public void Test_GLB_Export()
{
string fileName = "N43E005.hgt";
string sourceFile = Path.Combine("TestData", fileName + ".zip");
bool fileOk = File.Exists(sourceFile);
Assert.True(fileOk, "TestData is missing");
if (!File.Exists(fileName))
{
ZipFile.ExtractToDirectory(sourceFile, ".", true);
}
Assert.True(File.Exists(fileName), "Unzip failed.");
// Pass the full file name
fileName = Path.GetFullPath(fileName);
using (IRasterFile raster = _rasterService.OpenFile(fileName, DEMFileType.SRTM_HGT))
{
FileMetadata metaData = raster.ParseMetaData(new DEMFileDefinition(DEMFileType.SRTM_HGT, DEMFileRegistrationMode.Grid));
Assert.NotNull(metaData);
HeightMap heightMap = _elevationService.GetHeightMap(metaData)
.ReprojectGeodeticToCartesian()
.ZScale(2.5f);
var model = _sharpGltfService.CreateTerrainMesh(heightMap);
model.SaveGLB(Path.Combine(Directory.GetCurrentDirectory(), "test.glb"));
}
}
internal void Run(string gpxFile, DEMDataSet dataSet, float Z_FACTOR = 2f, int outputSrid = Reprojection.SRID_PROJECTED_MERCATOR)
{
try
{
float paddingFactor = 2f;
float ModelMaxUnits = 250f;
float GpxLineWidthSTLUnits = 0.1f;
Matrix4x4 stlTransformMatrix = Matrix4x4.CreateRotationX((float)Math.PI / 2f);
string outputDir = Path.GetFullPath(".");
//=======================
/// Line strip from GPX
///
// Get GPX points
var segments = GpxImport.ReadGPX_Segments(gpxFile);
var points = segments.SelectMany(seg => seg);
var bbox = points.GetBoundingBox().ReprojectTo(4326, outputSrid);
bbox = bbox.Pad(bbox.Width * paddingFactor, bbox.Height * paddingFactor, 0)
.ReprojectTo(outputSrid, 4326);
var gpxPointsElevated = _elevationService.GetPointsElevation(points, dataSet);
HeightMap hMap = _elevationService.GetHeightMap(ref bbox, dataSet);
hMap = hMap.ReprojectTo(4326, outputSrid)
.ZScale(Z_FACTOR)
.CenterOnOrigin()
.FitInto(ModelMaxUnits)
.BakeCoordinates();
// generate mesh
ModelRoot model = _sharpGltfService.CreateTerrainMesh(hMap, GenOptions.BoxedBaseElevationMin, stlTransformMatrix);
List <Attribution> attributions = new List <Attribution>();
attributions.Add(dataSet.Attribution);
attributions.Add(new Attribution("Generator", "DEM Net Elevation API", "https://elevationapi.com"));
_stlService.STLExport(model.LogicalMeshes[0].Primitives[0], Path.ChangeExtension(gpxFile, ".stl"), false, attributions);
var bboxPoints = bbox.ReprojectTo(4326, outputSrid).CenterOnOrigin();
gpxPointsElevated = gpxPointsElevated.ReprojectTo(4326, outputSrid)
.ZScale(Z_FACTOR)
.CenterOnOrigin(bbox.ReprojectTo(4326, outputSrid))
.FitInto(bboxPoints, ModelMaxUnits)
.ToList();
var gpxModel = _sharpGltfService.AddLine(null, "GPX", gpxPointsElevated, Vector4.One, GpxLineWidthSTLUnits, stlTransformMatrix);
_stlService.STLExport(gpxModel.LogicalMeshes[0].Primitives[0], Path.ChangeExtension(gpxFile, ".gpx.stl"), false, attributions);
}
catch (Exception ex)
{
_logger.LogError(ex, ex.Message);
}
}
public void Run()
{
try
{
DEMDataSet dataset = DEMDataSet.SRTM_GL3;
Stopwatch sw = Stopwatch.StartNew();
string modelName = $"Montagne Sainte Victoire {dataset.Name}";
// You can get your boox from https://geojson.net/ (save as WKT)
string bboxWKT = "POLYGON((5.54888 43.519525, 5.61209 43.519525, 5.61209 43.565225, 5.54888 43.565225, 5.54888 43.519525))";
