public void Calculate(
double Thrust,
FlowParameters FlowParameters,
EngineSoundContourParameters ContourParameters,
out EngineSoundContour EngineSoundContour) // см. метод с аналогичной сигнатурой в IModel
{
var FlowSoundParameters = GetFlowSoundParameters(Thrust, FlowParameters);
var EngineSoundLevel = GetEngineSoundLevel(Thrust, FlowParameters);
int Nx, Ny, W, H;
if (ContourParameters.ContourAreaWidth >= ContourParameters.ContourAreaHeight)
{
Ny = 51;
H = 1000;
Nx = (int)(Ny * ContourParameters.ContourAreaWidth / ContourParameters.ContourAreaHeight);
W = (int)(H * ContourParameters.ContourAreaWidth / ContourParameters.ContourAreaHeight);
}
else
{
Nx = 51;
W = 1000;
Ny = (int)(Nx * ContourParameters.ContourAreaHeight / ContourParameters.ContourAreaWidth);
H = (int)(W * ContourParameters.ContourAreaHeight / ContourParameters.ContourAreaWidth);
}
var X = new double[Nx];
var Y = new double[Ny];
double dX = ContourParameters.ContourAreaWidth / (Nx - 1);
double dY = ContourParameters.ContourAreaHeight / (Ny - 1);
for (int i = 0; i < Nx; i++)
{
X[i] = i * dX;
}
for (int i = 0; i < Ny; i++)
{
Y[i] = i * dY;
}
var SoundLevels = new double[Nx, Ny];
for (int i = 0; i < Nx; i++)
{
double x = X[i] - FlowSoundParameters.DistanceToPointOfMaximalSoundLevel - ContourParameters.NozzleCoordinate;
x = Math.Abs(x) < 0.001 ? 0.001 : x;
for (int j = 0; j < Ny; j++)
{
double y = Math.Abs(Y[j] - ContourParameters.ContourAreaHeight / 2);
double Angle;
if (x == 0)
{
Angle = Math.Sign(y) * Math.PI / 2;
}
else
{
Angle = Math.Atan(y / Math.Abs(x));
if (x < 0)
{
Angle = Math.PI - Angle;
}
}
double Radius = Math.Sqrt(x * x + y * y);
SoundLevels[i, j] = EngineSoundLevel(Radius, Angle);
}
}
var Contour = new Bitmap(W, H);
EngineSoundContour = new EngineSoundContour(X, Y, SoundLevels, Contour);
ModifyEngineSoundContour(ContourParameters.MinSoundLevel, ContourParameters.MaxSoundLevel, ref EngineSoundContour);
}
public void ModifyEngineSoundContour(
double MinSoundLevel,
double MaxSoundLevel,
ref EngineSoundContour EngineSoundContour) // см. метод с аналогичной сигнатурой в IModel
{
int ImageWidth = EngineSoundContour.Contour.Width;
int ImageHeight = EngineSoundContour.Contour.Height;
double[] X = EngineSoundContour.X;
double[] Y = EngineSoundContour.Y;
double[,] SoundLevels = EngineSoundContour.SoundLevels;
var Contour = new Bitmap(ImageWidth, ImageHeight);
using (var g = Graphics.FromImage(Contour))
{
int gNx = 300, gNy = 300;
double mux = X.Max() / ImageWidth;
double muy = Y.Max() / ImageHeight;
int dx = ImageWidth / gNx;
int dy = ImageHeight / gNy;
double Max = SoundLevels[0, 0];
double Min = Max;
var Interpolator = new DoubleInterpolation(X, Y, SoundLevels);
for (int i = 0; i < SoundLevels.GetLength(0); i++)
{
for (int j = 0; j < SoundLevels.GetLength(1); j++)
{
if (SoundLevels[i, j] > Max)
{
Max = SoundLevels[i, j];
}
else if (SoundLevels[i, j] < Min)
{
Min = SoundLevels[i, j];
}
}
}
var Intervals = new double[] { 0, 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0, 9.0, 10.0, 11.0 };
var R = new Interpolation(Intervals, new double[] { 0, 0, 0, 0, 0, 0, 124, 203, 255, 255, 255, 255 });
var G = new Interpolation(Intervals, new double[] { 0, 124, 203, 255, 255, 255, 255, 255, 255, 203, 124, 0 });
var B = new Interpolation(Intervals, new double[] { 255, 255, 255, 255, 203, 124, 0, 0, 0, 0, 0, 0 });
Func <double, Color> GetColor = x =>
{
x = (x - MinSoundLevel) / (MaxSoundLevel - MinSoundLevel);
return(Color.FromArgb(
(int)R.Interpolate(x * 11),
(int)G.Interpolate(x * 11),
(int)B.Interpolate(x * 11)));
};
for (int i = 0; i < gNx; i++)
{
ProgressChanged((int)(i * 100.0 / gNx));
int x = i * ImageWidth / gNx;
for (int j = 0; j < gNy; j++)
{
