From ea2881a58d5521c809ec2e05e408195aa6f3d3e1 Mon Sep 17 00:00:00 2001
From: T1ti <40864460+T1ti@users.noreply.github.com>
Date: Tue, 7 May 2024 05:08:35 +0200
Subject: [PATCH] recalculate normals when importing heightmaps

---
 src/noggit/MapTile.cpp | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/src/noggit/MapTile.cpp b/src/noggit/MapTile.cpp
index 00237b80..7b74a5cd 100755
--- a/src/noggit/MapTile.cpp
+++ b/src/noggit/MapTile.cpp
@@ -1334,6 +1334,10 @@ void MapTile::setHeightmapImage(QImage const& baseimage, float min_height, float
         }
 
       registerChunkUpdate(ChunkUpdateFlags::VERTEX);
+
+      // else we recalculate after tiled edges updates
+      if (!tiledEdges)
+        chunk->recalcNorms();
     }
   }
 
@@ -1355,6 +1359,7 @@ void MapTile::setHeightmapImage(QImage const& baseimage, float min_height, float
                 int source_vert = vert_x;
                 targetChunk->getHeightmap()[target_vert].y = sourceChunk->getHeightmap()[source_vert].y;
             }
+            targetChunk->recalcNorms();
           }
           tile->registerChunkUpdate(ChunkUpdateFlags::VERTEX);
         }
@@ -1377,6 +1382,7 @@ void MapTile::setHeightmapImage(QImage const& baseimage, float min_height, float
                 int source_vert = vert_y * 17;
                 targetChunk->getHeightmap()[target_vert].y = sourceChunk->getHeightmap()[source_vert].y;
             }
+            targetChunk->recalcNorms();
           }
           tile->registerChunkUpdate(ChunkUpdateFlags::VERTEX);
         }
@@ -1391,10 +1397,20 @@ void MapTile::setHeightmapImage(QImage const& baseimage, float min_height, float
           MapChunk* targetChunk = tile->getChunk(15, 15);
           targetChunk->registerChunkUpdate(ChunkUpdateFlags::VERTEX);
           tile->getChunk(15,15)->getHeightmap()[144].y = this->getChunk(0,0)->getHeightmap()[0].y;
+          targetChunk->recalcNorms();
           tile->registerChunkUpdate(ChunkUpdateFlags::VERTEX);
         }
       );
     }
+  
+    for (int k = 0; k < 16; ++k)
+    {
+        for (int l = 0; l < 16; ++l)
+        {
+            MapChunk* chunk = getChunk(k, l);
+            chunk->recalcNorms();
+        }
+    }
   }
 }