From 601499b69b800e11511fa41afdbe5aea1560c2f4 Mon Sep 17 00:00:00 2001
From: Frank <91616163+softhack007@users.noreply.github.com>
Date: Thu, 6 Jul 2023 10:02:01 +0200
Subject: [PATCH] XY: minor bugfix

properly handle width=0 OR height=0
---
 wled00/FX.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/wled00/FX.h b/wled00/FX.h
index 3d285296..9fcf3bc1 100644
--- a/wled00/FX.h
+++ b/wled00/FX.h
@@ -628,7 +628,8 @@ typedef struct Segment {
     inline uint16_t XY(uint_fast16_t x, uint_fast16_t y) { // support function to get relative index within segment (for leds[]) // WLEDMM inline for speed
       uint_fast16_t width  = virtualWidth();   // segment width in logical pixels
       uint_fast16_t height = virtualHeight();  // segment height in logical pixels
-      if ((width == 0) || (height == 0)) return 0; // softhack007 avoid div/0
+      if (width == 0) return 0;           // softhack007 avoid div/0
+      if (height == 0) return (x%width);  // softhack007 avoid div/0
       return (x%width) + (y%height) * width;
     }
     void setPixelColorXY(int x, int y, uint32_t c); // set relative pixel within segment with color