From 15f17383a331c0f217ba532e6dd927592dcae4c7 Mon Sep 17 00:00:00 2001
From: Nathan Letwory <nathan@letworyinteractive.com>
Date: Tue, 12 Apr 2011 18:37:50 +0000
Subject: Tag trunk/py (addons) for 2.57 release

---
 io_shape_mdd/export_mdd.py | 130 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 130 insertions(+)
 create mode 100644 io_shape_mdd/export_mdd.py

(limited to 'io_shape_mdd/export_mdd.py')

diff --git a/io_shape_mdd/export_mdd.py b/io_shape_mdd/export_mdd.py
new file mode 100644
index 00000000..85163280
--- /dev/null
+++ b/io_shape_mdd/export_mdd.py
@@ -0,0 +1,130 @@
+# ##### 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+#
+# ##### END GPL LICENSE BLOCK #####
+
+# <pep8 compliant>
+
+# Contributors: Bill L.Nieuwendorp
+
+"""
+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
+"""
+
+import bpy
+import mathutils
+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()
+
+
+def check_vertcount(mesh, vertcount):
+    '''
+    check and make sure the vertcount is consistent throughout the frame range
+    '''
+    if len(mesh.vertices) != vertcount:
+        raise Exception('Error, number of verts has changed during animation, cannot export')
+        f.close()
+        zero_file(filepath)
+        return
+
+
+def save(operator, context, filepath="", frame_start=1, frame_end=300, fps=25):
+    """
+    Blender.Window.WaitCursor(1)
+
+    mesh_orig = Mesh.New()
+    mesh_orig.getFromObject(obj.name)
+    """
+
+    scene = context.scene
+    obj = context.object
+
+    if bpy.ops.object.mode_set.poll():
+        bpy.ops.object.mode_set(mode='OBJECT')
+
+    orig_frame = scene.frame_current
+    scene.frame_set(frame_start)
+    me = obj.to_mesh(scene, 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.vertices)
+
+    numframes = frame_end - frame_start + 1
+    fps = float(fps)
+    f = open(filepath, '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 / fps for frame in range(numframes)]))  # seconds
+
+    #rest frame needed to keep frames in sync
+    """
+    Blender.Set('curframe', frame_start)
+    me_tmp.getFromObject(obj.name)
+    """
+
+    check_vertcount(me, numverts)
+    me.transform(mat_flip * obj.matrix_world)
+    f.write(pack(">%df" % (numverts * 3), *[axis for v in me.vertices for axis in v.co]))
+
+    for frame in range(frame_start, frame_end + 1):  # in order to start at desired frame
+        """
+        Blender.Set('curframe', frame)
+        me_tmp.getFromObject(obj.name)
+        """
+
+        scene.frame_set(frame)
+        me = obj.to_mesh(scene, True, 'PREVIEW')
+        check_vertcount(me, numverts)
+        me.transform(mat_flip * obj.matrix_world)
+
+        # Write the vertex data
+        f.write(pack(">%df" % (numverts * 3), *[axis for v in me.vertices for axis in v.co]))
+
+    """
+    me_tmp.vertices= None
+    """
+    f.close()
+
+    print('MDD Exported: %r frames:%d\n' % (filepath, numframes - 1))
+    """
+    Blender.Window.WaitCursor(0)
+    Blender.Set('curframe', orig_frame)
+    """
+    scene.frame_set(orig_frame)
+
+    return {'FINISHED'}
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