_logger.LogInformation($"Processing model {modelName}...");
_logger.LogInformation($"Getting bounding box geometry...");
var bbox = GeometryService.GetBoundingBox(bboxWKT);
_logger.LogInformation($"Getting height map data...");
var heightMap = _elevationService.GetHeightMap(ref bbox, dataset);
_logger.LogInformation($"Processing height map data ({heightMap.Count} coordinates)...");
heightMap = heightMap
.ReprojectGeodeticToCartesian() // Reproject to 3857 (useful to get coordinates in meters)
.ZScale(2f) // Elevation exageration
.CenterOnOrigin() //
.FitInto(250f); // Make sure model fits into 250 coordinates units (3D printer size was 30x30cm)
// Triangule Irregular Network (not implemented to STL yet)
//var TINmesh =TINGeneration.GenerateTIN(heightMap, 2, _glTFService, null, 3857);
// Triangulate height map
// and add base and sides
_logger.LogInformation($"Triangulating height map and generating box (5mm thick)...");
// STL axis differ from glTF
var model = _sharpGltfService.CreateTerrainMesh(heightMap, GenOptions.BoxedBaseElevationMin, Matrix4x4.CreateRotationX((float)Math.PI / 2f));
_logger.LogInformation($"Exporting STL model...");
var stlFilePath = Path.Combine(Directory.GetCurrentDirectory(), $"{modelName}.stl");
_stlService.STLExport(model.LogicalMeshes[0].Primitives[0], stlFilePath, false);
_logger.LogInformation($"Model exported in {stlFilePath}.");
_logger.LogInformation($"Done in {sw.Elapsed:g}");
}
catch (Exception ex)
{
_logger.LogError(ex, ex.Message);
}
}
public void Run()
{
try
{
DEMDataSet dataset = DEMDataSet.AW3D30;
ImageryProvider imageryProvider = ImageryProvider.MapBoxSatellite;
Stopwatch sw = Stopwatch.StartNew();
string modelName = $"Montagne Sainte Victoire {dataset.Name}";
string outputDir = Directory.GetCurrentDirectory();
// You can get your boox from https://geojson.net/ (save as WKT)
string bboxWKT = "POLYGON((5.54888 43.519525, 5.61209 43.519525, 5.61209 43.565225, 5.54888 43.565225, 5.54888 43.519525))";
_logger.LogInformation($"Processing model {modelName}...");
_logger.LogInformation($"Getting bounding box geometry...");
var bbox = GeometryService.GetBoundingBox(bboxWKT);
_logger.LogInformation($"Getting height map data...");
var heightMap = _elevationService.GetHeightMap(ref bbox, dataset);
_logger.LogInformation($"Processing height map data ({heightMap.Count} coordinates)...");
heightMap = heightMap
.ReprojectGeodeticToCartesian() // Reproject to 3857 (useful to get coordinates in meters)
.ZScale(2f) // Elevation exageration
.CenterOnOrigin();
TileRange tiles = _imageryService.DownloadTiles(bbox, imageryProvider, 8);
var texture = _imageryService.ConstructTexture(tiles, bbox, Path.Combine(outputDir, modelName + "_texture.jpg"), TextureImageFormat.image_jpeg);
var normalMap = _imageryService.GenerateNormalMap(heightMap, outputDir, modelName + "_normalmap.png");
var pbrTexture = PBRTexture.Create(texture, normalMap);
// Triangulate height map
_logger.LogInformation($"Triangulating height map and generating 3D mesh...");
var model = _sharpGltfService.CreateTerrainMesh(heightMap, pbrTexture);
model.SaveGLB(Path.Combine(Directory.GetCurrentDirectory(), modelName + ".glb"));
