A_QEM=0,/**< Approximates the geometry of an edge collapse by quadric error metric minimization [GH97]. */
A_MidEdge=1,/**< Approximates the geometry of an edge collapse by placing the resulting vertex in its middle. */
A_CornerCutting=2,
A_TangentPredict1=3,
A_TangentPredict2=4,
A_NormalArea=5,/**< EXPERIMENTAL Approximates the geometry of an edge collapse by minimization of its normal times area measure [Sauvage] */
// Geometry + color approximators
A_ColorNaive=6,/**< Approximates the color of the resulting vertex by linear interpolation (based on the approximated position) of its two predecessors. */
A_ColorQEMext=7,/**< Approximates both geometry and color of the resulting vertex by minimization of the extended (R^6) quadric error metric [GH98]. */
A_GeomColorOpt=8,/**< EXPERIMENTAL. */
// One approx per half-edge
// Generic (considers all provided attributes) approximator
A_hHalfCollapse=9,/**< Approximates all provided attributes of a half-edge collapse by keeping the attributes of the first of two vertices. */
// Geometry approximator
A_hQEM=10,/**< Approximates the geometry of a full-edge collapse by quadric error metric minimization [GH97]. Compatible version for half-edge selectors. */
* Function that decimates the provided mesh through successive edge collapses
* by using a declared selector and approximator type (see \file approximator.h and \file selector.h).
*
* \param map the map to decimate
* \param s the SelectorType
* \param a the ApproximatorType
* \param position the vertex position embeddings
* \param nbWantedVertices the aimed amount of vertices after decimation
* \param edgeErrors will (if not null) contain the edge errors computed by the approximator/selector (default NULL)
* \param callback_wrapper a callback function for progress monitoring (default NULL)
* \param callback_object the object to call the callback on (default NULL)
*
* \return >= 0 if finished correctly : 1 if no more edges are collapsible, 0 is nbWantedVertices achieved, -1 if the initialisation of the selector failed
* Function that decimates the provided mesh through successive edge collapses
* by providing the selector and the approximators
*
* \param map the map to decimate
* \param s the selector
* \param a a vector containing the approximators
* \param nbWantedVertices the aimed amount of vertices after decimation
* \param recomputePriorityList if false and a priority list exists, it is not recomputed
* \param edgeErrors will (if not null) contain the edge errors computed by the approximator/selector (default NULL)
* \param callback_wrapper a callback function for progress monitoring (default NULL)
* \param callback_object the object to call the callback on (default NULL)
*
* \return >= 0 if finished correctly : 1 if no more edges are collapsible, 0 is nbWantedVertices achieved, -1 if the initialisation of the selector failed
