public static ScalarField FromAnalyticalField(AnalyticalField func, Index size, Vector origin, Vector cellSize)
{
Debug.Assert(size.Length == origin.Length && size.Length == cellSize.Length);
RectlinearGrid grid = new RectlinearGrid(size);
ScalarField field = new ScalarField(grid);
for (int idx = 0; idx < size.Product(); ++idx)
{
// Compute the n-dimensional position.
int index = idx;
Index pos = new Index(0, size.Length);
pos[0] = index % size[0];
for (int dim = 1; dim < size.Length; ++dim)
{
index -= pos[dim - 1];
index /= size[dim - 1];
pos[dim] = index % size[dim];
}
Vector posV = origin + pos * cellSize;
field[idx] = func(posV);
}
return(field);
}
public virtual float Sample(ScalarField field, Vector position)
{
// Query relevant edges and their weights. Reault varies with different grid types.
int numCells = NumAdjacentPoints();
float[] weights;
int[] indices = FindAdjacentIndices(position, out weights);
Debug.Assert(indices.Length == weights.Length);
// Start with the first grid point.
float result = field[indices[0]];
if (result == field.InvalidValue)
{
return((float)field.InvalidValue);
}
result *= weights[0];
// Add the other weightes grid points.
for (int dim = 1; dim < indices.Length; ++dim)
{
if (field[indices[dim]] == field.InvalidValue)
{
return((float)field.InvalidValue);
}
result += weights[dim] * field[indices[dim]];
}
return(result);
}
/// <summary>
/// Class to define a slice to be loaded. Dimensions may be either included completely, or only one value is taken.
/// </summary>
//public partial class SliceRange
//{
// public SliceRange(LoaderNCF file, RedSea.Variable var) : base()
// {
// // Query number of dimensions of variable.
// int numDims;
// NetCDF.ResultCode ncState = NetCDF.nc_inq_varndims(file.GetID(), (int)var, out numDims);
// Debug.Assert(ncState == NetCDF.ResultCode.NC_NOERR);
// int[] dimIDs = new int[numDims];
// // Query relevant dimensions.
// ncState = NetCDF.nc_inq_vardimid(file.GetID(), (int)var, dimIDs);
// Debug.Assert(ncState == NetCDF.ResultCode.NC_NOERR);
// Initialize(dimIDs, var);
// }
//}
// public delegate string FilenameFromIndex(int index);
public static VectorFieldUnsteady LoadTimeSeries(SliceRange[] vars, int starttime, int timelength)
{
ScalarField[][] slices = new ScalarField[vars.Length][];
for (int var = 0; var < vars.Length; ++var)
{
slices[var] = new ScalarField[timelength];
}
LoaderNCF ncFile;
for (int time = 0; time < timelength; ++time)
{
ncFile = RedSea.Singleton.GetLoaderNCF(time + starttime);// path + (time + 1) + filename);
for (int var = 0; var < vars.Length; ++var)
{
slices[var][time] = ncFile.LoadFieldSlice(vars[var]);
}
ncFile.Close();
}
ScalarFieldUnsteady[] scalars = new ScalarFieldUnsteady[vars.Length];
for (int var = 0; var < vars.Length; ++var)
{
scalars[var] = new ScalarFieldUnsteady(slices[var], starttime);
}
return(new VectorFieldUnsteady(scalars));
}
protected void LoadNextField()
{
// Keep t1 timestep as new t0. Update mapping on device side.
_t0X = _t1X;
new CudaTextureArray2D(_advectParticlesKernel, "vX_t0", CUAddressMode.Wrap, CUFilterMode.Linear, CUTexRefSetFlags.None, _t0X);
_t0Y = _t1Y;
new CudaTextureArray2D(_advectParticlesKernel, "vY_t0", CUAddressMode.Wrap, CUFilterMode.Linear, CUTexRefSetFlags.None, _t0Y);
CurrentTime++;
// Load new t1.
LoaderNCF ncFile = RedSea.Singleton.GetLoaderNCF(CurrentTime);
ScalarField t1X = ncFile.LoadFieldSlice(_ensembleRanges[0]);
ScalarField t1Y = ncFile.LoadFieldSlice(_ensembleRanges[1]);
ncFile.Close();
// All members are above each other.
int vHeight = _height * _numMembers;
// vX, t=1
_t1X = new CudaArray2D(CUArrayFormat.Float, _width, vHeight, CudaArray2DNumChannels.One);
_t1X.CopyFromHostToThis(t1X.Data);
new CudaTextureArray2D(_advectParticlesKernel, "vX_t1", CUAddressMode.Wrap, CUFilterMode.Linear, CUTexRefSetFlags.None, _t1X);
// vY, t=1
_t1Y = new CudaArray2D(CUArrayFormat.Float, _width, vHeight, CudaArray2DNumChannels.One);
_t1Y.CopyFromHostToThis(t1Y.Data);
new CudaTextureArray2D(_advectParticlesKernel, "vY_t1", CUAddressMode.Wrap, CUFilterMode.Linear, CUTexRefSetFlags.None, _t1Y);
}
public ScalarFieldUnsteady(ScalarField[] fields, float timeStart, float timeStep = 1.0f)
: base()
{
_slices = fields;
_sliceGrid = fields[0].Grid.GetAsTimeGrid(fields.Length, timeStart, timeStep);
//for (int slice = 0; slice < _slices.Length; ++slice)
//{
// _slices[slice].TimeOrigin = timeStart + timeStep * slice;
//}
}
public ScalarFieldUnsteady(ScalarField[] fields)
: base()
{
_slices = fields;
Grid = fields[0].Grid.GetAsTimeGrid(fields.Length, fields[0].TimeOrigin??0, 1.0f);
//for (int slice = 0; slice < _slices.Length; ++slice)
//{
// _slices[slice].TimeOrigin = (fields[0].TimeOrigin??0) + slice;
//}
}
public VectorFieldUnsteady(VectorFieldUnsteady field, VFJFunction function, int outputDim)
{
int scalars = outputDim;
FieldGrid gridCopy = field._scalarsUnsteady[0].TimeSlices[0].Grid.Copy();
_scalarsUnsteady = new ScalarFieldUnsteady[outputDim];
// Reserve the space.
for (int comp = 0; comp < outputDim; ++comp)
{
ScalarField[] fields = new ScalarField[field.Size.T]; //(field.Grid);
for (int t = 0; t < field.Size.T; ++t)
{
fields[t] = new ScalarField(gridCopy);
}
_scalarsUnsteady[comp] = new ScalarFieldUnsteady(fields);
_scalarsUnsteady[comp].TimeOrigin = field[0].TimeOrigin ?? 0;
_scalarsUnsteady[comp].InvalidValue = field.InvalidValue;
_scalarsUnsteady[comp].DoNotScale();
}
this.InvalidValue = field.InvalidValue;
this.TimeOrigin = field.TimeOrigin;
Grid = field.Grid.Copy();
// Since the time component is in the grid size as well, we do not need to account for time specially.
GridIndex indexIterator = new GridIndex(field.Size);
foreach (GridIndex index in indexIterator)
{
Vector v = field.Sample((int)index);
if (v[0] == InvalidValue)
{
for (int dim = 0; dim < Scalars.Length; ++dim)
{
_scalarsUnsteady[dim][(int)index] = (float)InvalidValue;
}
continue;
}
SquareMatrix J = field.SampleDerivative(index);
Vector funcValue = function(v, J);
for (int dim = 0; dim < Scalars.Length; ++dim)
{
Scalars[dim][(int)index] = funcValue[dim];
}
}
}
/// <summary>
/// Add one field given as texture.