_logger.LogInformation($"Done in {sw.Elapsed:g}");
}
catch (Exception ex)
{
_logger.LogError(ex, ex.Message);
}
}
public void GenerateModel(string bboxWkt, DEMDataSet litto3DDataset, ImageryProvider imageryProvider, float zFactor = 3f, bool withTexture = true, bool withboat = true, bool withWaterSurface = true, DEMDataSet fallbackDataset = null)
{
try
{
bool centerOnOrigin = true;
int TEXTURE_TILES = 20;
string outputDir = Directory.GetCurrentDirectory();
string modelName = $"{litto3DDataset.ResolutionMeters}m_z{zFactor}_{imageryProvider.Name}-{DateTime.Now:yyyyMMdd-hhmmss}";
_logger.LogInformation($"Getting height map data...");
var bbox = GeometryService.GetBoundingBox(bboxWkt).ReprojectTo(4326, litto3DDataset.SRID);
var heightMap = _elevationService.GetHeightMap(ref bbox, litto3DDataset);
heightMap = heightMap.BakeCoordinates();
var nullCoordsEnumerator = heightMap.Coordinates.Where(c => (c.Elevation ?? litto3DDataset.NoDataValue) == litto3DDataset.NoDataValue);
var interpolator = _elevationService.GetInterpolator(InterpolationMode.Bilinear);
using (IRasterFile raster = _rasterService.OpenFile(@"D:\Data\ELEVATION_DO_NOT_DELETE\GEBCO2020\cote azur\gebco_2020_subset.tif", DEMFileType.GEOTIFF))
using (RasterFileDictionary dic = new RasterFileDictionary())
{
var metadata = raster.ParseMetaData(fallbackDataset.FileFormat);
dic.Add(metadata, raster);
foreach (var pt in nullCoordsEnumerator)
{
var proj = pt.ReprojectTo(litto3DDataset.SRID, fallbackDataset.SRID);
pt.Elevation = _elevationService.GetElevationAtPoint(raster, dic, metadata, proj.Latitude, proj.Longitude, 0, interpolator, NoDataBehavior.UseNoDataDefinedInDem);
}
}
var nullCoords = heightMap.Coordinates.Where(c => (c.Elevation ?? litto3DDataset.NoDataValue) == litto3DDataset.NoDataValue).ToList();
var nullCoordsFallbackProj = nullCoords.ReprojectTo(litto3DDataset.SRID, fallbackDataset.SRID, nullCoords.Count);
var nullCoordsFallbackProj2 = _elevationService.GetPointsElevation(nullCoordsFallbackProj, fallbackDataset, InterpolationMode.Bilinear, NoDataBehavior.UseNoDataDefinedInDem);
ModelGenerationTransform transform = new ModelGenerationTransform(bbox, 3857, centerOnOrigin: centerOnOrigin, zFactor, centerOnZOrigin: false);
ModelGenerationTransform transformFrom4326 = new ModelGenerationTransform(bbox.ReprojectTo(2154, 4326), 3857, centerOnOrigin: centerOnOrigin, zFactor, centerOnZOrigin: false);
_logger.LogInformation($"Processing height map data ({heightMap.Count} coordinates)...");
heightMap = transform.TransformHeightMap(heightMap);
var min = heightMap.Coordinates.Where(g => (g.Elevation ?? 0d) > litto3DDataset.NoDataValue).Min(g => g.Elevation ?? 0d);
heightMap.Coordinates = heightMap.Coordinates.Select(p =>
{
if (p.Elevation.GetValueOrDefault(0) <= litto3DDataset.NoDataValue)
{
p.Elevation = min;
}
return(p);
});
//=======================
// Textures
//
PBRTexture pbrTexture = null;
if (withTexture)
{
var bbox4326 = bbox.ReprojectTo(2154, 4326);
Console.WriteLine("Download image tiles...");
TileRange tiles = _imageryService.DownloadTiles(bbox4326, imageryProvider, TEXTURE_TILES);
string fileName = Path.Combine(outputDir, "Texture.jpg");
