TTexturePtr AssimpLoader::LoadTexture(const CFile& file)
{
TTexturePtr texturePtr;
try
{
texturePtr = Texture::LoadFromFile(file.Filename());
} catch (CException e)
{
texturePtr = Texture::LoadFromFile("unknowTexture.tga");
}
return texturePtr;
}
void AssimpLoader::BuildGroup(IMeshSceneNode* meshSceneNode,
const aiScene* scene, aiNode* nd, const Math::CMatrix4& matrixUpp)
{
// Load transformation
struct aiMatrix4x4 m = nd->mTransformation;
//aiTransposeMatrix4(&m);
Math::CMatrix4 matrixLocalTrans = Math::CMatrix4(m.a1, m.a2, m.a3, m.a4,
m.b1, m.b2, m.b3, m.b4, m.c1, m.c2, m.c3, m.c4, m.d1, m.d2, m.d3,
m.d4);
Math::CMatrix4 globalTransformation = matrixLocalTrans * matrixUpp;
// draw all meshes assigned to this node
for (unsigned int n = 0; n < nd->mNumMeshes; ++n)
{
/*
* Construct the Object
*/
const struct aiMesh* mesh = scene->mMeshes[nd->mMeshes[n]];
if (mesh->mNumFaces == 0)
{
Logger::Log() << "[INFO] Skip assimp mesh. No faces. \n";
continue;
}
RenderableObject* assimpMesh = new RenderableObject;
// Build the indice faces
std::vector<unsigned int> indicesVector;
std::vector<float> vertexVector;
unsigned int maxIndice = 0;
for (unsigned int t = 0; t < mesh->mNumFaces; ++t)
{
// Get a face elements
const struct aiFace* face = &mesh->mFaces[t];
if (face->mNumIndices != 3)
{
Logger::Log() << "[Warning] More or less indices faces ("
<< face->mNumIndices << "). \n";
continue;
}
// Get all informations
for (int i = 0; i < face->mNumIndices; i++)
{
int index = face->mIndices[i];
indicesVector.push_back(index);
maxIndice = std::max(maxIndice, face->mIndices[i]);
}
}
// Create the indice array
unsigned int * indiceArray = new unsigned int[indicesVector.size()];for
( unsigned int i = 0; i < indicesVector.size(); i++)
{
indiceArray[i] = indicesVector[i];
}
// Set all buffers
// * Indice Buffer
Logger::Log() << "[INFO] Add indice buffer : " << indicesVector.size()
<< "\n";
assimpMesh->SetIndiceBuffer(indiceArray, indicesVector.size());
// * Vertex buffer
Logger::Log() << "[INFO] Add Vertex buffer ... \n";
RenderableObject::RenderableBuffer buffer;
buffer.buffer = &mesh->mVertices[0].x;
buffer.dimension = 3;
buffer.size = maxIndice * 3 + 3;
buffer.owner = false;
Logger::Log() << " * size : " << buffer.size << "\n";
assimpMesh->AddBuffer(buffer, VERTEX_ATTRIBUT);
// * Normal buffer
if (mesh->HasNormals())
{
buffer.buffer = &mesh->mNormals[0].x;
assimpMesh->AddBuffer(buffer, NORMAL_ATTRIBUT);
}
// * Tangentes and bitangantes
if (mesh->HasTangentsAndBitangents())
{
buffer.buffer = &mesh->mTangents[0].x;
assimpMesh->AddBuffer(buffer, TANGENT_ATTRIBUT);
buffer.buffer = &mesh->mBitangents[0].x;
assimpMesh->AddBuffer(buffer, BITANGENT_ATTRIBUT);
}
// * Couleurs
if (mesh->GetNumColorChannels() > 0) //FIXME : Verfier le Loader ...
