Initial Collada exporter from Juan Linietsky (T41071)
authorCampbell Barton <ideasman42@gmail.com>
Tue, 15 Jul 2014 09:03:14 +0000 (19:03 +1000)
committerLuca Carella <bkarelb@hotmail.it>
Thu, 25 Dec 2014 17:56:31 +0000 (18:56 +0100)
io_scene_dae/__init__.py [new file with mode: 0644]
io_scene_dae/export_dae.py [new file with mode: 0644]

diff --git a/io_scene_dae/__init__.py b/io_scene_dae/__init__.py
new file mode 100644 (file)
index 0000000..c823a72
--- /dev/null
@@ -0,0 +1,178 @@
+# ##### 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 #####
+
+# <pep8-80 compliant>
+
+bl_info = {
+    "name": "Khronos Collada format",
+    "author": "Juan Linietsky",
+    "blender": (2, 7, 1),
+    "location": "File > Import-Export",
+    "description": "Export DAE Scenes",
+    "warning": "",
+    "wiki_url": "",
+    "tracker_url": "",
+    "support": 'OFFICIAL',
+    "category": "Import-Export",
+}
+
+
+if "bpy" in locals():
+    import imp
+    if "export_dae" in locals():
+        imp.reload(export_dae)
+
+
+import bpy
+from bpy.props import StringProperty, BoolProperty, FloatProperty, EnumProperty
+
+from bpy_extras.io_utils import ExportHelper
+
+
+class ExportDAE(bpy.types.Operator, ExportHelper):
+    '''Selection to DAE'''
+    bl_idname = "export_scene.dae"
+    bl_label = "Export DAE"
+    bl_options = {'PRESET'}
+
+    filename_ext = ".dae"
+    filter_glob = StringProperty(default="*.dae", options={'HIDDEN'})
+
+    # List of operator properties, the attributes will be assigned
+    # to the class instance from the operator settings before calling.
+
+    object_types = EnumProperty(
+            name="Object Types",
+            options={'ENUM_FLAG'},
+            items=(('EMPTY', "Empty", ""),
+                   ('CAMERA', "Camera", ""),
+                   ('LAMP', "Lamp", ""),
+                   ('ARMATURE', "Armature", ""),
+                   ('MESH', "Mesh", ""),
+                   ('CURVE', "Curve", ""),
+                   ),
+            default={'EMPTY', 'CAMERA', 'LAMP', 'ARMATURE', 'MESH', 'CURVE'},
+            )
+
+    use_export_selected = BoolProperty(
+            name="Selected Objects",
+            description="Export only selected objects "
+                        "(and visible in active layers if that applies)",
+            default=False,
+            )
+    use_mesh_modifiers = BoolProperty(
+            name="Apply Modifiers",
+            description="Apply modifiers to mesh objects (on a copy!)",
+            default=True,
+            )
+    use_copy_images = BoolProperty(
+            name="Copy Images",
+            description="Copy Images (create images/ subfolder)",
+            default=False,
+            )
+    use_active_layers = BoolProperty(
+            name="Active Layers",
+            description="Export only objects on the active layers",
+            default=True,
+            )
+    use_exclude_ctrl_bones = BoolProperty(
+            name="Exclude Control Bones",
+            description="Exclude skeleton bones with names that begin with 'ctrl'",
+            default=True,
+            )
+    use_anim = BoolProperty(
+            name="Export Animation",
+            description="Export keyframe animation",
+            default=False,
+            )
+    use_anim_action_all = BoolProperty(
+            name="All Actions",
+            description="Export all actions for the first armature found in separate DAE files",
+            default=False,
+            )
+    use_anim_optimize = BoolProperty(
+            name="Optimize Keyframes",
+            description="Remove double keyframes",
+            default=True,
+            )
+    anim_optimize_precision = FloatProperty(
+            name="Precision",
+            description="Tolerence for comparing double keyframes "
+                        "(higher for greater accuracy)",
+            min=1, max=16,
+            soft_min=1, soft_max=16,
+            default=6.0,
+            )
+    use_metadata = BoolProperty(
+            name="Use Metadata",
+            default=True,
+            options={'HIDDEN'},
+            )
+
+    @property
+    def check_extension(self):
+        # return self.batch_mode == 'OFF'
+        return True
+
+    def check(self, context):
+        return True
+        """
+        isretur_def_change = super().check(context)
+        return (is_xna_change or is_def_change)
+        """
+
+    def execute(self, context):
+        if not self.filepath:
+            raise Exception("filepath not set")
+
+        """        global_matrix = Matrix()
+
+                global_matrix[0][0] = \
+                global_matrix[1][1] = \
+                global_matrix[2][2] = self.global_scale
+        """
+
+        keywords = self.as_keywords(ignore=("axis_forward",
+                                            "axis_up",
+                                            "global_scale",
+                                            "check_existing",
+                                            "filter_glob",
+                                            "xna_validate",
+                                            ))
+
+        from . import export_dae
+        return export_dae.save(self, context, **keywords)
+
+
+def menu_func(self, context):
+    self.layout.operator(ExportDAE.bl_idname, text="Khronos Collada (.dae)")
+
+
+def register():
+    bpy.utils.register_module(__name__)
+
+    bpy.types.INFO_MT_file_export.append(menu_func)
+
+
+def unregister():
+    bpy.utils.unregister_module(__name__)
+
+    bpy.types.INFO_MT_file_export.remove(menu_func)
+
+if __name__ == "__main__":
+    register()
diff --git a/io_scene_dae/export_dae.py b/io_scene_dae/export_dae.py
new file mode 100644 (file)
index 0000000..1847d6f
--- /dev/null
@@ -0,0 +1,1214 @@
+# ##### 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) Juan Linietsky
+# Contact Info: juan@codenix.com
+
+"""
+This script is an exporter to the Khronos Collada file format.
+
+http://www.khronos.org/collada/
+"""
+
+# TODO:
+# Materials & Textures
+# Optionally export Vertex Colors
+# Morph Targets
+# Control bone removal
+# Copy textures
+# Export Keyframe Optimization
+# --
+# Morph Targets
+# Blender native material? (?)
