Initial Commit

1 files changed, 1883 insertions, 0 deletions

diff --git a/3D/fbx/fbx2JSON.py b/3D/fbx/fbx2JSON.py
new file mode 100644
index 0000000..f0597ff
--- /dev/null
+++ b/3D/fbx/fbx2JSON.py
@@ -0,0 +1,1883 @@
+# @author zfedoran / http://github.com/zfedoran
+
+import os
+import sys
+import math
+import operator
+
+# #####################################################
+# Globals
+# #####################################################
+option_triangulate = True
+option_textures = True
+option_prefix = True
+option_geometry = False
+option_default_camera = False
+option_default_light = False
+
+converter = None
+global_up_vector = None
+
+# #####################################################
+# Templates
+# #####################################################
+def Vector2String(v, no_brackets = False):
+    if no_brackets:
+        return '%g,%g' % (v[0], v[1])
+    else:
+        return '[ %g, %g ]' % (v[0], v[1])
+
+def Vector3String(v, no_brackets = False):
+    if no_brackets:
+        return '%g,%g,%g' % (v[0], v[1], v[2])
+    else:
+        return '[ %g, %g, %g ]' % (v[0], v[1], v[2])
+
+def ColorString(c, no_brackets = False):
+    if no_brackets:
+        return '%g, %g, %g' % (c[0], c[1], c[2])
+    else:
+        return '[ %g, %g, %g ]' % (c[0], c[1], c[2])
+
+def LabelString(s):
+    return '"%s"' % s
+
+def ArrayString(s):
+    return '[ %s ]' % s
+
+def PaddingString(n):
+    output = ""
+    for i in range(n):
+        output += "\t"
+    return output
+        
+def BoolString(value):
+    if value:
+        return "true"
+    return "false"
+
+# #####################################################
+# Helpers
+# #####################################################
+def getObjectName(o, force_prefix = False): 
+    if not o:
+        return ""  
+    prefix = ""
+    if option_prefix or force_prefix:
+        prefix = "Object_%s_" % o.GetUniqueID()
+    return prefix + o.GetName()
+      
+def getGeometryName(g, force_prefix = False):
+    prefix = ""
+    if option_prefix or force_prefix:
+        prefix = "Geometry_%s_" % g.GetUniqueID()
+    return prefix + g.GetName()
+
+def getEmbedName(e, force_prefix = False):
+    prefix = ""
+    if option_prefix or force_prefix:
+        prefix = "Embed_%s_" % e.GetUniqueID()
+    return prefix + e.GetName()
+
+def getMaterialName(m, force_prefix = False):
+    prefix = ""
+    if option_prefix or force_prefix:
+        prefix = "Material_%s_" % m.GetUniqueID()
+    return prefix + m.GetName()
+
+def getTextureName(t, force_prefix = False):
+    texture_file = t.GetFileName()
+    texture_id = os.path.splitext(os.path.basename(texture_file))[0]
+    prefix = ""
+    if option_prefix or force_prefix:
+        prefix = "Texture_%s_" % t.GetUniqueID()
+    return prefix + texture_id
+
+def getFogName(f, force_prefix = False):
+    prefix = ""
+    if option_prefix or force_prefix:
+        prefix = "Fog_%s_" % f.GetUniqueID()
+    return prefix + f.GetName()
+
+def getObjectVisible(n):
+    return BoolString(True)
+    
+def getRadians(v):
+    return ((v[0]*math.pi)/180, (v[1]*math.pi)/180, (v[2]*math.pi)/180)
+
+def getHex(c):
+    color = (int(c[0]*255) << 16) + (int(c[1]*255) << 8) + int(c[2]*255)
+    return color
+
+def setBit(value, position, on):
+    if on:
+        mask = 1 << position
+        return (value | mask)
+    else:
+        mask = ~(1 << position)
+        return (value & mask)
+
+def convert_fbx_color(color):
+    return [color.mRed, color.mGreen, color.mBlue, color.mAlpha]
+    
+def convert_fbx_vec2(v):
+    return [v[0], v[1]]
+
+def convert_fbx_vec3(v):
+    return [v[0], v[1], v[2]]
+    
+def generate_uvs(uv_layers):
+    layers = []
+    for uvs in uv_layers:
+        layer = ",".join(Vector2String(n, True) for n in uvs)
+        layers.append(layer)
+
+    return ",".join("[%s]" % n for n in layers)
+
+def generateMultiLineString(lines, separator, padding):
+    cleanLines = []
+    for i in range(len(lines)):
+        line = lines[i]
+        line = PaddingString(padding) + line
+        cleanLines.append(line)
+    return separator.join(cleanLines)
+
+def get_up_vector(scene):
+    global_settings = scene.GetGlobalSettings()
+    axis_system = global_settings.GetAxisSystem()
+    up_vector = axis_system.GetUpVector()
+    tmp = [0,0,0]
+    tmp[up_vector[0] - 1] = up_vector[1] * 1
+    return FbxVector4(tmp[0], tmp[1], tmp[2], 1)
+
+def generate_bounding_box(vertices):
+    minx = 0
+    miny = 0
+    minz = 0
+    maxx = 0
+    maxy = 0
+    maxz = 0
+
+    for vertex in vertices:
+        if vertex[0] < minx:
+            minx = vertex[0]
+        if vertex[1] < miny:
+            miny = vertex[1]
+        if vertex[2] < minz:
+            minz = vertex[2]
+
+        if vertex[0] > maxx:
+            maxx = vertex[0]
+        if vertex[1] > maxy:
+            maxy = vertex[1]
+        if vertex[2] > maxz:
+            maxz = vertex[2]
+
+    return [minx, miny, minz], [maxx, maxy, maxz]
+
+    
+# #####################################################
+# Generate - Triangles 
+# #####################################################
+def triangulate_node_hierarchy(node):
+    node_attribute = node.GetNodeAttribute();
+
+    if node_attribute:
+        if node_attribute.GetAttributeType() == FbxNodeAttribute.eMesh or \
+           node_attribute.GetAttributeType() == FbxNodeAttribute.eNurbs or \
+           node_attribute.GetAttributeType() == FbxNodeAttribute.eNurbsSurface or \
+           node_attribute.GetAttributeType() == FbxNodeAttribute.ePatch:
+            converter.TriangulateInPlace(node);
+        
+        child_count = node.GetChildCount()
+        for i in range(child_count):
+            triangulate_node_hierarchy(node.GetChild(i))
+
+def triangulate_scene(scene):
+    node = scene.GetRootNode()
+    if node:
+        for i in range(node.GetChildCount()):
+            triangulate_node_hierarchy(node.GetChild(i))
+
+# #####################################################
+# Generate - Material String 
+# #####################################################
+def generate_texture_bindings(material_property, texture_list):
+    binding_types = {
+    "DiffuseColor": "map", "DiffuseFactor": "diffuseFactor", "EmissiveColor": "emissiveMap", 
+    "EmissiveFactor": "emissiveFactor", "AmbientColor": "ambientMap", "AmbientFactor": "ambientFactor", 
+    "SpecularColor": "specularMap", "SpecularFactor": "specularFactor", "ShininessExponent": "shininessExponent",
+    "NormalMap": "normalMap", "Bump": "bumpMap", "TransparentColor": "transparentMap", 
+    "TransparencyFactor": "transparentFactor", "ReflectionColor": "reflectionMap", 
+    "ReflectionFactor": "reflectionFactor", "DisplacementColor": "displacementMap", 
+    "VectorDisplacementColor": "vectorDisplacementMap"
+    }
+
+    if material_property.IsValid():
+        #Here we have to check if it's layeredtextures, or just textures:
+        layered_texture_count = material_property.GetSrcObjectCount(FbxLayeredTexture.ClassId)
+        if layered_texture_count > 0:
+            for j in range(layered_texture_count):
+                layered_texture = material_property.GetSrcObject(FbxLayeredTexture.ClassId, j)
+                texture_count = layered_texture.GetSrcObjectCount(FbxTexture.ClassId)
+                for k in range(texture_count):
+                    texture = layered_texture.GetSrcObject(FbxTexture.ClassId,k)
+                    if texture:
+                        texture_id = getTextureName(texture, True) 
+                        texture_binding = '		"%s": "%s",' % (binding_types[str(material_property.GetName())], texture_id)
+                        texture_list.append(texture_binding)
+        else:
+            # no layered texture simply get on the property
+            texture_count = material_property.GetSrcObjectCount(FbxTexture.ClassId)
+            for j in range(texture_count):
+                texture = material_property.GetSrcObject(FbxTexture.ClassId,j)
+                if texture:
+                    texture_id = getTextureName(texture, True) 
+                    texture_binding = '		"%s": "%s",' % (binding_types[str(material_property.GetName())], texture_id)
+                    texture_list.append(texture_binding)
+
+def generate_material_string(material):
+    #Get the implementation to see if it's a hardware shader.