Console.WriteLine("Construct texture...");
//TextureInfo texInfo = _imageryService.ConstructTexture(tiles, bbox4326, fileName, TextureImageFormat.image_jpeg);
TextureInfo texInfo;
if (withboat)
{
var trackPoints = GetGeoPointFromGeoJson(BoatCourseGeoJson);
texInfo = _imageryService.ConstructTextureWithGpxTrack(tiles, bbox4326, fileName, TextureImageFormat.image_jpeg, trackPoints, drawGpxVertices: true, color: SixLabors.ImageSharp.PixelFormats.Rgba32.Green, 30);
}
else
{
texInfo = _imageryService.ConstructTexture(tiles, bbox4326, fileName, TextureImageFormat.image_jpeg);
}
//
//=======================
//=======================
// Normal map
Console.WriteLine("Height map...");
//float Z_FACTOR = 0.00002f;
//hMap = hMap.CenterOnOrigin().ZScale(Z_FACTOR);
//var normalMap = _imageryService.GenerateNormalMap(heightMap, outputDir);
pbrTexture = PBRTexture.Create(texInfo, null);// normalMap);
//hMap = hMap.CenterOnOrigin(Z_FACTOR);
//
//=======================
}
// Triangulate height map
// and add base and sides
_logger.LogInformation($"Triangulating height map and generating 3D mesh...");
heightMap = heightMap.BakeCoordinates();
var coords = heightMap.Coordinates.ToList();
var model = _sharpGltfService.CreateTerrainMesh(heightMap, pbrTexture);
if (withWaterSurface)
{
var bottomLeft = coords[heightMap.Width * (heightMap.Height - 1)].AsVector3(); bottomLeft.Z = 0;
var topRight = coords[heightMap.Width - 1].AsVector3(); topRight.Z = 0;
var topLeft = coords[0].AsVector3(); topLeft.Z = 0;
var bottomRight = coords.Last().AsVector3(); bottomRight.Z = 0;
var waterSurface = _meshService.CreateWaterSurface(bottomLeft, topRight, topLeft, bottomRight,
minZ: (float)min,
color: VectorsExtensions.CreateColor(0, 150, 255, 64));
model = _sharpGltfService.AddMesh(model, "Water", waterSurface, doubleSided: true);
}
if (withboat)
{
var boatInitPos = centerOnOrigin ? new GeoPoint(0, 0).AsVector3() : new GeoPoint(43.010625204304304, 6.3711613671060086).ReprojectTo(4326, 3857).AsVector3();
var axis = _meshService.CreateAxis(2, 10, 3, 3).Translate(boatInitPos);
model = _sharpGltfService.AddMesh(model, "Boat", axis, doubleSided: false);
var boatCourse = transformFrom4326.TransformPoints(GetGeoPointFromGeoJson(BoatCourseGeoJson)).ToList(); //ReprojectGeodeticToCartesian().CenterOnOrigin().ToList();
model = _sharpGltfService.AddLine(model, "BoatCourse", boatCourse, VectorsExtensions.CreateColor(255, 0, 0, 128), 4);
}
model.SaveGLB(Path.Combine(Directory.GetCurrentDirectory(), modelName + ".glb"));
_logger.LogInformation($"Model exported as {Path.Combine(Directory.GetCurrentDirectory(), modelName + ".gltf")} and .glb");
//var point = new GeoPoint(43.01142119356318, 6.385200681010872).ReprojectTo(4326, 2154);
//point = _elevationService.GetPointElevation(point, litto3DDataset);
}
catch (Exception e)
{
_logger.LogError(e, e.Message);
}
}
internal void Run(DEMDataSet dataSet, bool trackIn3D = true, bool generateTIN = false, int outputSrid = Reprojection.SRID_PROJECTED_LAMBERT_93)
{
try
{
string _gpxFile = Path.Combine("SampleData", "GPX", "lake-pleasant-camping.gpx");
bool withTexture = true;
float Z_FACTOR = 1.8f;
float Z_TRANSLATE_GPX_TRACK_METERS = 5;
float trailWidthMeters = 5f;