+
+import os
+import time
+import math  # math.pi
+import shutil
+import bpy
+from mathutils import Vector, Matrix
+
+#according to collada spec, order matters
+S_ASSET=0
+S_IMGS=1
+S_FX=2
+S_MATS=3
+S_GEOM=4
+S_CONT=5
+S_CAMS=6
+S_LAMPS=7
+S_ANIM_CLIPS=8
+S_NODES=9
+S_ANIM=10
+
+CMP_EPSILON=0.0001
+
+def snap_tup(tup):
+    ret=()
+    for x in tup:
+        ret+=( x-math.fmod(x,0.0001), )
+
+    return tup
+
+
+def strmtx(mtx):
+    s=" "
+    for x in range(4):
+        for y in range(4):
+            s+=str(mtx[x][y])
+            s+=" "
+    s+=" "
+    return s
+
+def numarr(a,mult=1.0):
+    s=" "
+    for x in a:
+        s+=" "+str(x*mult)
+    s+=" "
+    return s
+
+def strarr(arr):
+    s=" "
+    for x in arr:
+        s+=" "+str(x)
+    s+=" "
+    return s
+
+
+
+class DaeExporter:
+
+    def validate_id(self,d):
+        if (d.find("id-")==0):
+            return "z"+d
+        return d
+
+
+    def new_id(self,t):
+        self.last_id+=1
+        return "id-"+t+"-"+str(self.last_id)
+
+    class Vertex:
+
+        def close_to(v):
+            if ( (self.vertex-v.vertex).length() > CMP_EPSILON ):
+                return False
+            if ( (self.normal-v.normal).length() > CMP_EPSILON ):
+                return False
+            if ( (self.uv-v.uv).length() > CMP_EPSILON ):
+                return False
+            if ( (self.uv2-v.uv2).length() > CMP_EPSILON ):
+                return False
+
+            return True
+
+        def get_tup(self):
+            tup = (self.vertex.x,self.vertex.y,self.vertex.z,self.normal.x,self.normal.y,self.normal.z)
+            for t in self.uv:
+                tup = tup + (t.x,t.y)
+            return tup
+
+        def __init__(self):
+            self.vertex = Vector( (0.0,0.0,0.0) )
+            self.normal = Vector( (0.0,0.0,0.0) )
+            self.color = Vector( (0.0,0.0,0.0) )
+            self.uv = []
+            self.uv2 = Vector( (0.0,0.0) )
+            self.bones=[]
+            self.weights=[]
+
+
+    def writel(self,section,indent,text):
+        if (not (section in self.sections)):
+            self.sections[section]=[]
+        line=""
+        for x in range(indent):
+            line+="\t"
+        line+=text
+        self.sections[section].append(line)
+
+
+    def export_image(self,image):
+
+        if (image in self.image_cache):
+            return self.image_cache[image]
+
+        imgpath = image.filepath
+        if (imgpath.find("//")==0 or imgpath.find("\\\\")==0):
+            #if relative, convert to absolute
+            imgpath = bpy.path.abspath(imgpath)
+
+        #path is absolute, now do something!
+
+        if (self.config["use_copy_images"]):
+            #copy image
+            basedir = os.path.dirname(self.path)+"/images"
+            if (not os.path.isdir(basedir)):
+                os.makedirs(basedir)
+            dstfile=basedir+"/"+os.path.basename(imgpath)
+            if (not os.path.isfile(dstfile)):
+                shutil.copy(imgpath,dstfile)
+            imgpath="images/"+os.path.basename(imgpath)
+
+        else:
+            #export relative, always, no one wants absolute paths.
+            imgpath = os.path.relpath(imgpath,os.path.dirname(self.path)).replace("\\","/") # export unix compatible always
+
+
+        imgid = self.new_id("image")
+        self.writel(S_IMGS,1,'<image id="'+imgid+'" name="'+image.name+'">')
+        self.writel(S_IMGS,2,'<init_from>'+imgpath+'</init_from>"/>')
+        self.writel(S_IMGS,1,'</image>')
+        self.image_cache[image]=imgid
+        return imgid
+
+    def export_material(self,material,double_sided_hint=True):
+
+        if (material in self.material_cache):
+            return self.material_cache[material]
+
+        fxid = self.new_id("fx")
+        self.writel(S_FX,1,'<effect id="'+fxid+'" name="'+material.name+'-fx">')
+        self.writel(S_FX,2,'<profile_COMMON>')
+
+        #Find and fetch the textures and create sources
+        sampler_table={}
+        diffuse_tex=None
+        specular_tex=None
+        emission_tex=None
+        normal_tex=None
+        for i in range(len(material.texture_slots)):
+            ts=material.texture_slots[i]
+            if (not ts):
+                continue
+            if (not ts.use):
+                continue
+            if (not ts.texture):
+                continue
+            if (ts.texture.type!="IMAGE"):
+                continue
+
+            if (ts.texture.image==None):
+                continue
+
+            #image
+            imgid = self.export_image(ts.texture.image)
+
+            #surface
+            surface_sid = self.new_id("fx_surf")
+            self.writel(S_FX,3,'<newparam sid="'+surface_sid+'">')
+            self.writel(S_FX,4,'<surface type="2D">')
+            self.writel(S_FX,5,'<init_from>'+imgid+'</init_from>') #this is sooo weird
+            self.writel(S_FX,5,'<format>A8R8G8B8</format>')
+            self.writel(S_FX,4,'</surface>')
+            self.writel(S_FX,3,'</newparam>')
+            #sampler, collada sure likes it difficult
+            sampler_sid = self.new_id("fx_sampler")
+            self.writel(S_FX,3,'<newparam sid="'+sampler_sid+'">')
+            self.writel(S_FX,4,'<sampler2D>')
+            self.writel(S_FX,5,'<source>'+surface_sid+'</source>')
+            self.writel(S_FX,4,'</sampler2D>')
+            self.writel(S_FX,3,'</newparam>')
+            sampler_table[i]=sampler_sid
+
+            if (ts.use_map_color_diffuse and diffuse_tex==None):
+                diffuse_tex=sampler_sid
+            if (ts.use_map_color_spec and specular_tex==None):
+                specular_tex=sampler_sid
+            if (ts.use_map_emit and emission_tex==None):
+                emission_tex=sampler_sid
+            if (ts.use_map_normal and normal_tex==None):
+                normal_tex=sampler_sid
+
+        self.writel(S_FX,3,'<technique sid="common">')
+        shtype="blinn"
+        self.writel(S_FX,4,'<'+shtype+'>')
+        #ambient? from where?
