SceneObject* parseNode(KFbxNode *node, int level = 0) {
KString s = node->GetName();
KFbxNodeAttribute::EAttributeType attributeType;
stringstream ss;
for (int i=0;i<level;i++){
ss<<" ";
}
SceneObject* sceneObject = NULL;
MeshComponent* ga = NULL;
if (node->GetNodeAttribute() == NULL){
ss<<"No node attribute"<<endl;
} else {
attributeType = node->GetNodeAttribute()->GetAttributeType();
switch (attributeType) {
case KFbxNodeAttribute::eMARKER:
ss<<"eMarker"<<endl;
break;
case KFbxNodeAttribute::eSKELETON:
ss<<"eSkeleton"<<endl;
break;
case KFbxNodeAttribute::eMESH:
{
KFbxMesh *fbxMesh = node->GetMesh();
KFbxVector4 *controlPoints = fbxMesh->GetControlPoints();
int polygonCount = fbxMesh->GetPolygonCount();
vector<glm::vec3> vertices;
vector<glm::vec3> normals;
vector<glm::vec2> texCords;
vector<int> polycount;
assert(fbxMesh->GetLayerCount(KFbxLayerElement::eNORMAL)==1); // assume only one normal layer
KFbxLayer *normalLayer = fbxMesh->GetLayer(0, KFbxLayerElement::eNORMAL);
KFbxLayerElementNormal *normalElement = normalLayer->GetNormals();
KFbxLayerElementArrayTemplate<KFbxVector4> *normalArray = &(normalElement->GetDirectArray());
int normalCount = normalArray->GetCount();
vector<int> indices;
assert(fbxMesh->GetControlPointsCount() <= USHRT_MAX);
for (int i=0;i<fbxMesh->GetControlPointsCount();i++){
glm::vec3 v = toVector(controlPoints[i]);
vertices.push_back(v);
v = toVector(normalArray->GetAt(i));
normals.push_back(v);
}
for (int i=0;i<polygonCount;i++){
int polygonSize = fbxMesh->GetPolygonSize(i);
polycount.push_back(polygonSize);
for (int j=0;j<polygonSize;j++){
if (j>2){
// if polygon size > 2 then add first and last index
// this triangulates the mesh
int first = fbxMesh->GetPolygonVertex(i,0);
int last = fbxMesh->GetPolygonVertex(i,j-1);
indices.push_back(first);
indices.push_back(last);
}
int polygonIndex = fbxMesh->GetPolygonVertex(i,j);
indices.push_back(polygonIndex);
/*KFbxVector4 vectorSrc = controlPoints[polygonIndex];
Vector3 vectorDst = toVector(vectorSrc);
vertices.push_back(vectorDst);
texCords.push_back(Vector2(0,0));
KFbxVector4 normalSrc = normalArray->GetAt(polygonIndex);
Vector3 normalDst = toVector(normalSrc);
normals.push_back(normalDst);*/
}
}
Mesh mesh;
ss<<"Creating mesh: vertices "<<vertices.size()<<" normals "<<normals.size()<<" indices "<<indices.size()<<endl;
mesh.SetVertices(vertices);
mesh.SetNormals(normals);
mesh.SetIndices(indices);
sceneObject = new SceneObject();
ga = new MeshComponent();
ga->SetMesh(&mesh);
sceneObject->AddCompnent(ga);
// Set translate
fbxDouble3 v3 = node->LclTranslation.Get();
glm::vec3 translate = toVector(v3);
sceneObject->GetTransform()->SetPosition(translate);
// Set rotation
v3 = node->LclRotation.Get();
glm::vec3 rotation = toVector(v3)*Mathf::DEGREE_TO_RADIAN;
sceneObject->GetTransform()->SetRotation(rotation);
// Set scale
v3 = node->LclScaling.Get();
glm::vec3 scale = toVector(v3);
sceneObject->GetTransform()->SetScale(scale);
}
break;
case KFbxNodeAttribute::eCAMERA:
ss<<"eCAMERA"<<endl;
break;
case KFbxNodeAttribute::eLIGHT:
ss<<"eLIGHT"<<endl;
break;
case KFbxNodeAttribute::eBOUNDARY:
ss<<"eBOUNDARY"<<endl;
break;
default:
ss<<s<<endl;
}
}
if (node->GetChildCount()>0){
for (int i=0;i<node->GetChildCount();i++){
SceneObject *res = parseNode(node->GetChild(i),level+1);
if (res!=NULL){
if (sceneObject == NULL){
sceneObject = new SceneObject();
}
sceneObject->AddChild(res);
}
}
}
DEBUG(ss.str());
return sceneObject;
}
void FBXJSONSerializer::recurse_over_model(fbxsdk_2012_1::KFbxNode *fbx_node, json::Array& meshes_array) {
KFbxMesh* old_mesh = fbx_node->GetMesh();
if (old_mesh) {
KFbxGeometryConverter converter(fbx_node->GetFbxSdkManager());
KFbxMesh* mesh = converter.TriangulateMesh(old_mesh);
mesh->ComputeBBox();
mesh->ComputeVertexNormals();
Object json_mesh;
{
KFbxLayerElementUV* uvs = mesh->GetLayer(0)->GetUVs();
KFbxLayerElementNormal* normals = mesh->GetLayer(0, KFbxLayerElement::eNORMAL)->GetNormals();
Array json_mesh_normals;
Array json_mesh_uvs;
Array json_mesh_vertices;
int polygon_count = mesh->GetPolygonCount();
for (int poly_index = 0; poly_index < polygon_count; poly_index++) {
for (int vertex_index = 0; vertex_index < mesh->GetPolygonSize(poly_index); vertex_index++) {
int vertex_position = mesh->GetPolygonVertex(poly_index, vertex_index);
