From 45d253130d126b5d96756b7252e5702f314e0da9 Mon Sep 17 00:00:00 2001
From: Daniel Gredler <daniel.gredler@gmail.com>
Date: Tue, 30 Jul 2024 17:21:03 +0200
Subject: [PATCH] Reduce memory garbage created while drawing MaxiCode symbols

---
 .../uk/org/okapibarcode/output/Java2DRenderer.java  | 13 ++++++++-----
 1 file changed, 8 insertions(+), 5 deletions(-)

diff --git a/src/main/java/uk/org/okapibarcode/output/Java2DRenderer.java b/src/main/java/uk/org/okapibarcode/output/Java2DRenderer.java
index bdea4209..9af3ee9f 100644
--- a/src/main/java/uk/org/okapibarcode/output/Java2DRenderer.java
+++ b/src/main/java/uk/org/okapibarcode/output/Java2DRenderer.java
@@ -131,13 +131,16 @@ public void render(Symbol symbol) {
             g2d.drawString(text.text, x, y);
         }
 
-        for (Hexagon hexagon : symbol.getHexagons()) {
+        if (!symbol.getHexagons().isEmpty()) {
             Polygon polygon = new Polygon();
-            for (int j = 0; j < 6; j++) {
-                polygon.addPoint((int) ((hexagon.pointX[j] * magnification) + marginX),
-                                 (int) ((hexagon.pointY[j] * magnification) + marginY));
+            for (Hexagon hexagon : symbol.getHexagons()) {
+                for (int j = 0; j < 6; j++) {
+                    polygon.addPoint((int) ((hexagon.pointX[j] * magnification) + marginX),
+                                     (int) ((hexagon.pointY[j] * magnification) + marginY));
+                }
+                g2d.fill(polygon);
+                polygon.reset();
             }
-            g2d.fill(polygon);
         }
 
         List< Circle > target = symbol.getTarget();