Update 1.4

stegsolve/StereoTransform.java

@@ -0,0 +1,92 @@
+/*
+ * StereoTransform.java
+ */
+
+package stegsolve;
+
+import java.awt.image.*;
+
+/**
+ * Represents solving a stereogram
+ * @author Caesum
+ */
+public class StereoTransform {
+
+    /**
+     * Original image
+     */
+    private BufferedImage originalImage;
+    /**
+     * Transformed image
+     */
+    private BufferedImage transform;
+    /**
+     * Offset of transformation
+     */
+    private int transNum;
+
+    /**
+     * Create a new transformation
+     * @param bi Image
+     */
+    StereoTransform(BufferedImage bi)
+    {
+        originalImage = bi;
+        transNum=0;
+        calcTrans();
+    }
+
+    /**
+     * Solve the stereogram given the offset
+     */
+    private void calcTrans()
+    {
+        transform = new BufferedImage(originalImage.getWidth(), originalImage.getHeight(), BufferedImage.TYPE_INT_RGB);
+        for(int i=0;i<originalImage.getWidth();i++)
+            for(int j=0;j<originalImage.getHeight();j++)
+            {
+                int col=0;
+                int fcol = originalImage.getRGB(i,j);
+                col=fcol^(originalImage.getRGB((i+transNum)%originalImage.getWidth(), j)&0x00ffffff);
+                transform.setRGB(i, j, col);
+             }
+    }
+
+    /**
+     * Reduce the offset and try to solve
+     */
+    public void back()
+    {
+        transNum--;
+        if(transNum<0) transNum=originalImage.getWidth()-1;
+        calcTrans();
+    }
+
+    /**
+     * Increase the offset and try to solve
+     */
+    public void forward()
+    {
+        transNum++;
+        if(transNum>=originalImage.getWidth()) transNum=0;
+        calcTrans();
+    }
+
+    /**
+     * Text description  for offset
+     * @return string text description of offset
+     */
+    public String getText()
+    {
+        return "Offset: "+transNum;
+    }
+
+    /**
+     * The transformed image
+     * @return buffered image of the stereogram with transformation
+     */
+    public BufferedImage getImage()
+    {
+         return transform;
+    }
+}