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Classes_Math.cs
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Classes_Math.cs
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//'Pachyderm-Acoustic: Geometrical Acoustics for Rhinoceros (GPL) by Arthur van der Harten
//'
//'This file is part of Pachyderm-Acoustic.
//'
//'Copyright (c) 2008-2015, Arthur van der Harten
//'Pachyderm-Acoustic is free software; you can redistribute it and/or modify
//'it under the terms of the GNU General Public License as published
//'by the Free Software Foundation; either version 3 of the License, or
//'(at your option) any later version.
//'Pachyderm-Acoustic is distributed in the hope that it will be useful,
//'but WITHOUT ANY WARRANTY; without even the implied warranty of
//'MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
//'GNU General Public License for more details.
//'
//'You should have received a copy of the GNU General Public
//'License along with Pachyderm-Acoustic; if not, write to the Free Software
//'Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
using System.Collections.Generic;
using System;
using Pachyderm_Acoustic.Environment;
using Hare.Geometry;
namespace Pachyderm_Acoustic
{
namespace Utilities
{
public static partial class Numerics
{
public static double rt2 = Math.Sqrt(2);
public static double PiX2 = 2 * Math.PI;
public static double Pi_180 = Math.PI / 180;
public static double[] angularFrequency = new double[] { 62.5 * PiX2, 125 * PiX2, 250 * PiX2, 500 * PiX2, 1000 * PiX2, 2000 * PiX2, 4000 * PiX2, 8000 * PiX2 };
public enum ComplexComponent
{
Real,
Imaginary,
Magnitude
}
public static void ExpComplex(float re, float im, out float re_out, out float im_out)
{
float exp = (float)Math.Exp(re);
re_out = exp * (float)Math.Cos(im);
im_out = exp * (float)Math.Sin(im);
}
public static void ExpComplex(double re, double im, out double re_out, out double im_out)
{
float exp = (float)Math.Exp(re);
re_out = exp * (float)Math.Cos(im);
im_out = exp * (float)Math.Sin(im);
}
public static float Abs(float re, float im)
{
return (float)Math.Sqrt((re * re) + (im * im));
}
public static double Abs(double re, double im)
{
return Math.Sqrt((re * re) + (im * im));
}
public static MathNet.Numerics.Complex jBessel(int order, MathNet.Numerics.Complex X)
{
//if (order < 1) throw new NotFiniteNumberException();
//Asymptotic Solution
//Get Angle
double Arg = X.Argument;
//double Arg = Math.Atan2(X.Imag, X.Real);
int asy_sign = (Arg >= 0) ? -1 : 1;
return (1 / (2 * Math.PI * X).SquareRoot()) * (asy_sign * MathNet.Numerics.Complex.I * (X - order * Math.PI / 2 - Math.PI / 4)).Exponential();
//MathNet.Numerics.Complex J;
//int ntmfact;
//if (order == 0)
//{
// J = 1;
// ntmfact = 1;
//}
//else if (order == 1)
//{
// J = X;
// ntmfact = 2;
//}
//else
//{
// ntmfact = 1;
// for (int i = 1; i <= order; i++) ntmfact *= i;
// MathNet.Numerics.Complex.Pow(X, order);
//}
//MathNet.Numerics.Complex series_sum = - X * X *.25;
//int mfact = 1;
//int t1 = 1;
//for (int m = 1; m < 1000; m++)
//{
// t1 *= -1;
// mfact *= m;
// ntmfact *= (m + order);
// series_sum += t1 * MathNet.Numerics.Complex.Pow(X, 2 * m) / (Math.Pow(2, 2 * m + order) * mfact * ntmfact);
//}
//return series_sum * MathNet.Numerics.Complex.Pow(X, order);
//MathNet.Numerics.Complex z, zproduct, zanswer, zarg;
//double k;
//int i;
//if (order > 2 || order < 0) throw new Exception("Order of Bessel function of first kind must be 0, 1 or 2");
//z = MathNet.Numerics.Complex.One;
//zproduct = MathNet.Numerics.Complex.One;
//zanswer = MathNet.Numerics.Complex.One;
//zarg = -0.25 * (X * X);
//for (i = 0; i < 1000; i++)
//{
// k = (i + 1) * (i + 1 + order);
// z = (1 / (k)) * (z * zarg);
// if (MathNet.Numerics.Complex.Abs(z) < 1e-20) break;
// zanswer = zanswer + z;
//}
//for (i = 0; i < order; i++) zproduct = zproduct * 0.5 * X;
//zanswer = zanswer * zproduct;
//return zanswer;
//if (order > 2 || order < 0) throw new Exception("Order of greater than 2, or less than zero not allowed");
//MathNet.Numerics.Complex z = 1, z_final = 1, z_int = -0.25 * (X * X);;
//for(int i = 0; i < 1000; i++)
//{
// z *= z_int / ((i + 1)*(i + 1 + order));
// if ((z.Real*z.Real + z.Imag * z.Imag) < 1e-22) break;
// z_final += z;
//}
//for(int i = 0; i < order; i++) z_final *= 0.5 * X;
//return z_final;
}
}
///<summary>
/// Simple Mathematical tools to estimate certain acoustical parameters...
///</summary>
public class AcousticalMath
{
/// <summary>
/// Calculate Sound Pressure Level (in dB) from intensity/energy.
/// </summary>
/// <param name="Intensity"></param>
/// <returns></returns>
public static double SPL_Intensity(double Intensity)
{
double SPL = 10 * Math.Log10(Intensity / 1E-12);
if (SPL < 0) return 0;
return SPL;
}
public static double SPL_Pressure(double Pressure)
{
return 20 * Math.Log10(Math.Abs(Pressure) / 2E-5);
}
/// <summary>
/// Calculate Sound Pressure Level (in dB) from intensity/energy for entire signal.
