add getCache() to ViewerImgLoader interface

src/main/java/bdv/BigDataViewer.java

@@ -31,7 +31,6 @@ import org.jdom2.output.XMLOutputter;
 
 import bdv.export.ProgressWriter;
 import bdv.export.ProgressWriterConsole;
-import bdv.img.catmaid.CatmaidImageLoader;
 import bdv.tools.HelpDialog;
 import bdv.tools.InitializeViewerState;
 import bdv.tools.RecordMovieDialog;
@@ -173,7 +172,7 @@ public class BigDataViewer
 		initSetups( loader, converterSetups, sources );
 
 		viewerFrame = new ViewerFrame( width, height, sources, seq.numTimepoints(),
-				( ( CatmaidImageLoader ) seq.imgLoader ).getCache() );
+				( ( ViewerImgLoader< ?, ? > ) seq.imgLoader ).getCache() );
 		viewer = viewerFrame.getViewerPanel();
 
 		for ( final ConverterSetup cs : converterSetups )

src/main/java/bdv/ViewerImgLoader.java

@@ -4,6 +4,7 @@ import mpicbg.spim.data.ImgLoader;
 import mpicbg.spim.data.View;
 import net.imglib2.RandomAccessibleInterval;
 import net.imglib2.Volatile;
+import bdv.img.cache.Cache;
 
 public interface ViewerImgLoader< T, V extends Volatile< T > > extends ImgLoader< T >
 {
@@ -18,4 +19,6 @@ public interface ViewerImgLoader< T, V extends Volatile< T > > extends ImgLoader
 	public double[][] getMipmapResolutions( final int setup );
 
 	public int numMipmapLevels( final int setup );
+
+	public Cache getCache();
 }

src/main/java/bdv/img/catmaid/CatmaidImageLoader.java

@@ -15,7 +15,6 @@ import net.imglib2.type.volatiles.VolatileARGBType;
 import org.jdom2.Element;
 
 import bdv.ViewerImgLoader;
-import bdv.img.cache.Cache;
 import bdv.img.cache.VolatileCell;
 import bdv.img.cache.VolatileGlobalCellCache;
 import bdv.img.cache.VolatileGlobalCellCache.LoadingStrategy;
@@ -160,7 +159,8 @@ public class CatmaidImageLoader implements ViewerImgLoader< ARGBType, VolatileAR
 		return img;
 	}
 
-	public Cache getCache()
+	@Override
+	public VolatileGlobalCellCache< VolatileIntArray > getCache()
 	{
 		return cache;
 	}

src/main/java/bdv/img/hdf5/Hdf5ImageLoader.java

@@ -259,6 +259,7 @@ public class Hdf5ImageLoader implements ViewerImgLoader< UnsignedShortType, Vola
 		return img;
 	}
 
+	@Override
 	public VolatileGlobalCellCache< VolatileShortArray > getCache()
 	{
 		return cache;

src/main/java/bdv/img/remote/RemoteImageLoader.java

@@ -116,6 +116,7 @@ public class RemoteImageLoader implements ViewerImgLoader< UnsignedShortType, Vo
 		return img;
 	}
 
+	@Override
 	public VolatileGlobalCellCache< VolatileShortArray > getCache()
 	{
 		return cache;