KFbxVector4 vertex = mesh->GetControlPoints()[vertex_position];
Number vertex_x = vertex.GetAt(0); json_mesh_vertices.Insert(vertex_x);
Number vertex_y = vertex.GetAt(1); json_mesh_vertices.Insert(vertex_y);
Number vertex_z = vertex.GetAt(2); json_mesh_vertices.Insert(vertex_z);
KFbxVector4 normal = normals->GetDirectArray()[vertex_position];
Number normal_x = normal.GetAt(0); json_mesh_normals.Insert(normal_x);
Number normal_y = normal.GetAt(1); json_mesh_normals.Insert(normal_y);
Number normal_z = normal.GetAt(2); json_mesh_normals.Insert(normal_z);
if (uvs) {
int mesh_index = mesh->GetTextureUVIndex(poly_index, vertex_index);
KFbxVector2 uv = uvs->GetDirectArray().GetAt(mesh_index);
Number uv_x = 1.0f-uv[0]; json_mesh_uvs.Insert(uv_x); // these are flipped
Number uv_y = 1.0f-uv[1]; json_mesh_uvs.Insert(uv_y);
}
}
}
json_mesh["vertices"] = json_mesh_vertices;
json_mesh["normals"] = json_mesh_normals;
json_mesh["uvs"] = json_mesh_uvs;
}
{
fbxDouble3 scale = fbx_node->LclScaling.Get();
Object json_mesh_scale;
json_mesh_scale["x"] = Number(scale[0]);
json_mesh_scale["y"] = Number(scale[1]);
json_mesh_scale["z"] = Number(scale[2]);
json_mesh["scale"] = json_mesh_scale;
}
{
fbxDouble3 translation = fbx_node->LclTranslation.Get();
Object json_mesh_translation;
json_mesh_translation["x"] = Number(translation[0]);
json_mesh_translation["y"] = Number(translation[1]);
json_mesh_translation["z"] = Number(translation[2]);
json_mesh["translation"] = json_mesh_translation;
}
{
fbxDouble3 rotation = fbx_node->LclRotation.Get();
Object json_mesh_rotation;
json_mesh_rotation["x"] = Number(rotation[0]);
json_mesh_rotation["y"] = Number(rotation[1]);
json_mesh_rotation["z"] = Number(rotation[2]);
json_mesh["rotation"] = json_mesh_rotation;
}
{
int material_count = fbx_node->GetMaterialCount();
Array json_mesh_materials;
for (int material_index = 0; material_index < material_count; material_index++) {
KFbxSurfaceMaterial* surface_material = fbx_node->GetMaterial(material_index);
Object json_material;
Array json_textures;
int textureIndex = 0;
FOR_EACH_TEXTURE(textureIndex) {
KFbxProperty property = surface_material->FindProperty(KFbxLayerElement::TEXTURE_CHANNEL_NAMES[textureIndex]);
int layered_texture_count = property.GetSrcObjectCount(KFbxTexture::ClassId);
for (int layered_texture_index = 0; layered_texture_index < layered_texture_count; ++layered_texture_index) {
KFbxTexture* texture = KFbxCast <KFbxTexture> (property.GetSrcObject(KFbxTexture::ClassId, layered_texture_index));
if(texture) {
KFbxFileTexture *file_texture = KFbxCast<KFbxFileTexture>(texture);
if (file_texture) {
Object json_texture;
json_texture["filename"] = String(file_texture->GetFileName());
json_textures.Insert(json_texture);
}
}
}
}
json_material["textures"] = json_textures;
KFbxSurfaceLambert* lambert_material = KFbxCast<KFbxSurfaceLambert>(surface_material);
if (lambert_material) {
Object diffuse;
double diffuse_r = lambert_material->Diffuse.Get()[0];
diffuse["r"] = Number(diffuse_r);
double diffuse_g = lambert_material->Diffuse.Get()[1];
diffuse["g"] = Number(diffuse_g);
double diffuse_b = lambert_material->Diffuse.Get()[2];
diffuse["b"] = Number(diffuse_b);
json_material["diffuse"] = diffuse;
Object ambient;
double ambient_r = lambert_material->Ambient.Get()[0];
ambient["r"] = Number(ambient_r);
double ambient_g = lambert_material->Ambient.Get()[1];
ambient["g"] = Number(ambient_g);
double ambient_b = lambert_material->Ambient.Get()[2];
ambient["b"] = Number(ambient_b);
json_material["ambient"] = ambient;
KFbxProperty specular_property = lambert_material->FindProperty("SpecularColor");
fbxDouble3 specular_data;
specular_property.Get(&specular_data, eDOUBLE3);
Object specular;
float specular_r = specular_data[0];
specular["r"] = Number(specular_r);
float specular_g = specular_data[1];
specular["g"] = Number(specular_g);
float specular_b = specular_data[2];
specular["b"] = Number(specular_b);
json_material["specular"] = specular;
}
json_mesh_materials.Insert(json_material);
}
json_mesh["materials"] = json_mesh_materials;
}
json_mesh["uv_stride"] = Number(2);
json_mesh["vertex_stride"] = Number(3);
json_mesh["normal_stride"] = Number(3);
meshes_array.Insert(json_mesh);
}
for(int j = 0; j < fbx_node->GetChildCount(); j++) {
recurse_over_model(fbx_node->GetChild(j), meshes_array);
}
}