Added support for TIN geometry type

README.md

@@ -22,7 +22,7 @@ Features:
 
 - Cesium: LOD support and Outlines support (using CESIUM_primitive_outline);
 
-- Triangulation of input geometries LineStrings/Polygon/MultiPolygon/PolyhedralSurface with Z values;
+- Triangulation of input geometries LineStrings/Polygon/MultiPolygon/PolyhedralSurface/TIN with Z values;
 
 - Docker support.
 

src/b3dm.tileset/GeometricErrorCalculator.cs

@@ -23,6 +23,6 @@ public static double[] GetGeometricErrors(double maxGeometricError, List<int> lo
             res.Add(0);
         }
 
-        return res.ToArray(); ;
+        return res.ToArray();
     } 
 }

src/pg2b3dm.database.tests/UnitTest1.cs

@@ -24,6 +24,8 @@ public async Task Setup()
         await _containerPostgres.ExecScriptAsync(initScript1);
         var initScript2 = File.ReadAllText("./postgres-db/2_create_delaware_table.sql");
         await _containerPostgres.ExecScriptAsync(initScript2);
+        var initScript3 = File.ReadAllText("./postgres-db/3_create_geom_table.sql");
+        await _containerPostgres.ExecScriptAsync(initScript3);
     }
 
     [TearDown]
@@ -105,4 +107,34 @@ public void LodTest()
         new List<Tile>());
         Assert.That(tiles.Count, Is.EqualTo(145));
     }
+
+
+    [Test]
+    public void GeometryTest()
+    {
+        var connectionString = _containerPostgres.GetConnectionString();
+        var conn = new NpgsqlConnection(connectionString);
+        var bbox_wgs84 = BoundingBoxRepository.GetBoundingBoxForTable(conn, "geom_test", "geom3d");
+        Directory.CreateDirectory("output/content");
+        var center_wgs84 = bbox_wgs84.bbox.GetCenter();
+        var translation = SpatialConverter.GeodeticToEcef((double)center_wgs84.X!, (double)center_wgs84.Y!, 0);
+        var trans = new double[] { translation.X, translation.Y, translation.Z };
+        var implicitTiler = new QuadtreeTiler(conn, "geom_test", 4326, "geom3d", 50, string.Empty,
+            trans,
+            string.Empty,
+            string.Empty,
+            string.Empty,
+            "output/content",
+            new List<int>() { 0 },
+            skipCreateTiles: false);
+        var tile = new Tile(0, 0, 0) {
+            BoundingBox = bbox_wgs84.bbox.ToArray()
+        };
+        var tiles = implicitTiler.GenerateTiles(
+            bbox_wgs84.bbox,
+            tile,
+            new List<Tile>(), createGltf:true);
+        Assert.That(tiles.Count, Is.EqualTo(1));
+    }
+
 }

src/pg2b3dm.database.tests/pg2b3dm.database.tests.csproj

@@ -41,6 +41,9 @@
     <None Update="postgres-db\2_create_delaware_table.sql">
       <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
     </None>
+    <None Update="postgres-db\3_create_geom_table.sql">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </None>
     <None Update="testfixtures\delaware.sqlite">
       <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
     </None>