int y = j * ImageHeight / gNy;
var color = GetColor(Interpolator.Interpolate(x * mux, y * muy));
using (var Brush = new SolidBrush(color))
{
g.FillRectangle(Brush, x, y, i * dx, i * dy);
}
}
}
}
ProgressChanged(100);
EngineSoundContour = new EngineSoundContour(X, Y, SoundLevels, Contour);
}
public void ModifyEngineSoundContour(double MinSoundLevel, double MaxSoundLevel, ref EngineSoundContour EngineSoundContour)
{
engineNoiseModel.ModifyEngineSoundContour(MinSoundLevel, MaxSoundLevel, ref EngineSoundContour);
}
void MainView_CalculateEngineNoise(CalculateEngineNoiseEventArgs e)
{
var summary = new EngineAcousticsLoadSummary(
engineNoiseCalculation.FlowSoundParameters,
engineNoiseCalculation.FrequencyCharacteristik,
engineNoiseCalculation.RadiationPattern,
engineNoiseCalculation.EngineAcousticsLoadAtFrequency,
engineNoiseCalculation.EngineAcousticsLoadSummary);
EngineSoundContour EngineSoundContour = engineNoiseCalculation.EngineSoundContour;
Func <bool> ContourCoordinatesNotNull = () =>
engineNoiseCalculation.ContourAreaHeight *
engineNoiseCalculation.ContourAreaWidth *
engineNoiseCalculation.NozzleCoordinate *
engineNoiseCalculation.MinSoundLevel *
engineNoiseCalculation.MaxSoundLevel != 0;
if (engineNoiseCalculation.InputDataChanged)
{
Model.CalculateEngineAcousticsLoadSummary(
engineNoiseCalculation.Thrust,
engineNoiseCalculation.FlowParameters,
out summary);
if (ContourCoordinatesNotNull())
{
Model.CalculateEngineSoundContour(
engineNoiseCalculation.Thrust,
engineNoiseCalculation.FlowParameters,
new EngineSoundContourParameters(
engineNoiseCalculation.ContourAreaWidth,
engineNoiseCalculation.ContourAreaHeight,
engineNoiseCalculation.NozzleCoordinate,
engineNoiseCalculation.MinSoundLevel,
engineNoiseCalculation.MaxSoundLevel),
out EngineSoundContour);
}
}
else if (engineNoiseCalculation.ContourCoordinatesChanged)
{
if (ContourCoordinatesNotNull())
{
Model.CalculateEngineSoundContour(
engineNoiseCalculation.Thrust,
engineNoiseCalculation.FlowParameters,
new EngineSoundContourParameters(
engineNoiseCalculation.ContourAreaWidth,
engineNoiseCalculation.ContourAreaHeight,
engineNoiseCalculation.NozzleCoordinate,
engineNoiseCalculation.MinSoundLevel,
engineNoiseCalculation.MaxSoundLevel),
out EngineSoundContour);
}
}
else if (engineNoiseCalculation.ContourColorsChanged)
{
if (ContourCoordinatesNotNull())
{
Model.ModifyEngineSoundContour(engineNoiseCalculation.MinSoundLevel, engineNoiseCalculation.MaxSoundLevel, ref EngineSoundContour);
}
}
engineNoiseCalculation.FlowSoundParameters = summary.FlowSoundParameters;
engineNoiseCalculation.FrequencyCharacteristik = summary.FrequencyCharacteristik;
engineNoiseCalculation.RadiationPattern = summary.RadiationPattern;
engineNoiseCalculation.EngineAcousticsLoadAtFrequency = summary.EngineAcousticsLoadAtFrequency;
engineNoiseCalculation.EngineAcousticsLoadSummary = summary.SummaryLoad;
engineNoiseCalculation.EngineSoundContour = EngineSoundContour;
e.FlowSoundParameters = summary.FlowSoundParameters;
e.FrequencyCharacteristik = summary.FrequencyCharacteristik;
e.RadiationPattern = summary.RadiationPattern;
e.EngineAcousticsLoadAtFrequency = summary.EngineAcousticsLoadAtFrequency;
e.EngineAcousticsLoadSummary = summary.SummaryLoad;
e.EngineSoundContour = EngineSoundContour;
engineNoiseCalculation.InputDataChanged = false;
engineNoiseCalculation.ContourCoordinatesChanged = false;
engineNoiseCalculation.ContourColorsChanged = false;
}
public void CalculateEngineSoundContour(double Thrust, FlowParameters FlowParameters, EngineSoundContourParameters ContourParameters, out EngineSoundContour EngineSoundContour)
{
engineNoiseModel.Calculate(Thrust, FlowParameters, ContourParameters, out EngineSoundContour);
}