+    implementation = GetImplementation(material, "ImplementationHLSL")
+    implementation_type = "HLSL"
+    if not implementation:
+        implementation = GetImplementation(material, "ImplementationCGFX")
+        implementation_type = "CGFX"
+
+    output = []
+
+    if implementation:
+        # This material is a hardware shader, skip it
+        print("Shader materials are not supported")
+        return ''
+        
+    elif material.GetClassId().Is(FbxSurfaceLambert.ClassId):
+
+        ambient   = str(getHex(material.Ambient.Get()))
+        diffuse   = str(getHex(material.Diffuse.Get()))
+        emissive  = str(getHex(material.Emissive.Get()))
+        opacity   = 1.0 - material.TransparencyFactor.Get()
+        opacity   = 1.0 if opacity == 0 else opacity
+        opacity   = str(opacity)
+        transparent = BoolString(False)
+        reflectivity = "1"
+
+        output = [
+
+        '\t' + LabelString( getMaterialName( material ) ) + ': {',
+        '	"type"    : "MeshLambertMaterial",',
+        '	"parameters"  : {',
+        '		"color"  : ' 	  + diffuse + ',',
+        '		"ambient"  : ' 	+ ambient + ',',
+        '		"emissive"  : ' + emissive + ',',
+        '		"reflectivity"  : ' + reflectivity + ',',
+        '		"transparent" : '   + transparent + ',',
+        '		"opacity" : ' 	    + opacity + ',',
+
+        ]
+
+    elif material.GetClassId().Is(FbxSurfacePhong.ClassId):
+
+        ambient   = str(getHex(material.Ambient.Get()))
+        diffuse   = str(getHex(material.Diffuse.Get()))
+        emissive  = str(getHex(material.Emissive.Get()))
+        specular  = str(getHex(material.Specular.Get()))
+        opacity   = 1.0 - material.TransparencyFactor.Get()
+        opacity   = 1.0 if opacity == 0 else opacity
+        opacity   = str(opacity)
+        shininess = str(material.Shininess.Get())
+        transparent = BoolString(False)
+        reflectivity = "1"
+        bumpScale = "1"
+
+        output = [
+
+        '\t' + LabelString( getMaterialName( material ) ) + ': {',
+        '	"type"    : "MeshPhongMaterial",',
+        '	"parameters"  : {',
+        '		"color"  : ' 	  + diffuse + ',',
+        '		"ambient"  : ' 	+ ambient + ',',
+        '		"emissive"  : ' + emissive + ',',
+        '		"specular"  : ' + specular + ',',
+        '		"shininess" : ' + shininess + ',',
+        '		"bumpScale"  : '    + bumpScale + ',',
+        '		"reflectivity"  : ' + reflectivity + ',',
+        '		"transparent" : '   + transparent + ',',
+        '		"opacity" : ' 	+ opacity + ',',
+
+        ]
+
+    else:
+      print("Unknown type of Material")
+      return ''
+
+    if option_textures:
+        texture_list = []
+        texture_count = FbxLayerElement.sTypeTextureCount()
+        for texture_index in range(texture_count):
+            material_property = material.FindProperty(FbxLayerElement.sTextureChannelNames(texture_index))
+            generate_texture_bindings(material_property, texture_list)
+
+        output += texture_list
+
+    wireframe = BoolString(False)
+    wireframeLinewidth = "1"
+
+    output.append('		"wireframe" : ' + wireframe + ',')
+    output.append('		"wireframeLinewidth" : ' + wireframeLinewidth)
+    output.append('	}')
+    output.append('}')
+
+    return generateMultiLineString( output, '\n\t\t', 0 )
+
+def generate_proxy_material_string(node, material_names):
+    
+    output = [
+
+    '\t' + LabelString( getMaterialName( node, True ) ) + ': {',
+    '	"type"    : "MeshFaceMaterial",',
+    '	"parameters"  : {',
+    '		"materials"  : ' + ArrayString( ",".join(LabelString(m) for m in material_names) ),
+    '	}',
+    '}'
+
+    ]
+
+    return generateMultiLineString( output, '\n\t\t', 0 )
+
+# #####################################################
+# Parse - Materials 
+# #####################################################
+def extract_materials_from_node(node, material_list):
+    name = node.GetName()
+    mesh = node.GetNodeAttribute()
+
+    node = None
+    if mesh:
+        node = mesh.GetNode()
+        if node:
+            material_count = node.GetMaterialCount()
+    
+    material_names = []
+    for l in range(mesh.GetLayerCount()):
+        materials = mesh.GetLayer(l).GetMaterials()
+        if materials:
+            if materials.GetReferenceMode() == FbxLayerElement.eIndex:
+                #Materials are in an undefined external table
+                continue
+            for i in range(material_count):
+                material = node.GetMaterial(i)
+                material_names.append(getMaterialName(material))
+                material_string = generate_material_string(material)
+                material_list.append(material_string)
+
+    if material_count > 1:
+      proxy_material = generate_proxy_material_string(node, material_names)
+      material_list.append(proxy_material)
+
+
+def generate_materials_from_hierarchy(node, material_list):
+    if node.GetNodeAttribute() == None:
+        pass
+    else:
+        attribute_type = (node.GetNodeAttribute().GetAttributeType())
+        if attribute_type == FbxNodeAttribute.eMesh:
+            extract_materials_from_node(node, material_list)
+    for i in range(node.GetChildCount()):
+        generate_materials_from_hierarchy(node.GetChild(i), material_list)
+
+def generate_material_list(scene):
+    material_list = []
+    node = scene.GetRootNode()
+    if node:
+        for i in range(node.GetChildCount()):
+            generate_materials_from_hierarchy(node.GetChild(i), material_list)
+    return material_list
+
+# #####################################################
+# Generate - Texture String 
+# #####################################################
+def generate_texture_string(texture):
+
+    #TODO: extract more texture properties
+    wrap_u = texture.GetWrapModeU()
+    wrap_v = texture.GetWrapModeV()
+    offset = texture.GetUVTranslation()
+
+    output = [
+
+    '\t' + LabelString( getTextureName( texture, True ) ) + ': {',
+    '	"url"    : "' + texture.GetFileName() + '",',
+    '	"repeat" : ' + Vector2String( (1,1) ) + ',',
+    '	"offset" : ' + Vector2String( texture.GetUVTranslation() ) + ',',
+    '	"magFilter" : ' + LabelString( "LinearFilter" ) + ',',
+    '	"minFilter" : ' + LabelString( "LinearMipMapLinearFilter" ) + ',',
+    '	"anisotropy" : ' + BoolString( True ),
+    '}'
+
+    ]
+
+    return generateMultiLineString( output, '\n\t\t', 0 )
+
+# #####################################################
+# Parse - Textures 
+# #####################################################
+def extract_material_textures(material_property, texture_list):
+    if material_property.IsValid():
+        #Here we have to check if it's layeredtextures, or just textures:
+        layered_texture_count = material_property.GetSrcObjectCount(FbxLayeredTexture.ClassId)
+        if layered_texture_count > 0:
+            for j in range(layered_texture_count):
+                layered_texture = material_property.GetSrcObject(FbxLayeredTexture.ClassId, j)
+                texture_count = layered_texture.GetSrcObjectCount(FbxTexture.ClassId)
+                for k in range(texture_count):
+                    texture = layered_texture.GetSrcObject(FbxTexture.ClassId,k)
+                    if texture:
+                        texture_string = generate_texture_string(texture)
+                        texture_list.append(texture_string)
+        else:
+            # no layered texture simply get on the property
+            texture_count = material_property.GetSrcObjectCount(FbxTexture.ClassId)
+            for j in range(texture_count):
+                texture = material_property.GetSrcObject(FbxTexture.ClassId,j)
+                if texture:
+                    texture_string = generate_texture_string(texture)
+                    texture_list.append(texture_string)
+
+def extract_textures_from_node(node, texture_list):
+    name = node.GetName()
+    mesh = node.GetNodeAttribute()
+    
+    #for all materials attached to this mesh
+    material_count = mesh.GetNode().GetSrcObjectCount(FbxSurfaceMaterial.ClassId)
+    for material_index in range(material_count):
+        material = mesh.GetNode().GetSrcObject(FbxSurfaceMaterial.ClassId, material_index)
+
+        #go through all the possible textures types
+        if material:            
+            texture_count = FbxLayerElement.sTypeTextureCount()
+            for texture_index in range(texture_count):
+                material_property = material.FindProperty(FbxLayerElement.sTextureChannelNames(texture_index))
+                extract_material_textures(material_property, texture_list)
+
+def generate_textures_from_hierarchy(node, texture_list):
+    if node.GetNodeAttribute() == None:
+        pass
+    else:
+        attribute_type = (node.GetNodeAttribute().GetAttributeType())
+        if attribute_type == FbxNodeAttribute.eMesh:
+            extract_textures_from_node(node, texture_list)
+    for i in range(node.GetChildCount()):
+        generate_textures_from_hierarchy(node.GetChild(i), texture_list)
+
+def generate_texture_list(scene):
+    if not option_textures:
+        return []
+
+    texture_list = []
+    node = scene.GetRootNode()
+    if node:
+        for i in range(node.GetChildCount()):
+            generate_textures_from_hierarchy(node.GetChild(i), texture_list)
+    return texture_list
+
+# #####################################################
+# Extract - Fbx Mesh data
+# #####################################################
+def extract_fbx_vertex_positions(mesh):
+    control_points_count = mesh.GetControlPointsCount()
+    control_points = mesh.GetControlPoints()
+
+    positions = []
+    for i in range(control_points_count):
+        positions.append(convert_fbx_vec3(control_points[i]))
+
+    node = mesh.GetNode()
+    if node and option_geometry:
+        # FbxMeshes are local to their node, we need the vertices in global space
+        # when scene nodes are not exported
+        transform = node.EvaluateGlobalTransform()
+        transform = FbxMatrix(transform)
+
+        for i in range(len(positions)):
+            v = positions[i]
+            position = FbxVector4(v[0], v[1], v[2])
+            position = transform.MultNormalize(position)
+            positions[i] = convert_fbx_vec3(position)
+
+    return positions
+
+def extract_fbx_vertex_normals(mesh):
+#   eNone             The mapping is undetermined.
