miniproject1/test.java at main · tsogtb/miniproject1 · GitHub

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/*
 * Author:   Tsogt Baigalmaa
 * Date:     Oct 27, 2021
 */

package fingerprintDraft;

public class Neighbors {
	public static void main(String[] args) {
		boolean[][] testimage1 = { {true, false, true, false, true},
								  {false, true, false, true, false},
								  {true, false, true, false, true},
								  {false, true, false, true, false},
								  {true, true, true, false, true} };

		boolean[][] testimage2 = {{true},{true},{false}};

		boolean[] test = getNeighbors(testimage2, 1, 0);
		for (boolean b : test) {
			System.out.print(b + " ");
		}
	}
	public static boolean[] getNeighbors(boolean[][] image, int row, int col) {
		if (row < 0 || col < 0 || row > image.length - 1 || col > image[0].length - 1) {
			return null;
		}
		image = addFrame(image);
		boolean[] voisins = new boolean[8];
		int[][] clockwise = {{-1, 0},{-1, 1},{0, 1},{1, 1},{1, 0},{1, -1},{0, -1},{-1, -1}};
		for (int i = 0; i < 8; ++i) {
				voisins[i] = image[row + 1 + clockwise[i][0]][col + 1 + clockwise[i][1]];
		}
		return voisins;
	}
	public static boolean[][] addFrame(boolean[][] image) {
		boolean[][] frame = new boolean[image.length + 2][image[0].length + 2];
		for (boolean entry : frame[0])
			entry = false;
		for (boolean entry : frame[frame.length - 1])
			entry = false;
		for (int i = 1; i < frame.length - 1; ++i) {
			frame[i][0] = false;
			frame[i][frame[0].length - 1] = false;
		}

		for (int i = 1; i < frame.length - 1; ++i) {
			for (int j = 1; j < frame[0].length - 1; ++j) {
				frame[i][j] = image[i - 1][j - 1];
			}
		}
		return frame;
//	}
////	public static int blackNeighbors(boolean [] neighbors) {
//
	}
}