Initial commit of new FBX 7.4 binary exporter

What to expect:
* Static export of empties, meshes, cameras and lamps, as well as materials and (image!) textures should work OK.
  There are a few advanced topics still TODO regarding meshes and mat/tex, though.
* Custom properties from objects/meshes/lamps/cameras/armatures/bones/materials/textures are exported too (only simple ones, ints/floats/strings).
* Armature export: this needs testing by people having *native* FBX aplications, linking between bones and meshes seems to work, but I have doubts about bones orientations.
* Animation: still a complete TODO.

Note that old FBX ASCII 6.1 exporter is still available (top dropdown in exporter's UI).

Many thanks to Campbell, which did the ground work of decyphering FBX binary format and wrote basic code to read/write it.

1 files changed, 74 insertions, 0 deletions

diff --git a/io_scene_fbx/data_types.py b/io_scene_fbx/data_types.py
new file mode 100644
index 00000000..3a505be8
--- /dev/null
+++ b/io_scene_fbx/data_types.py
@@ -0,0 +1,74 @@
+# ##### 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>
+
+# Script copyright (C) 2006-2012, assimp team
+# Script copyright (C) 2013 Blender Foundation
+
+BOOL = b'C'[0]
+INT16 = b'Y'[0]
+INT32 = b'I'[0]
+INT64 = b'L'[0]
+FLOAT32 = b'F'[0]
+FLOAT64 = b'D'[0]
+BYTES = b'R'[0]
+STRING = b'S'[0]
+INT32_ARRAY = b'i'[0]
+INT64_ARRAY = b'l'[0]
+FLOAT32_ARRAY = b'f'[0]
+FLOAT64_ARRAY = b'd'[0]
+BOOL_ARRAY = b'b'[0]
+BYTE_ARRAY = b'c'[0]
+
+# array types - actual length may vary (depending on underlying C implementation)!
+import array
+
+# For now, bytes and bool are assumed always 1byte.
+ARRAY_BOOL = 'b'
+ARRAY_BYTE = 'B'
+
+ARRAY_INT32 = None
+ARRAY_INT64 = None
+for _t in 'ilq':
+    size = array.array(_t).itemsize
+    if size == 4:
+        ARRAY_INT32 = _t
+    elif size == 8:
+        ARRAY_INT64 = _t
+    if ARRAY_INT32 and ARRAY_INT64:
+        break
+if not ARRAY_INT32:
+    raise Exception("Impossible to get a 4-bytes integer type for array!")
+if not ARRAY_INT64:
+    raise Exception("Impossible to get an 8-bytes integer type for array!")
+
+ARRAY_FLOAT32 = None
+ARRAY_FLOAT64 = None
+for _t in 'fd':
+    size = array.array(_t).itemsize
+    if size == 4:
+        ARRAY_FLOAT32 = _t
+    elif size == 8:
+        ARRAY_FLOAT64 = _t
+    if ARRAY_FLOAT32 and ARRAY_FLOAT64:
+        break
+if not ARRAY_FLOAT32:
+    raise Exception("Impossible to get a 4-bytes float type for array!")
+if not ARRAY_FLOAT64:
+    raise Exception("Impossible to get an 8-bytes float type for array!")