/// </summary>
/// <param name="field"></param>
public void AddScalar(ScalarField field)
{
ShaderResourceView[] cpy = _fieldTextures;
_fieldTextures = new ShaderResourceView[_fieldTextures.Length + 1];
Array.Copy(cpy, _fieldTextures, cpy.Length);
Texture2D tex = ColorMapping.GenerateTextureFromField(_device, field);
_fieldTextures[cpy.Length] = new ShaderResourceView(_device, tex);
SetRenderEffect(Effect);
}
public static VectorField GetRingField(int numCells)
{
ScalarField[] fields = new ScalarField[2];
Index size = new Index(numCells + 1, 2);
Vector origin = new Vector(-2, 2);
Vector cell = new Vector(4.0f / numCells, 2);
fields[0] = ScalarField.FromAnalyticalField(RingFieldX, size, origin, cell);
fields[1] = ScalarField.FromAnalyticalField(RingFieldY, size, origin, cell);
return(new VectorField(fields));
}
public VectorField GetTimeSlice(int slice)
{
ScalarField[] slices = new ScalarField[Scalars.Length];
for (int scalar = 0; scalar < Scalars.Length; ++scalar)
{
slices[scalar] = _scalarsUnsteady[scalar].GetTimeSlice(slice);
}
var result = new VectorField(slices);
result.TimeSlice = slice;
result.InvalidValue = InvalidValue;
return(result);
}
public static VectorFieldUnsteady CreatePathlineSpiral(int numCells, int numSlices, float domainR = 2)
{
Vector origin = new Vec2(-domainR);
Vector cell = new Vec2(2 * domainR / numCells);
Index size = new Index(numCells + 1, 2);
ScalarField[] vX = new ScalarField[numSlices];
ScalarField[] vY = new ScalarField[numSlices];
for (int slice = 0; slice < numSlices; ++slice)
{
vX[slice] = ScalarField.FromAnalyticalField(x => (float)Math.Cos((float)slice / 3) * 4, size, origin, cell);
vY[slice] = ScalarField.FromAnalyticalField(x => (float)Math.Sin((float)slice / 3) * 4, size, origin, cell);
}
return(new VectorFieldUnsteady(new ScalarFieldUnsteady[] { new ScalarFieldUnsteady(vX), new ScalarFieldUnsteady(vY) }));
}
public static ScalarFieldUnsteady LoadTimeSeries(SliceRange var, int starttime, int timelength)
{
ScalarField[] slices = new ScalarField[timelength];
LoaderNCF ncFile;
for (int time = starttime; time < starttime + timelength; ++time)
{
ncFile = RedSea.Singleton.GetLoaderNCF(time);// path + (time + 1) + filename);
slices[time] = ncFile.LoadFieldSlice(var);
ncFile.Close();
}
return(new ScalarFieldUnsteady(slices, starttime));
}
public static void TestCP()
{
Random rnd = new Random(DateTime.Today.Millisecond);
RectlinearGrid grid = new RectlinearGrid(new Index(2, 2));
ScalarField cell0 = new ScalarField(grid);
ScalarField cell1 = new ScalarField(grid);
for (int tests = 0; tests < 100; ++tests)
{
for (int i = 0; i < 4; ++i)
{
cell0.Data[i] = (float)rnd.NextDouble() - 0.5f;
cell1.Data[i] = (float)rnd.NextDouble() - 0.5f;
}
VectorField cell = new VectorField(new ScalarField[] { cell0, cell1 });
//PointSet<Point> points = FieldAnalysis.ComputeCriticalPointsRegularAnalytical2D(cell);
}
}
public override VectorField GetSlicePlanarVelocity(int timeSlice)
{
ScalarField[] slices = new ScalarField[Size.Length - 1];
// Copy the grid - one dimension smaller!
RectlinearGrid grid = Grid as RectlinearGrid;
Index newSize = new Index(Size.Length - 1);
Array.Copy(Size.Data, newSize.Data, newSize.Length);
FieldGrid sliceGrid = new RectlinearGrid(newSize);
for (int i = 0; i < Size.Length - 1; ++i)
{
slices[i] = this._scalarsUnsteady[i].GetTimeSlice(timeSlice);
slices[i].TimeOrigin = timeSlice;
}
return(new VectorField(slices));
}
public static VectorFieldUnsteady CreateBowl(Vec2 center, int numCells, Vec2 dir, int numSlices, float domainR = 2)
{
Vector origin = center - new Vec2(domainR);
Vector cell = new Vec2(2 * domainR / numCells);
Index size = new Index(numCells + 1, 2);
ScalarField[] vX = new ScalarField[numSlices];
ScalarField[] vY = new ScalarField[numSlices];
for (int slice = 0; slice < numSlices; ++slice)
{
vX[slice] = ScalarField.FromAnalyticalField(BowlX, size, origin + dir * slice, cell);
vY[slice] = ScalarField.FromAnalyticalField(BowlY, size, origin + dir * slice, cell);
}
VectorFieldUnsteady field = new VectorFieldUnsteady(new ScalarFieldUnsteady[] { new ScalarFieldUnsteady(vX), new ScalarFieldUnsteady(vY) });
field.InvalidValue = float.MaxValue;
field.DoNotScale();
return field;
}
public virtual VectorField GetSlicePlanarVelocity(int posInLastDimension)
{
ScalarField[] slices = new ScalarField[Size.Length - 1];
// Copy the grid - one dimension smaller!
RectlinearGrid grid = Grid as RectlinearGrid;
Index newSize = new Index(Size.Length - 1);
Array.Copy(Size.Data, newSize.Data, newSize.Length);
FieldGrid sliceGrid = new RectlinearGrid(newSize);
for (int i = 0; i < Size.Length - 1; ++i)
{
slices[i] = new ScalarField(sliceGrid);
Array.Copy(((ScalarField)this.Scalars[i]).Data, newSize.Product() * posInLastDimension, slices[i].Data, 0, newSize.Product());
slices[i].TimeOrigin = posInLastDimension;
}
return(new VectorField(slices));
}
public VectorField(VectorField field, VFJFunction function, int outputDim, bool needJacobian = true)
{
int scalars = outputDim;/*function(field.Sample(0), field.SampleDerivative(new Vector(0, field.Size.Length))).Length;*/
_scalars = new ScalarField[scalars];
FieldGrid gridCopy = field.Grid.Copy();
// In case the input field was time dependant, this one is not. Still, we keep the size and origin of the time as new dimension!
gridCopy.TimeDependant = false;
for (int dim = 0; dim < scalars; ++dim)
{
Scalars[dim] = new ScalarField(gridCopy);
}
this.InvalidValue = field.InvalidValue;
GridIndex indexIterator = new GridIndex(field.Size);
foreach (GridIndex index in indexIterator)
{
Vector v = field.Sample((int)index);
if (v[0] == InvalidValue)
{
for (int dim = 0; dim < Scalars.Length; ++dim)
{
Scalars[dim][(int)index] = (float)InvalidValue;
}
continue;
}
SquareMatrix J = needJacobian? field.SampleDerivative(index) : null;
Vector funcValue = function(v, J);
for (int dim = 0; dim < Scalars.Length; ++dim)
{
var vec = Scalars[dim];
Scalars[dim][(int)index] = funcValue[dim];
}
}
}
public static VectorFieldUnsteady CreatePerfect(Vec2 center, int numCells, Vec2 dir, int numSlices, float domainR = 2)
{
Vector origin = center - new Vec2(domainR);
Vector cell = new Vec2(2 * domainR / numCells);
Index size = new Index(numCells + 1, 2);
ScalarField[] vX = new ScalarField[numSlices];
ScalarField[] vY = new ScalarField[numSlices];
for (int slice = 0; slice < numSlices; ++slice)
{
vX[slice] = ScalarField.FromAnalyticalField(PerfX, size, origin + dir * slice, cell);
vY[slice] = ScalarField.FromAnalyticalField(PerfY, size, origin + dir * slice, cell);
}
VectorFieldUnsteady field = new VectorFieldUnsteady(new ScalarFieldUnsteady[] { new ScalarFieldUnsteady(vX), new ScalarFieldUnsteady(vY) });
field.InvalidValue = float.MaxValue;
field.DoNotScale();
return(field);
}
protected void LoadNextField()
{
// Keep t1 timestep as new t0. Update mapping on device side.
var tmp = _t0X;
_t0X = _t1X;
_t1X = tmp;
new CudaTextureArray2D(_advectParticlesKernel, "vX_t0", CUAddressMode.Wrap, CUFilterMode.Linear, CUTexRefSetFlags.None, _t0X);
tmp = _t0X;
_t0Y = _t1Y;
_t1Y = tmp;
new CudaTextureArray2D(_advectParticlesKernel, "vY_t0", CUAddressMode.Wrap, CUFilterMode.Linear, CUTexRefSetFlags.None, _t0Y);
CurrentTime++;
// Load new t1.
LoaderNCF ncFile = RedSea.Singleton.GetLoaderNCF(CurrentTime);
ScalarField t1X = ncFile.LoadFieldSlice(_ensembleRanges[0]);
ScalarField t1Y = ncFile.LoadFieldSlice(_ensembleRanges[1]);
ncFile.Close();
// All members are above each other.
int vHeight = _height * _numMembers;
float[] paddedArray = new float[_t1X.Width * _t1X.Height];
Array.Copy(t1X.Data, paddedArray, t1X.Data.Length);
// vX, t=1
_t1X.CopyFromHostToThis <float>(paddedArray);
new CudaTextureArray2D(_advectParticlesKernel, "vX_t1", CUAddressMode.Wrap, CUFilterMode.Linear, CUTexRefSetFlags.None, _t1X);
Array.Copy(t1Y.Data, paddedArray, t1Y.Data.Length);
// vY, t=1
_t1Y.CopyFromHostToThis <float>(paddedArray);
new CudaTextureArray2D(_advectParticlesKernel, "vY_t1", CUAddressMode.Wrap, CUFilterMode.Linear, CUTexRefSetFlags.None, _t1Y);
}
public ScalarField(ScalarField field, SGFunction function, bool needJ = true)
{
_data = new float[field.Size.Product()];
Grid = field.Grid;
this.InvalidValue = field.InvalidValue;
GridIndex indexIterator = new GridIndex(field.Size);
foreach (GridIndex index in indexIterator)
{
float s = field[(int)index];
if (s == InvalidValue)
{
this[(int)index] = (float)InvalidValue;
}
else
{
Vector g = needJ ? field.SampleDerivative(index) : new Vec2(0, 0);
this[(int)index] = function(s, g);
}
}
}
public static ScalarField FromAnalyticalField(AnalyticalField func, Index size, Vector origin, Vector cellSize)
{
Debug.Assert(size.Length == origin.Length && size.Length == cellSize.Length);
RectlinearGrid grid = new RectlinearGrid(size);
ScalarField field = new ScalarField(grid);
for(int idx = 0; idx < size.Product(); ++idx)
{
// Compute the n-dimensional position.
