Add ExampleSourceAndConverter4D, lifted from #40

src/test/java/bdv/util/ExampleSourceAndConverter4D.java

@@ -0,0 +1,42 @@
+package bdv.util;
+
+import bdv.viewer.SourceAndConverter;
+import net.imglib2.converter.Converter;
+import net.imglib2.display.ColorConverter;
+import net.imglib2.display.RealARGBColorConverter;
+import net.imglib2.display.ScaledARGBConverter;
+import net.imglib2.img.Img;
+import net.imglib2.img.array.ArrayImg;
+import net.imglib2.img.array.ArrayImgs;
+import net.imglib2.img.basictypeaccess.array.IntArray;
+import net.imglib2.type.numeric.ARGBType;
+import net.imglib2.type.numeric.NumericType;
+import net.imglib2.type.numeric.RealType;
+import net.imglib2.type.numeric.integer.IntType;
+import net.imglib2.util.Util;
+
+import java.util.Random;
+
+public class ExampleSourceAndConverter4D
+{
+	public static void main( String[] args )
+	{
+		System.setProperty( "apple.laf.useScreenMenuBar", "true" );
+
+		final Random random = new Random();
+
+		final int numTimePoints = 5;
+		final Img< IntType > ints = ArrayImgs.ints( 100, 100, 100, numTimePoints );
+		ints.forEach( t -> t.set( random.nextInt( 65535 ) ) );
+
+		final IntType type = new IntType();
+		final RandomAccessibleIntervalSource4D< IntType > raiSource4D =
+				new RandomAccessibleIntervalSource4D<>( ints, type, "4d rai source" );
+		final RealARGBColorConverter< IntType > colorConverter =
+				RealARGBColorConverter.create( type, 0, 65535 );
+		final SourceAndConverter< IntType > sourceAndConverter =
+				new SourceAndConverter<>( raiSource4D, colorConverter );
+
+		BdvFunctions.show( sourceAndConverter, numTimePoints );
+	}
+}