Move visualiser generation out of main.

src/visualisations.cpp

@@ -0,0 +1,22 @@
+//
+// Created by bert on 09/02/18.
+//
+
+#include "visualisations.hpp"
+#include "DummyLayerVisualisation.hpp"
+#include "MultiImageVisualisation.hpp"
+#include "FlatLayerVisualisation.hpp"
+
+fmri::LayerVisualisation *fmri::getVisualisationForLayer(const fmri::LayerData &layer)
+{
+    switch (layer.shape().size()) {
+        case 2:
+            return new FlatLayerVisualisation(layer, FlatLayerVisualisation::Ordering::SQUARE);
+
+        case 4:
+            return new MultiImageVisualisation(layer);
+
+        default:
+            return new DummyLayerVisualisation();
+    }
+}