int skipGpxPointsEvery = 1;
ImageryProvider provider = ImageryProvider.MapBoxSatellite; // new TileDebugProvider(null, maxDegreeOfParallelism: 1);// ImageryProvider.MapBoxSatellite;
string outputDir = Path.GetFullPath(".");
//=======================
/// Line strip from GPX
///
// Get GPX points
var segments = GpxImport.ReadGPX_Segments(_gpxFile);
var points = segments.SelectMany(seg => seg);
var bbox = points.GetBoundingBox().Scale(1.1, 1.1).ReprojectTo(4326, dataSet.SRID);
// DEBUG
// Test case : ASTER GDEMv3 : 5.5 43.5 Z=315
// 303 307 308
// 309 *315* 317
// 314 321 324
//points = GenerateDebugTrailPointsGenerateDebugTrailPoints(5.003, 5.006, 43.995, 43.997, 0.0001, 0.001);
//points = GenerateDebugTrailPointsGenerateDebugTrailPoints(5.4990, 5.501, 43.4990, 43.501, 0.0001, 0.001);
//points = GenerateDebugTrailPointsGenerateDebugTrailPoints(5.49, 5.51, 43.49, 43.51, 0.0005, 0.001);
//bbox = points.GetBoundingBox().Scale(1.3,1.3);
IEnumerable <GeoPoint> gpxPointsElevated = _elevationService.GetPointsElevation(points, dataSet);
//
//=======================
//=======================
/// Height map (get dem elevation for bbox)
///
HeightMap hMap = _elevationService.GetHeightMap(ref bbox, dataSet);
// var refPoint = new GeoPoint(43.5, 5.5);
// hMap = hMap.BakeCoordinates();
// var hMapRefPoint = hMap.Coordinates.OrderBy(c => c.DistanceSquaredTo(refPoint)).First();
// var gpxRefPoint = gpxPointsElevated.OrderBy(c => c.DistanceSquaredTo(refPoint)).First();
// hMapRefPoint.Elevation += 60;
// gpxRefPoint.Elevation += 60;
hMap = hMap.ReprojectTo(dataSet.SRID, outputSrid)
//.CenterOnOrigin()
.ZScale(Z_FACTOR)
.BakeCoordinates();
//
//=======================
//=======================
// Textures
//
PBRTexture pbrTexture = null;
if (withTexture)
{
Console.WriteLine("Download image tiles...");
TileRange tiles = _imageryService.DownloadTiles(bbox, provider, 12);
string fileName = Path.Combine(outputDir, "Texture.jpg");
Console.WriteLine("Construct texture...");
//TextureInfo texInfo = _imageryService.ConstructTextureWithGpxTrack(tiles, bbox, fileName, TextureImageFormat.image_jpeg, gpxPointsElevated, false);
TextureInfo texInfo = _imageryService.ConstructTexture(tiles, bbox, fileName, TextureImageFormat.image_jpeg);
//
//=======================
//=======================
// Normal map
Console.WriteLine("Height map...");
//float Z_FACTOR = 0.00002f;
//hMap = hMap.CenterOnOrigin().ZScale(Z_FACTOR);
//var normalMap = _imageryService.GenerateNormalMap(hMap, outputDir);
//pbrTexture = PBRTexture.Create(texInfo, normalMap);
pbrTexture = PBRTexture.Create(texInfo, null);
//hMap = hMap.CenterOnOrigin(Z_FACTOR);
//
//=======================
}
//=======================
// MESH 3D terrain
Console.WriteLine("Height map...");
Console.WriteLine("GenerateTriangleMesh...");
//hMap = _elevationService.GetHeightMap(bbox, _dataSet);
ModelRoot model = null;
if (generateTIN)
{
model = TINGeneration.GenerateTIN(hMap, 10d, _sharpGltfService, pbrTexture, outputSrid);
}
else
{
//hMap = hMap.CenterOnOrigin().ZScale(Z_FACTOR);
// generate mesh with texture
model = _sharpGltfService.CreateTerrainMesh(hMap, pbrTexture);
}
if (trackIn3D)
{
// take 1 point evert nth