+#   eByControlPoint   There will be one mapping coordinate for each surface control point/vertex.
+#   eByPolygonVertex  There will be one mapping coordinate for each vertex, for every polygon of which it is a part. This means that a vertex will have as many mapping coordinates as polygons of which it is a part.
+#   eByPolygon        There can be only one mapping coordinate for the whole polygon.
+#   eByEdge           There will be one mapping coordinate for each unique edge in the mesh. This is meant to be used with smoothing layer elements.
+#   eAllSame          There can be only one mapping coordinate for the whole surface.
+
+    layered_normal_indices = []
+    layered_normal_values = []
+
+    poly_count = mesh.GetPolygonCount()
+    control_points = mesh.GetControlPoints() 
+
+    for l in range(mesh.GetLayerCount()):
+        mesh_normals = mesh.GetLayer(l).GetNormals()
+        if not mesh_normals:
+            continue
+          
+        normals_array = mesh_normals.GetDirectArray()
+        normals_count = normals_array.GetCount()
+  
+        if normals_count == 0:
+            continue
+
+        normal_indices = []
+        normal_values = []
+
+        # values
+        for i in range(normals_count):
+            normal = convert_fbx_vec3(normals_array.GetAt(i))
+            normal_values.append(normal)
+
+        node = mesh.GetNode()
+        if node and option_geometry:
+            # FbxMeshes are local to their node, we need the normals in global space
+            # when scene nodes are not exported
+            transform = node.EvaluateGlobalTransform()
+            transform.SetT(FbxVector4(0,0,0,0))
+            transform = FbxMatrix(transform)
+
+            for i in range(len(normal_values)):
+                n = normal_values[i]
+                normal = FbxVector4(n[0], n[1], n[2])
+                normal = transform.MultNormalize(normal)
+                normal_values[i] = convert_fbx_vec3(normal)
+
+        # indices
+        vertexId = 0
+        for p in range(poly_count):
+            poly_size = mesh.GetPolygonSize(p)
+            poly_normals = []
+
+            for v in range(poly_size):
+                control_point_index = mesh.GetPolygonVertex(p, v)
+
+                if mesh_normals.GetMappingMode() == FbxLayerElement.eByControlPoint:
+                    if mesh_normals.GetReferenceMode() == FbxLayerElement.eDirect:
+                        poly_normals.append(control_point_index)
+                    elif mesh_normals.GetReferenceMode() == FbxLayerElement.eIndexToDirect:
+                        index = mesh_normals.GetIndexArray().GetAt(control_point_index)
+                        poly_normals.append(index)
+                elif mesh_normals.GetMappingMode() == FbxLayerElement.eByPolygonVertex:
+                    if mesh_normals.GetReferenceMode() == FbxLayerElement.eDirect:
+                        poly_normals.append(vertexId)
+                    elif mesh_normals.GetReferenceMode() == FbxLayerElement.eIndexToDirect:
+                        index = mesh_normals.GetIndexArray().GetAt(vertexId)
+                        poly_normals.append(index)
+                elif mesh_normals.GetMappingMode() == FbxLayerElement.eByPolygon or \
+                     mesh_normals.GetMappingMode() ==  FbxLayerElement.eAllSame or \
+                     mesh_normals.GetMappingMode() ==  FbxLayerElement.eNone:       
+                    print("unsupported normal mapping mode for polygon vertex")
+
+                vertexId += 1
+            normal_indices.append(poly_normals)
+
+        layered_normal_values.append(normal_values)
+        layered_normal_indices.append(normal_indices)
+
+    normal_values = []
+    normal_indices = []
+
+    # Three.js only supports one layer of normals
+    if len(layered_normal_values) > 0:
+        normal_values = layered_normal_values[0]
+        normal_indices = layered_normal_indices[0]
+
+    return normal_values, normal_indices
+
+def extract_fbx_vertex_colors(mesh):
+#   eNone             The mapping is undetermined.
+#   eByControlPoint   There will be one mapping coordinate for each surface control point/vertex.
+#   eByPolygonVertex  There will be one mapping coordinate for each vertex, for every polygon of which it is a part. This means that a vertex will have as many mapping coordinates as polygons of which it is a part.
+#   eByPolygon        There can be only one mapping coordinate for the whole polygon.
+#   eByEdge           There will be one mapping coordinate for each unique edge in the mesh. This is meant to be used with smoothing layer elements.
+#   eAllSame          There can be only one mapping coordinate for the whole surface.
+
+    layered_color_indices = []
+    layered_color_values = []
+
+    poly_count = mesh.GetPolygonCount()
+    control_points = mesh.GetControlPoints() 
+
+    for l in range(mesh.GetLayerCount()):
+        mesh_colors = mesh.GetLayer(l).GetVertexColors()
+        if not mesh_colors:
+            continue
+          
+        colors_array = mesh_colors.GetDirectArray()
+        colors_count = colors_array.GetCount()
+  
+        if colors_count == 0:
+            continue
+
+        color_indices = []
+        color_values = []
+
+        # values
+        for i in range(colors_count):
+            color = convert_fbx_color(colors_array.GetAt(i))
+            color_values.append(color)
+
+        # indices
+        vertexId = 0
+        for p in range(poly_count):
+            poly_size = mesh.GetPolygonSize(p)
+            poly_colors = []
+
+            for v in range(poly_size):
+                control_point_index = mesh.GetPolygonVertex(p, v)
+
+                if mesh_colors.GetMappingMode() == FbxLayerElement.eByControlPoint:
+                    if mesh_colors.GetReferenceMode() == FbxLayerElement.eDirect:
+                        poly_colors.append(control_point_index)
+                    elif mesh_colors.GetReferenceMode() == FbxLayerElement.eIndexToDirect:
+                        index = mesh_colors.GetIndexArray().GetAt(control_point_index)
+                        poly_colors.append(index)
+                elif mesh_colors.GetMappingMode() == FbxLayerElement.eByPolygonVertex:
+                    if mesh_colors.GetReferenceMode() == FbxLayerElement.eDirect:
+                        poly_colors.append(vertexId)
+                    elif mesh_colors.GetReferenceMode() == FbxLayerElement.eIndexToDirect:
+                        index = mesh_colors.GetIndexArray().GetAt(vertexId)
+                        poly_colors.append(index)
+                elif mesh_colors.GetMappingMode() == FbxLayerElement.eByPolygon or \
+                     mesh_colors.GetMappingMode() ==  FbxLayerElement.eAllSame or \
+                     mesh_colors.GetMappingMode() ==  FbxLayerElement.eNone:       
+                    print("unsupported color mapping mode for polygon vertex")
+
+                vertexId += 1
+            color_indices.append(poly_colors)
+
+    color_values = []
+    color_indices = []
+
+    # Three.js only supports one layer of colors
+    if len(layered_color_values) > 0:
+        color_values = layered_color_values[0]
+        color_indices = layered_color_indices[0]
+
+    return color_values, color_indices
+
+def extract_fbx_vertex_uvs(mesh):
+#   eNone             The mapping is undetermined.
+#   eByControlPoint   There will be one mapping coordinate for each surface control point/vertex.
+#   eByPolygonVertex  There will be one mapping coordinate for each vertex, for every polygon of which it is a part. This means that a vertex will have as many mapping coordinates as polygons of which it is a part.
+#   eByPolygon        There can be only one mapping coordinate for the whole polygon.
+#   eByEdge           There will be one mapping coordinate for each unique edge in the mesh. This is meant to be used with smoothing layer elements.
+#   eAllSame          There can be only one mapping coordinate for the whole surface.
