Fixed normal renormalization being triggered unnecesarily, reported at …

…#243
vpenades · Jul 25, 2024 · c10acd1 · c10acd1
1 parent e8d7d5a
commit c10acd1
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/src/SharpGLTF.Toolkit/Geometry/VertexTypes/VertexPreprocessorLambdas.cs b/src/SharpGLTF.Toolkit/Geometry/VertexTypes/VertexPreprocessorLambdas.cs
@@ -161,7 +161,7 @@ static class VertexPreprocessorLambdas
                 if (n == Vector3.Zero) return null;
 
                 var l = n.Length();
-                if (l < 0.99f || l > 0.01f) vertex.SetNormal(Vector3.Normalize(n));
+                if (Math.Abs(l-1) > 0.01f) vertex.SetNormal(Vector3.Normalize(n));
             }
 
             if (vertex.TryGetTangent(out Vector4 tw))
@@ -175,7 +175,7 @@ static class VertexPreprocessorLambdas
                 if (tw.W < 0) tw.W = -1;
 
                 var l = t.Length();
-                if (l < 0.99f || l > 0.01f) t = Vector3.Normalize(t);
+                if (Math.Abs(l - 1) > 0.01f) t = Vector3.Normalize(t);
 
                 vertex.SetTangent(new Vector4(t, tw.W));
             }