These just provide access to the point data in a clean way

Standard STL read-only container stuff

* \brief Project a 3D point (\a x,\a y,\a z) to the image plane in (\a u,\a v) * * \param P 3D point coordinates * \param p return value, contains

* Returns whether the node is a leaf node * @return true iff the node is a leaf */

* \brief Lifts a point from the image plane to its projective ray * * \param p image coordinates * \param P coordinates of the projective ray */

Add a point to the spline, and invalidate it so its recalculated on the next access