+
+    layered_uv_indices = []
+    layered_uv_values = []
+
+    poly_count = mesh.GetPolygonCount()
+    control_points = mesh.GetControlPoints() 
+
+    for l in range(mesh.GetLayerCount()):
+        mesh_uvs = mesh.GetLayer(l).GetUVs()
+        if not mesh_uvs:
+            continue
+          
+        uvs_array = mesh_uvs.GetDirectArray()
+        uvs_count = uvs_array.GetCount()
+  
+        if uvs_count == 0:
+            continue
+
+        uv_indices = []
+        uv_values = []
+
+        # values
+        for i in range(uvs_count):
+            uv = convert_fbx_vec2(uvs_array.GetAt(i))
+            uv_values.append(uv)
+
+        # indices
+        vertexId = 0
+        for p in range(poly_count):
+            poly_size = mesh.GetPolygonSize(p)
+            poly_uvs = []
+
+            for v in range(poly_size):
+                control_point_index = mesh.GetPolygonVertex(p, v)
+
+                if mesh_uvs.GetMappingMode() == FbxLayerElement.eByControlPoint:
+                    if mesh_uvs.GetReferenceMode() == FbxLayerElement.eDirect:
+                        poly_uvs.append(control_point_index)
+                    elif mesh_uvs.GetReferenceMode() == FbxLayerElement.eIndexToDirect:
+                        index = mesh_uvs.GetIndexArray().GetAt(control_point_index)
+                        poly_uvs.append(index)
+                elif mesh_uvs.GetMappingMode() == FbxLayerElement.eByPolygonVertex:
+                    uv_texture_index = mesh.GetTextureUVIndex(p, v)
+                    if mesh_uvs.GetReferenceMode() == FbxLayerElement.eDirect or \
+                       mesh_uvs.GetReferenceMode() == FbxLayerElement.eIndexToDirect:
+                        poly_uvs.append(uv_texture_index)
+                elif mesh_uvs.GetMappingMode() == FbxLayerElement.eByPolygon or \
+                     mesh_uvs.GetMappingMode() ==  FbxLayerElement.eAllSame or \
+                     mesh_uvs.GetMappingMode() ==  FbxLayerElement.eNone:       
+                    print("unsupported uv mapping mode for polygon vertex")
+
+                vertexId += 1
+            uv_indices.append(poly_uvs)
+
+        layered_uv_values.append(uv_values)
+        layered_uv_indices.append(uv_indices)
+
+    return layered_uv_values, layered_uv_indices
+
+# #####################################################
+# Generate - Mesh String (for scene output) 
+# #####################################################
+def generate_mesh_string_for_scene_output(node):
+    mesh = node.GetNodeAttribute()
+    mesh_list = [ mesh ]
+
+    vertices, vertex_offsets = process_mesh_vertices(mesh_list)
+    materials, material_offsets = process_mesh_materials(mesh_list)
+
+    normals_to_indices = generate_unique_normals_dictionary(mesh_list)
+    colors_to_indices = generate_unique_colors_dictionary(mesh_list)
+    uvs_to_indices_list = generate_unique_uvs_dictionary_layers(mesh_list)
+    
+    normal_values = generate_normals_from_dictionary(normals_to_indices)
+    color_values = generate_colors_from_dictionary(colors_to_indices)
+    uv_values = generate_uvs_from_dictionary_layers(uvs_to_indices_list)
+
+    faces = process_mesh_polygons(mesh_list, 
+                normals_to_indices, 
+                colors_to_indices, 
+                uvs_to_indices_list, 
+                vertex_offsets, 
+                material_offsets)
+
+    nuvs = []
+    for layer_index, uvs in enumerate(uv_values):
+        nuvs.append(str(len(uvs)))
+
+    nvertices = len(vertices)
+    nnormals = len(normal_values)
+    ncolors = len(color_values)
+    nfaces = len(faces)
+    nuvs = ",".join(nuvs)
+    
+    aabb_min, aabb_max = generate_bounding_box(vertices)
+    aabb_min = ",".join(str(f) for f in aabb_min)
+    aabb_max = ",".join(str(f) for f in aabb_max)
+
+    vertices = ",".join(Vector3String(v, True) for v in vertices)
+    normals  = ",".join(Vector3String(v, True) for v in normal_values)
+    colors   = ",".join(Vector3String(v, True) for v in color_values)
+    faces    = ",".join(faces)
+    uvs      = generate_uvs(uv_values)
+
+    output = [
+
+    '\t' + LabelString( getEmbedName( node, True ) ) + ' : {',
+    '	"metadata"  : {',
+    '		"vertices" : ' + str(nvertices) + ',',
+    '		"normals" : ' + str(nnormals) + ',',
+    '		"colors" : ' + str(ncolors) + ',',
+    '		"faces" : ' + str(nfaces) + ',',
+    '		"uvs" : ' + ArrayString(nuvs),
+    '	},',
+    '	"boundingBox"  : {',
+    '		"min" : ' + ArrayString(aabb_min) + ',',   
+    '		"max" : ' + ArrayString(aabb_max),   
+    '	},',
+    '	"scale" : ' + str( 1 ) + ',',   
+    '	"materials" : ' + ArrayString("") + ',',   
+    '	"vertices" : ' + ArrayString(vertices) + ',',   
+    '	"normals" : ' + ArrayString(normals) + ',',   
+    '	"colors" : ' + ArrayString(colors) + ',',   
+    '	"uvs" : ' + ArrayString(uvs) + ',',   
+    '	"faces" : ' + ArrayString(faces),
+    '}'
+
+    ]
+    
+    return generateMultiLineString( output, '\n\t\t', 0 )
+
+# #####################################################
+# Generate - Mesh String (for non-scene output) 
+# #####################################################
+def generate_mesh_string_for_non_scene_output(scene):
+    mesh_list = generate_mesh_list(scene)
+
+    vertices, vertex_offsets = process_mesh_vertices(mesh_list)
+    materials, material_offsets = process_mesh_materials(mesh_list)
+
+    normals_to_indices = generate_unique_normals_dictionary(mesh_list)
+    colors_to_indices = generate_unique_colors_dictionary(mesh_list)
+    uvs_to_indices_list = generate_unique_uvs_dictionary_layers(mesh_list)
+    
+    normal_values = generate_normals_from_dictionary(normals_to_indices)
+    color_values = generate_colors_from_dictionary(colors_to_indices)
+    uv_values = generate_uvs_from_dictionary_layers(uvs_to_indices_list)
+
+    faces = process_mesh_polygons(mesh_list, 
+                normals_to_indices, 
+                colors_to_indices, 
+                uvs_to_indices_list, 
+                vertex_offsets, 
+                material_offsets)
+
+    nuvs = []
+    for layer_index, uvs in enumerate(uv_values):
+        nuvs.append(str(len(uvs)))
+
+    nvertices = len(vertices)
+    nnormals = len(normal_values)
+    ncolors = len(color_values)
+    nfaces = len(faces)
+    nuvs = ",".join(nuvs)
+
+    aabb_min, aabb_max = generate_bounding_box(vertices)
+    aabb_min = ",".join(str(f) for f in aabb_min)
+    aabb_max = ",".join(str(f) for f in aabb_max)
+
+    vertices = ",".join(Vector3String(v, True) for v in vertices)
+    normals  = ",".join(Vector3String(v, True) for v in normal_values)
+    colors   = ",".join(Vector3String(v, True) for v in color_values)
+    faces    = ",".join(faces)
+    uvs      = generate_uvs(uv_values)
+
+    output = [
+
+    '{',
+    '	"metadata"  : {',
+    '		"formatVersion" : 3.2,',
+    '		"type"		: "geometry",',
+    '		"generatedBy"	: "convert-to-threejs.py"' + ',',
+    '		"vertices" : ' + str(nvertices) + ',',
+    '		"normals" : ' + str(nnormals) + ',',
+    '		"colors" : ' + str(ncolors) + ',',
+    '		"faces" : ' + str(nfaces) + ',',
+    '		"uvs" : ' + ArrayString(nuvs),
+    '	},',
+    '	"boundingBox"  : {',
+    '		"min" : ' + ArrayString(aabb_min) + ',',   
+    '		"max" : ' + ArrayString(aabb_max),   
+    '	},',
+    '	"scale" : ' + str( 1 ) + ',',   
+    '	"materials" : ' + ArrayString("") + ',',   
+    '	"vertices" : ' + ArrayString(vertices) + ',',   
+    '	"normals" : ' + ArrayString(normals) + ',',   
+    '	"colors" : ' + ArrayString(colors) + ',',   
+    '	"uvs" : ' + ArrayString(uvs) + ',',   
+    '	"faces" : ' + ArrayString(faces),
+    '}'
+
+    ]
+
+    return generateMultiLineString( output, '\n', 0 )
+
+# #####################################################
+# Process - Mesh Geometry
+# #####################################################
+def generate_normal_key(normal):
+    return (round(normal[0], 6), round(normal[1], 6), round(normal[2], 6))
+
+def generate_color_key(color):
+    return getHex(color)
+
+def generate_uv_key(uv):
+    return (round(uv[0], 6), round(uv[1], 6))
+                
+def append_non_duplicate_uvs(source_uvs, dest_uvs, counts):
+    source_layer_count = len(source_uvs)
