Make one side of the box sharp

QTProject/mesh.cpp

@@ -106,9 +106,21 @@ void Mesh::MeshEntry::init(QOpenGLFunctions_4_3_Core *f,QVector<Vertex>& Vertice
     QMap<Edge,unsigned int> sharpEdges;
     if (fakeSharpness){
         for (int i = 0; i < Indices.size(); i+= 3){
-            sharpEdges.insert(Edge(Indices[i],Indices[i+1]),3);
-            sharpEdges.insert(Edge(Indices[i+1],Indices[i+2]),3);
-            sharpEdges.insert(Edge(Indices[i+2],Indices[i]),3);
+            Vertex a = Vertices[Indices[i+0]];
+            Vertex b = Vertices[Indices[i+1]];
+            Vertex c = Vertices[Indices[i+2]];
+            if (a.pos.z() > 0.9 && b.pos.z() > 0.9) {
+                if (a.pos.x() == b.pos.x() || a.pos.y() == b.pos.y())
+                sharpEdges.insert(Edge(Indices[i],Indices[i+1]),3);
+            }
+            if (b.pos.z() > 0.9 && c.pos.z() > 0.9) {
+                if (b.pos.x() == c.pos.x() || b.pos.y() == c.pos.y())
+                sharpEdges.insert(Edge(Indices[i+1],Indices[i+2]),3);
+            }
+            if (c.pos.z() > 0.9 && a.pos.z() > 0.9) {
+                if (c.pos.x() == a.pos.x() || c.pos.y() == a.pos.y())
+                sharpEdges.insert(Edge(Indices[i+2],Indices[i]),3);
+            }
         }
     }
     buffers[0].reset(new SubdivEntry);