From 4fadcade939f7063114118286f2e6542cff1291a Mon Sep 17 00:00:00 2001
From: Frank <91616163+softhack007@users.noreply.github.com>
Date: Sun, 6 Oct 2024 19:59:59 +0200
Subject: [PATCH] fix for off-by-one error in Lissajous (float version)

---
 wled00/FX.cpp       | 2 +-
 wled00/FX_2Dfcn.cpp | 4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/wled00/FX.cpp b/wled00/FX.cpp
index 5b1f3515..a93c2843 100644
--- a/wled00/FX.cpp
+++ b/wled00/FX.cpp
@@ -5654,7 +5654,7 @@ uint16_t mode_2DLissajous(void) {            // By: Andrew Tuline
         unsigned palIndex = (256*ylocn) + phase/2 + (i* SEGMENT.speed)/64;
         //SEGMENT.setPixelColorXY(xlocn, ylocn, SEGMENT.color_from_palette(palIndex, false, PALETTE_SOLID_WRAP, 0)); // draw pixel with anti-aliasing - color follows rotation
         // WLEDMM wu_pixel is 50% faster, and still lokks better
-        SEGMENT.wu_pixel(uint32_t(xlocn * (cols <<8)), uint32_t(ylocn * (rows <<8)), 
+        SEGMENT.wu_pixel(uint32_t(xlocn * ((cols-1) <<8)), uint32_t(ylocn * ((rows-1) <<8)), 
                          CRGB(SEGMENT.color_from_palette(palIndex, false, PALETTE_SOLID_WRAP, 0)));
       }
   } else
diff --git a/wled00/FX_2Dfcn.cpp b/wled00/FX_2Dfcn.cpp
index 6ca95e13..34eefb58 100644
--- a/wled00/FX_2Dfcn.cpp
+++ b/wled00/FX_2Dfcn.cpp
@@ -466,8 +466,8 @@ void Segment::setPixelColorXY(float x, float y, uint32_t col, bool aa, bool fast
   }
 
 #else // replacement using wu_pixel
-  unsigned px = x * (virtualWidth() <<8);
-  unsigned py = y * (virtualHeight() <<8);
+  unsigned px = x * ((virtualWidth()-1) <<8);
+  unsigned py = y * ((virtualHeight()-1) <<8);
   wu_pixel(px, py, CRGB(col));
 #endif
 }