int index = idx;
Index pos = new Index(0, size.Length);
pos[0] = index % size[0];
for(int dim = 1; dim < size.Length; ++dim)
{
index -= pos[dim - 1];
index /= size[dim - 1];
pos[dim] = index % size[dim];
}
Vector posV = origin + pos * cellSize;
field[idx] = func(posV);
}
return field;
}
public VectorFieldUnsteady(VectorFieldUnsteady field, VFJFunction function, int outputDim)
{
int scalars = outputDim;
FieldGrid gridCopy = field._scalarsUnsteady[0].TimeSlices[0].Grid.Copy();
_scalarsUnsteady = new ScalarFieldUnsteady[outputDim];
// Reserve the space.
for (int comp = 0; comp < outputDim; ++comp)
{
ScalarField[] fields = new ScalarField[field.Size.T]; //(field.Grid);
for (int t = 0; t < field.Size.T; ++t)
{
fields[t] = new ScalarField(gridCopy);
}
_scalarsUnsteady[comp] = new ScalarFieldUnsteady(fields);
_scalarsUnsteady[comp].TimeOrigin = field[0].TimeOrigin ?? 0;
_scalarsUnsteady[comp].InvalidValue = field.InvalidValue;
_scalarsUnsteady[comp].DoNotScale();
}
this.InvalidValue = field.InvalidValue;
this.TimeOrigin = field.TimeOrigin;
Grid = field.Grid.Copy();
// Since the time component is in the grid size as well, we do not need to account for time specially.
GridIndex indexIterator = new GridIndex(field.Size);
foreach (GridIndex index in indexIterator)
{
Vector v = field.Sample((int)index);
if (v[0] == InvalidValue)
{
for (int dim = 0; dim < Scalars.Length; ++dim)
_scalarsUnsteady[dim][(int)index] = (float)InvalidValue;
continue;
}
SquareMatrix J = field.SampleDerivative(index);
Vector funcValue = function(v, J);
for (int dim = 0; dim < Scalars.Length; ++dim)
{
Scalars[dim][(int)index] = funcValue[dim];
}
}
}
/// <summary>
/// Load a slice from the file.
/// </summary>
/// <param name="slice">Carries variable to load, dimensions in file and what to load.</param>
/// <returns></returns>
public override ScalarFieldUnsteady LoadTimeSlices(SliceRange slice, int starttime = -1, int timelength = -1)
{
Index offsets = new Index(slice.GetOffsets());
int spaceDims = 4;
int[] sizeInFile = slice.GetLengths();
Debug.Assert(starttime == -1 && timelength == -1, "Ignoring those parameters. Plase specify in the SliceRange instance!");
// Probably has less dimensions.
int[] sizeField = new int[spaceDims];
int numDimsField = 0;
// Exclude time dimension. It will be treated differently.
for (int dim = 0; dim < offsets.Length; ++dim)
{
if (offsets[dim] != -1 && sizeInFile[dim] > 1)
{
sizeField[numDimsField++] = sizeInFile[dim];
}
// Include whole dimension.
else if (offsets[dim] == -1)
{
// Fill size.
sizeInFile[dim] = _dimLengths[dim];
// Set offset to one. offset = 0, size = size of dimension.
offsets[dim] = 0;
// Save size in size-vector for the scalar field.
sizeField[numDimsField++] = sizeInFile[dim];
}
}
int numSpaceDims = ((sizeInFile[0] > 1) ? 1 : 0) + ((sizeInFile[1] > 1) ? 1 : 0) + ((sizeInFile[2] > 1) ? 1 : 0);
Index fieldSize = new Index(numSpaceDims);
Array.Copy(sizeField, fieldSize.Data, fieldSize.Length);
Debug.Assert(sizeInFile[3] == 1, "How should I load several members into one data block???");
// Create a grid descriptor for the field.
// TODO: Actually load this data.
RectlinearGrid grid = new RectlinearGrid(fieldSize);
// Create scalar field instance and fill it with data.
int sliceSize = grid.Size.Product();
// For each time and subtime step, run through them.
ScalarField[] fields = new ScalarField[sizeInFile[4] * sizeInFile[5]];
int indexTime = 0;
for (int time = 0; time < sizeInFile[spaceDims]; ++time)
{
for (int subtime = 0; subtime < sizeInFile[spaceDims + 1]; ++subtime)
{
// Now, load one single file.
string filename = RedSea.Singleton.GetFilename(offsets[spaceDims] + time, offsets[spaceDims + 1] + subtime, offsets[3], slice.GetVariable());
using (FileStream fs = File.Open(@filename, FileMode.Open))
{
// Read in the data you need.
using (BinaryReader reader = new BinaryReader(fs))
{
// Read in all floats.
Debug.Assert(reader.BaseStream.Length >= sliceSize * sizeof(float));
fields[indexTime] = new ScalarField(grid);
int indexSpace = 0;
for (int z = offsets[2]; z < offsets[2] + sizeInFile[2]; ++z)
{
// Set file reader position to right start point.
reader.BaseStream.Seek(z * _dimLengths[0] * _dimLengths[1] + offsets[1] * _dimLengths[0] + offsets[0], SeekOrigin.Begin);
for (int y = offsets[1]; y < offsets[1] + sizeInFile[1]; ++y)
{
for (int x = offsets[0]; x < offsets[0] + sizeInFile[0]; ++x)
{
fields[indexTime][indexSpace++] = reader.ReadSingle();
}
// Advance one line.
reader.BaseStream.Seek((_dimLengths[0] - sizeInFile[0]) * sizeof(float), SeekOrigin.Current);
}
}
}
}
// Change Endian of data.
if (!Range.CorrectEndian)
{
fields[indexTime].ChangeEndian();
for (int i = 0; i < fields[indexTime].Data.Length; ++i)
{
if (fields[indexTime].Data[i] == 0)
fields[indexTime].Data[i] = float.MaxValue;
}
fields[indexTime].InvalidValue = float.MaxValue;
}
// Go on to next file.
indexTime++;
}
}
return new ScalarFieldUnsteady(fields, offsets[spaceDims] * _dimLengths[spaceDims+1] + offsets[spaceDims+1]);
}
public List<Renderable> ShowPaths()
{
bool mapLines = false;
// Setup an integrator.
VectorField.Integrator intVF = VectorField.Integrator.CreateIntegrator(Velocity, _currentSetting.IntegrationType);
intVF.MaxNumSteps = 10000;
intVF.StepSize = _currentSetting.StepSize;
if (_lastSetting == null ||
IntegrationTypeChanged ||
StepSizeChanged)
{
// ~~~~~~~~~~~ Line Integration ~~~~~~~~~~~ \\
// Clear the raw lines.
int timeLength = Velocity.Size.T;
_rawLines = new LineSet[Velocity.Size.T];
// Initialize the firth
_rawLines[0] = new LineSet(new Line[0]);
ScalarField[] lengths = new ScalarField[timeLength];
lengths[0] = new ScalarField(Velocity.ScalarsAsSFU[0].TimeSlices[0], (v, J) => 0);
_minLength = new float[timeLength];
_maxLength = new float[timeLength];
// Integrate the path line segments between each neighboring pair of time slices.
for (int time = 1; time < timeLength; ++time)
{
_minLength[time] = float.MaxValue;
_maxLength[time] = float.MinValue;
// Integrate last points until next time slice.
