Provide Clusterer method for setting parameters (#172)

Author: sbaldu

include/CLUEstering/core/Clusterer.hpp

@@ -101,7 +101,7 @@ namespace clue {
     /// @param dc Distance threshold for clustering
     /// @param rhoc Density threshold for clustering
     /// @param dm Minimum distance between clusters
-    /// @param seed_dc Distance threshold for seed points, if -1.f, dc is used
+    /// @param seed_dc Distance threshold for seed points, if the default value -1.f, dc is used
     /// @param pPBin Number of points per bin, used to determine the tile size
     Clusterer(Queue& queue, float dc, float rhoc, float dm, float seed_dc = -1.f, int pPBin = 128);
     /// @brief Constuct a Clusterer object
@@ -111,7 +111,7 @@ namespace clue {
     /// @param dc Distance threshold for clustering
     /// @param rhoc Density threshold for clustering
     /// @param dm Minimum distance between clusters
-    /// @param seed_dc Distance threshold for seed points, if -1.f, dc is used
+    /// @param seed_dc Distance threshold for seed points, if the default value -1.f, dc is used
     /// @param pPBin Number of points per bin, used to determine the tile size
     Clusterer(Queue& queue,
               TilesDevice* tile_buffer,
@@ -121,6 +121,15 @@ namespace clue {
               float seed_dc = -1.f,
               int pPBin = 128);
 
+    /// @brief Set the parameters for the clustering algorithm
+    ///
+    /// @param dc Distance threshold for clustering
+    /// @param rhoc Density threshold for clustering
+    /// @param dm Minimum distance between clusters
+    /// @param seed_dc Distance threshold for seed points, if the defualt value -1.f, dc is used
+    /// @param pPBin Number of points per bin, used to determine the tile size
+    void setParameters(float dc, float rhoc, float dm, float seed_dc = -1.f, int pPBin = 128);
+
     /// @brief Construct the clusters from host points
     ///
     /// @param h_points Host points to cluster

include/CLUEstering/core/detail/Clusterer.hpp

@@ -69,6 +69,15 @@ namespace clue {
     init_device(queue, tile_buffer);
   }
 
+  template <uint8_t Ndim>
+  void Clusterer<Ndim>::setParameters(float dc, float rhoc, float dm, float seed_dc, int pPBin) {
+    m_dc = dc;
+    m_seed_dc = seed_dc < 0.f ? dc : seed_dc;
+    m_rhoc = rhoc;
+    m_dm = dm;
+    m_pointsPerTile = pPBin;
+  }
+
   template <uint8_t Ndim>
   template <typename KernelType>
   inline void Clusterer<Ndim>::make_clusters(PointsHost& h_points,