From 790cf44f8bcc50bfac7a593f31e335a5960c6da2 Mon Sep 17 00:00:00 2001
From: Trygve <trygve@posteo.net>
Date: Tue, 7 May 2024 10:35:31 +0200
Subject: [PATCH] bugfix

---
 src/main.cpp | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/src/main.cpp b/src/main.cpp
index 408592f..ee25b53 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -21,10 +21,10 @@ std::vector<Point> produce_cellmap(HeightMap* heightmap, float z)
     for (int i = 0; i<length; i++) {
         int y = i/(heightmap->width-1);
         int x = i%(heightmap->width-1);
-        uint8_t result = (heightmap->get_pixel(x,y)>z) + 
-        (heightmap->get_pixel(x+1,y)>z)*2 +
-        (heightmap->get_pixel(x+1,y+1)>z)*4 +
-        (heightmap->get_pixel(x,y+1)>z)*8;
+        uint8_t result = (heightmap->get_pixel(x,y)>z)*8 + 
+        (heightmap->get_pixel(x+1,y)>z)*4 +
+        (heightmap->get_pixel(x+1,y+1)>z)*2 +
+        (heightmap->get_pixel(x,y+1)>z);
         if (result != 0 and result != 15 ) {
             points.push_back(Point(x, y, result));
         };
@@ -132,7 +132,7 @@ constexpr std::tuple<double, double, double, double> marching_squares_lookup(int
     switch (mcase) {
         case 1: return {0, 0.5, 0.5, 0};
         case 2: return {1, 0.5, 0.5, 0};
-        case 3: return {0, 0.5, 1, 0};
+        case 3: return {0, 0.5, 1, 0.5};
         case 4: return {0.5, 1, 1, 0.5};
         case 5: return {0, 0, 0, 0}; //FIXME
         case 6: return {0.5, 1, 0.5, 0};