_pathlineSegments[time-1] = intVF.Integrate(_intersectTimeSlices[time - 1], false, time)[0];
_pathlineSegments[time - 1].Color = Vector3.UnitZ * (float)time / timeLength;
// if(time == timeLength - 1)
_intersectTimeSlices[time] = _pathlineSegments[time - 1].GetValidEndPoints();//VectorField.Integrator.Status.BORDER);
//else
// _intersectTimeSlices[time] = _pathlineSegments[time - 1].GetEndPoints(VectorField.Integrator.Status.TIME_BORDER);
_points[time] = new PointCloud(Plane, _intersectTimeSlices[time].ToBasicSet());
// Set all positions to 0, or invalid value.
lengths[time] = new ScalarField(lengths[time-1], (s, g) => s, false);
int i = 0;
for (int p = 0; p < _intersectTimeSlices[time].Points.Length; ++p)
{
EndPoint pP = _intersectTimeSlices[time].Points[p];
++i;
// Map floating position to int position.
int iPos = _fieldPositionOfValidCell[p];
float timeStepped = (pP.Position.Z - (time-1));
lengths[time][iPos] += timeStepped > 0 ? pP.LengthLine / timeStepped : 0;
float tmp = lengths[time][iPos];
_minLength[time] = Math.Min(lengths[time][iPos], _minLength[time]);
_maxLength[time] = Math.Max(lengths[time][iPos], _maxLength[time]);
if (_minLength[time] < 0 || pP.Status != VectorField.Integrator.Status.TIME_BORDER)
i += 0;
//Console.WriteLine(lengths[time][iPos]);
}
Console.WriteLine("Integrated lines until time " + time);
}
lengths[0] = new VectorField(Velocity.GetTimeSlice(0), FieldAnalysis.VFLength, 1, false).Scalars[0] as ScalarField;
_minLength[0] = 0;
_maxLength[0] = RedSea.Singleton.NumTimeSlices;
_pathLengths = new ScalarFieldUnsteady(lengths);
mapLines = true;
}
if (_lastSetting == null ||
SliceTimeMainChanged||
ShaderChanged)
{
ScalarField f = _pathLengths.GetTimeSlice(_currentSetting.SliceTimeMain);
f.TimeOrigin = 0;
VectorField vecField;
switch(_currentSetting.Shader)
{
case FieldPlane.RenderEffect.LIC:
VectorField slice = Velocity.GetTimeSlice(0);
slice.TimeSlice = 0;
vecField = new VectorField(new Field[] { slice.Scalars[0], slice.Scalars[1], f });
break;
case FieldPlane.RenderEffect.LIC_LENGTH:
vecField = Velocity.GetTimeSlice(_currentSetting.SliceTimeMain);
vecField.TimeSlice = 0;
break;
default:
case FieldPlane.RenderEffect.COLORMAP:
case FieldPlane.RenderEffect.DEFAULT:
vecField = new VectorField(new Field[] { f });
break;
}
_plane = new FieldPlane(Plane, vecField /*Velocity.GetSlice(_currentSetting.SliceTimeReference)*/, _currentSetting.Shader);
}
// The line settings have changed. Create new renderables from the lines.
if (mapLines || LineSettingChanged)
{
_lines = new Renderable[_pathlineSegments.Length];
switch (_currentSetting.LineSetting)
{
// Map the vertices to colored points.
case RedSea.DisplayLines.POINTS_2D_LENGTH:
for (int i = 0; i < _pathlineSegments.Length; ++i)
{
PointSet<Point> linePoints = Velocity.ColorCodeArbitrary(_pathlineSegments[i], RedSea.DisplayLineFunctions[(int)_currentSetting.LineSetting]);
_lines[i] = new PointCloud(Plane, linePoints);
}
break;
// Render as line.
default:
case RedSea.DisplayLines.LINE:
for (int i = 0; i < _pathlineSegments.Length; ++i)
{
_lines[i] = new LineBall(Plane, _pathlineSegments[i]);
}
break;
}
}
// Set mapping values.
//_plane.UpperBound = 0; //= (1 + _currentSetting.WindowWidth) * (_maxLength[_currentSetting.SliceTimeMain] - _minLength[_currentSetting.SliceTimeMain]) /2 + _minLength[_currentSetting.SliceTimeMain];
_plane.UpperBound = _currentSetting.WindowWidth + _currentSetting.WindowStart; ///= _currentSetting.SliceTimeMain;
//_plane.LowerBound = 0; //= (1 - _currentSetting.WindowWidth) * (_maxLength[_currentSetting.SliceTimeMain] - _minLength[_currentSetting.SliceTimeMain]) /2 + _minLength[_currentSetting.SliceTimeMain];
_plane.LowerBound = _currentSetting.WindowStart; ///= _currentSetting.SliceTimeMain;
_plane.UsedMap = _currentSetting.Colormap;
_plane.SetRenderEffect(_currentSetting.Shader);
List<Renderable> result = new List<Renderable>(50);
result.Add(_plane);
switch(_currentSetting.Tracking)
{
case RedSea.DisplayTracking.LINE:
case RedSea.DisplayTracking.LINE_POINTS:
Renderable[] lines = new Renderable[_currentSetting.SliceTimeMain];
Array.Copy(_lines, lines, _currentSetting.SliceTimeMain);
result = result.Concat(lines).ToList();
break;
case RedSea.DisplayTracking.POINTS:
result.Add(_points[_currentSetting.SliceTimeMain]);
break;
case RedSea.DisplayTracking.LINE_SELECTION:
VectorField.StreamLine<Vector3> line = intVF.IntegrateLineForRendering(new Vec3(_startPoint.X, _startPoint.Y, 0));
LineSet set = new LineSet(new Line[] { new Line() { Positions = line.Points.ToArray() } });
if(_currentSetting.Flat)
set.FlattenLines(_currentSetting.SliceTimeMain);
result.Add(new LineBall(Plane, set));
break;
default:
break;
}
return result;
}
public List <Renderable> ShowPaths()
{
bool mapLines = false;
// Setup an integrator.
VectorField.Integrator intVF = VectorField.Integrator.CreateIntegrator(Velocity, _currentSetting.IntegrationType);
intVF.MaxNumSteps = 10000;
intVF.StepSize = _currentSetting.StepSize;
if (_lastSetting == null ||
IntegrationTypeChanged ||
StepSizeChanged)
{
// ~~~~~~~~~~~ Line Integration ~~~~~~~~~~~ \\
// Clear the raw lines.
int timeLength = Velocity.Size.T;
_rawLines = new LineSet[Velocity.Size.T];
// Initialize the firth
_rawLines[0] = new LineSet(new Line[0]);
ScalarField[] lengths = new ScalarField[timeLength];
lengths[0] = new ScalarField(Velocity.ScalarsAsSFU[0].TimeSlices[0], (v, J) => 0);
_minLength = new float[timeLength];
_maxLength = new float[timeLength];
// Integrate the path line segments between each neighboring pair of time slices.
for (int time = 1; time < timeLength; ++time)
{
_minLength[time] = float.MaxValue;
_maxLength[time] = float.MinValue;
// Integrate last points until next time slice.
_pathlineSegments[time - 1] = intVF.Integrate(_intersectTimeSlices[time - 1], false, time)[0];
_pathlineSegments[time - 1].Color = Vector3.UnitZ * (float)time / timeLength;
// if(time == timeLength - 1)
_intersectTimeSlices[time] = _pathlineSegments[time - 1].GetValidEndPoints();//VectorField.Integrator.Status.BORDER);
//else
// _intersectTimeSlices[time] = _pathlineSegments[time - 1].GetEndPoints(VectorField.Integrator.Status.TIME_BORDER);
_points[time] = new PointCloud(Plane, _intersectTimeSlices[time].ToBasicSet());
// Set all positions to 0, or invalid value.
lengths[time] = new ScalarField(lengths[time - 1], (s, g) => s, false);
int i = 0;
for (int p = 0; p < _intersectTimeSlices[time].Points.Length; ++p)
{
EndPoint pP = _intersectTimeSlices[time].Points[p];
++i;
// Map floating position to int position.
int iPos = _fieldPositionOfValidCell[p];
float timeStepped = (pP.Position.Z - (time - 1));
lengths[time][iPos] += timeStepped > 0 ? pP.LengthLine / timeStepped : 0;
float tmp = lengths[time][iPos];
_minLength[time] = Math.Min(lengths[time][iPos], _minLength[time]);
_maxLength[time] = Math.Max(lengths[time][iPos], _maxLength[time]);
if (_minLength[time] < 0 || pP.Status != VectorField.Integrator.Status.TIME_BORDER)
{
i += 0;
}
//Console.WriteLine(lengths[time][iPos]);
}
Console.WriteLine("Integrated lines until time " + time);
}
lengths[0] = new VectorField(Velocity.GetTimeSlice(0), FieldAnalysis.VFLength, 1, false).Scalars[0] as ScalarField;
_minLength[0] = 0;
_maxLength[0] = RedSea.Singleton.NumTimeSlices;
_pathLengths = new ScalarFieldUnsteady(lengths);
mapLines = true;
}
if (_lastSetting == null ||
SliceTimeMainChanged ||
ShaderChanged)
{
ScalarField f = _pathLengths.GetTimeSlice(_currentSetting.SliceTimeMain);
f.TimeOrigin = 0;
VectorField vecField;
switch (_currentSetting.Shader)
{
case FieldPlane.RenderEffect.LIC:
VectorField slice = Velocity.GetTimeSlice(0);
slice.TimeSlice = 0;
vecField = new VectorField(new Field[] { slice.Scalars[0], slice.Scalars[1], f });
break;
case FieldPlane.RenderEffect.LIC_LENGTH:
vecField = Velocity.GetTimeSlice(_currentSetting.SliceTimeMain);
vecField.TimeSlice = 0;
break;
default:
case FieldPlane.RenderEffect.COLORMAP:
case FieldPlane.RenderEffect.DEFAULT:
vecField = new VectorField(new Field[] { f });
break;
}
_plane = new FieldPlane(Plane, vecField /*Velocity.GetSlice(_currentSetting.SliceTimeReference)*/, _currentSetting.Shader);
}
// The line settings have changed. Create new renderables from the lines.
if (mapLines || LineSettingChanged)
{
_lines = new Renderable[_pathlineSegments.Length];
switch (_currentSetting.LineSetting)
{
// Map the vertices to colored points.
case RedSea.DisplayLines.POINTS_2D_LENGTH:
for (int i = 0; i < _pathlineSegments.Length; ++i)
{
PointSet <Point> linePoints = Velocity.ColorCodeArbitrary(_pathlineSegments[i], RedSea.DisplayLineFunctions[(int)_currentSetting.LineSetting]);
_lines[i] = new PointCloud(Plane, linePoints);
}
break;
// Render as line.
default:
case RedSea.DisplayLines.LINE:
for (int i = 0; i < _pathlineSegments.Length; ++i)
{
_lines[i] = new LineBall(Plane, _pathlineSegments[i]);
}
break;
}
}
// Set mapping values.