/// </summary>
/// <param name="Intensity"></param>
/// <returns></returns>
public static double[] SPL_Intensity_Signal(double[] Intensity)
{
for (int i = 0; i < Intensity.Length; i++)
{
Intensity[i] = SPL_Intensity(Intensity[i]);
}
return Intensity;
}
public static double[] SPL_Pressure_Signal(double[] P)
{
double[] SPL = new double[P.Length];
for (int i = 0; i < P.Length; i++)
{
SPL[i] = SPL_Pressure(P[i]);
}
return SPL;
}
/// <summary>
/// Calculates SPL-time curve from simulation output.
/// </summary>
/// <param name="Direct"></param>
/// <param name="ISData"></param>
/// <param name="RTData"></param>
/// <param name="CO_Time"></param>
/// <param name="samplerate"></param>
/// <param name="Octave">the chosen octave band.</param>
/// <param name="Rec_ID">the id of the selected receiver.</param>
/// <returns></returns>
public static double[] SPLTCurve_Intensity(Direct_Sound[] Direct, ImageSourceData[] ISData, Environment.Receiver_Bank[] RTData, double CO_Time, int samplerate, int Octave, int Rec_ID, int SrcID, bool Start_at_Zero)
{
double[] Energy = ETCurve(Direct, ISData, RTData, CO_Time, samplerate, Octave, Rec_ID, SrcID, Start_at_Zero);
double[] SPL = new double[Energy.Length];
for (int i = 0; i < Energy.Length; i++)
{
SPL[i] = SPL_Intensity(Energy[i]);
}
return SPL;
}
public static double[] SPLTCurve_Pressure(Direct_Sound[] Direct, ImageSourceData[] ISData, Environment.Receiver_Bank[] RTData, double CO_Time, int samplerate, int Octave, int Rec_ID, int SrcID, bool Start_at_Zero)
{
double[] P;//, Imag;
//double[] Pressure = PTCurve(Direct, ISData, RTData, CO_Time, samplerate, Octave, Rec_ID, SrcID, Start_at_Zero, Numerics.ComplexComponent.Modulus);
PTCurve(Direct, ISData, RTData, CO_Time, samplerate, Rec_ID, SrcID, Start_at_Zero, out P);//, out Imag);
float[] Pressure = new float[P.Length];
//for (int i = 0; i < Pressure.Length; i++) Pressure[i] = Numerics.Abs(Real[i], Imag[i]);
double[] SPL = new double[Pressure.Length];
for (int i = 0; i < Pressure.Length; i++)
{
SPL[i] = SPL_Pressure(Pressure[i]);
}
return SPL;
}
public static double[] SPLTCurve_Intensity(Direct_Sound Direct, ImageSourceData ISData, Environment.Receiver_Bank RTData, double CO_Time, int samplerate, int Octave, int Rec_ID, bool StartAtZero)
{
Direct_Sound[] ArrDirect = new Direct_Sound[1];
ArrDirect[0] = Direct;
ImageSourceData[] ArrIS = new ImageSourceData[1];
ArrIS[0] = ISData;
Environment.Receiver_Bank[] ArrRT = new Environment.Receiver_Bank[1];
ArrRT[0] = RTData;
return SPLTCurve_Intensity(ArrDirect, ArrIS, ArrRT, CO_Time, samplerate, Octave, Rec_ID, 0, StartAtZero);
}
public static double[] SPLTCurve_Pressure(Direct_Sound Direct, ImageSourceData ISData, Environment.Receiver_Bank RTData, double CO_Time, int samplerate, int Octave, int Rec_ID, bool StartAtZero)
{
Direct_Sound[] ArrDirect = new Direct_Sound[1];
ArrDirect[0] = Direct;
ImageSourceData[] ArrIS = new ImageSourceData[1];
ArrIS[0] = ISData;
Environment.Receiver_Bank[] ArrRT = new Environment.Receiver_Bank[1];
ArrRT[0] = RTData;
return SPLTCurve_Pressure(ArrDirect, ArrIS, ArrRT, CO_Time, samplerate, Octave, Rec_ID, 0, StartAtZero);
}
public static double[] ETCurve(Direct_Sound[] Direct, ImageSourceData[] ISData, Environment.Receiver_Bank[] RTData, double CO_Time_ms, int Sampling_Frequency, int Octave, int Rec_ID, List<int> SrcIDs, bool StartAtZero)
{
//TODO: Make provisions for specifying source delays...
//double[] Histogram = new double[(int)(CO_Time * Sampling_Frequency)];
if (Direct == null) Direct = new Direct_Sound[SrcIDs[SrcIDs.Count - 1] + 1];
if (ISData == null) ISData = new ImageSourceData[SrcIDs[SrcIDs.Count - 1] + 1];
if (RTData == null) RTData = new Environment.Receiver_Bank[SrcIDs[SrcIDs.Count - 1] + 1];
double maxdelay = 0;
List<double> delays = new List<double>();
if (Direct[0] != null)
{
foreach (Direct_Sound d in Direct)
{
delays.Add(d.Delay_ms);
maxdelay = Math.Max(maxdelay, d.Delay_ms);
}
}
else if (RTData[0] != null)
{
foreach (Receiver_Bank r in RTData)
{
delays.Add(r.delay_ms);
maxdelay = Math.Max(maxdelay, r.delay_ms);
}
}
maxdelay *= Sampling_Frequency / 1000;
double[] Histogram = new double[(int)(CO_Time_ms * 0.001 * Sampling_Frequency) + 4096 + (int)Math.Ceiling(maxdelay)];
foreach (int s in SrcIDs)
{
double[] IR = ETCurve(Direct, ISData, RTData, CO_Time_ms, Sampling_Frequency, Octave, Rec_ID, s, StartAtZero);
//Array.Resize(ref IR, IR.Length + (int)Math.Ceiling(maxdelay));
//if (IR.Length > Histogram.Length) Array.Resize(ref Histogram, IR.Length);
for (int i = 0; i < IR.Length; i++)
{
Histogram[i + (int)Math.Ceiling(delays[s] / 1000 * Sampling_Frequency)] += IR[i];
}
}
return Histogram;
}
public static double[] PTCurve(Direct_Sound[] Direct, ImageSourceData[] ISData, Environment.Receiver_Bank[] RTData, double CO_Time_ms, int Sampling_Frequency, int Rec_ID, List<int> SrcIDs, bool StartAtZero)
{
//TODO: Make provisions for specifying source delays...
