Optimized InteractionHandler to minimze allocations; view updates now happen whenever a point is moved.

1 files changed, 4 insertions, 7 deletions

diff --git a/interactionhandler.cpp b/interactionhandler.cpp
index 217f4a5..5225be9 100644
--- a/interactionhandler.cpp
+++ b/interactionhandler.cpp
@@ -8,24 +8,21 @@ InteractionHandler::InteractionHandler(const arma::mat &X,
     : m_X(X)
     , m_labels(labels)
     , m_sampleIndices(sampleIndices)
+    , m_Y(X.n_rows, 3)
     , m_technique(TECHNIQUE_LAMP)
 {
+    m_Y.col(2) = m_labels;
 }
 
 void InteractionHandler::setSubsample(const arma::mat &Ys)
 {
-    arma::mat embedding(m_X.n_rows, Ys.n_cols);
     switch (m_technique) {
     case TECHNIQUE_PLMP:
     case TECHNIQUE_LSP:
     case TECHNIQUE_LAMP:
-        embedding = mp::lamp(m_X, m_sampleIndices, Ys);
+        m_Y.cols(0, 1) = mp::lamp(m_X, m_sampleIndices, Ys);
         break;
     }
 
-    arma::mat Y(embedding.n_rows, embedding.n_cols + 1);
-    Y.cols(0, embedding.n_cols - 1) = embedding;
-    Y.col(Y.n_cols - 1) = m_labels;
-
-    emit subsampleChanged(Y);
+    emit subsampleChanged(m_Y);
 }