* @param filename: the ply file to be imported. This file is supposed to have a three position, three normal and at least three radiance scalars per vertex.
* \brief reads the list of vertices in a radiance PLY file. The function is template of the type of arithmetic (float, double) used in the file to be read
* \param fp IN: the file pointer descriptor
* \param binary IN: binary mode for reading fp
* \param nbVertices IN: the number of vertices to read
* \param nbProps IN: the number of properties according to the header
* \param positions IN/OUT: the positions container
* \param normals IN/OUT: the normals container
* \param radiances IN/OUT: the radiances container
* \param verticesID IN/OUT: the vector of vertex IDs