From a9212ec76125411c52d1dc7bc1bbc403cb808b6b Mon Sep 17 00:00:00 2001
From: tpietzsch <tobias.pietzsch@gmail.com>
Date: Fri, 6 Sep 2024 23:59:46 +0200
Subject: [PATCH] Add convenience default method PrimitveBlocks.copy(Interval,
 Object)

---
 .../net/imglib2/blocks/PrimitiveBlocks.java   | 23 +++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/src/main/java/net/imglib2/blocks/PrimitiveBlocks.java b/src/main/java/net/imglib2/blocks/PrimitiveBlocks.java
index 927287d79..3e3eab291 100644
--- a/src/main/java/net/imglib2/blocks/PrimitiveBlocks.java
+++ b/src/main/java/net/imglib2/blocks/PrimitiveBlocks.java
@@ -35,8 +35,12 @@
 
 import static net.imglib2.blocks.PrimitiveBlocks.OnFallback.FAIL;
 import static net.imglib2.blocks.PrimitiveBlocks.OnFallback.WARN;
+import static net.imglib2.util.Util.safeInt;
+
+import java.util.Arrays;
 
 import net.imglib2.EuclideanSpace;
+import net.imglib2.Interval;
 import net.imglib2.RandomAccessible;
 import net.imglib2.Typed;
 import net.imglib2.type.NativeType;
@@ -138,6 +142,25 @@ default void copy( int[] srcPos, Object dest, int[] size )
 		copy( Util.int2long( srcPos ), dest, size );
 	}
 
+	/**
+	 * Copy a block from the ({@code T}-typed) source into primitive arrays (of
+	 * the appropriate type).
+	 *
+	 * @param interval
+	 * 		the block to copy
+	 * @param dest
+	 * 		primitive array to copy into. Must correspond to {@code T}, for
+	 * 		example, if {@code T} is {@code UnsignedByteType} then {@code dest} must
+	 * 		be {@code byte[]}.
+	 */
+	default void copy( Interval interval, Object dest )
+	{
+		final long[] srcPos = interval.minAsLongArray();
+		final int[] size = new int[ srcPos.length ];
+		Arrays.setAll( size, d -> safeInt( interval.dimension( d ) ) );
+		copy( srcPos, dest, size );
+	}
+
 	/**
 	 * Get a thread-safe version of this {@code PrimitiveBlocks}.
 	 * (Implemented as a wrapper that makes {@link ThreadLocal} copies).