+    for layer_index in range(source_layer_count):
+
+        dest_layer_count = len(dest_uvs)
+
+        if dest_layer_count <= layer_index:
+            dest_uv_layer = {}
+            count = 0
+            dest_uvs.append(dest_uv_layer)
+            counts.append(count)
+        else:
+            dest_uv_layer = dest_uvs[layer_index]
+            count = counts[layer_index]
+
+        source_uv_layer = source_uvs[layer_index]
+
+        for uv in source_uv_layer:
+            key = generate_uv_key(uv) 
+            if key not in dest_uv_layer:
+                dest_uv_layer[key] = count
+                count += 1
+
+        counts[layer_index] = count
+
+    return counts
+
+def generate_unique_normals_dictionary(mesh_list):
+    normals_dictionary = {}
+    nnormals = 0
+      
+    # Merge meshes, remove duplicate data
+    for mesh in mesh_list:
+        node = mesh.GetNode()
+        normal_values, normal_indices = extract_fbx_vertex_normals(mesh)
+
+        if len(normal_values) > 0:
+            for normal in normal_values:
+                key = generate_normal_key(normal) 
+                if key not in normals_dictionary:
+                    normals_dictionary[key] = nnormals
+                    nnormals += 1
+
+    return normals_dictionary
+
+def generate_unique_colors_dictionary(mesh_list):
+    colors_dictionary = {}
+    ncolors = 0
+      
+    # Merge meshes, remove duplicate data
+    for mesh in mesh_list:
+        color_values, color_indices = extract_fbx_vertex_colors(mesh)
+
+        if len(color_values) > 0:
+            for color in color_values:
+                key = generate_color_key(color) 
+                if key not in colors_dictionary:
+                    colors_dictionary[key] = count
+                    count += 1
+
+    return colors_dictionary
+
+def generate_unique_uvs_dictionary_layers(mesh_list):
+    uvs_dictionary_layers = []
+    nuvs_list = []
+
+    # Merge meshes, remove duplicate data
+    for mesh in mesh_list:
+        uv_values, uv_indices = extract_fbx_vertex_uvs(mesh)
+
+        if len(uv_values) > 0:
+            nuvs_list = append_non_duplicate_uvs(uv_values, uvs_dictionary_layers, nuvs_list)
+
+    return uvs_dictionary_layers
+
+def generate_normals_from_dictionary(normals_dictionary):
+    normal_values = []
+    for key, index in sorted(normals_dictionary.items(), key = operator.itemgetter(1)):
+        normal_values.append(key)
+
+    return normal_values
+
+def generate_colors_from_dictionary(colors_dictionary):
+    color_values = []
+    for key, index in sorted(colors_dictionary.items(), key = operator.itemgetter(1)):
+        color_values.append(key)
+
+    return color_values
+
+def generate_uvs_from_dictionary_layers(uvs_dictionary_layers):
+    uv_values = []
+    for uvs_dictionary in uvs_dictionary_layers:
+        uv_values_layer = []    
+        for key, index in sorted(uvs_dictionary.items(), key = operator.itemgetter(1)):
+            uv_values_layer.append(key)
+        uv_values.append(uv_values_layer)
+
+    return uv_values
+
+def generate_normal_indices_for_poly(poly_index, mesh_normal_values, mesh_normal_indices, normals_to_indices):
+    if len(mesh_normal_indices) <= 0:
+        return []
+
+    poly_normal_indices = mesh_normal_indices[poly_index]
+    poly_size = len(poly_normal_indices)
+
+    output_poly_normal_indices = []
+    for v in range(poly_size):
+        normal_index = poly_normal_indices[v]
+        normal_value = mesh_normal_values[normal_index]
+
+        key = generate_normal_key(normal_value)
+
+        output_index = normals_to_indices[key]
+        output_poly_normal_indices.append(output_index)
+
+    return output_poly_normal_indices
+
+def generate_color_indices_for_poly(poly_index, mesh_color_values, mesh_color_indices, colors_to_indices):
+    if len(mesh_color_indices) <= 0:
+        return []
+
+    poly_color_indices = mesh_color_indices[poly_index]
+    poly_size = len(poly_color_indices)
+
+    output_poly_color_indices = []
+    for v in range(poly_size):
+        color_index = poly_color_indices[v]
+        color_value = mesh_color_values[color_index]
+
+        key = generate_color_key(color_value)
+
+        output_index = colors_to_indices[key]
+        output_poly_color_indices.append(output_index)
+
+    return output_poly_color_indices
+
+def generate_uv_indices_for_poly(poly_index, mesh_uv_values, mesh_uv_indices, uvs_to_indices):
+    if len(mesh_uv_indices) <= 0:
+        return []
+
+    poly_uv_indices = mesh_uv_indices[poly_index]
+    poly_size = len(poly_uv_indices)
+
+    output_poly_uv_indices = []
+    for v in range(poly_size):
+        uv_index = poly_uv_indices[v]
+        uv_value = mesh_uv_values[uv_index]
+
+        key = generate_uv_key(uv_value)
+
+        output_index = uvs_to_indices[key]
+        output_poly_uv_indices.append(output_index)
+
+    return output_poly_uv_indices
+
+def process_mesh_vertices(mesh_list):
+    vertex_offset = 0
+    vertex_offset_list = [0]
+    vertices = []
+    for mesh in mesh_list:
+        node = mesh.GetNode()
+        mesh_vertices = extract_fbx_vertex_positions(mesh)
+                
+        vertices.extend(mesh_vertices[:])
+        vertex_offset += len(mesh_vertices)
+        vertex_offset_list.append(vertex_offset)
+
+    return vertices, vertex_offset_list
+
+def process_mesh_materials(mesh_list):
+    material_offset = 0
+    material_offset_list = [0]
+    materials_list = []
+
+    #TODO: remove duplicate mesh references
+    for mesh in mesh_list:
+        node = mesh.GetNode()
+                
+        material_count = node.GetMaterialCount()
+        if material_count > 0:
+            for l in range(mesh.GetLayerCount()):
+                materials = mesh.GetLayer(l).GetMaterials()
+                if materials:
+                    if materials.GetReferenceMode() == FbxLayerElement.eIndex:
+                        #Materials are in an undefined external table
+                        continue
+
+                    for i in range(material_count):
+                        material = node.GetMaterial(i)
+                        materials_list.append( material )
+
+                    material_offset += material_count
+                    material_offset_list.append(material_offset)
+
+    return materials_list, material_offset_list
+
+def process_mesh_polygons(mesh_list, normals_to_indices, colors_to_indices, uvs_to_indices_list, vertex_offset_list, material_offset_list):
+    faces = []
+    for mesh_index in range(len(mesh_list)):
+        mesh = mesh_list[mesh_index]
+        poly_count = mesh.GetPolygonCount()
+        control_points = mesh.GetControlPoints() 
+
+        normal_values, normal_indices = extract_fbx_vertex_normals(mesh)
+        color_values, color_indices = extract_fbx_vertex_colors(mesh)
+        uv_values_layers, uv_indices_layers = extract_fbx_vertex_uvs(mesh)
+
+        for poly_index in range(poly_count):
+            poly_size = mesh.GetPolygonSize(poly_index)
+
+            face_normals = generate_normal_indices_for_poly(poly_index, normal_values, normal_indices, normals_to_indices)
+            face_colors = generate_color_indices_for_poly(poly_index, color_values, color_indices, colors_to_indices)
+
+            face_uv_layers = []
+            for l in range(len(uv_indices_layers)):
+                uv_values = uv_values_layers[l]
+                uv_indices = uv_indices_layers[l]
+                face_uv_indices = generate_uv_indices_for_poly(poly_index, uv_values, uv_indices, uvs_to_indices_list[l])
+                face_uv_layers.append(face_uv_indices)
+                
+            face_vertices = []
+            for vertex_index in range(poly_size):
+                control_point_index = mesh.GetPolygonVertex(poly_index, vertex_index)
+                face_vertices.append(control_point_index)
+
+            #TODO: assign a default material to any mesh without one
+            if len(material_offset_list) <= mesh_index:
+                material_offset = 0
+            else:
+                material_offset = material_offset_list[mesh_index]
+
+            vertex_offset = vertex_offset_list[mesh_index]
+
+            face = generate_mesh_face(mesh, 
