comparison layer/Colour3DPlotLayer.cpp @ 193:57c2350a8c40

* Add slice layers (so you can display a slice of a colour 3d plot as if it were
  a spectrum)
* Make spectrum layer a subclass of slice layer

 
 //#define DEBUG_COLOUR_3D_PLOT_LAYER_PAINT 1
 
 
 Colour3DPlotLayer::Colour3DPlotLayer() :
-    Layer(),
     m_model(0),
     m_cache(0),
     m_colourScale(LinearScale)
 {
     

 }
 
 void
 Colour3DPlotLayer::setModel(const DenseThreeDimensionalModel *model)
 {
+    if (m_model == model) return;
+    const DenseThreeDimensionalModel *oldModel = m_model;
     m_model = model;
     if (!m_model || !m_model->isOK()) return;
 
     connect(m_model, SIGNAL(modelChanged()), this, SIGNAL(modelChanged()));
     connect(m_model, SIGNAL(modelChanged(size_t, size_t)),

     connect(m_model, SIGNAL(modelChanged()), this, SLOT(cacheInvalid()));
     connect(m_model, SIGNAL(modelChanged(size_t, size_t)),
 	    this, SLOT(cacheInvalid(size_t, size_t)));
 
     emit modelReplaced();
+    emit sliceableModelReplaced(oldModel, model);
 }
 
 void
 Colour3DPlotLayer::cacheInvalid()
 {