comparison layer/LayerFactory.h @ 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

 	TimeValues,
 	Notes,
 	Text,
 	Colour3DPlot,
         Spectrum,
+        Slice,
 
 	// Layers with different initial parameters
 	MelodicRangeSpectrogram,
 	PeakFrequencySpectrogram,
 

     LayerType getLayerType(const Layer *);
 
     Layer *createLayer(LayerType type);
 
     QString getLayerPresentationName(LayerType type);
+
+    bool isLayerSliceable(const Layer *);
 
     void setModel(Layer *layer, Model *model);
     Model *createEmptyModel(LayerType type, Model *baseModel);
 
     int getChannel(Layer *layer);