Добавил вторую главу занимательного программирования

Занимательное программирование/2/6_pixel/core/build.gradle

@@ -0,0 +1,5 @@
+[compileJava, compileTestJava]*.options*.encoding = 'UTF-8'
+
+sourceSets.main.java.srcDirs = [ "src/" ]
+
+eclipse.project.name = appName + "-core"

Занимательное программирование/2/6_pixel/core/src/net/caraus/pixelimage/PixelImage.java

@@ -0,0 +1,90 @@
+package net.caraus.pixelimage;
+
+import java.util.random.RandomGenerator;
+
+import com.badlogic.gdx.ApplicationAdapter;
+import com.badlogic.gdx.Gdx;
+import com.badlogic.gdx.files.FileHandle;
+import com.badlogic.gdx.graphics.Pixmap;
+import com.badlogic.gdx.graphics.Texture;
+import com.badlogic.gdx.graphics.Pixmap.Format;
+import com.badlogic.gdx.graphics.g2d.SpriteBatch;
+import com.badlogic.gdx.math.RandomXS128;
+import com.badlogic.gdx.utils.ScreenUtils;
+
+public class PixelImage extends ApplicationAdapter {
+	private SpriteBatch batch;
+	private Texture img;
+    private Pixmap canvas;
+    private Pixmap etalon;
+    private int[][][] buffer;
+    private static final int X_OFFSET = 200;
+    private static final int Y_OFFSET = 100;
+    private int iterations = 0;
+	
+	@Override
+	public void create () {
+		batch = new SpriteBatch();
+
+        FileHandle fileHandle = Gdx.files.internal("badlogic.jpg");
+        etalon = new Pixmap(fileHandle);
+
+        canvas = new Pixmap(etalon.getWidth() + X_OFFSET * 2, etalon.getHeight() + Y_OFFSET * 2, Format.RGB888);
+        buffer = new int[etalon.getWidth()][etalon.getHeight()][2];
+
+        for (int i = 0; i < buffer.length; ++i) {
+            for (int j = 0; j < buffer[i].length; ++j) {
+                buffer[i][j][0] = X_OFFSET + i;
+                buffer[i][j][1] = Y_OFFSET + j;
+            }
+        }
+        img = new Texture(canvas);
+	}
+
+	@Override
+	public void render () {
+		ScreenUtils.clear(1, 1, 1, 1);
+
+        canvas.setColor(1, 1, 1, 1);
+        canvas.fill();
+
+        // Draw the buffer.
+        for (int i = 0; i < buffer.length; ++i) {
+            for (int j = 0; j < buffer[i].length; ++j) {
+                int pixelColor = etalon.getPixel(i, j);
+
+                canvas.setColor(pixelColor);
+                canvas.drawPixel(buffer[i][j][0], buffer[i][j][1]);
+            }
+        }
+
+        if (iterations < 20) {
+            RandomGenerator randomGenerator = new RandomXS128();
+            // Change the pixel position.
+            for (int i = 0; i < buffer.length; ++i) {
+                for (int j = 0; j < buffer[i].length; ++j) {
+                    int step = 5 * iterations + 1;
+                    int moveX = randomGenerator.nextInt(step) - step / 2;
+                    int moveY = randomGenerator.nextInt(step) - step / 2;
+
+                    buffer[i][j][0] += moveX;
+                    buffer[i][j][1] += moveY;
+                }
+            }
+            ++iterations;
+        }
+		img.draw(canvas, 0, 0);
+
+		batch.begin();
+        batch.draw(img, 0, 0);
+		batch.end();
+	}
+	
+	@Override
+	public void dispose () {
+		batch.dispose();
+		img.dispose();
+        canvas.dispose();
+        etalon.dispose();
+	}
+}