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);
}
}
internal void RunGPX(DEMDataSet largeDataSet, DEMDataSet localDataset)
{
try
{
string outputDir = Path.GetFullPath(".");
string _gpxFile = Path.Combine("SampleData", "20191022-Puch-Pöllau.gpx");
string sensorLogFile = Path.Combine("SampleData", "20191023-Puch-Pöllau-sensorlog.json");
var sensorLog = SensorLog.FromJson(sensorLogFile);
//sensorLog.Plot("sensorLog.png");
string balloonModel = Path.Combine("SampleData", "OE-SOE.glb");
float Z_FACTOR = 2f;
float trailWidthMeters = 5f;
ModelRoot balloon = ModelRoot.Load(balloonModel);
//=======================
/// Line strip from GPX
///
// Get GPX points
var segments = GpxImport.ReadGPX_Segments <GpxTrackPoint>(_gpxFile, p => p);
var pointsGpx = segments.SelectMany(seg => seg);
var geoPoints = pointsGpx.ToGeoPoints();
var model = _sharpGltfService.CreateNewModel();
//var largeMesh = GetMeshFromGpxTrack(outputDir, largeDataSet, geoPoints
// , bboxScale: 5
// , zFactor: Z_FACTOR
// , generateTIN: false
// , tinPrecision: 500d
// , drawGpxOnTexture: false
// , ImageryProvider.OpenTopoMap);
//meshes.Add(largeMesh);
model = GetMeshFromGpxTrack(model, outputDir, localDataset, geoPoints
, bboxScale: (1.3, 1.5)
, zFactor: Z_FACTOR
, generateTIN: false
, tinPrecision: 50d
, drawGpxOnTexture: true
, ImageryProvider.EsriWorldImagery);
var gpxPoints = geoPoints.ReprojectGeodeticToCartesian().ZScale(Z_FACTOR);
model = _sharpGltfService.AddLine(model, gpxPoints, new Vector4(0, 1, 0, 0.5f), trailWidthMeters);
// model export
Console.WriteLine("GenerateModel...");
var node = model.LogicalNodes.First();
pointsGpx = pointsGpx.ReprojectGeodeticToCartesian().ZScale(Z_FACTOR);
// animations
node = CreateAnimationFromGpx("GPX", node, pointsGpx, 1f);
node = CreateAnimationFromGpx("GPX x500", node, pointsGpx, 500f);
var sceneBuilderBalloon = balloon.DefaultScene.ToSceneBuilder();
var sceneBuilderTerrain = model.DefaultScene.ToSceneBuilder();
//sceneBuilderBalloon.
model.SaveGLB(Path.Combine(Directory.GetCurrentDirectory(), $"{GetType().Name}.glb"));
}
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(), $"{GetType().Name} dst{dataSet.Name} TIN{generateTIN} Srid{outputSrid}.glb"));
}
catch (Exception ex)
{
_logger.LogError(ex, ex.Message);
}
}
/// <summary>
/// Generates a VisualTopo file 3D model
/// </summary>
/// <remarks>LT* (Lambert Carto) projections are not supported and could produce imprecise results (shifted by +10meters)</remarks>
/// <param name="vtopoFile">VisualTopo .TRO file</param>
/// <param name="imageryProvider">Imagery provider for terrain texture. Set to null for untextured model</param>
/// <param name="bboxMarginMeters">Terrain margin (meters) around VisualTopo model</param>
public void Run_3DModelGeneration(string vtopoFile, ImageryProvider imageryProvider, float bboxMarginMeters = 1000, bool generateTopoOnlyModel = false, float zFactor = 1f)
{
try
{
//=======================
// Generation params
//
int outputSRID = 3857; // Output SRID
float lineWidth = 1.0F; // Topo lines width (meters)
var dataset = DEMDataSet.AW3D30; // DEM dataset for terrain and elevation
int TEXTURE_TILES = 8; // Texture quality (number of tiles for bigger side) 4: med, 8: high, 12: ultra
string outputDir = Directory.GetCurrentDirectory();
bool GENERATE_LINE3D = false;
//=======================
// Open and parse file
//
// model will have available properties
// => Graph (nodes/arcs)
// => BoundingBox
// => Topology3D -> list of point-to-point lines
// => SRID of model file
StopwatchLog timeLog = StopwatchLog.StartNew(_logger);
VisualTopoModel model = _visualTopoService.LoadFile(vtopoFile, Encoding.GetEncoding("ISO-8859-1")
, decimalDegrees: true
, ignoreRadialBeams: true
, zFactor);
timeLog.LogTime($"Loading {vtopoFile} model file");
// for debug,
//var b = GetBranches(model); // graph list of all nodes
//var lowestPoint = model.Sets.Min(s => s.Data.Min(d => d.GlobalGeoPoint?.Elevation ?? 0));
BoundingBox bbox = model.BoundingBox // relative coords
.Translate(model.EntryPoint.Longitude, model.EntryPoint.Latitude, model.EntryPoint.Elevation ?? 0) // absolute coords
.Pad(bboxMarginMeters) // margin around model
.ReprojectTo(model.SRID, dataset.SRID); // DEM coords
