aDD PolygonSnapToLandBoundaryThroughAPI

Deltares · Jul 31, 2024 · 4eaeee1 · 4eaeee1
1 parent 9e46a9b
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Showing 4 changed files with 134 additions and 2 deletions.
diff --git a/src/MeshKernelNET/Api/IMeshKernelApi.cs b/src/MeshKernelNET/Api/IMeshKernelApi.cs
@@ -1622,8 +1622,26 @@ int PolygonEquidistantRefine(int meshKernelId, in DisposableGeometryList disposa
         /// <param name="secondIndex">The index of the second vertex</param>
         /// <param name="disposableGeometryListOut">The refined polygon</param>
         /// <returns>Error code</returns>
-        int PolygonLinearRefine(int meshKernelId, in DisposableGeometryList disposableGeometryListIn, int firstIndex,
-                          int secondIndex, ref DisposableGeometryList disposableGeometryListOut);
+        int PolygonLinearRefine(int meshKernelId, 
+                                in DisposableGeometryList disposableGeometryListIn, 
+                                int firstIndex,
+                                int secondIndex, 
+                                ref DisposableGeometryList disposableGeometryListOut);
+
+        /// <summary>
+        /// Snaps part of a polygon to a land boundary
+        /// </summary>
+        /// <param name="meshKernelId">Id of the mesh state</param
+        /// <param name="landboundaries">The land boundaries</param>
+        /// <param name="polygon">The input polygon</param>
+        /// <param name="firstIndex">The index of the first vertex</param>
+        /// <param name="secondIndex">The index of the second vertex</param>
+        /// <returns>Error code</returns>
+        int PolygonSnapToLandBoundary(int meshKernelId,
+                                      in DisposableGeometryList landboundaries,
+                                      ref DisposableGeometryList polygon,
+                                      int firstIndex,
+                                      int secondIndex);
 
         /// <summary>
         /// Redo editing action

diff --git a/src/MeshKernelNET/Api/MeshKernelApi.cs b/src/MeshKernelNET/Api/MeshKernelApi.cs
@@ -1507,6 +1507,17 @@ public int PolygonLinearRefine(int meshKernelId, in DisposableGeometryList dispo
             return MeshKernelDll.PolygonLinearRefine(meshKernelId, ref geometryListNativeIn, firstIndex, secondIndex, ref geometryListNativeOut);
         }
 
+        public int PolygonSnapToLandBoundary(int meshKernelId, 
+                                             in DisposableGeometryList landboundaries, 
+                                             ref DisposableGeometryList polygon,
+                                             int firstIndex,
+                                             int secondIndex)
+        {
+            GeometryListNative landboundariesNative = landboundaries.CreateNativeObject();
+            GeometryListNative polygonNative = polygon.CreateNativeObject(); // Create an instance for the out parameter
+            return MeshKernelDll.PolygonSnapToLandBoundary(meshKernelId, ref landboundariesNative, ref polygonNative, firstIndex, secondIndex);
+        }
+
         /// <inheritdoc/>
         public int RedoState(ref bool redone)
         {

diff --git a/src/MeshKernelNET/Native/MeshKernelDll.cs b/src/MeshKernelNET/Native/MeshKernelDll.cs
@@ -1870,6 +1870,22 @@ internal static extern int PolygonCountOffset([In] int meshKernelId,
         [DllImport(MeshKernelDllName, EntryPoint = "mkernel_polygon_linear_refine", CallingConvention = CallingConvention.Cdecl)]
         internal static extern int PolygonLinearRefine([In] int meshKernelId, [In] ref GeometryListNative geometryListIn, [In] int firstIndex, [In] int secondIndex, [In][Out] ref GeometryListNative geometryListOut);
 