//double[] Ptotal = new double[(int)(CO_Time * Sampling_Frequency)];
//double[] Histogram = new double[(int)(CO_Time * Sampling_Frequency)];
if (Direct == null) Direct = new Direct_Sound[SrcIDs[SrcIDs.Count - 1] + 1];
if (ISData == null) ISData = new ImageSourceData[SrcIDs[SrcIDs.Count - 1] + 1];
if (RTData == null) RTData = new Environment.Receiver_Bank[SrcIDs[SrcIDs.Count - 1] + 1];
double maxdelay = 0;
List<double> delays = new List<double>();
if (Direct[0] != null)
{
foreach (Direct_Sound d in Direct)
{
delays.Add(d.Delay_ms);
maxdelay = Math.Max(maxdelay, d.Delay_ms);
}
}
else if (RTData[0] != null)
{
foreach (Receiver_Bank r in RTData)
{
delays.Add(r.delay_ms);
maxdelay = Math.Max(maxdelay, r.delay_ms);
}
}
maxdelay *= Sampling_Frequency / 1000;
double[] Histogram = new double[(int)(CO_Time_ms * 0.001 * Sampling_Frequency) + 8192 * 2 + (int)Math.Ceiling(maxdelay)];
foreach (int s in SrcIDs)
{
double[] P;
PTCurve(Direct, ISData, RTData, CO_Time_ms, Sampling_Frequency, Rec_ID, s, StartAtZero, out P);
//Array.Resize(ref P, P.Length + (int)Math.Ceiling(maxdelay));
//if (P.Length > Ptotal.Length) Array.Resize(ref Ptotal, P.Length);
for (int i = 0; i < P.Length; i++)
{
Histogram[i + (int)Math.Ceiling(delays[s] / 1000 * Sampling_Frequency)] += P[i];
}
}
return Histogram;
}
public static double[] ETCurve(Direct_Sound Direct, ImageSourceData ISData, Environment.Receiver_Bank RTData, double CO_Time_ms, int samplerate, int Octave, int Rec_ID, bool StartAtZero)
{
Direct_Sound[] ArrDirect = new Direct_Sound[1];
ArrDirect[0] = Direct;
ImageSourceData[] ArrIS = new ImageSourceData[1];
ArrIS[0] = ISData;
Environment.Receiver_Bank[] ArrRT = new Environment.Receiver_Bank[1];
ArrRT[0] = RTData;
return ETCurve(ArrDirect, ArrIS, ArrRT, CO_Time_ms, samplerate, Octave, Rec_ID, 0, StartAtZero);
}
public static double[] PTCurve(Direct_Sound Direct, ImageSourceData ISData, Environment.Receiver_Bank RTData, double CO_Time_ms, int samplerate, int Octave, int Rec_ID, bool StartAtZero, Numerics.ComplexComponent Output_Type)
{
Direct_Sound[] ArrDirect = new Direct_Sound[1];
ArrDirect[0] = Direct;
ImageSourceData[] ArrIS = new ImageSourceData[1];
ArrIS[0] = ISData;
Environment.Receiver_Bank[] ArrRT = new Environment.Receiver_Bank[1];
ArrRT[0] = RTData;
double[] P;
PTCurve(ArrDirect, ArrIS, ArrRT, CO_Time_ms * 0.001, samplerate, Rec_ID, 0, StartAtZero, out P);
double[] Pressure = new double[P.Length];
for (int i = 0; i < Pressure.Length; i++) Pressure[i] = P[i];
return Pressure;
}
/// <summary>
/// Calculates Energy-time curve from simulation output.
