diff --git a/Triangle.NET/Triangle/Geometry/Point.cs b/Triangle.NET/Triangle/Geometry/Point.cs
index 3fa644d..3c1fb95 100644
--- a/Triangle.NET/Triangle/Geometry/Point.cs
+++ b/Triangle.NET/Triangle/Geometry/Point.cs
@@ -7,10 +7,16 @@
 namespace TriangleNet.Geometry
 {
     using System;
+    using System.Diagnostics;
 
     /// <summary>
     /// Represents a 2D point.
     /// </summary>
+#if USE_Z
+    [DebuggerDisplay("ID {ID} [{X}, {Y}, {Z}]")]
+#else
+    [DebuggerDisplay("ID {ID} [{X}, {Y}]")]
+#endif
     public class Point : IComparable<Point>, IEquatable<Point>
     {
         internal int id;
@@ -170,10 +176,5 @@ namespace TriangleNet.Geometry
 
             return hash;
         }
-
-        public override string ToString()
-        {
-            return String.Format("[{0},{1}]", x, y);
-        }
     }
 }
diff --git a/Triangle.NET/Triangle/Meshing/ConstraintMesher.cs b/Triangle.NET/Triangle/Meshing/ConstraintMesher.cs
index 69ccada..ee42aaf 100644
--- a/Triangle.NET/Triangle/Meshing/ConstraintMesher.cs
+++ b/Triangle.NET/Triangle/Meshing/ConstraintMesher.cs
@@ -719,6 +719,9 @@ namespace TriangleNet.Meshing
                 newvertex.attributes[i] = torg.attributes[i] + split * (tdest.attributes[i] - torg.attributes[i]);
             }
 #endif
+#if USE_Z
+            newvertex.z = torg.z + split * (tdest.z - torg.z);
+#endif
 
             mesh.vertices.Add(newvertex.hash, newvertex);
 
diff --git a/Triangle.NET/Triangle/Meshing/QualityMesher.cs b/Triangle.NET/Triangle/Meshing/QualityMesher.cs
index 1976e9d..edeef48 100644
--- a/Triangle.NET/Triangle/Meshing/QualityMesher.cs
+++ b/Triangle.NET/Triangle/Meshing/QualityMesher.cs
@@ -624,6 +624,9 @@ namespace TriangleNet.Meshing
                         newvertex.attributes[i] = eorg.attributes[i]
                             + split * (edest.attributes[i] - eorg.attributes[i]);
                     }
+#endif
+#if USE_Z
+                    newvertex.z = eorg.z + split * (edest.z - eorg.z);
 #endif
                     if (!Behavior.NoExact)
                     {
@@ -790,6 +793,9 @@ namespace TriangleNet.Meshing
                         {
                             Interpolation.InterpolateAttributes(newvertex, newvertex.tri.tri, mesh.nextras);
                         }
+#endif
+#if USE_Z
+                        Interpolation.InterpolateZ(newvertex, newvertex.tri.tri);
 #endif
                         mesh.vertices.Add(newvertex.hash, newvertex);