import java.util.Arrays;

public class Main {

    public static void main(String[] args) {
//        int[][][] image = MyImageIO.readImageFromFile("C:\\Users\\Timor\\IdeaProjects\\DorEx\\cat.jpg");
//        int[][] theNewImage = rgb2gray(image);
//        int[][][] theNewImage2 = rotate90(image);
//        MyImageIO.writeImageToFile("C:\\Users\\Timor\\IdeaProjects\\DorEx\\catCopyRotate",theNewImage2);
    }


    public static int[][] rgb2gray(int[][][] im) {
        int rows = im[0].length;
        int coloums = im[0][0].length;
        int[][] outImg = new int[rows][coloums];
        for (int i = 0; i < rows; ++i) {
            for (int j = 0; j < coloums; ++j) {
                outImg[i][j] = ((int) (0.3 * im[0][i][j] + 0.59 * im[1][i][j] + 0.11 * im[2][i][j])) * 255;
            }
        }
        return outImg;
    }

    public static int[][][] rotate90(int[][][] im) {
        int rows = im[0].length;
        int coloums = im[0][0].length;

        int[][][] outImg = new int[3][coloums][rows]; // 2,0 -> 0,0      1,0 -> 0,1      0,0 -> 0,2
        for (int i = 0; i< rows; ++i) {
            for (int j = 0 ;j<coloums;++j) {
                outImg[0][j][rows-1-i] = im[0][i][j];
                outImg[1][j][rows-1-i] = im[1][i][j];
                outImg[2][j][rows-1-i] = im[2][i][j];
            }
        }
        return outImg;
    }

}