/// </summary>
/// <param name="Direct"></param>
/// <param name="ISData"></param>
/// <param name="RTData"></param>
/// <param name="CO_Time"></param>
/// <param name="Sampling_Frequency"></param>
/// <param name="Octave">the chosen octave band.</param>
/// <param name="Rec_ID">the id of the selected receiver.</param>
/// <returns></returns>
public static double[] ETCurve(Direct_Sound[] Direct, ImageSourceData[] ISData, Environment.Receiver_Bank[] RTData, double CO_Time_ms, int Sampling_Frequency, int Octave, int Rec_ID, int Src_ID, bool Start_at_Zero)
{
double[] Histogram = null;
if (RTData[Src_ID] != null)
{
Histogram = RTData[Src_ID].GetEnergyHistogram(Octave, Rec_ID);
}
else
{
Histogram = new double[(int)(CO_Time_ms * 0.001 * Sampling_Frequency)];
}
if (Direct[Src_ID] != null && Direct[Src_ID].IsOccluded(Rec_ID))
{
int D_Start = 0;
if (!Start_at_Zero) D_Start = (int)Math.Ceiling(Direct[Src_ID].Time(Rec_ID) * Sampling_Frequency);
for (int i = 0; i < Direct[Src_ID].Io[Rec_ID].GetLength(0); i++)
{
double DirectValue = 0;
switch (Octave)
{
case 8:
DirectValue = Direct[Src_ID].EnergySum(Rec_ID, i);
break;
default:
DirectValue = Direct[Src_ID].EnergyValue(Octave, Rec_ID)[i];
break;
}
Histogram[D_Start + i] += DirectValue;
}
}
if (ISData[Src_ID] != null)
{
switch (Octave)
{
case 8:
foreach (Deterministic_Reflection value in ISData[Src_ID].Paths[Rec_ID])
{
if (Math.Ceiling(Sampling_Frequency * value.TravelTime) < Histogram.Length - 1)
{
for (int oct = 0; oct < 8; oct++)
{
double[] e = value.Energy(oct);
for (int t = 0; t < e.Length; t++) Histogram[(int)Math.Ceiling(Sampling_Frequency * value.TravelTime) + t] += e[t];
}
}
}
break;
default:
foreach (Deterministic_Reflection value in ISData[Src_ID].Paths[Rec_ID])
{
if (Math.Ceiling(Sampling_Frequency * value.TravelTime) < Histogram.Length - 1)
{
double[] e = value.Energy(Octave);
for (int t = 0; t < e.Length; t++) Histogram[(int)Math.Ceiling(Sampling_Frequency * value.TravelTime) + t] += e[t];
}
}
break;
}
}
return Histogram;
}
/// <summary>
/// Calculates pressure impulse response from simulation output.
/// </summary>
/// <param name="Direct"></param>
/// <param name="ISData"></param>
/// <param name="RTData"></param>
/// <param name="CO_Time"></param>
/// <param name="Sampling_Frequency"></param>
/// <param name="Octave">the chosen octave band.</param>
/// <param name="Rec_ID">the id of the selected receiver.</param>
/// <returns></returns>
public static void PTCurve(Direct_Sound[] Direct, ImageSourceData[] ISData, Environment.Receiver_Bank[] RTData, double CO_Time_ms, int Sampling_Frequency, int Rec_ID, int Src_ID, bool Start_at_Zero, out double[] P)
{
if (RTData[Src_ID] != null)
{
RTData[Src_ID].GetPressure(Rec_ID, out P);//8,
}
else
{
P = new double[(int)(CO_Time_ms * 0.001 * Sampling_Frequency)];
}
if (Direct[Src_ID] != null && Direct[Src_ID].IsOccluded(Rec_ID))
{
int D_Start = 0;
if (!Start_at_Zero) D_Start = (int)Math.Ceiling(Direct[Src_ID].Time(Rec_ID) * Sampling_Frequency);
for (int i = 0; i < Direct[Src_ID].P[Rec_ID].GetLength(0); i++)
{
P[D_Start + i] += Direct[Src_ID].P[Rec_ID][i];
}
}
if (ISData[Src_ID] != null)
{
foreach (Deterministic_Reflection value in ISData[Src_ID].Paths[Rec_ID])
{
if (Math.Ceiling(Sampling_Frequency * value.TravelTime) < P.Length - 1)
{
int end = value.Pressure.Length < P.Length - (int)Math.Ceiling(Sampling_Frequency * value.TravelTime) ? value.Pressure.Length : P.Length - (int)Math.Ceiling(Sampling_Frequency * value.TravelTime);
for (int t = 0; t < end; t++) P[(int)Math.Ceiling(Sampling_Frequency * value.TravelTime) + t] += (float)value.Pressure[t];
}
}
}
}
public static double[][] ETCurve_1d_Tight(IEnumerable<Direct_Sound> Direct, IEnumerable<ImageSourceData> ISData, IEnumerable<Environment.Receiver_Bank> RTData, double CO_Time_ms, int Sampling_Frequency, int Octave, int Rec_ID, List<int> SrcIDs, bool StartAtZero, double alt, double azi, bool degrees)
{
//TODO: Make provisions for specifying source delays...
double[][] Histogram = new double[3][];
if (Direct == null) Direct = new Direct_Sound[SrcIDs[SrcIDs.Count - 1] + 1];
if (ISData == null) ISData = new ImageSourceData[SrcIDs[SrcIDs.Count - 1] + 1];
if (RTData == null) RTData = new Environment.Receiver_Bank[SrcIDs[SrcIDs.Count - 1] + 1];
double maxdelay = 0;
List<double> delays = new List<double>();
if ((Direct as List<Direct_Sound>)[0] != null)
{
foreach (Direct_Sound d in Direct)
{
delays.Add(d.Delay_ms);
maxdelay = Math.Max(maxdelay, d.Delay_ms);
}
}
else if ((RTData as List<Receiver_Bank>)[0] != null)
{
foreach (Receiver_Bank r in RTData)
{
delays.Add(r.delay_ms);
maxdelay = Math.Max(maxdelay, r.delay_ms);
}
}
maxdelay *= Sampling_Frequency / 1000;
Histogram[0] = new double[(int)(CO_Time_ms * 0.001 * Sampling_Frequency) + 4096 + (int)Math.Ceiling(maxdelay)];
Histogram[1] = new double[(int)(CO_Time_ms * 0.001 * Sampling_Frequency) + 4096 + (int)Math.Ceiling(maxdelay)];
Histogram[2] = new double[(int)(CO_Time_ms * 0.001 * Sampling_Frequency) + 4096 + (int)Math.Ceiling(maxdelay)];
