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 override void ClickSelection(Vector2 point)
{
if (LineX > 0)
{
_lastSelection = (_lastSelection + 1) % LineX;
Vec3 vec = new Vec3((Vec2)point, 0);
if (_velocity.Grid.InGrid(vec))
{
Vector3[] line = _integrator.IntegrateLineForRendering(vec).Points.ToArray();
Line newLine = new Line()
{
Positions = line
};
var set = new LineSet(new Line[] { newLine })
{
Color = _flipColor? Vector3.UnitX : Vector3.UnitZ
};
set.Thickness *= 3;
var ball = new LineBall(Plane, set, LineBall.RenderEffect.DEFAULT, Colormap, false);
_selections.Add(ball);
if (_selections.Count > LineX)
{
_selections.RemoveAt(0);
_selectionsAngle.RemoveAt(0);
_steadySelection.RemoveAt(0);
}
Graph2D[] angle = FieldAnalysis.GetDistanceToAngle(_core, Vector2.Zero, new LineSet(new Line[] { newLine }));
Debug.Assert(angle.Length == 1);
for (int p = 0; p < newLine.Length; ++p)
{
Vector3 sph = FieldAnalysis.SphericalPosition(_core[0], (float)(angle[0].X[p] * 0.5f / Math.PI), angle[0].Fx[p]);
newLine[p] = new Vector3(sph.X, sph.Y, angle[0].X[p] - angle[0].X[0]);
}
set = new LineSet(new Line[] { newLine })
{
Color = _flipColor ? Vector3.UnitX : Vector3.UnitZ
};
set.Thickness *= 3;
ball = new LineBall(Plane, set, LineBall.RenderEffect.DEFAULT, Colormap, false);
_selectionsAngle.Add(ball);
_integrator.Field = _steadyField;
_integrator.MaxNumSteps = 50;
line = _integrator.IntegrateLineForRendering(new Vec2(vec.X, vec.Y)).Points.ToArray();
newLine = new Line()
{
Positions = line
};
set = new LineSet(new Line[] { newLine })
{
Color = _flipColor ? Vector3.UnitX : Vector3.UnitZ
};
set.Thickness *= 3;
ball = new LineBall(new Plane(Plane, Vector3.UnitZ * 0.1f), set, LineBall.RenderEffect.DEFAULT, Colormap, false);
_steadySelection.Add(ball);
_integrator.Field = _velocity;
_integrator.MaxNumSteps = 10000;
_flipColor = !_flipColor;
//var set = new LineSet(_selections.ToArray()) { Color = _selections.Count % 2 == 0 ? Vector3.UnitX : Vector3.UnitY };
//_lines = new LineBall(Plane, set, LineBall.RenderEffect.DEFAULT, Colormap, false);
}
}
}