+                      poly_index, 
+                      face_vertices,
+                      face_normals,
+                      face_colors,
+                      face_uv_layers,
+                      vertex_offset,
+                      material_offset)
+
+            faces.append(face)
+
+
+    return faces
+
+def generate_mesh_face(mesh, polygon_index, vertex_indices, normals, colors, uv_layers, vertex_offset, material_offset):
+    isTriangle = ( len(vertex_indices) == 3 )
+    nVertices = 3 if isTriangle else 4
+
+    hasMaterial = False
+    for l in range(mesh.GetLayerCount()):
+        materials = mesh.GetLayer(l).GetMaterials()
+        if materials:
+            hasMaterial = True
+            break
+                
+    hasFaceUvs = False
+    hasFaceVertexUvs = len(uv_layers) > 0
+    hasFaceNormals = False 
+    hasFaceVertexNormals = len(normals) > 0
+    hasFaceColors = False 
+    hasFaceVertexColors = len(colors) > 0
+
+    faceType = 0
+    faceType = setBit(faceType, 0, not isTriangle)
+    faceType = setBit(faceType, 1, hasMaterial)
+    faceType = setBit(faceType, 2, hasFaceUvs)
+    faceType = setBit(faceType, 3, hasFaceVertexUvs)
+    faceType = setBit(faceType, 4, hasFaceNormals)
+    faceType = setBit(faceType, 5, hasFaceVertexNormals)
+    faceType = setBit(faceType, 6, hasFaceColors)
+    faceType = setBit(faceType, 7, hasFaceVertexColors)
+
+    faceData = []
+
+    # order is important, must match order in JSONLoader
+
+    # face type
+    # vertex indices
+    # material index
+    # face uvs index
+    # face vertex uvs indices
+    # face color index
+    # face vertex colors indices
+
+    faceData.append(faceType)
+
+    tmp = []
+    for i in range(nVertices):
+        tmp.append(vertex_indices[i])
+        index = vertex_indices[i] + vertex_offset
+        faceData.append(index)
+
+    if hasMaterial:
+        material_id = 0
+        for l in range(mesh.GetLayerCount()):
+            materials = mesh.GetLayer(l).GetMaterials()
+            if materials:
+                material_id = materials.GetIndexArray().GetAt(polygon_index)
+                break
+        material_id += material_offset
+        faceData.append( material_id )
+
+    if hasFaceVertexUvs:
+        for polygon_uvs in uv_layers:
+            for i in range(nVertices):
+                index = polygon_uvs[i]
+                faceData.append(index)
+
+    if hasFaceVertexNormals:
+        for i in range(nVertices):
+            index = normals[i]
+            faceData.append(index)
+
+    if hasFaceVertexColors:
+        for i in range(nVertices):
+            index = colors[i]
+            faceData.append(index)
+
+    return ",".join( map(str, faceData) ) 
+
+
+# #####################################################
+# Generate - Mesh List 
+# #####################################################
+def generate_mesh_list_from_hierarchy(node, mesh_list):
+    if node.GetNodeAttribute() == None:
+        pass
+    else:
+        attribute_type = (node.GetNodeAttribute().GetAttributeType())
+        if attribute_type == FbxNodeAttribute.eMesh or \
+           attribute_type == FbxNodeAttribute.eNurbs or \
+           attribute_type == FbxNodeAttribute.eNurbsSurface or \
+           attribute_type == FbxNodeAttribute.ePatch:
+
+            if attribute_type != FbxNodeAttribute.eMesh:
+                converter.TriangulateInPlace(node);
+
+            mesh_list.append(node.GetNodeAttribute())
+
+    for i in range(node.GetChildCount()):
+        generate_mesh_list_from_hierarchy(node.GetChild(i), mesh_list)
+
+def generate_mesh_list(scene):
+    mesh_list = []
+    node = scene.GetRootNode()
+    if node:
+        for i in range(node.GetChildCount()):
+            generate_mesh_list_from_hierarchy(node.GetChild(i), mesh_list)
+    return mesh_list
+
+# #####################################################
+# Generate - Embeds 
+# #####################################################
+def generate_embed_list_from_hierarchy(node, embed_list):
+    if node.GetNodeAttribute() == None:
+        pass
+    else:
+        attribute_type = (node.GetNodeAttribute().GetAttributeType())
+        if attribute_type == FbxNodeAttribute.eMesh or \
+           attribute_type == FbxNodeAttribute.eNurbs or \
+           attribute_type == FbxNodeAttribute.eNurbsSurface or \
+           attribute_type == FbxNodeAttribute.ePatch:
+
+            if attribute_type != FbxNodeAttribute.eMesh:
+                converter.TriangulateInPlace(node);
+
+            embed_string = generate_mesh_string_for_scene_output(node)
+            embed_list.append(embed_string)
+
+    for i in range(node.GetChildCount()):
+        generate_embed_list_from_hierarchy(node.GetChild(i), embed_list)
+
+def generate_embed_list(scene):
+    embed_list = []
+    node = scene.GetRootNode()
+    if node:
+        for i in range(node.GetChildCount()):
+            generate_embed_list_from_hierarchy(node.GetChild(i), embed_list)
+    return embed_list
+
+# #####################################################
+# Generate - Geometries 
+# #####################################################
+def generate_geometry_string(node):
+
+    output = [
+    '\t' + LabelString( getGeometryName( node, True ) ) + ' : {',
+    '	"type"  : "embedded",',
+    '	"id" : ' + LabelString( getEmbedName( node, True ) ),
+    '}'
+    ]
+
+    return generateMultiLineString( output, '\n\t\t', 0 )
+
+def generate_geometry_list_from_hierarchy(node, geometry_list):
+    if node.GetNodeAttribute() == None:
+        pass
+    else:
+        attribute_type = (node.GetNodeAttribute().GetAttributeType())
+        if attribute_type == FbxNodeAttribute.eMesh:
+            geometry_string = generate_geometry_string(node)
+            geometry_list.append(geometry_string)
+    for i in range(node.GetChildCount()):
+        generate_geometry_list_from_hierarchy(node.GetChild(i), geometry_list)
+
+def generate_geometry_list(scene):
+    geometry_list = []
+    node = scene.GetRootNode()
+    if node:
+        for i in range(node.GetChildCount()):
+            generate_geometry_list_from_hierarchy(node.GetChild(i), geometry_list)
+    return geometry_list
+
+# #####################################################
+# Generate - Camera Names
+# #####################################################
+def generate_camera_name_list_from_hierarchy(node, camera_list):
+    if node.GetNodeAttribute() == None:
+        pass
+    else:
+        attribute_type = (node.GetNodeAttribute().GetAttributeType())
+        if attribute_type == FbxNodeAttribute.eCamera:
+            camera_string = getObjectName(node) 
+            camera_list.append(camera_string)
+    for i in range(node.GetChildCount()):
+        generate_camera_name_list_from_hierarchy(node.GetChild(i), camera_list)
+
+def generate_camera_name_list(scene):
+    camera_list = []
+    node = scene.GetRootNode()
+    if node:
+        for i in range(node.GetChildCount()):
+            generate_camera_name_list_from_hierarchy(node.GetChild(i), camera_list)
+    return camera_list
+
+# #####################################################
+# Generate - Light Object 
+# #####################################################
+def generate_default_light_string(padding):
+    direction = (1,1,1)
+    color = (1,1,1)
+    intensity = 80.0
+
+    output = [
+
+    '\t\t' + LabelString( 'default_light' ) + ' : {',
+    '	"type"      : "DirectionalLight",',
+    '	"color"     : ' + str(getHex(color)) + ',',
+    '	"intensity" : ' + str(intensity/100.0) + ',',
+    '	"direction" : ' + Vector3String( direction ) + ',',
+    '	"target"    : ' + LabelString( getObjectName( None ) ),
+    ' }'
+
+    ]
+
+    return generateMultiLineString( output, '\n\t\t', padding )
+
+def generate_light_string(node, padding):
+    light = node.GetNodeAttribute()
+    light_types = ["point", "directional", "spot", "area", "volume"]
+    light_type = light_types[light.LightType.Get()]
+
+    transform = node.EvaluateLocalTransform()
+    position = transform.GetT()
+
+    output = []
+
+    if light_type == "directional":
+
+        # Three.js directional lights emit light from a point in 3d space to a target node or the origin.