+
+        self.writel(S_FX,5,'<emission>')
+        if (emission_tex!=None):
+            self.writel(S_FX,6,'<texture texture="'+emission_tex+'" texcoord="CHANNEL1"/>')
+        else:
+            self.writel(S_FX,6,'<color>'+numarr(material.diffuse_color,material.emit)+' </color>') # not totally right but good enough
+        self.writel(S_FX,5,'</emission>')
+
+        self.writel(S_FX,5,'<ambient>')
+        self.writel(S_FX,6,'<color>'+numarr(self.scene.world.ambient_color,material.ambient)+' </color>')
+        self.writel(S_FX,5,'</ambient>')
+
+        self.writel(S_FX,5,'<diffuse>')
+        if (diffuse_tex!=None):
+            self.writel(S_FX,6,'<texture texture="'+diffuse_tex+'" texcoord="CHANNEL1"/>')
+        else:
+            self.writel(S_FX,6,'<color>'+numarr(material.diffuse_color,material.diffuse_intensity)+'</color>')
+        self.writel(S_FX,5,'</diffuse>')
+
+        self.writel(S_FX,5,'<specular>')
+        if (specular_tex!=None):
+            self.writel(S_FX,6,'<texture texture="'+specular_tex+'" texcoord="CHANNEL1"/>')
+        else:
+            self.writel(S_FX,6,'<color>'+numarr(material.specular_color,material.specular_intensity)+'</color>')
+        self.writel(S_FX,5,'</specular>')
+
+        self.writel(S_FX,5,'<shininess>')
+        self.writel(S_FX,6,'<float>'+str(material.specular_hardness)+'</float>')
+        self.writel(S_FX,5,'</shininess>')
+
+        self.writel(S_FX,5,'<reflective>')
+        self.writel(S_FX,6,'<color>'+strarr(material.mirror_color)+'</color>')
+        self.writel(S_FX,5,'</reflective>')
+
+        if (material.use_transparency):
+            self.writel(S_FX,5,'<transparency>')
+            self.writel(S_FX,6,'<float>'+str(material.alpha)+'</float>')
+            self.writel(S_FX,5,'</transparency>')
+
+
+        self.writel(S_FX,5,'<index_of_refraction>'+str(material.specular_ior)+'</index_of_refraction>')
+
+        self.writel(S_FX,4,'</'+shtype+'>')
+
+        self.writel(S_FX,4,'<extra>')
+        self.writel(S_FX,5,'<technique profile="FCOLLADA">')
+        if (normal_tex):
+            self.writel(S_FX,6,'<bump bumptype="NORMALMAP">')
+            self.writel(S_FX,7,'<texture texture="'+normal_tex+'" texcoord="CHANNEL1"/>')
+            self.writel(S_FX,6,'</bump>')
+
+        self.writel(S_FX,5,'</technique>')
+        self.writel(S_FX,4,'</extra>')
+
+        self.writel(S_FX,3,'</technique>')
+        self.writel(S_FX,2,'</profile_COMMON>')
+        self.writel(S_FX,1,'</effect>')
+
+        # Also export blender material in all it's glory (if set as active)
+
+
+        #Material
+        matid = self.new_id("material")
+        self.writel(S_MATS,1,'<material id="'+matid+'" name="'+material.name+'">')
+        self.writel(S_MATS,2,'<instance_effect url="#'+fxid+'"/>')
+        self.writel(S_MATS,1,'</material>')
+
+        self.material_cache[material]=matid
+        return matid
+
+
+    def export_mesh(self,node,armature=None):
+
+        if (len(node.modifiers) and self.config["use_mesh_modifiers"]):
+            mesh=node.to_mesh(self.scene,True,"RENDER") #is this allright?
+        else:
+            mesh=node.data
+
+        if (mesh in self.mesh_cache):
+            return self.mesh_cache[mesh]
+
+        mesh.update(calc_tessface=True)
+        vertices=[]
+        vertex_map={}
+        surface_indices={}
+        materials={}
+
+        materials={}
+
+        si=None
+        if (armature!=None):
+            si=self.skeleton_info[armature]
+
+        has_uv=False
+        has_uv2=False
+        has_weights=armature!=None
+        has_colors=False
+        mat_assign=[]
+
+        uv_layer_count=len(mesh.uv_textures)
+
+        for fi in range(len(mesh.tessfaces)):
+            f=mesh.tessfaces[fi]
+
+
+            if (not (f.material_index in surface_indices)):
+                surface_indices[f.material_index]=[]
+                print("Type: "+str(type(f.material_index)))
+                print("IDX: "+str(f.material_index)+"/"+str(len(mesh.materials)))
+
+
+                try:
+                    #Bizarre blender behavior i don't understand, so catching exception
+                    mat = mesh.materials[f.material_index]
+                except:
+                    mat= None
+
+                if (mat!=None):
+                    materials[f.material_index]=self.export_material( mat )
+                else:
+                    materials[f.material_index]=None #weird, has no material?
+
+            indices = surface_indices[f.material_index]
+            vi=[]
+            #make triangles always
+            if (len(f.vertices)==3):
+                vi.append(0)
+                vi.append(1)
+                vi.append(2)
+            elif (len(f.vertices)==4):
+                vi.append(0)
+                vi.append(1)
+                vi.append(2)
+                vi.append(0)
+                vi.append(2)
+                vi.append(3)
+
+            for x in vi:
+                mv = mesh.vertices[f.vertices[x]]
+
+                v = self.Vertex()
+                v.vertex = Vector( mv.co )
+
+                for xt in mesh.tessface_uv_textures:
+                    d = xt.data[fi]
+                    uvsrc = [d.uv1,d.uv2,d.uv3,d.uv4]
+                    v.uv.append( Vector( uvsrc[x] ) )
+
+
+                if (f.use_smooth):
+                    v.normal=Vector( mv.normal )
+                else:
+                    v.normal=Vector( f.normal )
+
+                   # if (armature):
+                   #         v.vertex = node.matrix_world * v.vertex
+
+                #v.color=Vertex(mv. ???
+
+                if (armature!=None):
+                    wsum=0.0
+                    for vg in mv.groups:
+                        if vg.group >= len(node.vertex_groups):
+                            continue;
+                        name = node.vertex_groups[vg.group].name
+                        if (name in si["bone_index"]):
+                            if (vg.weight>0.001): #blender has a lot of zero weight stuff
+                                v.bones.append(si["bone_index"][name])
+                                v.weights.append(vg.weight)
+                                wsum+=vg.weight
+
+
+                tup = v.get_tup()
+                idx = 0
+                if (tup in vertex_map):
+                    idx = vertex_map[tup]
+                else:
+                    idx = len(vertices)
+                    vertices.append(v)
+                    vertex_map[tup]=idx
+
+                indices.append(idx)
+
+        meshid = self.new_id("mesh")
+
+        self.writel(S_GEOM,1,'<geometry id="'+meshid+'" name="'+mesh.name+'">')