//_plane.UpperBound = 0; //= (1 + _currentSetting.WindowWidth) * (_maxLength[_currentSetting.SliceTimeMain] - _minLength[_currentSetting.SliceTimeMain]) /2 + _minLength[_currentSetting.SliceTimeMain];
_plane.UpperBound = _currentSetting.WindowWidth + _currentSetting.WindowStart; ///= _currentSetting.SliceTimeMain;
//_plane.LowerBound = 0; //= (1 - _currentSetting.WindowWidth) * (_maxLength[_currentSetting.SliceTimeMain] - _minLength[_currentSetting.SliceTimeMain]) /2 + _minLength[_currentSetting.SliceTimeMain];
_plane.LowerBound = _currentSetting.WindowStart; ///= _currentSetting.SliceTimeMain;
_plane.UsedMap = _currentSetting.Colormap;
_plane.SetRenderEffect(_currentSetting.Shader);
List <Renderable> result = new List <Renderable>(50);
result.Add(_plane);
switch (_currentSetting.Tracking)
{
case RedSea.DisplayTracking.LINE:
case RedSea.DisplayTracking.LINE_POINTS:
Renderable[] lines = new Renderable[_currentSetting.SliceTimeMain];
Array.Copy(_lines, lines, _currentSetting.SliceTimeMain);
result = result.Concat(lines).ToList();
break;
case RedSea.DisplayTracking.POINTS:
result.Add(_points[_currentSetting.SliceTimeMain]);
break;
case RedSea.DisplayTracking.LINE_SELECTION:
VectorField.StreamLine <Vector3> line = intVF.IntegrateLineForRendering(new Vec3(_startPoint.X, _startPoint.Y, 0));
LineSet set = new LineSet(new Line[] { new Line()
{
Positions = line.Points.ToArray()
} });
if (_currentSetting.Flat)
{
set.FlattenLines(_currentSetting.SliceTimeMain);
}
result.Add(new LineBall(Plane, set));
break;
default:
break;
}
return(result);
}
/// <summary>
/// Load a slice from the file.
/// </summary>
/// <param name="slice">Carries variable to load, dimensions in file and what to load.</param>
/// <returns></returns>
public override ScalarField LoadFieldSlice(SliceRange slice)
{
ScalarField field;
Index offsets = new Index(slice.GetOffsets());
NetCDF.ResultCode ncState = NetCDF.ResultCode.NC_NOERR;
//int[] sizeInFile = new int[offsets.Length];
int[] sizeInFile = slice.GetLengths();
// Probably has less dimensions.
int[] sizeField = new int[offsets.Length];
int numDimsField = 0;
//int currDimSlice = 0;
for (int dim = 0; dim < offsets.Length; ++dim)
{
if (offsets[dim] != -1 && sizeInFile[dim] > 1)
{
sizeField[numDimsField++] = sizeInFile[dim];
}
// Include whole dimension.
else if (offsets[dim] == -1)
{
// Fill size.
int sizeDim;
ncState = NetCDF.nc_inq_dimlen(_fileID, slice.GetDimensionID(dim), out sizeDim);
Debug.Assert(ncState == NetCDF.ResultCode.NC_NOERR);
sizeInFile[dim] = sizeDim;
// Set offset to one. offset = 0, size = size of dimension.
offsets[dim] = 0;
// Save size in size-vector for the scalar field.
sizeField[numDimsField++] = sizeDim;
}
}
//if (slice.IsTimeDependent())
// numDimsField++;
// Generate size index for field class.
Index fieldSize = new Index(numDimsField);
Array.Copy(sizeField, fieldSize.Data, numDimsField);
// When the field has several time slices, add a time dimension.
//if (slice.IsTimeDependent())
// fieldSize[numDimsField - 1] = slice.GetNumTimeSlices();
// Change order of dimensions, so that fastest dimension is at the end.
for (int dim = 0; dim < fieldSize.Length / 2; ++dim)
{
int tmp = fieldSize[dim];
fieldSize[dim] = fieldSize[fieldSize.Length - 1 - dim];
fieldSize[fieldSize.Length - 1 - dim] = tmp;
}
// Create a grid descriptor for the field.
// TODO: Actually load this data.
RectlinearGrid grid = new RectlinearGrid(fieldSize);//, new Vector(0.0f, fieldSize.Length), new Vector(0.1f, fieldSize.Length));
// Create scalar field instance and fill it with data.
field = new ScalarField(grid);
int sliceSize = grid.Size.Product();// / slice.GetNumTimeSlices();
// Get data. x64 dll fails in debug here...
ncState = NetCDF.nc_get_vara_float(_fileID, (int)slice.GetVariable(), offsets.Data, sizeInFile, field.Data);
Debug.Assert(ncState == NetCDF.ResultCode.NC_NOERR, ncState.ToString());
// Read in invalid value.
float[] invalidval = new float[1];
ncState = NetCDF.nc_get_att_float(_fileID, (int)slice.GetVariable(), "_FillValue", invalidval);
field.InvalidValue = invalidval[0];
return(field);
}
public static VectorField GetRingField(int numCells)
{
ScalarField[] fields = new ScalarField[2];
Index size = new Index(numCells + 1, 2);
Vector origin = new Vector(-2, 2);
Vector cell = new Vector(4.0f / numCells, 2);
fields[0] = ScalarField.FromAnalyticalField(RingFieldX, size, origin, cell);
fields[1] = ScalarField.FromAnalyticalField(RingFieldY, size, origin, cell);
return new VectorField(fields);
}
public ScalarField(ScalarField field, SGFunction function, bool needJ = true)
{
_data = new float[field.Size.Product()];
Grid = field.Grid;
this.InvalidValue = field.InvalidValue;
GridIndex indexIterator = new GridIndex(field.Size);
foreach (GridIndex index in indexIterator)
{
float s = field[(int)index];
if (s == InvalidValue)
{
this[(int)index] = (float)InvalidValue;
}
else
{
Vector g = needJ ? field.SampleDerivative(index) : new Vec2(0, 0);
this[(int)index] = function(s, g);
}
}
}
public virtual float Sample(ScalarField field, Vector position)
{
// Query relevant edges and their weights. Reault varies with different grid types.
int numCells = NumAdjacentPoints();
float[] weights;
int[] indices = FindAdjacentIndices(position, out weights);
Debug.Assert(indices.Length == weights.Length);
// Start with the first grid point.
float result = field[indices[0]];
if (result == field.InvalidValue)
return (float)field.InvalidValue;
result *= weights[0];
// Add the other weightes grid points.
for (int dim = 1; dim < indices.Length; ++dim)
{
if (field[indices[dim]] == field.InvalidValue)
return (float)field.InvalidValue;
result += weights[dim] * field[indices[dim]];
}
return result;
}
public static void TestCP()
{
Random rnd = new Random(DateTime.Today.Millisecond);
RectlinearGrid grid = new RectlinearGrid(new Index(2, 2));
ScalarField cell0 = new ScalarField(grid);
ScalarField cell1 = new ScalarField(grid);
for (int tests = 0; tests < 100; ++tests)
{
for (int i = 0; i < 4; ++i)
{
cell0.Data[i] = (float)rnd.NextDouble() - 0.5f;
cell1.Data[i] = (float)rnd.NextDouble() - 0.5f;
}
VectorField cell = new VectorField(new ScalarField[] { cell0, cell1 });
//PointSet<Point> points = FieldAnalysis.ComputeCriticalPointsRegularAnalytical2D(cell);
}
}
/// <summary>
/// Load a slice from the file.
/// </summary>
/// <param name="slice">Carries variable to load, dimensions in file and what to load.</param>
/// <returns></returns>
public override ScalarFieldUnsteady LoadTimeSlices(SliceRange slice, int starttime = -1, int timelength = -1)
{
Index offsets = new Index(slice.GetOffsets());
int spaceDims = 4;
int[] sizeInFile = slice.GetLengths();
Debug.Assert(starttime == -1 && timelength == -1, "Ignoring those parameters. Plase specify in the SliceRange instance!");
// Probably has less dimensions.
int[] sizeField = new int[spaceDims];
int numDimsField = 0;
// Exclude time dimension. It will be treated differently.
for (int dim = 0; dim < offsets.Length; ++dim)
{
if (offsets[dim] != -1 && sizeInFile[dim] > 1)
{
sizeField[numDimsField++] = sizeInFile[dim];
}
// Include whole dimension.
else if (offsets[dim] == -1)
{
// Fill size.
sizeInFile[dim] = _dimLengths[dim];
// Set offset to one. offset = 0, size = size of dimension.
offsets[dim] = 0;
// Save size in size-vector for the scalar field.
sizeField[numDimsField++] = sizeInFile[dim];
}
}
int numSpaceDims = ((sizeInFile[0] > 1) ? 1 : 0) + ((sizeInFile[1] > 1) ? 1 : 0) + ((sizeInFile[2] > 1) ? 1 : 0);
Index fieldSize = new Index(numSpaceDims);
Array.Copy(sizeField, fieldSize.Data, fieldSize.Length);
Debug.Assert(sizeInFile[3] == 1, "How should I load several members into one data block???");
// Create a grid descriptor for the field.