+        # When there is no target, we need to take a point, one unit away from the origin, and move it 
+        # into the right location so that the origin acts like the target
+        
+        if node.GetTarget():
+            direction = position
+        else:
+            translation = FbxVector4(0,0,0,0)
+            scale = FbxVector4(1,1,1,1)
+            rotation = transform.GetR()
+            matrix = FbxMatrix(translation, rotation, scale)
+            direction = matrix.MultNormalize(global_up_vector) 
+
+        output = [
+
+        '\t\t' + LabelString( getObjectName( node ) ) + ' : {',
+        '	"type"      : "DirectionalLight",',
+        '	"color"     : ' + str(getHex(light.Color.Get())) + ',',
+        '	"intensity" : ' + str(light.Intensity.Get()/100.0) + ',',
+        '	"direction" : ' + Vector3String( direction ) + ',',
+        '	"target"    : ' + LabelString( getObjectName( node.GetTarget() ) ) + ( ',' if node.GetChildCount() > 0 else '' )
+        ]
+
+    elif light_type == "point":
+
+        output = [
+
+        '\t\t' + LabelString( getObjectName( node ) ) + ' : {',
+        '	"type"      : "PointLight",',
+        '	"color"     : ' + str(getHex(light.Color.Get())) + ',',
+        '	"intensity" : ' + str(light.Intensity.Get()/100.0) + ',',
+        '	"position"  : ' + Vector3String( position ) + ',',
+        '	"distance"  : ' + str(light.FarAttenuationEnd.Get()) + ( ',' if node.GetChildCount() > 0 else '' )
+
+        ]
+
+    elif light_type == "spot":
+
+        output = [
+
+        '\t\t' + LabelString( getObjectName( node ) ) + ' : {',
+        '	"type"      : "SpotLight",',
+        '	"color"     : ' + str(getHex(light.Color.Get())) + ',',
+        '	"intensity" : ' + str(light.Intensity.Get()/100.0) + ',',
+        '	"position"  : ' + Vector3String( position ) + ',',
+        '	"distance"  : ' + str(light.FarAttenuationEnd.Get()) + ',',
+        '	"angle"     : ' + str((light.OuterAngle.Get()*math.pi)/180) + ',',
+        '	"exponent"  : ' + str(light.DecayType.Get()) + ',',
+        '	"target"    : ' + LabelString( getObjectName( node.GetTarget() ) ) + ( ',' if node.GetChildCount() > 0 else '' )
+
+        ]
+
+    return generateMultiLineString( output, '\n\t\t', padding )
+
+def generate_ambient_light_string(scene):
+
+    scene_settings = scene.GetGlobalSettings()
+    ambient_color = scene_settings.GetAmbientColor()
+    ambient_color = (ambient_color.mRed, ambient_color.mGreen, ambient_color.mBlue)
+
+    if ambient_color[0] == 0 and ambient_color[1] == 0 and ambient_color[2] == 0:
+        return None
+
+    class AmbientLight:
+        def GetName(self):
+            return "AmbientLight"
+
+    node = AmbientLight()
+
+    output = [
+
+    '\t\t' + LabelString( getObjectName( node ) ) + ' : {',
+    '	"type"  : "AmbientLight",',
+    '	"color" : ' + str(getHex(ambient_color)),
+    '}'
+
+    ]
+
+    return generateMultiLineString( output, '\n\t\t', 0 )
+    
+# #####################################################
+# Generate - Camera Object 
+# #####################################################
+def generate_default_camera_string(padding):
+    position = (100, 100, 100)
+    near = 0.1
+    far = 1000
+    fov = 75
+
+    output = [
+
+    '\t\t' + LabelString( 'default_camera' ) + ' : {',
+    '	"type"     : "PerspectiveCamera",',
+    '	"fov"      : ' + str(fov) + ',',
+    '	"near"     : ' + str(near) + ',',
+    '	"far"      : ' + str(far) + ',',
+    '	"position" : ' + Vector3String( position ), 
+    ' }'
+
+    ]
+
+    return generateMultiLineString( output, '\n\t\t', padding )
+
+def generate_camera_string(node, padding):
+    camera = node.GetNodeAttribute()
+
+    target_node = node.GetTarget()
+    target = ""
+    if target_node:
+        transform = target.EvaluateLocalTransform()
+        target = transform.GetT()
+    else:
+        target = camera.InterestPosition.Get()
+
+    position = camera.Position.Get()
+  
+    projection_types = [ "perspective", "orthogonal" ]
+    projection = projection_types[camera.ProjectionType.Get()]
+
+    near = camera.NearPlane.Get()
+    far = camera.FarPlane.Get()
+
+    output = []
+
+    if projection == "perspective":
+
+        aspect = camera.PixelAspectRatio.Get()
+        fov = camera.FieldOfView.Get()
+
+        output = [
+
+        '\t\t' + LabelString( getObjectName( node ) ) + ' : {',
+        '	"type"     : "PerspectiveCamera",',
+        '	"fov"      : ' + str(fov) + ',',
+        '	"aspect"   : ' + str(aspect) + ',',
+        '	"near"     : ' + str(near) + ',',
+        '	"far"      : ' + str(far) + ',',
+        '	"position" : ' + Vector3String( position ) + ( ',' if node.GetChildCount() > 0 else '' )
+
+        ]
+
+    elif projection == "orthogonal":
+
+        left = ""
+        right = ""
+        top = ""
+        bottom = ""
+
+        output = [
+
+        '\t\t' + LabelString( getObjectName( node ) ) + ' : {',
+        '	"type"     : "OrthographicCamera",',
+        '	"left"     : ' + left + ',',
+        '	"right"    : ' + right + ',',
+        '	"top"      : ' + top + ',',
+        '	"bottom"   : ' + bottom + ',',
+        '	"near"     : ' + str(near) + ',',
+        '	"far"      : ' + str(far) + ',',
+        '	"position" : ' + Vector3String( position ) + ( ',' if node.GetChildCount() > 0 else '' )
+
+        ]
+
+    return generateMultiLineString( output, '\n\t\t', padding )
+
+# #####################################################
+# Generate - Mesh Object 
+# #####################################################
+def generate_mesh_object_string(node, padding):
+    mesh = node.GetNodeAttribute()
+    transform = node.EvaluateLocalTransform()
+    position = transform.GetT()
+    scale = transform.GetS()
+    rotation = getRadians(transform.GetR())
+
+    material_count = node.GetMaterialCount()
+    material_name = ""
+
+    if material_count > 0:
+        material_names = []
+        for l in range(mesh.GetLayerCount()):
+            materials = mesh.GetLayer(l).GetMaterials()
+            if materials:
+                if materials.GetReferenceMode() == FbxLayerElement.eIndex:
+                    #Materials are in an undefined external table
+                    continue
+                for i in range(material_count):
+                    material = node.GetMaterial(i)
+                    material_names.append( getMaterialName(material) )
+        #If this mesh has more than one material, use a proxy material
+        material_name = getMaterialName( node, True) if material_count > 1 else material_names[0] 
+
+    output = [
+
+    '\t\t' + LabelString( getObjectName( node ) ) + ' : {',
+    '	"geometry" : ' + LabelString( getGeometryName( node, True ) ) + ',',
+    '	"material" : ' + LabelString( material_name ) + ',',
+    '	"position" : ' + Vector3String( position ) + ',',
+    '	"rotation" : ' + Vector3String( rotation ) + ',',
+    '	"scale"	   : ' + Vector3String( scale ) + ',',
+    '	"visible"  : ' + getObjectVisible( node ) + ( ',' if node.GetChildCount() > 0 else '' )
+
+    ]
+
+    return generateMultiLineString( output, '\n\t\t', padding )
+
+# #####################################################
+# Generate - Object 
+# #####################################################
+def generate_object_string(node, padding):
+    node_types = ["Unknown", "Null", "Marker", "Skeleton", "Mesh", "Nurbs", "Patch", "Camera", 
+    "CameraStereo", "CameraSwitcher", "Light", "OpticalReference", "OpticalMarker", "NurbsCurve", 
+    "TrimNurbsSurface", "Boundary", "NurbsSurface", "Shape", "LODGroup", "SubDiv", "CachedEffect", "Line"]
+
+    transform = node.EvaluateLocalTransform()
+    position = transform.GetT()
+    scale = transform.GetS()
+    rotation = getRadians(transform.GetR())
+
+    node_type = ""
+    if node.GetNodeAttribute() == None:
+        node_type = "Null"
+    else:
+        node_type = node_types[node.GetNodeAttribute().GetAttributeType()]
+
+    output = [
+
+    '\t\t' + LabelString( getObjectName( node ) ) + ' : {',
+    '	"fbx_type" : ' + LabelString( node_type ) + ',',
+    '	"position" : ' + Vector3String( position ) + ',',
+    '	"rotation" : ' + Vector3String( rotation ) + ',',
+    '	"scale"	   : ' + Vector3String( scale ) + ',',
+    '	"visible"  : ' + getObjectVisible( node ) + ( ',' if node.GetChildCount() > 0 else '' )
+
+    ]
+
+    return generateMultiLineString( output, '\n\t\t', padding )
+
+# #####################################################
+# Parse - Objects 
+# #####################################################
+def generate_object_hierarchy(node, object_list, pad, siblings_left):
+    object_count = 0
+    if node.GetNodeAttribute() == None:
+        object_string = generate_object_string(node, pad)
+        object_list.append(object_string)
+        object_count += 1
+    else:
+        attribute_type = (node.GetNodeAttribute().GetAttributeType())
+        if attribute_type == FbxNodeAttribute.eMesh:
+            object_string = generate_mesh_object_string(node, pad)
+            object_list.append(object_string)