foreach (int s in SrcIDs)
{
double[][] IR = ETCurve_1d_Tight((Direct as List<Direct_Sound>)[s], (ISData as List<ImageSourceData>)[s], (RTData as List<Receiver_Bank>)[s], CO_Time_ms, Sampling_Frequency, Octave, Rec_ID, StartAtZero, alt, azi, degrees);
//Array.Resize(ref IR, IR.Length + (int)Math.Ceiling(maxdelay));
for (int d = 0; d < 3; d++)
{
for (int i = 0; i < IR[0].Length; i++)
{
Histogram[d][i + (int)Math.Ceiling(delays[s] / 1000 * Sampling_Frequency)] += IR[d][i];
}
}
}
return Histogram;
}
public static double[][] ETCurve_1d_Tight(Direct_Sound Direct, ImageSourceData ISData, Receiver_Bank RTData, double CO_Time_ms, int Sampling_Frequency, int Octave, int Rec_ID, bool Start_at_Zero, double alt, double azi, bool degrees)
{
double[][] Histogram = new double[3][];
Histogram[0] = new double[(int)(CO_Time_ms * 0.001 * Sampling_Frequency)];
Histogram[1] = new double[(int)(CO_Time_ms * 0.001 * Sampling_Frequency)];
Histogram[2] = new double[(int)(CO_Time_ms * 0.001 * Sampling_Frequency)];
if (RTData != null)
{
for (int i = 0; i < Histogram[0].Length; i++)
{
Hare.Geometry.Vector Vpos = RTData.Directions_Pos(Octave, i, Rec_ID, alt, azi, degrees);
Hare.Geometry.Vector Vneg = RTData.Directions_Neg(Octave, i, Rec_ID, alt, azi, degrees);
Hare.Geometry.Vector VTot = new Hare.Geometry.Vector(-Math.Abs(Vpos.x) + Math.Abs(Vneg.x), -Math.Abs(Vpos.y) + Math.Abs(Vneg.y), -Math.Abs(Vpos.z) + Math.Abs(Vneg.z));
//double E = VTot.Length();
//if (E != 0)
//{
//VTot.x /= E;
//VTot.y /= E;
//VTot.z /= E;
//VTot.x *= Math.Sqrt(E);
//VTot.y *= Math.Sqrt(E);
//VTot.z *= Math.Sqrt(E);
//Histogram[0][i] = Math.Abs(VTot.x * VTot.x);
//Histogram[1][i] = Math.Abs(VTot.y * VTot.y);
//Histogram[2][i] = Math.Abs(VTot.z * VTot.z);
//}
Histogram[0][i] = Math.Abs(VTot.x);
Histogram[1][i] = Math.Abs(VTot.y);
Histogram[2][i] = Math.Abs(VTot.z);
}
}
if (Direct != null && Direct.IsOccluded(Rec_ID))
{
int D_Start = 0;
if (!Start_at_Zero) D_Start = (int)Math.Ceiling(Direct.Time(Rec_ID) * Sampling_Frequency);
Hare.Geometry.Vector[] DirectValue;
switch (Octave)
{
case 8:
DirectValue = Direct.Dir_Energy_Sum(Rec_ID, alt, azi, degrees);
break;
default:
DirectValue = Direct.Dir_Energy(Octave, Rec_ID, alt, azi, degrees);
break;
}
for (int i = 0; i < DirectValue.Length; i++)
{
//double E = DirectValue[i].Length();
//Hare.Geometry.Vector Vtot = new Hare.Geometry.Vector(DirectValue[i].x / E * Math.Sqrt(E), DirectValue[i].y / E * Math.Sqrt(E), DirectValue[i].z / E * Math.Sqrt(E));
Histogram[0][D_Start + i] += DirectValue[i].x;// * DirectValue[i].x / E);
Histogram[1][D_Start + i] += DirectValue[i].y;// * DirectValue[i].y / E);
Histogram[2][D_Start + i] += DirectValue[i].z;// * DirectValue[i].z / E);
}
}
if (ISData != null)
{
switch (Octave)
{
case 8:
foreach (Deterministic_Reflection value in ISData.Paths[Rec_ID])
{
if (Math.Ceiling(Sampling_Frequency * value.TravelTime) < Histogram[0].Length - 1)
{
Hare.Geometry.Vector[] E_Sum = value.Dir_EnergySum(alt, azi, degrees);
for (int i = 0; i < E_Sum.Length; i++)
{
//double E = E_Sum[i].Length();
//Hare.Geometry.Vector Vtot = new Hare.Geometry.Vector(E_Sum[i].x / E * Math.Sqrt(E), E_Sum[i].y / E * Math.Sqrt(E), E_Sum[i].z / E * Math.Sqrt(E));
Histogram[0][(int)Math.Ceiling(Sampling_Frequency * value.TravelTime + i / Sampling_Frequency)] += E_Sum[i].x;// E_Sum[i].x;// * E_Sum[i].x / E);
Histogram[1][(int)Math.Ceiling(Sampling_Frequency * value.TravelTime + i / Sampling_Frequency)] += E_Sum[i].y;// E_Sum[i].y;// * E_Sum[i].y / E);
Histogram[2][(int)Math.Ceiling(Sampling_Frequency * value.TravelTime + i / Sampling_Frequency)] += E_Sum[i].z;// E_Sum[i].z;// * E_Sum[i].z / E);
}
}
}
break;
default:
foreach (Deterministic_Reflection value in ISData.Paths[Rec_ID])
{
if (Math.Ceiling(Sampling_Frequency * value.TravelTime) < Histogram[0].Length - 1)
{
Hare.Geometry.Vector[] E_Dir = value.Dir_Energy(Octave, alt, azi, degrees);
for (int i = 0; i < E_Dir.Length; i++)
{
//double E = E_Dir[i].Length();
//Hare.Geometry.Vector Vtot = new Hare.Geometry.Vector(E_Dir[i].x / E * Math.Sqrt(E), E_Dir[i].y / E * Math.Sqrt(E), E_Dir[i].z / E * Math.Sqrt(E));
Histogram[0][(int)Math.Ceiling(Sampling_Frequency * value.TravelTime + i / Sampling_Frequency)] += E_Dir[i].x;// * E_Dir[i].x / E);
Histogram[1][(int)Math.Ceiling(Sampling_Frequency * value.TravelTime + i / Sampling_Frequency)] += E_Dir[i].y;// * E_Dir[i].y / E);
Histogram[2][(int)Math.Ceiling(Sampling_Frequency * value.TravelTime + i / Sampling_Frequency)] += E_Dir[i].z;// * E_Dir[i].z / E);
}
}
}
break;
}
}
for (int i = 0; i < Histogram.Length; i++)
{
for (int j = 0; j < Histogram[i].Length; j++)
{
Histogram[i][j] = Math.Abs(Histogram[i][j]);
}
}
return Histogram;
}
public static double[][] ETCurve_1d(IEnumerable<Direct_Sound> Direct, IEnumerable<ImageSourceData> ISData, IEnumerable<Environment.Receiver_Bank> RTData, double CO_Time_ms, int Sampling_Frequency, int Octave, int Rec_ID, List<int> SrcIDs, bool StartAtZero, double alt, double azi, bool degrees)
{
//TODO: Make provisions for specifying source delays...
