/// <summary>
/// Creates normals for the OPC in opcBasePath and saves them as Normals.aara.
/// </summary>
public static void BuildNormals(OpcPaths opcPaths, bool overrideExisting = false, IObserver <Tup <float, string> > progress = null, CancellationToken cancelToken = default(CancellationToken))
{
var normalFileName = "Normals.aara";
var posFiles = StorageConfig.GetDirectories(opcPaths.PatchesSubDir)
.SelectMany(x => StorageConfig.GetFiles(x))
.Where(fileWpath => fileWpath.EndsWith("Positions.aara", StringComparison.OrdinalIgnoreCase));
foreach (var file in posFiles)
{
if (cancelToken.IsCancellationRequested)
{
if (progress != null)
{
progress.OnNext(Tup.Create(0f, "Building normals cancelled."));
progress.OnCompleted();
}
cancelToken.ThrowIfCancellationRequested();
}
var normalsFilePath = Path.Combine(Path.GetDirectoryName(file), normalFileName);
if (overrideExisting || !StorageConfig.FileExists(normalsFilePath))
{
var posAara = AaraData.FromFile(file);
var tileSize = new V2i(posAara.Size[0], posAara.Size[1]);
var posArray = AaraData.ConvertArrayToV3ds[posAara.DataTypeAsSymbol](posAara.LoadElements());
var invalidPoints = OpcIndices.GetInvalidPositions(posArray);
var indices = OpcIndices.ComputeIndexArray(tileSize, invalidPoints);
var normals = OpcIndices.GenerateVertexNormals(indices, posArray)
.Select(p => p.ToV3f()).ToArray();
WriteV3fArrayAsAara(normalsFilePath, normals, tileSize);
}
if (progress != null)
{
progress.OnNext(Tup.Create(1f / posFiles.Count(), ""));
}
}
if (progress != null)
{
progress.OnCompleted();
}
}
public static IPointSampleGrid2d PointSampleGrid2dFromAaraFile(string fileName)
{
if (fileName == null)
{
throw new ArgumentNullException();
}
var aara = AaraData.FromFile(fileName);
// extract grid resolution
var res = aara.Size;
if (res.Length != 2)
{
throw new ArgumentException("encountered aara file of unexpected dimensions - 2 expected");
}
// extract points
var elements = aara.LoadElements();
V3d[] points = elements as V3d[];
if (points == null)
{
if (elements is V3f[])
{
points = elements.CopyAndConvert(V3d.FromV3f);
}
else
{
throw new ArgumentException(".aara contains unexpected type - V3d or V3f expected");
}
}
return(new PointSampleGrid2d(new PointSampleSet(points), new V2i(res[0], res[1])));
}
public PatchFileHandle(PatchFileHandle pfh)
: this()
{
PatchTree = pfh.PatchTree;
FileLoader = new AaraData(pfh.FileLoader);
}
/// <summary>
/// Builds look up table for profile "intersection" in 2d data.
/// </summary>
public static void BuildLookUpTable(OpcPaths opcPaths, bool overrideExisting = false, IObserver <Tup <float, string> > progress = null, CancellationToken cancelToken = default(CancellationToken))
{
if (!overrideExisting && StorageConfig.FileExists(opcPaths.ProfileLutPath))
{
if (progress != null)
{
progress.OnNext(Tup.Create(1f, ""));
progress.OnCompleted();
}
Report.Line("LookUpTable already exists at {0}", opcPaths.ProfileLutPath);
}
// PatchHierarchyInfo
var info = PatchHierarchyInfo.BuildOrLoadCache(opcPaths);
info.PatchTree.CreatePatchPaths(opcPaths.PatchesSubDir);
// Level 0 Patches
var lvl0Patches =
info.RetrievePatchTreesOfLevel(0);
if (progress != null)
{
progress.OnNext(Tup.Create(.1f, ""));
}
// group by BB-2d: Min-X, Max-X
var patchesGroupedByBB = lvl0Patches
.GroupBy(patchTree => Tup.Create(patchTree.Info.GlobalBoundingBox2d.Min.X, patchTree.Info.GlobalBoundingBox2d.Max.X)).ToArray();
var entries = new List <ProfileLookUpTableEntry>();
#region Create ProfileLookUpTableEntries
for (int index = 0; index < patchesGroupedByBB.Count(); index++)
{
if (cancelToken.IsCancellationRequested)
{
if (progress != null)
{
progress.OnNext(Tup.Create(0f, "Building LookUpTabele cancelled."));
}
cancelToken.ThrowIfCancellationRequested();
}
//sort patches according to their b (sv_b_r) value
var patchesGroupedBySvBR = patchesGroupedByBB[index]
.OrderBy(k => k.Info.GlobalBoundingBox2d.Min.Y);
var fileHandleList = new List <PatchFileHandle>();
#region build PatchFileHandles
foreach (var patchTree in patchesGroupedBySvBR)
{
if (patchTree.Info.Positions2d.IsNullOrEmpty())
{
Report.Warn("ProfileLutCreation: Skipping Patchtree {0}, because of missing 2d positions.", patchTree.Id);
if (progress != null)
{
