create object to make mask creation easier

src/main/java/ai/nets/samj/annotation/Mask.java

@@ -0,0 +1,60 @@
+/*-
+ * #%L
+ * Library to call models of the family of SAM (Segment Anything Model) from Java
+ * %%
+ * Copyright (C) 2024 SAMJ developers.
+ * %%
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * #L%
+ */
+package ai.nets.samj.annotation;
+
+import java.awt.Polygon;
+import java.util.List;
+
+import net.imglib2.RandomAccessibleInterval;
+import net.imglib2.type.numeric.integer.UnsignedByteType;
+
+/**
+ * Class that contains the information required to create the contour and mask about the object annotated in an image
+ * in a fast and efficient manner.
+ * 
+ * @author Carlos Garcia Lopez de Haro
+ */
+public class Mask {
+
+	private final Polygon contour;
+
+	private final long[] rleEncoding;
+
+	private Mask(Polygon contour, long[] rleEncoding) {
+		this.contour = contour;
+		this.rleEncoding = rleEncoding;
+	}
+
+	public static Mask build(Polygon contour, long[] rleEncoding) {
+		return new Mask(contour, rleEncoding);
+	}
+
+	public Polygon getContour() {
+		return this.contour;
+	}
+
+	public long[] getRLEMask() {
+		return this.rleEncoding;
+	}
+
+	public static RandomAccessibleInterval<UnsignedByteType> getMask(long width, long height, List<Mask> objects) {
+		return null;
+	}
+}