2 * Copyright (c) 2018-2019. Developed by Hedgecode.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
17 package org.hedgecode.chess.img.board;
19 import java.awt.image.BufferedImage;
20 import java.util.Objects;
23 * Storage class for set of images of chess board squares.
25 * @author Dmitry Samoshin aka gotty
27 public class SquarePair<T> {
30 private final T light;
32 private SquarePair(T dark, T light) {
45 public boolean isFilled() {
46 if (this.dark == null || this.light == null) {
53 public boolean equals(Object o) {
54 if (!(o instanceof SquarePair)) {
57 SquarePair<?> that = (SquarePair<?>) o;
59 return Objects.equals(this.dark, that.dark)
60 && Objects.equals(this.light, that.light);
64 public int hashCode() {
65 return (dark == null ? 0 : dark.hashCode())
66 ^ (light == null ? 0 : light.hashCode());
69 public static SquarePair<BufferedImage> create(BufferedImage dark, BufferedImage light) {
70 return new SquarePair<>(dark, light);