double[][] Histogram = new double[3][];
if (Direct == null) Direct = new Direct_Sound[SrcIDs[SrcIDs.Count - 1] + 1];
if (ISData == null) ISData = new ImageSourceData[SrcIDs[SrcIDs.Count - 1] + 1];
if (RTData == null) RTData = new Environment.Receiver_Bank[SrcIDs[SrcIDs.Count - 1] + 1];
double maxdelay = 0;
List<double> delays = new List<double>();
if ((Direct as List<Direct_Sound>)[0] != null)
{
foreach (Direct_Sound d in Direct)
{
delays.Add(d.Delay_ms);
maxdelay = Math.Max(maxdelay, d.Delay_ms);
}
}
else if ((RTData as List<Receiver_Bank>)[0] != null)
{
foreach (Receiver_Bank r in RTData)
{
delays.Add(r.delay_ms);
maxdelay = Math.Max(maxdelay, r.delay_ms);
}
}
maxdelay *= Sampling_Frequency / 1000;
Histogram[0] = new double[(int)(CO_Time_ms * 0.001 * Sampling_Frequency) + 4096 + (int)Math.Ceiling(maxdelay)];
Histogram[1] = new double[(int)(CO_Time_ms * 0.001 * Sampling_Frequency) + 4096 + (int)Math.Ceiling(maxdelay)];
Histogram[2] = new double[(int)(CO_Time_ms * 0.001 * Sampling_Frequency) + 4096 + (int)Math.Ceiling(maxdelay)];
foreach (int s in SrcIDs)
{
double[][] IR = ETCurve_1d((Direct as List<Direct_Sound>)[s], (ISData as List<ImageSourceData>)[s], (RTData as List<Receiver_Bank>)[s], CO_Time_ms, Sampling_Frequency, Octave, Rec_ID, StartAtZero, alt, azi, degrees);
//Array.Resize(ref IR, IR.Length + (int)Math.Ceiling(maxdelay));
for (int d = 0; d < 3; d++)
{
for (int i = 0; i < IR[0].Length; i++)
{
Histogram[d][i + (int)Math.Ceiling(delays[s] / 1000 * Sampling_Frequency)] += IR[d][i];
}
}
}
return Histogram;
}
public static double[][] ETCurve_1d(Direct_Sound Direct, ImageSourceData ISData, Receiver_Bank RTData, double CO_Time_ms, int Sampling_Frequency, int Octave, int Rec_ID, bool Start_at_Zero, double alt, double azi, bool degrees)
{
double[][] Histogram = new double[3][];
Histogram[0] = new double[(int)(CO_Time_ms * 0.001 * Sampling_Frequency)];
Histogram[1] = new double[(int)(CO_Time_ms * 0.001 * Sampling_Frequency)];
Histogram[2] = new double[(int)(CO_Time_ms * 0.001 * Sampling_Frequency)];
if (RTData != null)
{
for (int i = 0; i < Histogram[0].Length; i++)
{
Hare.Geometry.Vector Vpos = RTData.Directions_Pos(Octave, i, Rec_ID, alt, azi, degrees);
Hare.Geometry.Vector Vneg = RTData.Directions_Neg(Octave, i, Rec_ID, alt, azi, degrees);
double E = RTData.Rec_List[Rec_ID].Energy(i, Octave);
Hare.Geometry.Vector VTot = new Hare.Geometry.Vector(Math.Abs(Vpos.x) - Math.Abs(Vneg.x), Math.Abs(Vpos.y) - Math.Abs(Vneg.y), Math.Abs(Vpos.z) - Math.Abs(Vneg.z));
VTot.Normalize();
VTot *= E;
Histogram[0][i] = VTot.x;
Histogram[1][i] = VTot.y;
Histogram[2][i] = VTot.z;
}
}
if (Direct != null && Direct.IsOccluded(Rec_ID))
{
int D_Start = 0;
if (!Start_at_Zero) D_Start = (int)Math.Ceiling(Direct.Time(Rec_ID) * Sampling_Frequency);
Hare.Geometry.Vector[] DirectValue;
switch (Octave)
{
case 8:
DirectValue = Direct.Dir_Energy_Sum(Rec_ID, alt, azi, degrees);
break;
default:
DirectValue = Direct.Dir_Energy(Octave, Rec_ID, alt, azi, degrees);
break;
}
for (int i = 0; i < DirectValue.Length; i++)
{
Histogram[0][D_Start + i] += Math.Abs(DirectValue[i].x);
Histogram[1][D_Start + i] += Math.Abs(DirectValue[i].y);
Histogram[2][D_Start + i] += Math.Abs(DirectValue[i].z);
}
}
if (ISData != null)
{
switch (Octave)
{
case 8:
foreach (Deterministic_Reflection value in ISData.Paths[Rec_ID])
{
if (Math.Ceiling(Sampling_Frequency * value.TravelTime) < Histogram[0].Length - 1)
{
Hare.Geometry.Vector[] E_Sum = value.Dir_EnergySum(alt, azi, degrees);
for (int i = 0; i < E_Sum.Length; i++)
{
Histogram[0][(int)Math.Ceiling(Sampling_Frequency * value.TravelTime + i / Sampling_Frequency)] += Math.Abs(E_Sum[i].x);
Histogram[1][(int)Math.Ceiling(Sampling_Frequency * value.TravelTime + i / Sampling_Frequency)] += Math.Abs(E_Sum[i].y);
