From c2433d258276013b1df9e52df95a05520717bf70 Mon Sep 17 00:00:00 2001
From: pmneo <pmneo@users.noreply.github.com>
Date: Thu, 13 Apr 2023 12:58:38 +0200
Subject: [PATCH] tryHarder for the WhiteRectangeDetector

Proposal for a try harder variant of the WhiteRectableDetector to find a not centered Aztec and Data Matrix Code in a page
---
 .../detector/WhiteRectangleDetector.java      | 26 ++++++++++++++++++-
 1 file changed, 25 insertions(+), 1 deletion(-)

diff --git a/core/src/main/java/com/google/zxing/common/detector/WhiteRectangleDetector.java b/core/src/main/java/com/google/zxing/common/detector/WhiteRectangleDetector.java
index 8d77b0de5..693119463 100644
--- a/core/src/main/java/com/google/zxing/common/detector/WhiteRectangleDetector.java
+++ b/core/src/main/java/com/google/zxing/common/detector/WhiteRectangleDetector.java
@@ -83,7 +83,31 @@ public final class WhiteRectangleDetector {
    * @throws NotFoundException if no Data Matrix Code can be found
    */
   public ResultPoint[] detect() throws NotFoundException {
-
+    if( this.tryHarder ) {
+      try {
+        return this.internalDetect();
+      }
+      catch( NotFoundException e ) {
+        for( int x=0; x < image.getWidth(); x += 50 ) {
+          for( int y=0; y < image.getHeight(); y += 50 ) {  
+            try {
+              return new WhiteRectangleDetector( image, INIT_SIZE, x, y ).internalDetect();
+            }
+            catch( NotFoundException nfe ) {
+              //Ignore
+            }
+          }
+        }
+        //also try harder did not found anything
+        throw e;
+      }
+    }
+    else {
+      return this.internalDetect();
+    }
+  }
+  
+  protected ResultPoint[] internalDetect() throws NotFoundException {
     int left = leftInit;
     int right = rightInit;
     int up = upInit;