+            object_count += 1
+        elif attribute_type == FbxNodeAttribute.eLight:
+            object_string = generate_light_string(node, pad)
+            object_list.append(object_string)
+            object_count += 1
+        elif attribute_type == FbxNodeAttribute.eCamera:
+            object_string = generate_camera_string(node, pad)
+            object_list.append(object_string)
+            object_count += 1
+        else:
+            object_string = generate_object_string(node, pad)
+            object_list.append(object_string)
+            object_count += 1
+
+    if node.GetChildCount() > 0:
+      object_list.append( PaddingString( pad + 1 ) + '\t\t"children" : {\n' )
+
+      for i in range(node.GetChildCount()):
+          object_count += generate_object_hierarchy(node.GetChild(i), object_list, pad + 2, node.GetChildCount() - i - 1)
+
+      object_list.append( PaddingString( pad + 1 ) + '\t\t}' )
+    object_list.append( PaddingString( pad ) + '\t\t}' + (',\n' if siblings_left > 0 else ''))
+
+    return object_count
+
+def generate_scene_objects_string(scene):
+    object_count = 0
+    object_list = []
+
+    ambient_light = generate_ambient_light_string(scene)
+    if ambient_light:
+        if scene.GetNodeCount() > 0 or option_default_light or option_default_camera:
+            ambient_light += (',\n')
+        object_list.append(ambient_light)
+        object_count += 1
+
+    if option_default_light:
+        default_light = generate_default_light_string(0)
+        if scene.GetNodeCount() > 0 or option_default_camera:
+            default_light += (',\n')
+        object_list.append(default_light)
+        object_count += 1
+
+    if option_default_camera:
+        default_camera = generate_default_camera_string(0)
+        if scene.GetNodeCount() > 0:
+            default_camera += (',\n')
+        object_list.append(default_camera)
+        object_count += 1
+
+    node = scene.GetRootNode()
+    if node:
+        for i in range(node.GetChildCount()):
+            object_count += generate_object_hierarchy(node.GetChild(i), object_list, 0, node.GetChildCount() - i - 1)
+
+    return "\n".join(object_list), object_count
+
+# #####################################################
+# Parse - Geometry (non-scene output) 
+# #####################################################
+def extract_geometry(scene, filename):
+    mesh_string = generate_mesh_string_for_non_scene_output(scene)
+    return mesh_string
+
+# #####################################################
+# Parse - Scene (scene output)
+# #####################################################
+def extract_scene(scene, filename):
+    global_settings = scene.GetGlobalSettings()
+    objects, nobjects = generate_scene_objects_string(scene)
+
+    textures = generate_texture_list(scene)
+    materials = generate_material_list(scene)
+    geometries = generate_geometry_list(scene)
+    embeds = generate_embed_list(scene)
+    fogs = []
+
+    ntextures = len(textures)
+    nmaterials = len(materials)
+    ngeometries = len(geometries)
+
+    #TODO: extract actual root/scene data here
+    position = Vector3String( (0,0,0) )
+    rotation = Vector3String( (0,0,0) )
+    scale    = Vector3String( (1,1,1) )
+
+    camera_names = generate_camera_name_list(scene)
+    scene_settings = scene.GetGlobalSettings()
+
+    #TODO: this might exist as part of the FBX spec
+    bgcolor = Vector3String( (0.667,0.667,0.667) )
+    bgalpha = 1
+
+    # This does not seem to be any help here
+    # global_settings.GetDefaultCamera() 
+
+    defcamera = LabelString(camera_names[0] if len(camera_names) > 0 else "")
+    if option_default_camera:
+      defcamera = LabelString('default_camera')
+
+    #TODO: extract fog info from scene
+    deffog = LabelString("")
+
+    geometries = generateMultiLineString( geometries, ",\n\n\t", 0 )
+    materials = generateMultiLineString( materials, ",\n\n\t", 0 )
+    textures = generateMultiLineString( textures, ",\n\n\t", 0 )
+    embeds = generateMultiLineString( embeds, ",\n\n\t", 0 )
+    fogs = generateMultiLineString( fogs, ",\n\n\t", 0 )
+
+    output = [
+
+    '{',
+    '	"metadata": {',
+    '		"formatVersion" : 3.2,',
+    '		"type"		: "scene",',
+    '		"generatedBy"	: "convert-to-threejs.py",',
+    '		"objects"       : ' + str(nobjects) + ',',
+    '		"geometries"    : ' + str(ngeometries) + ',',
+    '		"materials"     : ' + str(nmaterials) + ',',
+    '		"textures"      : ' + str(ntextures),
+    '	},',
+
+    '',
+    '	"urlBaseType": "relativeToScene",',
+    '',
+
+    '	"objects" :',
+    '	{',
+    objects,
+    '	},',
+    '',
+
+    '	"geometries" :',
+    '	{',
+    '\t' + 	geometries,
+    '	},',
+    '',
+
+    '	"materials" :',
+    '	{',
+    '\t' + 	materials,
+    '	},',
+    '',
+
+    '	"textures" :',
+    '	{',
+    '\t' + 	textures,
+    '	},',
+    '',
+
+    '	"embeds" :',
+    '	{',
+    '\t' + 	embeds,
+    '	},',
+    '',
+
+    '	"fogs" :',
+    '	{',
+    '\t' + 	fogs,
+    '	},',
+    '',
+
+    '	"transform" :',
+    '	{',
+    '		"position"  : ' + position + ',',
+    '		"rotation"  : ' + rotation + ',',
+    '		"scale"     : ' + scale,
+    '	},',
+    '',
+
+    '	"defaults" :',
+    '	{',
+    '		"bgcolor" : ' + str(bgcolor) + ',',
+    '		"bgalpha" : ' + str(bgalpha) + ',',
+    '		"camera"  : ' + defcamera + ',',
+    '		"fog"  	  : ' + deffog,
+    '	}',
+    '}'
+
+    ]
+
+    return "\n".join(output)
+
+# #####################################################
+# file helpers
+# #####################################################
+def write_file(fname, content):
+    out = open(fname, "w")
+    out.write(content)
+    out.close()
+
+# #####################################################
+# main
+# #####################################################
+if __name__ == "__main__":
+    from optparse import OptionParser
+
+    try:
+        from FbxCommon import *
+    except ImportError:
+        import platform
+        msg = 'Could not locate the python FBX SDK!\n'
+        msg += 'You need to copy the FBX SDK into your python install folder such as '
+        if platform.system() == 'Windows' or platform.system() == 'Microsoft':
+            msg += '"Python26/Lib/site-packages"'
+        elif platform.system() == 'Linux':
+            msg += '"/usr/local/lib/python2.6/site-packages"'
+        elif platform.system() == 'Darwin':
+            msg += '"/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/site-packages"'        
+        msg += ' folder.'
+        print(msg) 
+        sys.exit(1)
+    
+    usage = "Usage: %prog [source_file.fbx] [output_file.js] [options]"
+    parser = OptionParser(usage=usage)
+
+    parser.add_option('-t', '--triangulate', action='store_true', dest='triangulate', help="force quad geometry into triangles", default=False)
+    parser.add_option('-x', '--no-textures', action='store_true', dest='notextures', help="don't include texture references in output file", default=False)
+    parser.add_option('-p', '--prefix', action='store_true', dest='prefix', help="prefix object names in output file", default=False)
+    parser.add_option('-g', '--geometry-only', action='store_true', dest='geometry', help="output geometry only", default=False)
+    parser.add_option('-c', '--default-camera', action='store_true', dest='defcamera', help="include default camera in output scene", default=False)
+    parser.add_option('-l', '--defualt-light', action='store_true', dest='deflight', help="include default light in output scene", default=False)
+
+    (options, args) = parser.parse_args()
+
+    option_triangulate = options.triangulate 
+    option_textures = True if not options.notextures else False
+    option_prefix = options.prefix
+    option_geometry = options.geometry 
+    option_default_camera = options.defcamera 
+    option_default_light = options.deflight 
+
+    # Prepare the FBX SDK.
+    sdk_manager, scene = InitializeSdkObjects()
+    converter = FbxGeometryConverter(sdk_manager)
+    global_up_vector = get_up_vector(scene)
+
+    # The converter takes an FBX file as an argument.
+    if len(args) > 1:
+        print("\nLoading file: %s" % args[0])
+        result = LoadScene(sdk_manager, scene, args[0])
+    else:
+        result = False
+        print("\nUsage: convert_fbx_to_threejs [source_file.fbx] [output_file.js]\n")
+
+    if not result:
+        print("\nAn error occurred while loading the file...")
+    else:
+        if option_triangulate:
+            print("\nForcing geometry to triangles")
+            triangulate_scene(scene)
+
+        if option_geometry:
+            output_content = extract_geometry(scene, os.path.basename(args[0]))
+        else:
+            output_content = extract_scene(scene, os.path.basename(args[0]))
+
+        output_path = os.path.join(os.getcwd(), args[1])
+        write_file(output_path, output_content)
+
+        print("\nExported Three.js file to:\n%s\n" % output_path)
+
+    # Destroy all objects created by the FBX SDK.
+    sdk_manager.Destroy()
+    sys.exit(0)