+        self.writel(S_GEOM,2,'<mesh>')
+
+
+        # Vertex Array
+        self.writel(S_GEOM,3,'<source id="'+meshid+'-positions">')
+        float_values=""
+        for v in vertices:
+             float_values+=" "+str(v.vertex.x)+" "+str(v.vertex.y)+" "+str(v.vertex.z)
+        self.writel(S_GEOM,4,'<float_array id="'+meshid+'-positions-array" count="'+str(len(vertices)*3)+'">'+float_values+'</float_array>')
+        self.writel(S_GEOM,4,'<technique_common>')
+        self.writel(S_GEOM,4,'<accessor source="#'+meshid+'-positions-array" count="'+str(len(vertices))+'" stride="3">')
+        self.writel(S_GEOM,5,'<param name="X" type="float"/>')
+        self.writel(S_GEOM,5,'<param name="Y" type="float"/>')
+        self.writel(S_GEOM,5,'<param name="Z" type="float"/>')
+        self.writel(S_GEOM,4,'</accessor>')
+        self.writel(S_GEOM,4,'</technique_common>')
+        self.writel(S_GEOM,3,'</source>')
+
+        # Normal Array
+
+        self.writel(S_GEOM,3,'<source id="'+meshid+'-normals">')
+        float_values=""
+        for v in vertices:
+             float_values+=" "+str(v.normal.x)+" "+str(v.normal.y)+" "+str(v.normal.z)
+        self.writel(S_GEOM,4,'<float_array id="'+meshid+'-normals-array" count="'+str(len(vertices)*3)+'">'+float_values+'</float_array>')
+        self.writel(S_GEOM,4,'<technique_common>')
+        self.writel(S_GEOM,4,'<accessor source="#'+meshid+'-normals-array" count="'+str(len(vertices))+'" stride="3">')
+        self.writel(S_GEOM,5,'<param name="X" type="float"/>')
+        self.writel(S_GEOM,5,'<param name="Y" type="float"/>')
+        self.writel(S_GEOM,5,'<param name="Z" type="float"/>')
+        self.writel(S_GEOM,4,'</accessor>')
+        self.writel(S_GEOM,4,'</technique_common>')
+        self.writel(S_GEOM,3,'</source>')
+
+        # UV Arrays
+
+        for uvi in range(uv_layer_count):
+
+            self.writel(S_GEOM,3,'<source id="'+meshid+'-texcoord-'+str(uvi)+'">')
+            float_values=""
+            for v in vertices:
+                float_values+=" "+str(v.uv[uvi].x)+" "+str(v.uv[uvi].y)
+            self.writel(S_GEOM,4,'<float_array id="'+meshid+'-texcoord-'+str(uvi)+'-array" count="'+str(len(vertices)*2)+'">'+float_values+'</float_array>')
+            self.writel(S_GEOM,4,'<technique_common>')
+            self.writel(S_GEOM,4,'<accessor source="#'+meshid+'-texcoord-'+str(uvi)+'-array" count="'+str(len(vertices))+'" stride="2">')
+            self.writel(S_GEOM,5,'<param name="S" type="float"/>')
+            self.writel(S_GEOM,5,'<param name="T" type="float"/>')
+            self.writel(S_GEOM,4,'</accessor>')
+            self.writel(S_GEOM,4,'</technique_common>')
+            self.writel(S_GEOM,3,'</source>')
+
+        # Triangle Lists
+        self.writel(S_GEOM,3,'<vertices id="'+meshid+'-vertices">')
+        self.writel(S_GEOM,4,'<input semantic="POSITION" source="#'+meshid+'-positions"/>')
+        self.writel(S_GEOM,3,'</vertices>')
+
+        for m in surface_indices:
+            indices = surface_indices[m]
+            mat = materials[m]
+            if (mat!=None):
+                matref = self.new_id("trimat")
+                self.writel(S_GEOM,3,'<triangles count="'+str(int(len(indices)/3))+'" material="'+matref+'">') # todo material
+                mat_assign.append( (mat,matref) )
+            else:
+                self.writel(S_GEOM,3,'<triangles count="'+str(int(len(indices)/3))+'">') # todo material
+            self.writel(S_GEOM,4,'<input semantic="VERTEX" source="#'+meshid+'-vertices" offset="0"/>')
+            self.writel(S_GEOM,4,'<input semantic="NORMAL" source="#'+meshid+'-normals" offset="1"/>')
+            extra_indices=0
+            for uvi in range(uv_layer_count):
+                self.writel(S_GEOM,4,'<input semantic="TEXCOORD" source="#'+meshid+'-texcoord-'+str(uvi)+'" offset="'+str(2+uvi)+'" set="'+str(uvi)+'"/>')
+                extra_indices+=1
+
+            int_values="<p>"
+            for i in range(len(indices)):
+                int_values+=" "+str(indices[i]) # vertex index
+                int_values+=" "+str(indices[i]) # normal index
+                for e in range(extra_indices):
+                    int_values+=" "+str(indices[i]) # normal index
+            int_values+="</p>"
+            self.writel(S_GEOM,4,int_values)
+            self.writel(S_GEOM,3,'</triangles>')
+
+
+        self.writel(S_GEOM,2,'</mesh>')
+        self.writel(S_GEOM,1,'</geometry>')
+
+        meshdata={}
+        meshdata["id"]=meshid
+        meshdata["material_assign"]=mat_assign
+        self.mesh_cache[mesh]=meshdata
+
+
+        # Export armature data (if armature exists)
+
+        if (armature!=None):
+
+            contid = self.new_id("controller")
+
+            self.writel(S_CONT,1,'<controller id="'+contid+'">')
+            self.writel(S_CONT,2,'<skin source="'+meshid+'">')
+            self.writel(S_CONT,3,'<bind_shape_matrix>'+strmtx(node.matrix_world)+'</bind_shape_matrix>')
+            #Joint Names
+            self.writel(S_CONT,3,'<source id="'+contid+'-joints">')
+            name_values=""
+            for v in si["bone_names"]:
+                name_values+=" "+v
+
+            self.writel(S_CONT,4,'<Name_array id="'+contid+'-joints-array" count="'+str(len(si["bone_names"]))+'">'+name_values+'</Name_array>')
+            self.writel(S_CONT,4,'<technique_common>')
+            self.writel(S_CONT,4,'<accessor source="#'+contid+'-joints-array" count="'+str(len(si["bone_names"]))+'" stride="1">')
+            self.writel(S_CONT,5,'<param name="JOINT" type="Name"/>')
+            self.writel(S_CONT,4,'</accessor>')
+            self.writel(S_CONT,4,'</technique_common>')
+            self.writel(S_CONT,3,'</source>')
+            #Pose Matrices!
+            self.writel(S_CONT,3,'<source id="'+contid+'-bind_poses">')
+            pose_values=""
+            for v in si["bone_bind_poses"]:
+                pose_values+=" "+strmtx(v)
+
+            self.writel(S_CONT,4,'<float_array id="'+contid+'-bind_poses-array" count="'+str(len(si["bone_bind_poses"])*16)+'">'+pose_values+'</float_array>')
+            self.writel(S_CONT,4,'<technique_common>')
+            self.writel(S_CONT,4,'<accessor source="#'+contid+'-bind_poses-array" count="'+str(len(si["bone_bind_poses"]))+'" stride="16">')
+            self.writel(S_CONT,5,'<param name="TRANSFORM" type="float4x4"/>')
+            self.writel(S_CONT,4,'</accessor>')
+            self.writel(S_CONT,4,'</technique_common>')
+            self.writel(S_CONT,3,'</source>')
+            #Skin Weights!