// TODO: Actually load this data.
RectlinearGrid grid = new RectlinearGrid(fieldSize);
// Create scalar field instance and fill it with data.
int sliceSize = grid.Size.Product();
// For each time and subtime step, run through them.
ScalarField[] fields = new ScalarField[sizeInFile[4] * sizeInFile[5]];
int indexTime = 0;
for (int time = 0; time < sizeInFile[spaceDims]; ++time)
{
for (int subtime = 0; subtime < sizeInFile[spaceDims + 1]; ++subtime)
{
// Now, load one single file.
string filename = RedSea.Singleton.GetFilename(offsets[spaceDims] + time, offsets[spaceDims + 1] + subtime, offsets[3], slice.GetVariable());
using (FileStream fs = File.Open(@filename, FileMode.Open))
{
// Read in the data you need.
using (BinaryReader reader = new BinaryReader(fs))
{
// Read in all floats.
Debug.Assert(reader.BaseStream.Length >= sliceSize * sizeof(float));
fields[indexTime] = new ScalarField(grid);
int indexSpace = 0;
for (int z = offsets[2]; z < offsets[2] + sizeInFile[2]; ++z)
{
// Set file reader position to right start point.
reader.BaseStream.Seek(z * _dimLengths[0] * _dimLengths[1] + offsets[1] * _dimLengths[0] + offsets[0], SeekOrigin.Begin);
for (int y = offsets[1]; y < offsets[1] + sizeInFile[1]; ++y)
{
for (int x = offsets[0]; x < offsets[0] + sizeInFile[0]; ++x)
{
fields[indexTime][indexSpace++] = reader.ReadSingle();
}
// Advance one line.
reader.BaseStream.Seek((_dimLengths[0] - sizeInFile[0]) * sizeof(float), SeekOrigin.Current);
}
}
}
}
// Change Endian of data.
if (!Range.CorrectEndian)
{
fields[indexTime].ChangeEndian();
for (int i = 0; i < fields[indexTime].Data.Length; ++i)
{
if (fields[indexTime].Data[i] == 0)
{
fields[indexTime].Data[i] = float.MaxValue;
}
}
fields[indexTime].InvalidValue = float.MaxValue;
}
// Go on to next file.
indexTime++;
}
}
return(new ScalarFieldUnsteady(fields, offsets[spaceDims] * _dimLengths[spaceDims + 1] + offsets[spaceDims + 1]));
}
public List <Renderable> ComputeStatistics()
{
List <Renderable> result = new List <Renderable>(200);
result.Add(new FieldPlane(Plane, Velocity.GetTimeSlice(_currentSetting.SliceTimeMain), _currentSetting.Shader, _currentSetting.Colormap));
if (!_initialized)
{
return(result);
}
result.Add(new LineBall(Plane, new LineSet(new Line[] { new Line()
{
Positions = new Vector3[] { _startSelection, _endSelection }
} })));
bool completelyNew = false;
// ~~~~~~~~~~~~~~ Get new Start Points ~~~~~~~~~~~~~~ //
if (_lastSetting == null ||
SliceTimeMainChanged ||
LineXChanged ||
_selectionChanged)
{
int numPoints = _startSelection == null ? 0 : Math.Max(2, _currentSetting.LineX + 1);
Point[] startPoints = new Point[numPoints];
// Compute point positions (linear interpolation).
for (int x = 0; x < numPoints; ++x)
{
float t = (float)x / (numPoints - 1);
startPoints[x] = new Point()
{
Position = _startSelection * (1.0f - t) + _endSelection * t
};
}
_linePoints = new PointSet <Point>(startPoints);
_values = new float[_linePoints.Length];
completelyNew = true;
}
// ~~~~~~~~~~~~ Compute Selected Measure ~~~~~~~~~~~~ //
if (completelyNew ||
MeasureChanged ||
FlatChanged ||
IntegrationTimeChanged ||
IntegrationTypeChanged ||
StepSizeChanged)
{
// ~~~~~~~~~~~~~ Compute Scalar FIeld ~~~~~~~~~~~~~~~ //
ScalarField measure = null;
switch (_currentSetting.Measure)
{
// Velocity Length / Pathline Length.
case RedSea.Measure.VELOCITY:
measure = new VectorField(Velocity.GetTimeSlice(_currentSetting.SliceTimeMain), FieldAnalysis.VFLength, 1).Scalars[0] as ScalarField;
break;
case RedSea.Measure.SURFACE_HEIGHT:
break;
case RedSea.Measure.SALINITY:
break;
case RedSea.Measure.TEMPERATURE:
break;
case RedSea.Measure.DIVERGENCE:
measure = new VectorField(Velocity.GetTimeSlice(_currentSetting.SliceTimeMain), FieldAnalysis.Divergence, 1).Scalars[0] as ScalarField;
break;
// Closeness of Pathline.
case RedSea.Measure.DIVERGENCE_2D:
break;
case RedSea.Measure.VORTICITY:
measure = new VectorField(Velocity.GetTimeSlice(_currentSetting.SliceTimeMain), FieldAnalysis.Vorticity, 1).Scalars[0] as ScalarField;
break;
case RedSea.Measure.SHEAR:
measure = new VectorField(Velocity.GetTimeSlice(_currentSetting.SliceTimeMain), FieldAnalysis.Shear, 1).Scalars[0] as ScalarField;
break;
}
// ~~~~~~~~~~~~~~~~ Sample Field ~~~~~~~~~~~~~~~~~~~ //
switch (_currentSetting.Measure)
{
// Velocity Length / Pathline Length.
case RedSea.Measure.VELOCITY:
if (_currentSetting.IntegrationTime == 0)
{
for (int index = 0; index < _values.Length; ++index)
{
_values[index] = measure.Sample(((Vec3)_linePoints.Points[index].Position).ToVec2());
}
}
else
{
VectorField.Integrator integrator = VectorField.Integrator.CreateIntegrator(Velocity, _currentSetting.IntegrationType);
integrator.Direction = Sign.POSITIVE;
integrator.StepSize = _currentSetting.StepSize;
LineSet line = integrator.Integrate(_linePoints, _currentSetting.Flat, _currentSetting.IntegrationTime)[0];
for (int index = 0; index < _values.Length; ++index)
{
_values[index] = line.Lines[index].LineLength;
}
result.Add(new LineBall(Plane, line));
}
break;
// Simply sample a field.
case RedSea.Measure.SURFACE_HEIGHT:
case RedSea.Measure.SALINITY:
case RedSea.Measure.TEMPERATURE:
case RedSea.Measure.DIVERGENCE:
case RedSea.Measure.VORTICITY:
case RedSea.Measure.SHEAR:
for (int index = 0; index < _values.Length; ++index)
{
_values[index] = measure.Sample(((Vec3)_linePoints.Points[index].Position).ToVec2());
}
break;
// Closeness of Pathline.
case RedSea.Measure.DIVERGENCE_2D:
break;
}
completelyNew = true;
}
//if (completelyNew ||
// AlphaStableChanged ||
// LineSettingChanged)
//{
// ~~~~~~~~~~~~~~~~ Display the Graph ~~~~~~~~~~~~~~~ //
result.Add(FieldAnalysis.BuildGraph(Plane, _linePoints, _values, _currentSetting.AlphaStable, _currentSetting.LineSetting));
//}
_selectionChanged = false;
return(result);
}
/// <summary>
/// Add one field given as texture.
/// </summary>
/// <param name="field"></param>
public void AddScalar(ScalarField field)
{
ShaderResourceView[] cpy = _fieldTextures;
_fieldTextures = new ShaderResourceView[_fieldTextures.Length + 1];
Array.Copy(cpy, _fieldTextures, cpy.Length);
Texture2D tex = ColorMapping.GenerateTextureFromField(_device, field);
_fieldTextures[cpy.Length] = new ShaderResourceView(_device, tex);
SetRenderEffect(Effect);
}
public override VectorField GetSlicePlanarVelocity(int timeSlice)
{
ScalarField[] slices = new ScalarField[Size.Length - 1];
// Copy the grid - one dimension smaller!