gpxPointsElevated = gpxPointsElevated.Where((x, i) => (i + 1) % skipGpxPointsEvery == 0);
gpxPointsElevated = gpxPointsElevated.ZTranslate(Z_TRANSLATE_GPX_TRACK_METERS)
.ReprojectTo(dataSet.SRID, outputSrid)
//.CenterOnOrigin()
//.CenterOnOrigin(hMap.BoundingBox)
.ZScale(Z_FACTOR);
model = _sharpGltfService.AddLine(model, "GPX", gpxPointsElevated, VectorsExtensions.CreateColor(255, 0, 0, 128), trailWidthMeters);
}
// model export
Console.WriteLine("GenerateModel...");
model.SaveGLB(Path.Combine(Directory.GetCurrentDirectory(), $"{GetType().Name} dst{dataSet.Name} TIN{generateTIN} Srid{outputSrid}.glb"));
}
catch (Exception ex)
{
_logger.LogError(ex, ex.Message);
}
}
public void Run(DEMDataSet dataset, bool withTexture = true)
{
try
{
//_rasterService.GenerateDirectoryMetadata(dataset, false);
Stopwatch sw = Stopwatch.StartNew();
string modelName = $"Montagne Sainte Victoire {dataset.Name}";
string outputDir = Directory.GetCurrentDirectory();
ImageryProvider provider = ImageryProvider.MapBoxSatelliteStreet;// new TileDebugProvider(new GeoPoint(43.5,5.5));
// You can get your boox from https://geojson.net/ (save as WKT)
string bboxWKT = "POLYGON((5.54888 43.519525, 5.61209 43.519525, 5.61209 43.565225, 5.54888 43.565225, 5.54888 43.519525))";
// string bboxWKT =
// "POLYGON((5.594457381483949 43.545276557046044,5.652135604140199 43.545276557046044,5.652135604140199 43.52038635099936,5.594457381483949 43.52038635099936,5.594457381483949 43.545276557046044))";
// _logger.LogInformation($"Processing model {modelName}...");
//
//
// _logger.LogInformation($"Getting bounding box geometry...");
var bbox = GeometryService.GetBoundingBox(bboxWKT);
//var bbox = new BoundingBox(5.5613898348431485,5.597185285307553,43.49372969433046,43.50939068558466);
_logger.LogInformation($"Getting height map data...");
var heightMap = _elevationService.GetHeightMap(ref bbox, dataset);
_logger.LogInformation($"Processing height map data ({heightMap.Count} coordinates)...");
heightMap = heightMap
.ReprojectGeodeticToCartesian() // Reproject to 3857 (useful to get coordinates in meters)
.ZScale(2f); // Elevation exageration
//=======================
// Textures
//
PBRTexture pbrTexture = null;
if (withTexture)
{
Console.WriteLine("Download image tiles...");
TileRange tiles = _imageryService.DownloadTiles(bbox, provider, TEXTURE_TILES);
string fileName = Path.Combine(outputDir, "Texture.jpg");
Console.WriteLine("Construct texture...");
TextureInfo texInfo = _imageryService.ConstructTexture(tiles, bbox, fileName, TextureImageFormat.image_jpeg);
//
//=======================
//=======================
// Normal map
Console.WriteLine("Height map...");
//float Z_FACTOR = 0.00002f;
//hMap = hMap.CenterOnOrigin().ZScale(Z_FACTOR);
var normalMap = _imageryService.GenerateNormalMap(heightMap, outputDir);
pbrTexture = PBRTexture.Create(texInfo, normalMap);
//hMap = hMap.CenterOnOrigin(Z_FACTOR);
//
//=======================
}
// Triangulate height map
// and add base and sides
_logger.LogInformation($"Triangulating height map and generating 3D mesh...");
var model = _sharpGltfService.CreateTerrainMesh(heightMap, pbrTexture);
model.SaveGLB(Path.Combine(Directory.GetCurrentDirectory(), modelName + ".glb"));