+            self.writel(S_CONT,3,'<source id="'+contid+'-skin_weights">')
+            skin_weights=""
+            skin_weights_total=0
+            for v in vertices:
+                skin_weights_total+=len(v.weights)
+                for w in v.weights:
+                    skin_weights+=" "+str(w)
+
+            self.writel(S_CONT,4,'<float_array id="'+contid+'-skin_weights-array" count="'+str(skin_weights_total)+'">'+skin_weights+'</float_array>')
+            self.writel(S_CONT,4,'<technique_common>')
+            self.writel(S_CONT,4,'<accessor source="#'+contid+'-skin_weights-array" count="'+str(skin_weights_total)+'" stride="1">')
+            self.writel(S_CONT,5,'<param name="WEIGHT" type="float"/>')
+            self.writel(S_CONT,4,'</accessor>')
+            self.writel(S_CONT,4,'</technique_common>')
+            self.writel(S_CONT,3,'</source>')
+
+
+            self.writel(S_CONT,3,'<joints>')
+            self.writel(S_CONT,4,'<input semantic="JOINT" source="#'+contid+'-joints"/>')
+            self.writel(S_CONT,4,'<input semantic="INV_BIND_MATRIX" source="#'+contid+'-bind_poses"/>')
+            self.writel(S_CONT,3,'</joints>')
+            self.writel(S_CONT,3,'<vertex_weights count="'+str(len(vertices))+'">')
+            self.writel(S_CONT,4,'<input semantic="JOINT" source="#'+contid+'-joints" offset="0"/>')
+            self.writel(S_CONT,4,'<input semantic="WEIGHT" source="#'+contid+'-skin_weights" offset="1"/>')
+            vcounts=""
+            vs=""
+            vcount=0
+            for v in vertices:
+                vcounts+=" "+str(len(v.weights))
+                for b in v.bones:
+                    vs+=" "+str(b)
+                    vs+=" "+str(vcount)
+                    vcount+=1
+            self.writel(S_CONT,4,'<vcount>'+vcounts+'</vcount>')
+            self.writel(S_CONT,4,'<v>'+vs+'</v>')
+            self.writel(S_CONT,3,'</vertex_weights>')
+
+
+            self.writel(S_CONT,2,'</skin>')
+            self.writel(S_CONT,1,'</controller>')
+            meshdata["skin_id"]=contid
+
+
+        return meshdata
+
+
+    def export_mesh_node(self,node,il):
+
+        if (node.data==None):
+            return
+        armature=None
+
+        if (node.parent!=None):
+            if (node.parent.type=="ARMATURE"):
+                armature=node.parent
+
+
+        meshdata = self.export_mesh(node,armature)
+
+        if (armature==None):
+            self.writel(S_NODES,il,'<instance_geometry url="#'+meshdata["id"]+'">')
+        else:
+            self.writel(S_NODES,il,'<instance_controller url="#'+meshdata["skin_id"]+'">')
+            for sn in self.skeleton_info[armature]["skeleton_nodes"]:
+                self.writel(S_NODES,il+1,'<skeleton>#'+sn+'</skeleton>')
+
+
+        if (len(meshdata["material_assign"])>0):
+
+            self.writel(S_NODES,il+1,'<bind_material>')
+            self.writel(S_NODES,il+2,'<technique_common>')
+            for m in meshdata["material_assign"]:
+                self.writel(S_NODES,il+3,'<instance_material symbol="'+m[1]+'" target="#'+m[0]+'"/>')
+
+            self.writel(S_NODES,il+2,'</technique_common>')
+            self.writel(S_NODES,il+1,'</bind_material>')
+
+        if (armature==None):
+            self.writel(S_NODES,il,'</instance_geometry>')
+        else:
+            self.writel(S_NODES,il,'</instance_controller>')
+
+
+    def export_armature_bone(self,bone,il,si):
+        boneid = self.new_id("bone")
+        boneidx = si["bone_count"]
+        si["bone_count"]+=1
+        bonesid = si["name"]+"-"+str(boneidx)
+        si["bone_index"][bone.name]=boneidx
+        si["bone_ids"][bone]=boneid
+        si["bone_names"].append(bonesid)
+        self.writel(S_NODES,il,'<node id="'+boneid+'" sid="'+bonesid+'" name="'+bone.name+'" type="JOINT">')
+        il+=1
+        xform = bone.matrix_local
+        si["bone_bind_poses"].append((si["armature_xform"] * xform).inverted())
+
+        if (bone.parent!=None):
+            xform = bone.parent.matrix_local.inverted() * xform
+        else:
+            si["skeleton_nodes"].append(boneid)
+
+        self.writel(S_NODES,il,'<matrix sid="transform">'+strmtx(xform)+'</matrix>')
+        for c in bone.children:
+            self.export_armature_bone(c,il,si)
+        il-=1
+        self.writel(S_NODES,il,'</node>')
+
+
+    def export_armature_node(self,node,il):
+
+        if (node.data==None):
+            return
+
+        self.skeletons.append(node)
+
+        armature = node.data
+        self.skeleton_info[node]={ "bone_count":0, "name":node.name, "bone_index":{},"bone_ids":{},"bone_names":[],"bone_bind_poses":[],"skeleton_nodes":[],"armature_xform":node.matrix_world }
+
+
+
+        for b in armature.bones:
+            if (b.parent!=None):
+                continue
+            self.export_armature_bone(b,il,self.skeleton_info[node])
+
+        if (node.pose):
+            for b in node.pose.bones:
+                for x in b.constraints:
+                    if (x.type=='ACTION'):
+                        self.action_constraints.append(x.action)
+
+
+    def export_camera_node(self,node,il):
+
+        if (node.data==None):
+            return
+
+        camera=node.data
+        camid=self.new_id("camera")
+        self.writel(S_CAMS,1,'<camera id="'+camid+'" name="'+camera.name+'">')
+        self.writel(S_CAMS,2,'<optics>')
+        self.writel(S_CAMS,3,'<technique_common>')
+        if (camera.type=="PERSP"):
+            self.writel(S_CAMS,4,'<perspective>')
+            self.writel(S_CAMS,5,'<yfov> '+str(math.degrees(camera.angle))+' </yfov>') # I think?
+            self.writel(S_CAMS,5,'<aspect_ratio> '+str(self.scene.render.resolution_x / self.scene.render.resolution_y)+' </aspect_ratio>')
+            self.writel(S_CAMS,5,'<znear> '+str(camera.clip_start)+' </znear>')
+            self.writel(S_CAMS,5,'<zfar> '+str(camera.clip_end)+' </zfar>')
+            self.writel(S_CAMS,4,'</perspective>')
+        else:
+            self.writel(S_CAMS,4,'<orthografic>')
+            self.writel(S_CAMS,5,'<xmag> '+str(camera.ortho_scale)+' </xmag>') # I think?