RectlinearGrid grid = Grid as RectlinearGrid;
Index newSize = new Index(Size.Length - 1);
Array.Copy(Size.Data, newSize.Data, newSize.Length);
FieldGrid sliceGrid = new RectlinearGrid(newSize);
for (int i = 0; i < Size.Length - 1; ++i)
{
slices[i] = this._scalarsUnsteady[i].GetTimeSlice(timeSlice);
slices[i].TimeOrigin = timeSlice;
}
return new VectorField(slices);
}
public static VectorFieldUnsteady CreatePathlineSpiral(int numCells, int numSlices, float domainR = 2)
{
Vector origin = new Vec2(-domainR);
Vector cell = new Vec2(2 * domainR / numCells);
Index size = new Index(numCells + 1, 2);
ScalarField[] vX = new ScalarField[numSlices];
ScalarField[] vY = new ScalarField[numSlices];
for (int slice = 0; slice < numSlices; ++slice)
{
vX[slice] = ScalarField.FromAnalyticalField(x =>(float)Math.Cos((float)slice / 3)*4, size, origin, cell);
vY[slice] = ScalarField.FromAnalyticalField(x =>(float)Math.Sin((float)slice / 3)*4, size, origin, cell);
}
return new VectorFieldUnsteady(new ScalarFieldUnsteady[] { new ScalarFieldUnsteady(vX), new ScalarFieldUnsteady(vY) });
}
public VectorField GetTimeSlice(int slice)
{
ScalarField[] slices = new ScalarField[Scalars.Length];
for (int scalar = 0; scalar < Scalars.Length; ++scalar)
{
slices[scalar] = _scalarsUnsteady[scalar].GetTimeSlice(slice);
}
var result = new VectorField(slices);
result.TimeSlice = slice;
result.InvalidValue = InvalidValue;
return result;
}
/// <summary>
/// Setup as empty map with only one value at 1.
/// </summary>
/// <param name="pos"></param>
/// <param name="fieldEnsemble"></param>
/// <param name="startTime"></param>
/// <param name="endTime"></param>
public void SetupPoint(Int2 pos, int startTime)
{
// ~~~~~~~~~~~~~~ Copy relevant data ~~~~~~~~~~~~~~ \\
// Count up when advection was executed.
CurrentTime = startTime;
_startTime = startTime;
// ~~~~~~~~~~~~ Load ensemble ~~~~~~~~~~~~ \\
// Load fields first to get the grid size.
//Loader ncFile = new Loader(RedSea.Singleton.DataFolder + (_startTime + 1) + RedSea.Singleton.FileName);
//ScalarField t0X = ncFile.LoadFieldSlice(_ensembleRanges[0]);
//ScalarField t0Y = ncFile.LoadFieldSlice(_ensembleRanges[1]);
//ncFile.Close();
LoaderNCF ncFile = RedSea.Singleton.GetLoaderNCF(_startTime);
ScalarField t1X = ncFile.LoadFieldSlice(_ensembleRanges[0]);
ScalarField t1Y = ncFile.LoadFieldSlice(_ensembleRanges[1]);
ncFile.Close();
// ~~~~~~~~~~~~~~ Copy relevant data ~~~~~~~~~~~~~~ \\
// Keep for plane creation and size reference.
_ensembleGrid = t1X.Grid as RectlinearGrid;
// Mapper for binding the SlimDX texture to CUDA easily.
_cudaDxMapper = new CudaGraphicsInteropResourceCollection();
// Tell CUDA which value is a border.
_texInvalidValue = t1X.InvalidValue ?? float.MaxValue;
// ~~~~~~~~~~~~ Fill CUDA resources ~~~~~~~~~~~~ \\
// All members are above each other.
int vHeight = _height * _numMembers;
//// vX, t=0
//_t0X = new CudaArray2D(CUArrayFormat.Float, _width, vHeight, CudaArray2DNumChannels.One);
//_t0X.CopyFromHostToThis<float>(t0X.Data);
//new CudaTextureArray2D(_advectParticlesKernel, "vX_t0", CUAddressMode.Wrap, CUFilterMode.Linear, CUTexRefSetFlags.None, _t0X);
//// vY, t=0
//_t0Y = new CudaArray2D(CUArrayFormat.Float, _width, vHeight, CudaArray2DNumChannels.One);
//_t0Y.CopyFromHostToThis<float>(t0Y.Data);
//new CudaTextureArray2D(_advectParticlesKernel, "vY_t0", CUAddressMode.Wrap, CUFilterMode.Linear, CUTexRefSetFlags.None, _t0Y);
// vX, t=1
_t1X = new CudaArray2D(CUArrayFormat.Float, _width, vHeight, CudaArray2DNumChannels.One);
_t1X.CopyFromHostToThis <float>(t1X.Data);
new CudaTextureArray2D(_advectParticlesKernel, "vX_t1", CUAddressMode.Wrap, CUFilterMode.Linear, CUTexRefSetFlags.None, _t1X);
// vY, t=1
_t1Y = new CudaArray2D(CUArrayFormat.Float, _width, vHeight, CudaArray2DNumChannels.One);
_t1Y.CopyFromHostToThis <float>(t1Y.Data);
new CudaTextureArray2D(_advectParticlesKernel, "vY_t1", CUAddressMode.Wrap, CUFilterMode.Linear, CUTexRefSetFlags.None, _t1Y);
// ~~~~~~~~~~~~~ Create texture ~~~~~~~~~~~~~~~~~~~~ \\
// Create texture. Completely zero, except for one point.
Texture2DDescription desc = new Texture2DDescription
{
ArraySize = 1,
BindFlags = BindFlags.ShaderResource,
CpuAccessFlags = CpuAccessFlags.None,
Format = Format.R32_Float,
Width = _width,
Height = _height,
MipLevels = 1,
OptionFlags = ResourceOptionFlags.None,
SampleDescription = new SampleDescription(1, 0),
Usage = ResourceUsage.Default
};
// Put field data into stream/rectangle object
float[] zeros = new float[_width * _height];
Array.Clear(zeros, 0, zeros.Length);
// Fill the empty texture.
DataRectangle texData = new DataRectangle(_width * sizeof(float), new DataStream(zeros, true, true));
_pongFlowMap = new CudaDeviceVariable <float>(_width * _height);//new Texture2D(_device, desc, texData);
// Magically, copy to device happens here.
_pongFlowMap = zeros;
// Add one pixel for integration.
zeros[pos.X + pos.Y * _width] = 1;
texData = new DataRectangle(_width * sizeof(float), new DataStream(zeros, true, true));
// Create texture.
FlowMap = new Texture2D(_device, desc, texData);
// ~~~~~~~~~ Make textures mappable to CUDA ~~~~~~~~~~ \\
_cudaDxMapper.Add(new CudaDirectXInteropResource(FlowMap.ComPointer, CUGraphicsRegisterFlags.None, CudaContext.DirectXVersion.D3D11));
_cudaDxMapper.MapAllResources();
CudaArray2D lastFlowMap = _cudaDxMapper[0].GetMappedArray2D(0, 0);
new CudaTextureArray2D(_advectParticlesKernel, "flowMap", CUAddressMode.Wrap, CUFilterMode.Linear, CUTexRefSetFlags.None, lastFlowMap);
_cudaDxMapper.UnmapAllResources();
}
private FieldPlane LoadPlane(int member, int time)
{
ScalarField[] scalars;// = new ScalarField[2];
//RedSea.Variable measureAsVar;
//switch (_currentSetting.Measure)
//{
// case RedSea.Measure.SALINITY:
// case RedSea.Measure.SURFACE_HEIGHT:
// case RedSea.Measure.TEMPERATURE:
// measureAsVar = (RedSea.Variable)(int)_currentSetting.Measure;
// break;
// default:
// measureAsVar = RedSea.Variable.VELOCITY_Z;
// break;
//}
int stepTime = time / 12;
int substepTime = time - (stepTime * 12);
// substepTime *= 9;
LoaderRaw file = RedSea.Singleton.GetLoader(stepTime, substepTime, member, RedSea.Variable.VELOCITY_X) as LoaderRaw;
int height = _currentSetting.Measure == RedSea.Measure.SURFACE_HEIGHT ? 0 : _currentSetting.SliceHeight;
file.Range.SetMember(RedSea.Dimension.GRID_Z, height);
file.Range.CorrectEndian = false;
switch (_currentSetting.Measure)
{
case RedSea.Measure.VELOCITY:
case RedSea.Measure.DIVERGENCE:
case RedSea.Measure.VORTICITY:
case RedSea.Measure.SHEAR:
case RedSea.Measure.DIVERGENCE_2D:
scalars = new ScalarField[2];
LoadVelocity:
scalars[0] = file.LoadFieldSlice();
file.Range.SetVariable(RedSea.Variable.VELOCITY_Y);
scalars[1] = file.LoadFieldSlice();
break;
default:
RedSea.Measure var = _currentSetting.Measure;
// Maybe load vector field too.