{
// TODO: Gestion des couleurs multiples
if (mesh->GetNumColorChannels() > 1)
{
throw CException("Too Color Channels");
}
else
{
buffer.size = maxIndice * 3 + 3;
buffer.owner = true;
buffer.dimension = 3;
float * ColorArray = new float[maxIndice * 3 + 3];for
( int i = 0; i < maxIndice+1; i++)
{
ColorArray[i*3] = mesh->mColors[0][i].r;
ColorArray[i*3+1] = mesh->mColors[0][i].g;
ColorArray[i*3+2] = mesh->mColors[0][i].b;
}
buffer.buffer = ColorArray;
assimpMesh->AddBuffer(buffer, COLOR_ATTRIBUT);
}
}
// * UV Coords
if (mesh->GetNumUVChannels() > 0)
{
// TODO: Gestion des materiaux multiples
if (mesh->GetNumUVChannels() > 1)
{
throw CException("Too UV Channels");
}
else
{
buffer.size = maxIndice * 2 + 2;
buffer.owner = true;
buffer.dimension = 2;
float * UVArray = new float[maxIndice * 2 + 2];for
( int i = 0; i < maxIndice+1; i++)
{
UVArray[i*2] = mesh->mTextureCoords[0][i].x;
UVArray[i*2+1] = mesh->mTextureCoords[0][i].y;
}
buffer.buffer = UVArray;
assimpMesh->AddBuffer(buffer, TEXCOORD_ATTRIBUT);
// Load diffuse image
const struct aiMaterial* material =
scene->mMaterials[mesh->mMaterialIndex];
if (material->GetTextureCount(aiTextureType_DIFFUSE) > 0)
{
aiString AiPath;
material->GetTexture(aiTextureType_DIFFUSE, 0, &AiPath);
CFile texturePath = std::string(AiPath.data);
Logger::Log() << "[INFO] Diffuse texture : "
<< texturePath.Filename() << "\n";
assimpMesh->AddTextureMap(DIFFUSE_TEXTURE,
LoadTexture(texturePath));
}
if (material->GetTextureCount(aiTextureType_SPECULAR) > 0)
{
aiString AiPath;
material->GetTexture(aiTextureType_SPECULAR, 0, &AiPath);
CFile texturePath = std::string(AiPath.data);
Logger::Log() << "[INFO] Specular Texture : "
<< texturePath.Filename() << "\n";
assimpMesh->AddTextureMap(SPECULAR_TEXTURE,
LoadTexture(texturePath));
}
//TODO: Desactivation du bump mapping
// if(material->GetTextureCount(aiTextureType_HEIGHT)>0)
// {
// aiString AiPath;
// material->GetTexture(aiTextureType_HEIGHT, 0, &AiPath);
// CFile texturePath = std::string(AiPath.data);
// Logger::Log() << "[INFO] Normal texture : " << texturePath.Filename() << "\n";
// assimpMesh->AddTextureMap(NORMAL_TEXTURE, LoadTexture(texturePath));
// }
}
}
// Chargement des materiaux
GetMaterialPropreties(assimpMesh,
scene->mMaterials[mesh->mMaterialIndex]);
// Check if is an Instance
bool foundInstance = false;
//TODO: Reactivativate instance system
// for(CachedAssimpMeshMap::iterator it = m_cached_geom.begin(); it != m_cached_geom.end(); it++)
// {
// if((*it)->IsInstance(*assimpMesh))
// {
// (*it)->SetInstance(*assimpMesh);
// foundInstance = true;
// break;
// }
// }
if (foundInstance)
{
Logger::Log() << "[INFO] Found an Instance ... \n";
Assert(false);
}
else
{
// Compile all buffers
Logger::Log() << "[INFO] Compile all buffers ... \n";
assimpMesh->CompileBuffers();
Logger::Log() << "[INFO] Add cached resources : " << nd->mMeshes[n]
<< "\n";
m_cached_geom.push_back(assimpMesh);
}
// Attach to group
Logger::Log() << "[INFO] Add to father node... \n";
meshSceneNode->AddRenderableObject(assimpMesh, globalTransformation);
}
// Add all childrens
for (int n = 0; n < nd->mNumChildren; ++n)
{
BuildGroup(meshSceneNode, scene, nd->mChildren[n],
globalTransformation);
}
}