model = _sharpGltfService.CreateTerrainMesh(heightMap, GenOptions.Normals | GenOptions.BoxedBaseElevationMin);
model.SaveGLB(Path.Combine(Directory.GetCurrentDirectory(), modelName + "_normalsBox.glb"));
_logger.LogInformation($"Model exported as {Path.Combine(Directory.GetCurrentDirectory(), modelName + ".gltf")} and .glb");
_logger.LogInformation($"Done in {sw.Elapsed:g}");
}
catch (Exception ex)
{
_logger.LogError(ex, ex.Message);
}
}
public void Run(DEMDataSet dataset, bool withTexture = true)
{
try
{
int TEXTURE_TILES = 4; // 4: med, 8: high
//_rasterService.GenerateDirectoryMetadata(dataset, false);
Stopwatch sw = Stopwatch.StartNew();
string modelName = $"MontBlanc_{dataset.Name}";
string outputDir = Directory.GetCurrentDirectory();
ImageryProvider provider = ImageryProvider.EsriWorldImagery;// new TileDebugProvider(new GeoPoint(43.5,5.5));
//// You can get your boox from https://geojson.net/ (save as WKT)
//string bboxWKT = "POLYGON((5.54888 43.519525, 5.61209 43.519525, 5.61209 43.565225, 5.54888 43.565225, 5.54888 43.519525))";
//// string bboxWKT =
//// "POLYGON((5.594457381483949 43.545276557046044,5.652135604140199 43.545276557046044,5.652135604140199 43.52038635099936,5.594457381483949 43.52038635099936,5.594457381483949 43.545276557046044))";
//// _logger.LogInformation($"Processing model {modelName}...");
////
////
//// _logger.LogInformation($"Getting bounding box geometry...");
//var bbox = GeometryService.GetBoundingBox(bboxWKT);
// DjebelMarra
var bbox = new BoundingBox(24.098067346557492, 24.42468219234563, 12.7769822830208, 13.087504129660111);
// MontBlanc
//var bbox = GeometryService.GetBoundingBox("POLYGON((6.618804355541963 45.9658287141746,7.052764316479463 45.9658287141746,7.052764316479463 45.72379929776474,6.618804355541963 45.72379929776474,6.618804355541963 45.9658287141746))");
//var bbox = new BoundingBox(5.5613898348431485,5.597185285307553,43.49372969433046,43.50939068558466);
_logger.LogInformation($"Getting height map data...");
var heightMap = _elevationService.GetHeightMap(ref bbox, dataset);
ModelGenerationTransform transform = new ModelGenerationTransform(bbox, 3857, true, 1.5f, true);
_logger.LogInformation($"Processing height map data ({heightMap.Count} coordinates)...");
heightMap = transform.TransformHeightMap(heightMap);
//=======================
// Textures
//
PBRTexture pbrTexture = null;
if (withTexture)
{
Console.WriteLine("Download image tiles...");
TileRange tiles = _imageryService.DownloadTiles(bbox, provider, TEXTURE_TILES);
string fileName = Path.Combine(outputDir, "Texture.jpg");
Console.WriteLine("Construct texture...");
TextureInfo texInfo = _imageryService.ConstructTexture(tiles, bbox, fileName, TextureImageFormat.image_jpeg);
//
//=======================
//=======================
// Normal map
Console.WriteLine("Height map...");
//float Z_FACTOR = 0.00002f;
//hMap = hMap.CenterOnOrigin().ZScale(Z_FACTOR);
var normalMap = _imageryService.GenerateNormalMap(heightMap, outputDir);
pbrTexture = PBRTexture.Create(texInfo, normalMap);
//hMap = hMap.CenterOnOrigin(Z_FACTOR);
//
//=======================
}
// Triangulate height map
// and add base and sides