bool addVelocity = (_currentSetting.Shader == FieldPlane.RenderEffect.LIC || _currentSetting.Shader == FieldPlane.RenderEffect.LIC_LENGTH);
scalars = new ScalarField[addVelocity ? 3 : 1];
file.Range.SetVariable((RedSea.Variable)var);
scalars[scalars.Length - 1] = file.LoadFieldSlice();
if (addVelocity)
goto LoadVelocity;
break;
}
VectorField field;
switch (_currentSetting.Measure)
{
case RedSea.Measure.DIVERGENCE:
{
VectorField vel = new VectorField(scalars);
bool keepField = _currentSetting.Shader == FieldPlane.RenderEffect.LIC;
scalars = new ScalarField[keepField ? 3 : 1];
scalars[scalars.Length - 1] = new VectorField(vel, FieldAnalysis.Divergence, 1, true).Scalars[0] as ScalarField;
if (keepField)
{
scalars[0] = vel.Scalars[0] as ScalarField;
scalars[1] = vel.Scalars[1] as ScalarField;
}
break;
}
case RedSea.Measure.DIVERGENCE_2D:
{
VectorField vel = new VectorField(scalars);
scalars = new VectorField(vel, FieldAnalysis.Div2D, 2, true).Scalars as ScalarField[];
break;
}
case RedSea.Measure.VORTICITY:
{
VectorField vel = new VectorField(scalars);
bool keepField = _currentSetting.Shader == FieldPlane.RenderEffect.LIC;
scalars = new ScalarField[keepField ? 3 : 1];
scalars[scalars.Length - 1] = new VectorField(vel, FieldAnalysis.Vorticity, 1, true).Scalars[0] as ScalarField;
if (keepField)
{
scalars[0] = vel.Scalars[0] as ScalarField;
scalars[1] = vel.Scalars[1] as ScalarField;
}
break;
}
case RedSea.Measure.SHEAR:
{
VectorField vel = new VectorField(scalars);
bool keepField = _currentSetting.Shader == FieldPlane.RenderEffect.LIC;
scalars = new ScalarField[keepField ? 3 : 1];
scalars[scalars.Length - 1] = new VectorField(vel, FieldAnalysis.Shear, 1, true).Scalars[0] as ScalarField;
if (keepField)
{
scalars[0] = vel.Scalars[0] as ScalarField;
scalars[1] = vel.Scalars[1] as ScalarField;
}
break;
}
default:
break;
}
field = new VectorField(scalars);
_grid = field.Grid as RectlinearGrid;
return new FieldPlane(Plane, field, _currentSetting.Shader, _currentSetting.Colormap);
}
private Tuple<FieldPlane, RectlinearGrid> LoadPlaneAndGrid(int member, int time, int subtime = 0, bool timeOffset = false)
{
LoaderRaw loader = new LoaderRaw();
ScalarField[] scalars;// = new ScalarField[2];
// Read in the data.
//_ranges[0].SetMember(RedSea.Dimension.MEMBER, _currentSetting.MemberMain);
//_ranges[1].SetMember(RedSea.Dimension.MEMBER, _currentSetting.MemberMain);
//LoaderNCF ncFile = RedSea.Singleton.GetLoaderNCF(time);
loader.Range.SetMember(RedSea.Dimension.MEMBER, member);
loader.Range.SetMember(RedSea.Dimension.TIME, time);
loader.Range.SetMember(RedSea.Dimension.SUBTIME, subtime);
switch (_currentSetting.Measure)
{
case RedSea.Measure.VELOCITY:
case RedSea.Measure.DIVERGENCE:
case RedSea.Measure.VORTICITY:
case RedSea.Measure.SHEAR:
case RedSea.Measure.DIVERGENCE_2D:
scalars = new ScalarField[2];
LoadVelocity:
loader.Range.SetMember(RedSea.Dimension.GRID_Z, _currentSetting.SliceHeight);
//_variableRanges[(int)RedSea.Variable.VELOCITY_X].SetMember(RedSea.Dimension.MEMBER, member);
//_variableRanges[(int)RedSea.Variable.VELOCITY_Y].SetMember(RedSea.Dimension.MEMBER, member);
//_variableRanges[(int)RedSea.Variable.VELOCITY_X].SetMember(RedSea.Dimension.CENTER_Z, _currentSetting.SliceHeight);
//_variableRanges[(int)RedSea.Variable.VELOCITY_Y].SetMember(RedSea.Dimension.CENTER_Z, _currentSetting.SliceHeight);
scalars[0] = loader.LoadFieldSlice(RedSea.Variable.VELOCITY_X);
scalars[1] = loader.LoadFieldSlice(RedSea.Variable.VELOCITY_Y);
//scalars[0] = ncFile.LoadFieldSlice( _variableRanges[(int)RedSea.Variable.VELOCITY_X]);
//scalars[1] = ncFile.LoadFieldSlice(_variableRanges[(int)RedSea.Variable.VELOCITY_Y]);
break;
default:
RedSea.Measure var = _currentSetting.Measure;
//_variableRanges[(int)var].SetMember(RedSea.Dimension.MEMBER, member);
int sliceHeight = (var == RedSea.Measure.SURFACE_HEIGHT) ? 0 : _currentSetting.SliceHeight;
loader.Range.SetMember(RedSea.Dimension.GRID_Z, sliceHeight);
//_variableRanges[(int)var].SetMember(RedSea.Dimension.CENTER_Z, _currentSetting.SliceHeight);
// Maybe load vector field too.
bool addVelocity = (_currentSetting.Shader == FieldPlane.RenderEffect.LIC || _currentSetting.Shader == FieldPlane.RenderEffect.LIC_LENGTH);
scalars = new ScalarField[addVelocity ? 3 : 1];
scalars[scalars.Length - 1] = loader.LoadFieldSlice((RedSea.Variable)var); //ncFile.LoadFieldSlice(_variableRanges[(int)var]);
if (addVelocity)
goto LoadVelocity;
break;
}
//ncFile.Close();
VectorField field;
switch (_currentSetting.Measure)
{
case RedSea.Measure.DIVERGENCE:
{
VectorField vel = new VectorField(scalars);
bool keepField = _currentSetting.Shader == FieldPlane.RenderEffect.LIC;
scalars = new ScalarField[keepField ? 3 : 1];
scalars[scalars.Length - 1] = new VectorField(vel, FieldAnalysis.Divergence, 1, true).Scalars[0] as ScalarField;
if (keepField)
{
scalars[0] = vel.Scalars[0] as ScalarField;
scalars[1] = vel.Scalars[1] as ScalarField;
}
break;
}
case RedSea.Measure.DIVERGENCE_2D:
{
VectorField vel = new VectorField(scalars);
scalars = new VectorField(vel, FieldAnalysis.Div2D, 2, true).Scalars as ScalarField[];
break;
}
case RedSea.Measure.VORTICITY:
{
VectorField vel = new VectorField(scalars);
bool keepField = _currentSetting.Shader == FieldPlane.RenderEffect.LIC;
scalars = new ScalarField[keepField ? 3 : 1];
scalars[scalars.Length - 1] = new VectorField(vel, FieldAnalysis.Vorticity, 1, true).Scalars[0] as ScalarField;
if (keepField)
{
scalars[0] = vel.Scalars[0] as ScalarField;
scalars[1] = vel.Scalars[1] as ScalarField;
}
break;
}
case RedSea.Measure.SHEAR:
{
VectorField vel = new VectorField(scalars);
bool keepField = _currentSetting.Shader == FieldPlane.RenderEffect.LIC;
scalars = new ScalarField[keepField ? 3 : 1];
scalars[scalars.Length - 1] = new VectorField(vel, FieldAnalysis.Shear, 1, true).Scalars[0] as ScalarField;
if (keepField)
{
scalars[0] = vel.Scalars[0] as ScalarField;
scalars[1] = vel.Scalars[1] as ScalarField;
}
break;
}
default:
break;
}
field = new VectorField(scalars);
//loader.Range.SetMember(RedSea.Dimension.TIME, time+1);
//var x = loader.LoadFieldSlice(RedSea.Variable.VELOCITY_X);
//var y = loader.LoadFieldSlice(RedSea.Variable.VELOCITY_Y);
//ScalarFieldUnsteady xS = new ScalarFieldUnsteady(new ScalarField[] { scalars[0], x });
//xS.DoNotScale();
//ScalarFieldUnsteady yS = new ScalarFieldUnsteady(new ScalarField[] { scalars[0], y });
//yS.DoNotScale();
//VectorFieldUnsteady twoSlices = new VectorFieldUnsteady(new ScalarFieldUnsteady[] { xS, yS });
//Console.WriteLine("Remooove meeeeee!");
//VectorFieldUnsteady awriuwergioaheosiohlbyuygowgfuyvbui = new VectorFieldUnsteady(twoSlices, FieldAnalysis.Acceleration, 2);
field.TimeSlice = timeOffset ? time * RedSea.Singleton.NumSubsteps + subtime/*time + (float)subtime / RedSea.Singleton.NumSubsteps*/ : 0;
// field = new VectorField(velocity, FieldAnalysis.StableFFF, 3, true);
RectlinearGrid grid = field.Grid as RectlinearGrid;
return new Tuple<FieldPlane, RectlinearGrid>(new FieldPlane(Plane, field, _currentSetting.Shader, _currentSetting.Colormap), grid);
}