src/pg2b3dm.database.tests/postgres-db/3_create_geom_table.sql

@@ -0,0 +1,10 @@
+CREATE TABLE IF NOT EXISTS geom_test
+(
+    ID SERIAL PRIMARY KEY,
+    geom3d geometry(GeometryZ,4326)
+);
+
+CREATE INDEX ON geom_test USING gist(st_centroid(st_envelope(geom3d)));
+
+INSERT INTO geom_test(geom3d) VALUES('SRID=4326;TIN Z (((-46.15991163092363 25.647893009411945 0,-41.68044158790308 36.46229033951616 0,-43.38761402466139 30.834497029047316 0,-46.15991163092363 25.647893009411945 0)),((-49.89079656440356 21.10179656440359 0,-41.104 42.315 0,-41.68044158790308 36.46229033951616 0,-49.89079656440356 21.10179656440359 0)),((-46.15991163092363 25.647893009411945 0,-49.89079656440356 21.10179656440359 0,-41.68044158790308 36.46229033951616 0,-46.15991163092363 25.647893009411945 0)),((-54.436893009411904 17.370911630923658 0,-59.62349702904727 14.598614024661408 0,-49.89079656440356 21.10179656440359 0,-54.436893009411904 17.370911630923658 0)),((-59.62349702904727 14.598614024661408 0,-65.25129033951612 12.891441587903092 0,-49.89079656440356 21.10179656440359 0,-59.62349702904727 14.598614024661408 0)),((-65.25129033951612 12.891441587903092 0,-71.10399999999996 12.314999999999998 0,-82.58450297095263 14.598614024661373 0,-65.25129033951612 12.891441587903092 0)),((-71.10399999999996 12.314999999999998 0,-76.9567096604838 12.891441587903074 0,-82.58450297095263 14.598614024661373 0,-71.10399999999996 12.314999999999998 0)),((-65.25129033951612 12.891441587903092 0,-82.58450297095263 14.598614024661373 0,-49.89079656440356 21.10179656440359 0,-65.25129033951612 12.891441587903092 0)),((-59.62349702904745 70.03138597533865 0,-98.82038597533864 53.79550297095259 0,-65.2512903395163 71.73855841209694 0,-59.62349702904745 70.03138597533865 0)),((-87.77110699058801 17.370911630923608 0,-96.04808836907631 25.64789300941187 0,-82.58450297095263 14.598614024661373 0,-87.77110699058801 17.370911630923608 0)),((-92.31720343559638 21.101796564403525 0,-96.04808836907631 25.64789300941187 0,-87.77110699058801 17.370911630923608 0,-92.31720343559638 21.101796564403525 0)),((-96.04808836907631 25.64789300941187 0,-98.82038597533864 53.79550297095259 0,-59.62349702904745 70.03138597533865 0,-96.04808836907631 25.64789300941187 0)),((-98.82038597533857 30.834497029047228 0,-101.104 42.3149999999999 0,-98.82038597533864 53.79550297095259 0,-98.82038597533857 30.834497029047228 0)),((-100.5275584120969 36.46229033951606 0,-101.104 42.3149999999999 0,-98.82038597533857 30.834497029047228 0,-100.5275584120969 36.46229033951606 0)),((-98.82038597533857 30.834497029047228 0,-98.82038597533864 53.79550297095259 0,-96.04808836907631 25.64789300941187 0,-98.82038597533857 30.834497029047228 0)),((-100.52755841209694 48.167709660483744 0,-98.82038597533864 53.79550297095259 0,-101.104 42.3149999999999 0,-100.52755841209694 48.167709660483744 0)),((-82.58450297095263 14.598614024661373 0,-96.04808836907631 25.64789300941187 0,-59.62349702904745 70.03138597533865 0,-82.58450297095263 14.598614024661373 0)),((-96.04808836907642 58.982106990587965 0,-92.31720343559651 63.52820343559634 0,-98.82038597533864 53.79550297095259 0,-96.04808836907642 58.982106990587965 0)),((-92.31720343559651 63.52820343559634 0,-87.77110699058818 67.25908836907628 0,-82.58450297095281 70.03138597533855 0,-92.31720343559651 63.52820343559634 0)),((-92.31720343559651 63.52820343559634 0,-82.58450297095281 70.03138597533855 0,-98.82038597533864 53.79550297095259 0,-92.31720343559651 63.52820343559634 0)),((-82.58450297095281 70.03138597533855 0,-71.10400000000014 72.315 0,-65.2512903395163 71.73855841209694 0,-82.58450297095281 70.03138597533855 0)),((-76.956709660484 71.73855841209689 0,-71.10400000000014 72.315 0,-82.58450297095281 70.03138597533855 0,-76.956709660484 71.73855841209689 0)),((-82.58450297095281 70.03138597533855 0,-65.2512903395163 71.73855841209694 0,-98.82038597533864 53.79550297095259 0,-82.58450297095281 70.03138597533855 0)),((-82.58450297095263 14.598614024661373 0,-59.62349702904745 70.03138597533865 0,-49.89079656440356 21.10179656440359 0,-82.58450297095263 14.598614024661373 0)),((-59.62349702904745 70.03138597533865 0,-41.104 42.315 0,-49.89079656440356 21.10179656440359 0,-59.62349702904745 70.03138597533865 0)),((-54.436893009412074 67.25908836907645 0,-49.89079656440369 63.52820343559654 0,-59.62349702904745 70.03138597533865 0,-54.436893009412074 67.25908836907645 0)),((-49.89079656440369 63.52820343559654 0,-41.680441587903125 48.16770966048404 0,-59.62349702904745 70.03138597533865 0,-49.89079656440369 63.52820343559654 0)),((-46.159911630923744 58.98210699058822 0,-43.38761402466147 53.79550297095286 0,-49.89079656440369 63.52820343559654 0,-46.159911630923744 58.98210699058822 0)),((-43.38761402466147 53.79550297095286 0,-41.680441587903125 48.16770966048404 0,-49.89079656440369 63.52820343559654 0,-43.38761402466147 53.79550297095286 0)),((-41.680441587903125 48.16770966048404 0,-41.104 42.315 0,-59.62349702904745 70.03138597533865 0,-41.680441587903125 48.16770966048404 0)))')
+

