void Object::computeBlendedNormals(void){	unsigned int faceNum;			//Holds the current face num	Vector3D normal;				//Holds the current vertex blended normal.	Vector3D faceNormal;			//Holds the current face normal	unsigned int i;					//Loop index	Face face;						//Holds the current face.		for(faceNum=0;faceNum<face_list.size();faceNum++)	{		face = face_list[faceNum];		faceNormal = computeFaceNormal(face);				//compute for every vertex in the face its blended normal		for(i=0;i<3;i++)		{            normal = computeVertexBlendedNormal(face,faceNormal);			face.setNormal(i,normal);		}		face_list[faceNum]=face;	}}Vector3D Object::computeVertexBlendedNormal(unsigned int vertexNum,Vector3D &vNormal){	Face face;					//Holds the current tested faces    unsigned int faceNum;		//Holds the current face number that we test.	Vector3D faceNormal;		//Holds the current face normal	Vector3D blendNormal;		//Holds the result blended normal	for(faceNum=0;faceNum<face_list.size();faceNum++)	{		face = face_list.at(faceNum);		//if this is a neighbor face		if((face[0]==vertexNum)||(face[1]==vertexNum)||(face[2]==vertexNum))		{			faceNormal = computeFaceNormal(face);			if(vNormal.dotProduct(faceNormal)>=0.71)			{				blendNormal = vNormal+faceNormal;			}		}	}	blendNormal = blendNormal - vNormal;	//we added twice the normal of the vertex	blendNormal.normalize();	return blendNormal;}