_logger.LogInformation($"Triangulating height map and generating 3D mesh...");
var model = _sharpGltfService.CreateTerrainMesh(heightMap, pbrTexture);
model.SaveGLB(Path.Combine(Directory.GetCurrentDirectory(), modelName + ".glb"));
model.SaveAsWavefront(Path.Combine(Directory.GetCurrentDirectory(), modelName + ".obj"));
model = _sharpGltfService.CreateTerrainMesh(heightMap, GenOptions.Normals | GenOptions.BoxedBaseElevationMin);
model.SaveGLB(Path.Combine(Directory.GetCurrentDirectory(), modelName + "_normalsBox.glb"));
model.SaveAsWavefront(Path.Combine(Directory.GetCurrentDirectory(), modelName + "_normalsBox.obj"));
_logger.LogInformation($"Model exported as {Path.Combine(Directory.GetCurrentDirectory(), modelName + ".gltf")} and .glb");
_logger.LogInformation($"Done in {sw.Elapsed:g}");
}
catch (Exception ex)
{
_logger.LogError(ex, ex.Message);
}
}
private (ModelRoot Model, double widthMeters, double heightMeters, double averageElevation, BoundingBox projectedBbox) GenerateSampleModel(BoundingBox bbox, DEMDataSet dataset, bool withTexture = true)
{
try
{
int TEXTURE_TILES = 8; // 4: med, 8: high
string outputDir = Directory.GetCurrentDirectory();
//_rasterService.GenerateDirectoryMetadata(dataset, false);
ImageryProvider provider = ImageryProvider.MapBoxSatellite;// new TileDebugProvider(new GeoPoint(43.5,5.5));
_logger.LogInformation($"Getting height map data...");
var heightMap = _elevationService.GetHeightMap(ref bbox, dataset);
var wgs84bbox = bbox;
ModelGenerationTransform transform = new ModelGenerationTransform(bbox, 3857, true, 1.5f, true);
_logger.LogInformation($"Processing height map data ({heightMap.Count} coordinates)...");
heightMap = transform.TransformHeightMap(heightMap);
//=======================
// Textures
//
PBRTexture pbrTexture = null;
if (withTexture)
{
Console.WriteLine("Download image tiles...");
TileRange tiles = _imageryService.DownloadTiles(bbox, provider, TEXTURE_TILES);
string fileName = Path.Combine(outputDir, "Texture.jpg");
Console.WriteLine("Construct texture...");
TextureInfo texInfo = _imageryService.ConstructTexture(tiles, bbox, fileName, TextureImageFormat.image_jpeg);
//
//=======================
//=======================
// Normal map
Console.WriteLine("Height map...");
//float Z_FACTOR = 0.00002f;
//hMap = hMap.CenterOnOrigin().ZScale(Z_FACTOR);
//var normalMap = _imageryService.GenerateNormalMap(heightMap, outputDir);
pbrTexture = PBRTexture.Create(texInfo, null);
//hMap = hMap.CenterOnOrigin(Z_FACTOR);
//
//=======================
}
// Triangulate height map
// and add base and sides
_logger.LogInformation($"Triangulating height map and generating 3D mesh...");
var model = _sharpGltfService.CreateTerrainMesh(heightMap, pbrTexture);
var width = new GeoPoint(wgs84bbox.Center[1], bbox.Center[0] - bbox.Width / 2f).DistanceTo(new GeoPoint(wgs84bbox.Center[1], bbox.Center[0] + bbox.Width / 2f));
var height = new GeoPoint(bbox.Center[1] - bbox.Height / 2f, wgs84bbox.Center[0]).DistanceTo(new GeoPoint(bbox.Center[1] + bbox.Height, wgs84bbox.Center[0]));
return(model, width, height, wgs84bbox.Center[2], heightMap.BoundingBox);
}
catch (Exception ex)
{
_logger.LogError(ex, ex.Message);
return(null, 0, 0, 0, null);
}
}