src/wkb2gltf.core.tests/GlbCreatorTests.cs

@@ -364,6 +364,20 @@ public static void CreateGlbForMultiLineString()
         var fileName = Path.Combine(TestContext.CurrentContext.WorkDirectory, "multilinestring.glb");
         File.WriteAllBytes(@"multilinestring.glb", bytes);
     }
+
+    [Test]
+    public static void CreateGlbForTin()
+    {
+        var pipelineWkt = "TIN Z (((0 0 0,0 0 1,0 1 0,0 0 0)),((0 0 0,0 1 0,1 1 0,0 0 0)))";
+        var g = Geometry.Deserialize<WktSerializer>(pipelineWkt);
+        var translation = new double[] { 0, 0, 0 };
+        var triangles = GeometryProcessor.GetTriangles(g, 100, translation);
+        Assert.That(triangles.Count, Is.EqualTo(2));
+
+        var bytes = GlbCreator.GetGlb(new List<List<Triangle>>() { triangles });
+        var fileName = Path.Combine(TestContext.CurrentContext.WorkDirectory, "tin.glb");
+        File.WriteAllBytes(@"tin.glb", bytes);
+    }
 
     [Test]
     public static void CreateGlbForLineString()

src/wkb2gltf.core/GeometryProcessor.cs

@@ -1,5 +1,6 @@
 using System;
 using System.Collections.Generic;
+using System.Linq;
 using Triangulate;
 using Wkx;
 
@@ -9,21 +10,28 @@ public static class GeometryProcessor
 {
     public static List<Triangle> GetTriangles(Geometry geometry, int batchId, double[] translation = null, double[] scale = null, ShaderColors shadercolors = null, float? radius = null)
     {
-        if (geometry is not Polygon && geometry is not MultiPolygon && geometry is not PolyhedralSurface && geometry is not LineString && geometry is not MultiLineString) {
-            throw new NotSupportedException($"Geometry type {geometry.GeometryType} is not supported");
-        }
-
         var r = radius.HasValue ? radius.Value : (float)1.0f;
 
         List<Polygon> geometries;
-        if (geometry is LineString) {
-            geometries = GetTrianglesFromLines((LineString)geometry, r, translation, scale);
-        }
-        else if (geometry is MultiLineString) {
-            geometries = GetTrianglesFromLines((MultiLineString)geometry, r, translation, scale);
-        }
-        else {
-            geometries = GetTrianglesFromPolygons(geometry, translation, scale);
+        switch (geometry)
+        {
+            case LineString lineString:
+                geometries = GetTrianglesFromLines(lineString, r, translation, scale);
+                break;
+            case MultiLineString multiLineString:
+                geometries = GetTrianglesFromLines(multiLineString, r, translation, scale);
+                break;
+            case Polygon:
+            case MultiPolygon:
+            case PolyhedralSurface:
+                geometries = GetTrianglesFromPolygons(geometry, translation);
+                break;
+            case Tin tin:
+                var nmp = new PolyhedralSurface(tin.Geometries.Select(t => new Polygon(t.ExteriorRing.Points)));
+                geometries = GetTrianglesFromPolygons(nmp, translation);
+                break;
+            default:
+                throw new NotSupportedException($"Geometry type {geometry.GeometryType} is not supported");
         }
 
         var result = GetTriangles(batchId, shadercolors, geometries);
@@ -67,17 +75,16 @@ private static List<Polygon> GetTrianglesFromPolygons(Geometry geometry, double[
 
     private static List<Polygon> GetGeometries(Geometry geometry)
     {
-        if (geometry is Polygon) {
-            return new List<Polygon>() { (Polygon)geometry };
-        }
-        else if (geometry is MultiPolygon) {
-            return ((MultiPolygon)geometry).Geometries;
-        }
-        else if (geometry is PolyhedralSurface) {
-            return ((PolyhedralSurface)geometry).Geometries;
-        }
-        else {
-            throw new NotSupportedException($"Geometry type {geometry.GeometryType} is not supported");
+        switch (geometry)
+        {
+            case Polygon polygon:
+                return new List<Polygon>() { polygon };
+            case MultiPolygon multiPolygon:
+                return multiPolygon.Geometries;
+            case PolyhedralSurface surface:
+                return surface.Geometries;
+            default:
+                throw new NotSupportedException($"Geometry type {geometry.GeometryType} is not supported");
         }
     }