Histogram[2][(int)Math.Ceiling(Sampling_Frequency * value.TravelTime + i / Sampling_Frequency)] += Math.Abs(E_Sum[i].z);
}
}
}
break;
default:
foreach (Deterministic_Reflection value in ISData.Paths[Rec_ID])
{
if (Math.Ceiling(Sampling_Frequency * value.TravelTime) < Histogram[0].Length - 1)
{
Hare.Geometry.Vector[] E_Dir = value.Dir_Energy(Octave, alt, azi, degrees);
for (int i = 0; i < E_Dir.Length; i++)
{
Histogram[0][(int)Math.Ceiling(Sampling_Frequency * value.TravelTime + i / Sampling_Frequency)] += Math.Abs(E_Dir[i].x);
Histogram[1][(int)Math.Ceiling(Sampling_Frequency * value.TravelTime + i / Sampling_Frequency)] += Math.Abs(E_Dir[i].y);
Histogram[2][(int)Math.Ceiling(Sampling_Frequency * value.TravelTime + i / Sampling_Frequency)] += Math.Abs(E_Dir[i].z);
}
}
}
break;
}
}
return Histogram;
}
public static double[] ETCurve_Directional(IEnumerable<Direct_Sound> Direct, IEnumerable<ImageSourceData> ISData, IEnumerable<Environment.Receiver_Bank> RTData, double CO_Time_ms, int Sampling_Frequency, int Octave, int Rec_ID, List<int> SrcIDs, bool StartAtZero, double alt, double azi, bool degrees)
{
//TODO: Make provisions for specifying source delays...
//double[] Histogram = new double[(int)(CO_Time * Sampling_Frequency)];
if (Direct == null) Direct = new Direct_Sound[SrcIDs[SrcIDs.Count - 1] + 1];
if (ISData == null) ISData = new ImageSourceData[SrcIDs[SrcIDs.Count - 1] + 1];
if (RTData == null) RTData = new Environment.Receiver_Bank[SrcIDs[SrcIDs.Count - 1] + 1];
double maxdelay = 0;
List<double> delays = new List<double>();
if ((Direct as List<Direct_Sound>)[0] != null)
{
foreach (Direct_Sound d in Direct)
{
delays.Add(d.Delay_ms);
maxdelay = Math.Max(maxdelay, d.Delay_ms);
}
}
else if ((RTData as List<Receiver_Bank>)[0] != null)
{
foreach (Receiver_Bank r in RTData)
{
delays.Add(r.delay_ms);
maxdelay = Math.Max(maxdelay, r.delay_ms);
}
}
maxdelay *= Sampling_Frequency / 1000;
double[] Histogram = new double[(int)(CO_Time_ms * 0.001 * Sampling_Frequency) + 4096 + (int)Math.Ceiling(maxdelay)];
foreach (int s in SrcIDs)
{
double[] IR = ETCurve_Directional((Direct as List<Direct_Sound>)[s], (ISData as List<ImageSourceData>)[s], (RTData as List<Receiver_Bank>)[s], CO_Time_ms, Sampling_Frequency, Octave, Rec_ID, StartAtZero, alt, azi, degrees);
//Array.Resize(ref IR, IR.Length + (int)Math.Ceiling(maxdelay));
//if (IR.Length > Histogram.Length) Array.Resize(ref Histogram, IR.Length);
for (int i = 0; i < IR.Length; i++)
{
Histogram[i + (int)Math.Ceiling(delays[s] / 1000 * Sampling_Frequency)] += IR[i];
}
}
return Histogram;
}
public static double[] ETCurve_Directional(Direct_Sound Direct, ImageSourceData ISData, Receiver_Bank RTData, double CO_Time_ms, int Sampling_Frequency, int Octave, int Rec_ID, bool Start_at_Zero, double alt, double azi, bool degrees)
{
double[] Histogram = new double[(int)(CO_Time_ms * 0.001 * Sampling_Frequency)];
if (RTData != null)
{
for (int i = 0; i < Histogram.Length; i++)
{
Hare.Geometry.Vector Vpos = RTData.Directions_Pos(Octave, i, Rec_ID, alt, azi, degrees);
Hare.Geometry.Vector Vneg = RTData.Directions_Neg(Octave, i, Rec_ID, alt, azi, degrees);
double E = RTData.Rec_List[Rec_ID].Energy(i, Octave);
Hare.Geometry.Vector VTot = new Hare.Geometry.Vector(Math.Abs(Vpos.x) - Math.Abs(Vneg.x), Math.Abs(Vpos.y) - Math.Abs(Vneg.y), Math.Abs(Vpos.z) - Math.Abs(Vneg.z));
if (Vpos.x > 0)
{
Histogram[i] += Math.Abs(Vpos.x);
}
if (Vneg.x > 0)
{
Histogram[i] += Math.Abs(Vneg.x);
}
double L = VTot.Length();
if (L > 0) Histogram[i] *= E / L;
//if (AcousticalMath.SPL_Intensity(Histogram[i]) > 200)
//{
// Rhino.RhinoApp.Write("Super high SPLs... what's going on, man?");
//}
}
}
if (Direct != null && Direct.IsOccluded(Rec_ID))
{
int D_Start = 0;
if (!Start_at_Zero) D_Start = (int)Math.Ceiling(Direct.Time(Rec_ID) * Sampling_Frequency);
