Add voxelization algorithm from @kephale

And improve the test to make varying the sphere radius simpler.

Migrated from imagej/imagej-ops#653.

See also imagej/imagej-ops#422.

Co-authored-by: Kyle Harrington <[email protected]>

Author: ctrueden

pom.xml

@@ -160,6 +160,11 @@
 			<artifactId>junit</artifactId>
 			<scope>test</scope>
 		</dependency>
+		<dependency>
+			<groupId>net.imglib2</groupId>
+			<artifactId>imglib2-algorithm</artifactId>
+			<scope>test</scope>
+		</dependency>
 		<dependency>
 			<groupId>net.imglib2</groupId>
 			<artifactId>imglib2-roi</artifactId>