+        /// <summary>
+        /// Snaps part of a polygon to a land boundary
+        /// </summary>
+        /// <param name="meshKernelId">Id of the mesh state</param
+        /// <param name="landboundaries">The land boundaries</param>
+        /// <param name="polygon">The input polygon</param>
+        /// <param name="firstIndex">The index of the first vertex</param>
+        /// <param name="secondIndex">The index of the second vertex</param>
+        /// <returns>Error code</returns>
+        [DllImport(MeshKernelDllName, EntryPoint = "mkernel_polygon_snap_to_landboundary", CallingConvention = CallingConvention.Cdecl)]
+        internal static extern int PolygonSnapToLandBoundary([In] int meshKernelId,
+                                                             [In] ref GeometryListNative landboundaries,
+                                                             [In][Out] ref GeometryListNative polygon,
+                                                             [In] int firstIndex,
+                                                             [In] int secondIndex);
+
         /// <summary>
         /// Redo editing action
         /// </summary>

diff --git a/test/MeshKernelNETTest/Api/MeshKernelTest.cs b/test/MeshKernelNETTest/Api/MeshKernelTest.cs
@@ -704,6 +704,93 @@ public void PolygonLinearRefineThroughAPI()
             }
         }
 
+        [Test]
+        public void PolygonSnapToLandBoundaryThroughAPI()
+        {
+            // Setup
+            using (var api = new MeshKernelApi())
+            using (DisposableMesh2D mesh = CreateMesh2D(11, 11, 100, 100))
+            using (var landboundaries = new DisposableGeometryList())
+            {
+                var id = 0;
+                var polygon = new DisposableGeometryList();
+                try
+                {
+                    id = api.AllocateState(0);
+
+                    double geometrySeparator = api.GetSeparator();
+                    landboundaries.GeometrySeparator = geometrySeparator;
+                    landboundaries.NumberOfCoordinates = 4;
+                    landboundaries.XCoordinates = new[] { 139.251465, 527.753906, 580.254211, 194.001801 };
+                    landboundaries.YCoordinates = new[] { 497.630615, 499.880676, 265.878296, 212.627762 };
+                    landboundaries.NumberOfCoordinates = landboundaries.XCoordinates.Length;
+
+                    polygon.XCoordinates = new[] { 170.001648, 263.002228, 344.002747,
+                        458.753448, 515.753845, 524.753906,
+                        510.503754, 557.754089, 545.004028,
+                        446.003387, 340.252716, 242.752106,
+                        170.001648 };
+                    polygon.YCoordinates = new[] { 472.880371, 472.880371, 475.130432,
+                        482.630493, 487.130554, 434.630005,
+                        367.129333, 297.378601, 270.378357,
+                        259.128235, 244.128067, 226.877884,
+                        472.880371 };
+                    polygon.NumberOfCoordinates = polygon.XCoordinates.Length;
+
+
+                    var firstIndex = 0;
+                    var secondIndex = 2;
+                    int numberOfPolygonVertices = -1;
+                    var result = api.PolygonSnapToLandBoundary(id,
+                                                               landboundaries,
+                                                               ref polygon,
+                                                               firstIndex,
+                                                               secondIndex);
+                    Assert.That(result, Is.EqualTo(0));
+
+
+                    const double tolerance = 1.0e-3;
+                    var expectedXCoordinates = new[] { 169.85727722422831,
+                        262.854737816309,
+                        343.86557098779792,
+                        458.753448,
+                        515.753845,
+                        524.753906,
+                        510.503754,
+                        557.754089,
+                        545.004028,
+                        446.003387,
+                        340.252716,
+                        242.752106,
+                        170.001648 };
+
+                    var expectedYCoordinates = new[]
+                    {   497.80787243056284,
+                        498.34647897995455,
+                        498.81566346133775,
+                        482.630493,
+                        487.130554,
+                        434.630005,
+                        367.129333,
+                        297.378601,
+                        270.378357,
+                        259.128235,
+                        244.128067,
+                        226.877884,
+                        472.880371};
+
+                    Assert.That(polygon.XCoordinates, Is.EqualTo(expectedXCoordinates).Within(tolerance));
+                    Assert.That(polygon.YCoordinates, Is.EqualTo(expectedYCoordinates).Within(tolerance));
+
+                }
+                finally
+                {
+                    api.DeallocateState(id);
+                    polygon.Dispose();
+                }
+            }
+        }
+
         [Test]
         public void Mesh2dRefineBasedOnSamplesThroughAPI()
         {