+            self.writel(S_CAMS,5,'<aspect_ratio> '+str(self.scene.render.resolution_x / self.scene.render.resolution_y)+' </aspect_ratio>')
+            self.writel(S_CAMS,5,'<znear> '+str(camera.clip_start)+' </znear>')
+            self.writel(S_CAMS,5,'<zfar> '+str(camera.clip_end)+' </zfar>')
+            self.writel(S_CAMS,4,'</orthografic>')
+
+        self.writel(S_CAMS,3,'</technique_common>')
+        self.writel(S_CAMS,2,'</optics>')
+        self.writel(S_CAMS,1,'</camera>')
+
+
+        self.writel(S_NODES,il,'<instance_camera url="#'+camid+'"/>')
+
+    def export_lamp_node(self,node,il):
+
+        if (node.data==None):
+            return
+
+        light=node.data
+        lightid=self.new_id("light")
+        self.writel(S_LAMPS,1,'<light id="'+lightid+'" name="'+light.name+'">')
+        self.writel(S_LAMPS,2,'<optics>')
+        self.writel(S_LAMPS,3,'<technique_common>')
+
+        if (light.type=="POINT" or light.type=="HEMI"):
+            self.writel(S_LAMPS,4,'<point>')
+            self.writel(S_LAMPS,5,'<color>'+strarr(light.color)+'</color>')
+            att_by_distance = 2.0 / light.distance # convert to linear attenuation
+            self.writel(S_LAMPS,5,'<linear_attenuation>'+str(att_by_distance)+'</linear_attenuation>')
+            if (light.use_sphere):
+                self.writel(S_LAMPS,5,'<zfar>'+str(light.distance)+'</zfar>')
+
+            self.writel(S_LAMPS,4,'</point>')
+        elif (light.type=="SPOT"):
+            self.writel(S_LAMPS,4,'<spot>')
+            self.writel(S_LAMPS,5,'<color>'+strarr(light.color)+'</color>')
+            att_by_distance = 2.0 / light.distance # convert to linear attenuation
+            self.writel(S_LAMPS,5,'<linear_attenuation>'+str(att_by_distance)+'</linear_attenuation>')
+            self.writel(S_LAMPS,5,'<falloff_angle>'+str(math.degrees(light.spot_size))+'</falloff_angle>')
+            self.writel(S_LAMPS,4,'</spot>')
+
+
+        else: #write a sun lamp for everything else (not supported)
+            self.writel(S_LAMPS,4,'<directional>')
+            self.writel(S_LAMPS,5,'<color>'+strarr(light.color)+'</color>')
+            self.writel(S_LAMPS,4,'</directional>')
+
+
+        self.writel(S_LAMPS,3,'</technique_common>')
+        self.writel(S_LAMPS,2,'</optics>')
+        self.writel(S_LAMPS,1,'</light>')
+
+
+        self.writel(S_NODES,il,'<instance_light url="#'+lightid+'"/>')
+
+
+    def export_curve(self,curve):
+
+        splineid = self.new_id("spline")
+
+        self.writel(S_GEOM,1,'<geometry id="'+splineid+'" name="'+curve.name+'">')
+        self.writel(S_GEOM,2,'<spline closed="0">')
+
+        points=[]
+        interps=[]
+        handles_in=[]
+        handles_out=[]
+        tilts=[]
+
+        for cs in curve.splines:
+
+            if (cs.type=="BEZIER"):
+                for s in cs.bezier_points:
+                    points.append(s.co[0])
+                    points.append(s.co[1])
+                    points.append(s.co[2])
+
+
+                    handles_in.append(s.handle_left[0])
+                    handles_in.append(s.handle_left[1])
+                    handles_in.append(s.handle_left[2])
+
+                    handles_out.append(s.handle_right[0])
+                    handles_out.append(s.handle_right[1])
+                    handles_out.append(s.handle_right[2])
+
+
+                    tilts.append(s.tilt)
+                    interps.append("BEZIER")
+            else:
+
+                for s in cs.points:
+                    points.append(s.co[0])
+                    points.append(s.co[1])
+                    points.append(s.co[2])
+                    handles_in.append(s.co[0])
+                    handles_in.append(s.co[1])
+                    handles_in.append(s.co[2])
+                    handles_out.append(s.co[0])
+                    handles_out.append(s.co[1])
+                    handles_out.append(s.co[2])
+                    tilts.append(s.tilt)
+                    interps.append("LINEAR")
+
+
+
+
+        self.writel(S_GEOM,3,'<source id="'+splineid+'-positions">')
+        position_values=""
+        for x in points:
+            position_values+=" "+str(x)
+        self.writel(S_GEOM,4,'<float_array id="'+splineid+'-positions-array" count="'+str(len(points))+'">'+position_values+'</float_array>')
+        self.writel(S_GEOM,4,'<technique_common>')
+        self.writel(S_GEOM,4,'<accessor source="#'+splineid+'-positions-array" count="'+str(len(points)/3)+'" stride="3">')
+        self.writel(S_GEOM,5,'<param name="X" type="float"/>')
+        self.writel(S_GEOM,5,'<param name="Y" type="float"/>')
+        self.writel(S_GEOM,5,'<param name="Z" type="float"/>')
+        self.writel(S_GEOM,4,'</accessor>')
+        self.writel(S_GEOM,3,'</source>')
+
+        self.writel(S_GEOM,3,'<source id="'+splineid+'-intangents">')
+        intangent_values=""
+        for x in handles_in:
+            intangent_values+=" "+str(x)
+        self.writel(S_GEOM,4,'<float_array id="'+splineid+'-intangents-array" count="'+str(len(points))+'">'+intangent_values+'</float_array>')
+        self.writel(S_GEOM,4,'<technique_common>')
+        self.writel(S_GEOM,4,'<accessor source="#'+splineid+'-intangents-array" count="'+str(len(points)/3)+'" stride="3">')
+        self.writel(S_GEOM,5,'<param name="X" type="float"/>')
+        self.writel(S_GEOM,5,'<param name="Y" type="float"/>')
+        self.writel(S_GEOM,5,'<param name="Z" type="float"/>')
+        self.writel(S_GEOM,4,'</accessor>')
+        self.writel(S_GEOM,3,'</source>')
+
+        self.writel(S_GEOM,3,'<source id="'+splineid+'-outtangents">')
+        outtangent_values=""
+        for x in handles_out:
+            outtangent_values+=" "+str(x)
+        self.writel(S_GEOM,4,'<float_array id="'+splineid+'-outtangents-array" count="'+str(len(points))+'">'+outtangent_values+'</float_array>')
+        self.writel(S_GEOM,4,'<technique_common>')
+        self.writel(S_GEOM,4,'<accessor source="#'+splineid+'-outtangents-array" count="'+str(len(points)/3)+'" stride="3">')
+        self.writel(S_GEOM,5,'<param name="X" type="float"/>')
+        self.writel(S_GEOM,5,'<param name="Y" type="float"/>')
+        self.writel(S_GEOM,5,'<param name="Z" type="float"/>')
+        self.writel(S_GEOM,4,'</accessor>')
+        self.writel(S_GEOM,3,'</source>')
+
+        self.writel(S_GEOM,3,'<source id="'+splineid+'-interpolations">')
+        interpolation_values=""
+        for x in interps:
+            interpolation_values+=" "+x
+        self.writel(S_GEOM,4,'<Name_array id="'+splineid+'-interpolations-array" count="'+str(len(interps))+'">'+interpolation_values+'</Name_array>')
+        self.writel(S_GEOM,4,'<technique_common>')
+        self.writel(S_GEOM,4,'<accessor source="#'+splineid+'-interpolations-array" count="'+str(len(interps))+'" stride="1">')
+        self.writel(S_GEOM,5,'<param name="INTERPOLATION" type="name"/>')
+        self.writel(S_GEOM,4,'</accessor>')
+        self.writel(S_GEOM,3,'</source>')
+
+
+        self.writel(S_GEOM,3,'<source id="'+splineid+'-tilts">')
+        tilt_values=""
+        for x in tilts:
+            tilt_values+=" "+str(x)
+        self.writel(S_GEOM,4,'<float_array id="'+splineid+'-tilts-array" count="'+str(len(tilts))+'">'+tilt_values+'</float_array>')
+        self.writel(S_GEOM,4,'<technique_common>')
+        self.writel(S_GEOM,4,'<accessor source="#'+splineid+'-tilts-array" count="'+str(len(tilts))+'" stride="1">')
+        self.writel(S_GEOM,5,'<param name="TILT" type="float"/>')
+        self.writel(S_GEOM,4,'</accessor>')
+        self.writel(S_GEOM,3,'</source>')
+
+        self.writel(S_GEOM,3,'<control_vertices>')
+        self.writel(S_GEOM,4,'<input semantic="POSITION" source="#'+splineid+'-positions"/>')
