Color mapping in Scatterplot and initial measures.

- Scatterplot: can now map any floating point data to colors;
- Scatterplot: somewhat optimized geometry/material updates;
- Removed anything related to labels where it was not necessary;
- Added observers to implement distortion (via measures) visualization;
- Added skeleton implementations of NP and silhouette.

1 files changed, 27 insertions, 0 deletions

diff --git a/distortionobserver.cpp b/distortionobserver.cpp
new file mode 100644
index 0000000..a6c5ba4
--- /dev/null
+++ b/distortionobserver.cpp
@@ -0,0 +1,27 @@
+#include "distortionobserver.h"
+
+#include "mp.h"
+
+DistortionObserver::DistortionObserver(const arma::mat &X,
+                                       const arma::uvec &sampleIndices)
+    : m_X(X)
+    , m_sampleIndices(sampleIndices)
+{
+    m_distX = mp::dist(m_X);
+}
+
+DistortionObserver::~DistortionObserver()
+{
+}
+
+void DistortionObserver::setMap(const arma::mat &Y)
+{
+    arma::vec measures = measureFunc(m_distX, mp::dist(Y));
+
+    if (m_Y.n_elem != 0) {
+        emit mapChanged(measures - m_measures);
+    } else {
+        m_Y = Y;
+        m_measures = measures;
+    }
+}