// Get height map
// Note that ref Bbox means that the bbox will be adjusted to match DEM data
var heightMap = _elevationService.GetHeightMap(ref bbox, dataset, downloadMissingFiles: true);
var bboxTerrainSpace = bbox.ReprojectTo(dataset.SRID, outputSRID); // terrain coords
timeLog.LogTime("Terrain height map");
//=======================
// Get entry elevation (need to reproject to DEM coordinate system first)
// and sections entry elevations
//
_visualTopoService.ComputeFullCavityElevations(model, dataset, zFactor); // will add TerrainElevationAbove and entry elevations
_visualTopoService.Create3DTriangulation(model);
timeLog.LogTime("Cavity points elevation");
// Model origin
GeoPoint axisOriginWorldSpace = model.EntryPoint.ReprojectTo(model.SRID, outputSRID)
.CenterOnOrigin(bboxTerrainSpace);
Vector3 axisOriginModelSpace = model.EntryPoint.AsVector3();
//=======================
// Local transform function from model coordinates (relative to entry, in meters)
// and global coordinates absolute in final 3D model space
//
IEnumerable <GeoPoint> TransformLine(IEnumerable <GeoPoint> line)
{
var newLine = line.Translate(model.EntryPoint) // Translate to entry (=> global topo coord space)
.ReprojectTo(model.SRID, outputSRID) // Reproject to terrain coord space
.CenterOnOrigin(bboxTerrainSpace) // Center on terrain space origin
.CenterOnOrigin(axisOriginWorldSpace);
return(newLine);
};
//=======================
// 3D model
//
var gltfModel = _gltfService.CreateNewModel();
// Add X/Y/Z axis on entry point
var axis = _meshService.CreateAxis();
_gltfService.AddMesh(gltfModel, "Axis", axis, doubleSided: false);
int i = 0;
var triangulation = model.TriangulationFull3D.Clone()
.Translate(axisOriginModelSpace) // already zScaled if zFactor > 1
.ReprojectTo(model.SRID, outputSRID)
.CenterOnOrigin(bboxTerrainSpace)
.CenterOnOrigin(axisOriginWorldSpace.AsVector3());
gltfModel = _gltfService.AddMesh(gltfModel, "Cavite3D", model.TriangulationFull3D, VectorsExtensions.CreateColor(0, 255, 0), doubleSided: false);
if (GENERATE_LINE3D)
{
foreach (var line in model.Topology3D) // model.Topology3D is the graph of topo paths
{
// Add line to model
gltfModel = _gltfService.AddLine(gltfModel
, string.Concat("GPX", i++) // name of 3D node
, TransformLine(line) // call transform function
, color: VectorsExtensions.CreateColor(255, 0, 0, 128)
, lineWidth);
}
}
timeLog.LogTime("Topo 3D model");
//axis = _meshService.CreateAxis(10,100);
//_gltfService.AddMesh(gltfModel, "Axis", axis, doubleSided: false);
if (generateTopoOnlyModel)
{
// Uncomment this to save 3D model for topo only (without terrain)
gltfModel.SaveGLB(string.Concat(Path.GetFileNameWithoutExtension(vtopoFile) + $"Z{zFactor}_TopoOnly.glb"));
}
// Reproject and center height map coordinates
heightMap = heightMap.ReprojectTo(dataset.SRID, outputSRID)
.CenterOnOrigin(bboxTerrainSpace)
.ZScale(zFactor)
.CenterOnOrigin(axisOriginWorldSpace);
//.BakeCoordinates();
timeLog.LogTime("Height map transform");
//=======================
// Textures
//
PBRTexture pbrTexture = null;
if (imageryProvider != null)
{
TileRange tiles = _imageryService.DownloadTiles(bbox, imageryProvider, TEXTURE_TILES);
string fileName = Path.Combine(outputDir, "Texture.jpg");
timeLog.LogTime("Imagery download");
Console.WriteLine("Construct texture...");
//TextureInfo texInfo = _imageryService.ConstructTexture(tiles, bbox, fileName, TextureImageFormat.image_jpeg);
var topoTexture = model.Topology3D.SelectMany(l => l).Translate(model.EntryPoint).ReprojectTo(model.SRID, 4326);
TextureInfo texInfo = _imageryService.ConstructTextureWithGpxTrack(tiles, bbox, fileName, TextureImageFormat.image_jpeg
, topoTexture, false);
pbrTexture = PBRTexture.Create(texInfo, null);
timeLog.LogTime("Texture creation");
}
//
//=======================
// Triangulate height map
_logger.LogInformation($"Triangulating height map and generating 3D mesh...");
gltfModel = _gltfService.AddTerrainMesh(gltfModel, heightMap, pbrTexture);
gltfModel.SaveGLB(string.Concat(Path.GetFileNameWithoutExtension(vtopoFile) + $"Z{zFactor}.glb"));
timeLog.LogTime("3D model");
}
catch (Exception ex)
{
_logger.LogError("Error :" + ex.Message);
}
}