+        self.writel(S_GEOM,4,'<input semantic="IN_TANGENT" source="#'+splineid+'-intangents"/>')
+        self.writel(S_GEOM,4,'<input semantic="OUT_TANGENT" source="#'+splineid+'-outtangents"/>')
+        self.writel(S_GEOM,4,'<input semantic="INTERPOLATION" source="#'+splineid+'-interpolations"/>')
+        self.writel(S_GEOM,4,'<input semantic="TILT" source="#'+splineid+'-tilts"/>')
+        self.writel(S_GEOM,3,'</control_vertices>')
+
+
+        self.writel(S_GEOM,2,'</spline>')
+        self.writel(S_GEOM,1,'</geometry>')
+
+        return splineid
+
+    def export_curve_node(self,node,il):
+
+        if (node.data==None):
+            return
+        curveid = self.export_curve(node.data)
+
+        self.writel(S_NODES,il,'<instance_geometry url="#'+curveid+'">')
+        self.writel(S_NODES,il,'</instance_geometry>')
+
+
+
+    def export_node(self,node,il):
+
+        if (not self.is_node_valid(node)):
+            return
+
+        self.writel(S_NODES,il,'<node id="'+self.validate_id(node.name)+'" name="'+node.name+'" type="NODE">')
+        il+=1
+
+        self.writel(S_NODES,il,'<matrix sid="transform">'+strmtx(node.matrix_local)+'</matrix>')
+        print("NODE TYPE: "+node.type+" NAME: "+node.name)
+        if (node.type=="MESH"):
+            self.export_mesh_node(node,il)
+        elif (node.type=="CURVE"):
+            self.export_curve_node(node,il)
+        elif (node.type=="ARMATURE"):
+            self.export_armature_node(node,il)
+        elif (node.type=="CAMERA"):
+            self.export_camera_node(node,il)
+        elif (node.type=="LAMP"):
+            self.export_lamp_node(node,il)
+
+        self.valid_nodes.append(node)
+        for x in node.children:
+            self.export_node(x,il)
+        il-=1
+        self.writel(S_NODES,il,'</node>')
+
+    def is_node_valid(self,node):
+        if (not node.type in self.config["object_types"]):
+            return False
+        if (self.config["use_active_layers"]):
+            valid=False
+            for i in range(20):
+                if (node.layers[i] and  self.scene.layers[i]):
+                    valid=True
+                    break
+            if (not valid):
+                return False
+
+        if (self.config["use_export_selected"] and not node.select):
+            return False
+
+        return True
+
+
+    def export_scene(self):
+
+
+        self.writel(S_NODES,0,'<library_visual_scenes>')
+        self.writel(S_NODES,1,'<visual_scene id="'+self.scene_name+'" name="scene">')
+
+        for obj in self.scene.objects:
+            if (obj.parent==None):
+                self.export_node(obj,2)
+
+        self.writel(S_NODES,1,'</visual_scene>')
+        self.writel(S_NODES,0,'</library_visual_scenes>')
+
+    def export_asset(self):
+
+
+        self.writel(S_ASSET,0,'<asset>')
+        # Why is this time stuff mandatory?, no one could care less...
+        self.writel(S_ASSET,1,'<contributor>')
+        self.writel(S_ASSET,2,'<author> Anonymous </author>') #Who made Collada, the FBI ?
+        self.writel(S_ASSET,2,'<authoring_tool> Collada Exporter for Blender 2.6+, by Juan Linietsky (juan@codenix.com) </authoring_tool>') #Who made Collada, the FBI ?
+        self.writel(S_ASSET,1,'</contributor>')
+        self.writel(S_ASSET,1,'<created>'+time.strftime("%Y-%m-%dT%H:%M:%SZ     ")+'</created>')
+        self.writel(S_ASSET,1,'<modified>'+time.strftime("%Y-%m-%dT%H:%M:%SZ")+'</modified>')
+        self.writel(S_ASSET,1,'<unit meter="1.0" name="meter"/>')
+        self.writel(S_ASSET,1,'<up_axis>Z_UP</up_axis>')
+        self.writel(S_ASSET,0,'</asset>')
+
+
+    def export_animation_transform_channel(self,target,transform_keys):
+
+        frame_total=len(transform_keys)
+        anim_id=self.new_id("anim")
+        self.writel(S_ANIM,1,'<animation id="'+anim_id+'">')
+        source_frames = ""
+        source_transforms = ""
+        source_interps = ""
+
+        for k in transform_keys:
+            source_frames += " "+str(k[0])
+            source_transforms += " "+strmtx(k[1])
+            source_interps +=" LINEAR"
+
+
+        # Time Source
+        self.writel(S_ANIM,2,'<source id="'+anim_id+'-input">')
+        self.writel(S_ANIM,3,'<float_array id="'+anim_id+'-input-array" count="'+str(frame_total)+'">'+source_frames+'</float_array>')
+        self.writel(S_ANIM,3,'<technique_common>')
+        self.writel(S_ANIM,4,'<accessor source="'+anim_id+'-input-array" count="'+str(frame_total)+'" stride="1">')
+        self.writel(S_ANIM,5,'<param name="TIME" type="float"/>')
+        self.writel(S_ANIM,4,'</accessor>')
+        self.writel(S_ANIM,3,'</technique_common>')
+        self.writel(S_ANIM,2,'</source>')
+
+        # Transform Source
+        self.writel(S_ANIM,2,'<source id="'+anim_id+'-transform-output">')
+        self.writel(S_ANIM,3,'<float_array id="'+anim_id+'-transform-output-array" count="'+str(frame_total*16)+'">'+source_transforms+'</float_array>')
+        self.writel(S_ANIM,3,'<technique_common>')
+        self.writel(S_ANIM,4,'<accessor source="'+anim_id+'-transform-output-array" count="'+str(frame_total)+'" stride="16">')
+        self.writel(S_ANIM,5,'<param name="TRANSFORM" type="float4x4"/>')
+        self.writel(S_ANIM,4,'</accessor>')
+        self.writel(S_ANIM,3,'</technique_common>')
+        self.writel(S_ANIM,2,'</source>')
+
+        # Interpolation Source
+        self.writel(S_ANIM,2,'<source id="'+anim_id+'-interpolation-output">')
+        self.writel(S_ANIM,3,'<Name_array id="'+anim_id+'-interpolation-output-array" count="'+str(frame_total)+'">'+source_interps+'</Name_array>')
+        self.writel(S_ANIM,3,'<technique_common>')
+        self.writel(S_ANIM,4,'<accessor source="'+anim_id+'-interpolation-output-array" count="'+str(frame_total)+'" stride="1">')
+        self.writel(S_ANIM,5,'<param name="INTERPOLATION" type="Name"/>')
+        self.writel(S_ANIM,4,'</accessor>')
+        self.writel(S_ANIM,3,'</technique_common>')
+        self.writel(S_ANIM,2,'</source>')
+
+        self.writel(S_ANIM,2,'<sampler id="'+anim_id+'-sampler">')
+        self.writel(S_ANIM,3,'<input semantic="INPUT" source="#'+anim_id+'-input"/>')
+        self.writel(S_ANIM,3,'<input semantic="OUTPUT" source="#'+anim_id+'-transform-output"/>')
+        self.writel(S_ANIM,3,'<input semantic="INTERPOLATION" source="#'+anim_id+'-interpolation-output"/>')
+        self.writel(S_ANIM,2,'</sampler>')
+        self.writel(S_ANIM,2,'<channel source="#'+anim_id+'-sampler" target="'+target+'/transform"/>')
+        self.writel(S_ANIM,1,'</animation>')
+
+        return [anim_id]
+
+
+    def export_animation(self,start,end):
+
+        # Blender -> Collada frames needs a little work
+        # Collada starts from 0, blender usually from 1
+        # The last frame must be included also
+
+        frame_len = 1.0 / self.scene.render.fps
+        frame_total = end - start + 1
+        frame_sub = 0
+        if (start>0):
+            frame_sub=start*frame_len
+
+        tcn = []
+        xform_cache={}
+        # Change frames first, export objects last
+        # This improves performance enormously
+
+        print("anim from: "+str(start)+" to "+str(end))
+        for t in range(start,end+1):
+            self.scene.frame_set(t)
+            key = t * frame_len - frame_sub
+#           print("Export Anim Frame "+str(t)+"/"+str(self.scene.frame_end+1))
+
+            for node in self.scene.objects:
+
+                if (not node in self.valid_nodes):
+                    continue
+
+                if (node.type=="MESH" and node.parent and node.parent.type=="ARMATURE"):
+                    continue #In Collada, nodes that have skin modifier must not export animation, animate the skin instead.
