the file when you move the timeline.

release/scripts/io/import_shape_mdd.py

@@ -0,0 +1,157 @@
+# ***** 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 *****
+
+# <pep8 compliant>
+
+# mdd importer by Bill L.Nieuwendorp
+# conversion to blender 2.5: Ivo Grigull (loolarge)
+#
+# Warning if the vertex order or vertex count differs from the
+# origonal model the mdd was Baked out from their will be Strange
+# behavior
+#
+# vertex animation to ShapeKeys with ipo  and gives the frame a value of 1.0 
+# A modifier to read mdd files would be Ideal but thats for another day :)
+#
+# Please send any fixes,updates,bugs to Slow67_at_Gmail.com
+# Bill Niewuendorp
+
+import bpy
+from struct import unpack
+
+
+def mdd_import(filepath, ob, scene, PREF_START_FRAME=0, PREF_JUMP=1):
+    
+    print('\n\nimporting mdd "%s"' % filepath)
+    
+    bpy.ops.object.mode_set(mode='OBJECT')
+
+    file = open(filepath, 'rb')
+    frames, points = unpack(">2i", file.read(8))
+    time = unpack((">%df" % frames), file.read(frames * 4))
+    
+    print('\tpoints:%d frames:%d' % (points,frames))
+
+    # If target object doesn't have Basis shape key, create it.
+    try:
+        num_keys = len( ob.data.shape_keys.keys )
+    except:
+        basis = ob.add_shape_key()
+        basis.name = "Basis"
+        ob.data.update()
+
+    scene.current_frame = PREF_START_FRAME
+
+    def UpdateMesh(ob, fr):
+    
+        # Insert new shape key
+        new_shapekey = ob.add_shape_key()
+        new_shapekey.name = ("frame_%.4d" % fr)
+        new_shapekey_name = new_shapekey.name
+            
+        ob.active_shape_key_index = len(ob.data.shape_keys.keys)-1
+        index = len(ob.data.shape_keys.keys)-1
+        ob.shape_key_lock = True
+            
+        verts = ob.data.shape_keys.keys[ len(ob.data.shape_keys.keys)-1 ].data
+        
+
+        for v in verts:
+            # 12 is the size of 3 floats
+            x,y,z= unpack('>3f', file.read(12))
+            v.co[:] = x,z,y
+        #me.update()
+        ob.shape_key_lock = False
+    
+
+        # insert keyframes
+        shape_keys = ob.data.shape_keys
+
+        scene.current_frame -= 1
+        ob.data.shape_keys.keys[index].value = 0.0
+        shape_keys.keys[len(ob.data.shape_keys.keys)-1].keyframe_insert("value")
+
+        scene.current_frame += 1
+        ob.data.shape_keys.keys[index].value = 1.0
+        shape_keys.keys[len(ob.data.shape_keys.keys)-1].keyframe_insert("value")
+
+        scene.current_frame += 1
+        ob.data.shape_keys.keys[index].value = 0.0
+        shape_keys.keys[len(ob.data.shape_keys.keys)-1].keyframe_insert("value")
+
+        ob.data.update()       
+
+
+    for i in range(frames):
+        UpdateMesh(ob, i)
+    
+
+from bpy.props import *
+
+
+class importMDD(bpy.types.Operator):
+    '''Import MDD vertex keyframe file to shape keys'''
+    bl_idname = "import.mdd"
+    bl_label = "Import 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 importing the MDD file", maxlen=1024)
+    #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 inserting animation", min=minframe, max=maxframe, default=0)
+
+
+    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")
+
+        mdd_import( self.properties.path, bpy.context.active_object, context.scene, self.properties.start_frame, 1)
+
+        return {'FINISHED'}
+
+    def invoke(self, context, event):
+        wm = context.manager
+        wm.add_fileselect(self)
+        return {'RUNNING_MODAL'}
+
+
+def menu_func(self, context):
+    self.layout.operator(importMDD.bl_idname, text="Lightwave Point Cache (.mdd)")
+
+
+def register():
+    bpy.types.register(importMDD)
+    bpy.types.INFO_MT_file_import.append(menu_func)
+    
+def unregister():
+    bpy.types.unregister(importMDD)
+    bpy.types.INFO_MT_file_import.remove(menu_func)
+
+if __name__ == "__main__":
+    register()