Construction issue

[glsl09]

ModelLoader.h

//..................................
struct Mesh
{
	unsigned int* indices;
	float* vertices;
	Matrix4x4 matrix;
	unsigned int numVertex;
	unsigned int numFace;
};

int loadNode(const aiScene* scene, aiNode* ptr, Mesh* mesh, unsigned int j =0);

class Scene
{
public:
	Scene(const char* fileName);
public:
	unsigned int numMesh;
	Mesh* mesh;

};

ModelLoader.cpp

Scene::Scene(const char* fileName) : numMesh(0), mesh(0)
{
	Assimp::Importer importer;

	 const aiScene* scene = importer.ReadFile( fileName, 
        aiProcess_CalcTangentSpace       | 
        aiProcess_Triangulate            |
        aiProcess_JoinIdenticalVertices  |
        aiProcess_SortByPType);

	 numMesh = scene->mNumMeshes;
	 mesh = new Mesh[numMesh];
	 loadNode(scene, scene->mRootNode, mesh);

}

int loadNode(const aiScene* scene, aiNode* ptr, Mesh* mesh, unsigned int j)
{
	unsigned int numMesh = ptr->mNumMeshes;
	if(numMesh > 0)
	{

		Matrix4x4 tempMatrix;
		Matrix4x4 parentMatrix;
		for(unsigned int i = 0; i < numMesh; ++i)
		{
			unsigned int meshID = ptr->mMeshes[i];
			mesh[j].numVertex = scene->mMeshes[meshID]->mNumVertices;
			mesh[j].numFace   = scene->mMeshes[meshID]->mNumFaces;
			mesh[j].vertices  = new float[3*mesh[j].numVertex];
			mesh[j].indices   = new unsigned int[3*mesh[j].numFace];


			tempMatrix.setMatrix(ptr->mTransformation.a1, ptr->mTransformation.a2, ptr->mTransformation.a3, ptr->mTransformation.a4,
							 ptr->mTransformation.b1, ptr->mTransformation.b2, ptr->mTransformation.b3, ptr->mTransformation.b4,
							 ptr->mTransformation.c1, ptr->mTransformation.c2, ptr->mTransformation.c3, ptr->mTransformation.c4,
							 ptr->mTransformation.d1, ptr->mTransformation.d2, ptr->mTransformation.d3, ptr->mTransformation.d4);			

			aiNode* parentNode = ptr->mParent;
			while(parentNode != NULL)
			{
				parentMatrix.setMatrix(parentNode->mTransformation.a1, parentNode->mTransformation.a2, parentNode->mTransformation.a3, parentNode->mTransformation.a4,
									   parentNode->mTransformation.b1, parentNode->mTransformation.b2, parentNode->mTransformation.b3, parentNode->mTransformation.b4,
									   parentNode->mTransformation.c1, parentNode->mTransformation.c2, parentNode->mTransformation.c3, parentNode->mTransformation.c4,
									   parentNode->mTransformation.d1, parentNode->mTransformation.d2, parentNode->mTransformation.d3, parentNode->mTransformation.d4);
				tempMatrix =  parentMatrix * tempMatrix;
				parentNode = parentNode->mParent;
			}

			mesh[j].matrix = tempMatrix;
				//Vertex datayı al
			for(unsigned int i = 0; i < mesh[j].numVertex; ++i)
			{
				mesh[j].vertices[3*i]   = scene->mMeshes[meshID]->mVertices[i].x;
				mesh[j].vertices[3*i+1] = scene->mMeshes[meshID]->mVertices[i].y;
				mesh[j].vertices[3*i+2] = scene->mMeshes[meshID]->mVertices[i].z;
			}
				//index datayı al
			for(unsigned int i = 0; i < mesh[j].numFace; ++i)
			{
				mesh[j].indices[3*i]   = scene->mMeshes[meshID]->mFaces[i].mIndices[0];
				mesh[j].indices[3*i+1] = scene->mMeshes[meshID]->mFaces[i].mIndices[1];
				mesh[j].indices[3*i+2] = scene->mMeshes[meshID]->mFaces[i].mIndices[2];
			}

			++j;
		}

	}


	unsigned int numChild = ptr->mNumChildren;
	if(numChild > 0)
	{
		aiNode** child = ptr->mChildren;
		for(unsigned int i = 0; i < numChild; ++i)
		{
			loadNode(scene, child[i], mesh, j);
		}
	}
	return 1;
}

Matrix4x4 class has attribution following

class Matrix4x4
{
public:
Matrix4x4(); // !!! make identity matrix
Matrix4x4(const float* arr);
Matrix4x4(const Matrix4x4& matrix1);
Matrix4x4(const Matrix3x3& matrix1);
...........................................
...........................................
Matrix4x4& operator=(const Matrix4x4& matrix1);

public:
float m[16];
};


i make matrix and mesh computing in recursive loadNode() function. when matrix comptuion done in loadNode(). i control each mesh's matrix in loadNode(). all matrix computing is OK. but if i control each mesh's matrix after loadNode() execution i get wrong matrix that is identity matrix. where is the problem. i apologize for my english
thanks in advance