+
+                if (len(node.constraints)>0 or node.animation_data!=None):
+                    #If the node has constraints, or animation data, then export a sampled animation track
+                    name=self.validate_id(node.name)
+                    if (not (name in xform_cache)):
+                        xform_cache[name]=[]
+
+                    mtx = node.matrix_world.copy()
+                    if (node.parent):
+                        mtx = node.parent.matrix_world.inverted() * mtx
+
+                    xform_cache[name].append( (key,mtx) )
+
+                if (node.type=="ARMATURE"):
+                    #All bones exported for now
+                    for bone in node.data.bones:
+
+                        bone_name=self.skeleton_info[node]["bone_ids"][bone]
+
+                        if (not (bone_name in xform_cache)):
+                            xform_cache[bone_name]=[]
+
+                        posebone = node.pose.bones[bone.name]
+                        parent_posebone=None
+
+                        mtx = posebone.matrix.copy()
+                        if (bone.parent):
+                            parent_posebone=node.pose.bones[bone.parent.name]
+                            mtx = parent_posebone.matrix.inverted() * mtx
+
+
+                        xform_cache[bone_name].append((key, mtx))
+
+
+        # export animation xml
+        for nid in xform_cache:
+            tcn+=self.export_animation_transform_channel(nid,xform_cache[nid])
+
+        return tcn
+
+    def export_animations(self):
+
+        self.writel(S_ANIM,0,'<library_animations>')
+
+
+
+        if (self.config["use_anim_action_all"] and len(self.skeletons)):
+
+            self.writel(S_ANIM_CLIPS,0,'<library_animation_clips>')
+
+            for x in bpy.data.actions[:]:
+                if x in self.action_constraints:
+                    continue
+                for y in self.skeletons:
+                    if (y.animation_data):
+                        y.animation_data.action=x;
+
+
+                tcn = self.export_animation(int(x.frame_range[0]),int(x.frame_range[1]))
+                framelen=(1.0/self.scene.render.fps)
+                start = x.frame_range[0]*framelen
+                end = x.frame_range[1]*framelen
+                print("Export anim: "+x.name)
+                self.writel(S_ANIM_CLIPS,1,'<animation_clip name="'+x.name+'" start="'+str(start)+'" end="'+str(end)+'">')
+                for z in tcn:
+                    self.writel(S_ANIM_CLIPS,2,'<instance_animation url="#'+z+'">')
+                self.writel(S_ANIM_CLIPS,1,'</animation_clip>')
+
+
+            self.writel(S_ANIM_CLIPS,0,'</library_animation_clips>')
+
+        else:
+            self.export_animation(self.scene.frame_start,self.scene.frame_end)
+
+        self.writel(S_ANIM,0,'</library_animations>')
+
+    def export(self):
+
+        self.writel(S_GEOM,0,'<library_geometries>')
+        self.writel(S_CONT,0,'<library_controllers>')
+        self.writel(S_CAMS,0,'<library_cameras>')
+        self.writel(S_LAMPS,0,'<library_lights>')
+        self.writel(S_IMGS,0,'<library_images>')
+        self.writel(S_MATS,0,'<library_materials>')
+        self.writel(S_FX,0,'<library_effects>')
+
+
+        self.skeletons=[]
+        self.action_constraints=[]
+        self.export_asset()
+        self.export_scene()
+
+        self.writel(S_GEOM,0,'</library_geometries>')
+        self.writel(S_CONT,0,'</library_controllers>')
+        self.writel(S_CAMS,0,'</library_cameras>')
+        self.writel(S_LAMPS,0,'</library_lights>')
+        self.writel(S_IMGS,0,'</library_images>')
+        self.writel(S_MATS,0,'</library_materials>')
+        self.writel(S_FX,0,'</library_effects>')
+
+        if (self.config["use_anim"]):
+            self.export_animations()
+
+        try:
+            f = open(self.path,"wb")
+        except:
+            return False
+
+        f.write(bytes('<?xml version="1.0" encoding="utf-8"?>\n',"UTF-8"))
+        f.write(bytes('<COLLADA xmlns="http://www.collada.org/2005/11/COLLADASchema" version="1.4.1">\n',"UTF-8"))
+
+
+        s=[]
+        for x in self.sections.keys():
+            s.append(x)
+        s.sort()
+        for x in s:
+            for l in self.sections[x]:
+                f.write(bytes(l+"\n","UTF-8"))
+
+        f.write(bytes('<scene>\n',"UTF-8"))
+        f.write(bytes('\t<instance_visual_scene url="#'+self.scene_name+'" />\n',"UTF-8"))
+        f.write(bytes('</scene>\n',"UTF-8"))
+        f.write(bytes('</COLLADA>\n',"UTF-8"))
+        return True
+
+    def __init__(self,path,kwargs):
+        self.scene=bpy.context.scene
+        self.last_id=0
+        self.scene_name=self.new_id("scene")
+        self.sections={}
+        self.path=path
+        self.mesh_cache={}
+        self.curve_cache={}
+        self.material_cache={}
+        self.image_cache={}
+        self.skeleton_info={}
+        self.config=kwargs
+        self.valid_nodes=[]
+
+
+def save(operator, context,
+         filepath="",
+         use_selection=False,
+         **kwargs
+         ):
+
+    exp = DaeExporter(filepath, kwargs)
+    exp.export()
+
+    return {'FINISHED'}  # so the script wont run after we have batch exported.
+