progress.OnNext(Tup.Create(0f, "ProfileLutCreation: Skipping Patchtree " + patchTree.Id + ", because of missing 2d positions."));
}
continue;
}
var pos2dPath = patchTree.GetPositionPath(PositionsType.V2dPositions);
//CAUTION absolute path needs to be repaired during loading
var file = AaraData.FromFile(pos2dPath);
file.SourceFileName = string.Empty;
fileHandleList.Add(new PatchFileHandle()
{
PatchTree = patchTree,
FileLoader = file,
});
}
#endregion
// Create ProfileLookupTableEntries
var firstPatchBB = patchesGroupedBySvBR.First().Info.GlobalBoundingBox2d;
entries.Add(new ProfileLookUpTableEntry()
{
Index = index,
SvRange = new Range1d(firstPatchBB.Min.X, firstPatchBB.Max.X),
FileHandles = fileHandleList,
});
var progressInc = 0.8f / patchesGroupedByBB.Count();
if (progress != null)
{
progress.OnNext(Tup.Create(progressInc, ""));
}
}
entries.Reverse();
#endregion
#region Save LUT
var lut = new ProfileLookUpTable()
{
SvRange = new Range1d(info.PatchTree.Info.GlobalBoundingBox2d.Min.X, info.PatchTree.Info.GlobalBoundingBox2d.Max.X),
Entries = entries,
AvgGeomtrySize = info.AvgGeometrySizes.First()
};
lut.Save(opcPaths.ProfileLutPath);
#endregion
if (progress != null)
{
progress.OnNext(Tup.Create(0.1f, ""));
progress.OnCompleted();
}
}
/// <summary>
/// Loads VertexGeometry from aara files. Beware: add Local2Global node for global space.
/// </summary>
/// <param name="positions">Raw positions, read from aara files for possible further processing.</param>
/// <param name="dataType">DataType of positions.</param>
/// <returns>Vertex Geometry in local OPC space.</returns>
public static VertexGeometry LoadPatch(PatchFileInfo info, string basePath, PositionsType posType, out Array positions, out Symbol dataType,
bool loadNormals = true, bool loadTexCoords = true, bool loadDiffTex = true, bool loadHueTex = true, float maxTriangleSize = float.PositiveInfinity, bool loadAsDoubles = false)
{
var vg = new VertexGeometry(GeometryMode.TriangleList);
positions = null;
// load metadata
var aara3dPos = AaraData.FromFile(
Path.Combine(basePath, posType == PositionsType.V3dPositions
? info.Positions : info.Positions2d));
dataType = aara3dPos.DataTypeAsSymbol;
var resolution = new V2i(aara3dPos.Size);
if (resolution.AnySmaller(2))
{
Report.Warn("ignoring patch {0} due to invalid gridresolution {1}", basePath, resolution);
return(null);
}
// load positions
positions = aara3dPos.LoadElements();
var positions3d = loadAsDoubles ? positions : AaraData.ConvertArrayToV3fs[aara3dPos.DataTypeAsSymbol](positions);
//var positionsV3 = loadAsDoubles ?
// (Array)AaraData.ConvertArrayToV3ds[aara3dPos.DataTypeAsSymbol](positions) :
// (Array);
vg.Positions = positions3d;
var p = AaraData.ConvertArrayToV3fs[aara3dPos.DataTypeAsSymbol](positions);
// calculate indices
var invalidPoints = OpcIndices.GetInvalidPositions(p);
// limit triangle size
if ((maxTriangleSize < float.PositiveInfinity) && (maxTriangleSize > 0.000001f))
{
vg.Indices = OpcIndices.ComputeIndexArray(resolution, invalidPoints.ToList(), p, maxTriangleSize);
}
else
{
vg.Indices = OpcIndices.ComputeIndexArray(resolution, invalidPoints.ToList());
}
// load normals
if (loadNormals)
{
var normalPath = Path.Combine(basePath, "Normals.aara");
if (StorageConfig.FileExists(normalPath))
{
var normals = AaraData.FromFile(normalPath);
var normals3d = AaraData.ConvertArrayToV3fs[normals.DataTypeAsSymbol](normals.LoadElements());
vg.Normals = normals3d;
}
}
// load coordinates
vg.Coordinates = new CoordinatesMap();
if (loadTexCoords)
{
var coordPath = Path.Combine(basePath, info.Coordinates.First());
var coordinates = AaraData.FromFile(coordPath).LoadElements() as V2f[];
vg.Coordinates[VertexGeometry.Property.DiffuseColorCoordinates] = coordinates;
}
// load textures
vg.Textures = new TexturesMap();
if (loadDiffTex)
{
var texFile = Path.ChangeExtension(info.Textures.First(), ".dds");
var texPath = Path.GetFullPath(Path.Combine(basePath, @"..\..\images", texFile));
if (StorageConfig.FileExists(texPath))
{
var img = Convertible.FromFile(texPath);
vg.Textures[VertexGeometry.Property.DiffuseColorTexture] =
new Aardvark.Rendering.Texture(img)
{
ForceImmediateUpload = false
};
}
}
if (loadHueTex)
{
vg.Textures[VertexGeometry.Property.LightMapTexture] =
new Aardvark.Rendering.Texture(Resources.HueColorMap.Convertible());
}
return(vg);
}