Hare.Geometry.Vector[] DirectValue;
switch (Octave)
{
case 8:
DirectValue = Direct.Dir_Energy_Sum(Rec_ID, alt, azi, degrees);
break;
default:
DirectValue = Direct.Dir_Energy(Octave, Rec_ID, alt, azi, degrees);
break;
}
for (int i = 0; i < DirectValue.Length; i++)
{
if (DirectValue[i].x > 0) Histogram[D_Start + i] += Math.Abs(DirectValue[i].x);
}
}
if (ISData != null)
{
switch (Octave)
{
case 8:
foreach (Deterministic_Reflection value in ISData.Paths[Rec_ID])
{
if (Math.Ceiling(Sampling_Frequency * value.TravelTime) < Histogram.Length - 1)
{
Hare.Geometry.Vector[] E_Sum = value.Dir_EnergySum(alt, azi, degrees);
for (int i = 0; i < E_Sum.Length; i++)
{
if (E_Sum[i].x > 0) Histogram[(int)Math.Ceiling(Sampling_Frequency * value.TravelTime + i)] += Math.Abs(E_Sum[i].x);
}
}
}
break;
default:
foreach (Deterministic_Reflection value in ISData.Paths[Rec_ID])
{
if (Math.Ceiling(Sampling_Frequency * value.TravelTime) < Histogram.Length - 1)
{
Hare.Geometry.Vector[] E_Dir = value.Dir_Energy(Octave, alt, azi, degrees);
for (int i = 0; i < E_Dir.Length; i++)
{
if (E_Dir[i].x > 0) Histogram[(int)Math.Ceiling(Sampling_Frequency * value.TravelTime + i)] += Math.Abs(E_Dir[i].x);
}
}
}
break;
}
}
return Histogram;
}
public static double[][] PTCurve_Ambisonics2(IEnumerable<Direct_Sound> Direct, IEnumerable<ImageSourceData> ISData, IEnumerable<Environment.Receiver_Bank> RTData, double CO_Time_ms, int Sampling_Frequency, int Rec_ID, List<int> SrcIDs, bool StartAtZero, double alt, double azi, bool degrees)
{
//TODO: Make provisions for specifying source delays...
double[][] Histogram = new double[5][];
//Histogram[0] = new double[(int)(CO_Time * Sampling_Frequency)];
//Histogram[1] = new double[(int)(CO_Time * Sampling_Frequency)];
//Histogram[2] = new double[(int)(CO_Time * Sampling_Frequency)];
//Histogram[3] = new double[(int)(CO_Time * Sampling_Frequency)];
//Histogram[4] = new double[(int)(CO_Time * Sampling_Frequency)];
if (Direct == null) Direct = new Direct_Sound[SrcIDs[SrcIDs.Count - 1] + 1];
if (ISData == null) ISData = new ImageSourceData[SrcIDs[SrcIDs.Count - 1] + 1];
if (RTData == null) RTData = new Environment.Receiver_Bank[SrcIDs[SrcIDs.Count - 1] + 1];
double maxdelay = 0;
List<double> delays = new List<double>();
if ((Direct as List<Direct_Sound>)[0] != null)
{
foreach (Direct_Sound d in Direct)
{
delays.Add(d.Delay_ms);
maxdelay = Math.Max(maxdelay, d.Delay_ms);
}
}
else if ((RTData as List<Receiver_Bank>)[0] != null)
{
foreach (Receiver_Bank r in RTData)
{
delays.Add(r.delay_ms);
maxdelay = Math.Max(maxdelay, r.delay_ms);
}
}
maxdelay *= Sampling_Frequency / 1000;
Histogram[0] = new double[(int)(CO_Time_ms * 0.001 * Sampling_Frequency) + 4096 + (int)Math.Ceiling(maxdelay)];
Histogram[1] = new double[(int)(CO_Time_ms * 0.001 * Sampling_Frequency) + 4096 + (int)Math.Ceiling(maxdelay)];
Histogram[2] = new double[(int)(CO_Time_ms * 0.001 * Sampling_Frequency) + 4096 + (int)Math.Ceiling(maxdelay)];
Histogram[3] = new double[(int)(CO_Time_ms * 0.001 * Sampling_Frequency) + 4096 + (int)Math.Ceiling(maxdelay)];
Histogram[4] = new double[(int)(CO_Time_ms * 0.001 * Sampling_Frequency) + 4096 + (int)Math.Ceiling(maxdelay)];
foreach (int s in SrcIDs)
{
double[][] IR = PTCurve_Ambisonics2((Direct as List<Direct_Sound>)[s], (ISData as List<ImageSourceData>)[s], (RTData as List<Receiver_Bank>)[s], CO_Time_ms, Sampling_Frequency, Rec_ID, StartAtZero, alt, azi, degrees);
//Array.Resize(ref IR, IR.Length + (int)Math.Ceiling(maxdelay));
//if (IR.Length > Histogram.Length) Array.Resize(ref Histogram, IR.Length);
for (int d = 0; d < IR.Length; d++)
{
for (int i = 0; i < IR[0].Length; i++)
{
Histogram[d][i + (int)Math.Ceiling(delays[s] / 1000 * Sampling_Frequency)] += IR[d][i];
}
}
}
return Histogram;
}