diff --git a/src/DotRecast.Detour.TileCache/TileCache.cs b/src/DotRecast.Detour.TileCache/TileCache.cs
index d917aa6..c462369 100644
--- a/src/DotRecast.Detour.TileCache/TileCache.cs
+++ b/src/DotRecast.Detour.TileCache/TileCache.cs
@@ -371,13 +371,13 @@ namespace DotRecast.Detour.TileCache
         }
 
         // Aabb obstacle
-        public long addBoxObstacle(float[] bmin, float[] bmax)
+        public long addBoxObstacle(Vector3f bmin, Vector3f bmax)
         {
             TileCacheObstacle ob = allocObstacle();
             ob.type = TileCacheObstacle.TileCacheObstacleType.BOX;
 
-            vCopy(ref ob.bmin, bmin);
-            vCopy(ref ob.bmax, bmax);
+            ob.bmin = bmin;
+            ob.bmax = bmax;
 
             return addObstacleRequest(ob).refs;
         }
diff --git a/src/DotRecast.Recast/RecastFilledVolumeRasterization.cs b/src/DotRecast.Recast/RecastFilledVolumeRasterization.cs
index e893eef..e2812e2 100644
--- a/src/DotRecast.Recast/RecastFilledVolumeRasterization.cs
+++ b/src/DotRecast.Recast/RecastFilledVolumeRasterization.cs
@@ -684,7 +684,7 @@ namespace DotRecast.Recast
                 }
 
                 // rectangle vertex
-                float[] point = new float[] { 0, rectangle[1], 0 };
+                var point = Vector3f.Of(0, rectangle[1], 0);
                 for (int i = 0; i < 4; i++)
                 {
                     point[0] = ((i & 1) == 0) ? rectangle[0] : rectangle[2];
@@ -740,7 +740,7 @@ namespace DotRecast.Recast
             return null;
         }
 
-        private static float? rayTriangleIntersection(float[] point, int plane, float[][] planes)
+        private static float? rayTriangleIntersection(Vector3f point, int plane, float[][] planes)
         {
             float t = (planes[plane][3] - dot(planes[plane], point)) / planes[plane][1];
             float[] s = { point[0], point[1] + t, point[2] };
diff --git a/src/DotRecast.Recast/RecastVectors.cs b/src/DotRecast.Recast/RecastVectors.cs
index a6fd393..382e720 100644
--- a/src/DotRecast.Recast/RecastVectors.cs
+++ b/src/DotRecast.Recast/RecastVectors.cs
@@ -168,6 +168,11 @@ namespace DotRecast.Recast
             return v1[0] * v2[0] + v1[1] * v2[1] + v1[2] * v2[2];
         }
         
+        public static float dot(float[] v1, Vector3f v2)
+        {
+            return v1[0] * v2[0] + v1[1] * v2[1] + v1[2] * v2[2];
+        }
+        
         public static float dot(Vector3f v1, Vector3f v2)
         {
             return v1[0] * v2[0] + v1[1] * v2[1] + v1[2] * v2[2];
diff --git a/test/DotRecast.Detour.TileCache.Test/TempObstaclesTest.cs b/test/DotRecast.Detour.TileCache.Test/TempObstaclesTest.cs
index 29fda75..1421c19 100644
--- a/test/DotRecast.Detour.TileCache.Test/TempObstaclesTest.cs
+++ b/test/DotRecast.Detour.TileCache.Test/TempObstaclesTest.cs
@@ -80,8 +80,10 @@ public class TempObstaclesTest : AbstractTileCacheTest
         MeshTile tile = tiles[0];
         Assert.That(tile.data.header.vertCount, Is.EqualTo(16));
         Assert.That(tile.data.header.polyCount, Is.EqualTo(6));
-        long o = tc.addBoxObstacle(new float[] { -2.315208f, 9.998184f, -20.807983f },
-            new float[] { -1.315208f, 11.998184f, -19.807983f });
+        long o = tc.addBoxObstacle(
+            Vector3f.Of(-2.315208f, 9.998184f, -20.807983f),
+            Vector3f.Of(-1.315208f, 11.998184f, -19.807983f)
+        );
         bool upToDate = tc.update();
         Assert.That(upToDate, Is.True);
         tiles = tc.getNavMesh().getTilesAt(1, 4);