///<summary>
/// Sabine Reverberation Time : T60 = 0.161V/ln(1-a)S
///</summary>
public static void Eyring(Environment.Scene Room, double volume, ref double[] T60)
{
T60 = new double[8];
if (Room == null) return;
double TA;
for (int t = 0; t <= 7; t++)
{
TA = 0;
for (int q = 0; q <= Room.Count() - 1; q++)
{
TA += (Room.SurfaceArea(q) * (-System.Math.Log(1 - Room.AbsorptionValue[q].Coefficient_A_Broad(t),System.Math.E)));
}
T60[t] = 0.161 * volume / (TA + 4 * Room.Attenuation(0)[t] * volume);
}
}
public VoxelGrid_RC(Environment.RhCommon_Scene ModelSurfaces, List<Point3d> Pts, int VG_Domain)
{
VoxelCT = VG_Domain;
VoxelInventory = new List<int>[VoxelCT, VoxelCT, VoxelCT];
Voxel = new List<Point3d>[VoxelCT, VoxelCT, VoxelCT];
//for (int q = 0; q < ModelSurfaces.Objects.Count; q++)
//{
// Surfaces[q] = ModelSurfaces.Objects[q].Object();
//}
BoundingBox TightOBox = new BoundingBox();
Point3d BoxMin = new Point3d();
Point3d BoxMax = new Point3d();
foreach (Point3d Pt in Pts)
{
TightOBox.Union(Pt);
}
foreach (Brep B in ModelSurfaces.Breps())
{
TightOBox.Union(B.GetBoundingBox(true));
}
OverallBBox = new BoundingBox(new Point3d(TightOBox.Min.X - 1, TightOBox.Min.Y - 1, TightOBox.Min.Z - 1), new Point3d(TightOBox.Max.X + 1, TightOBox.Max.Y + 1, TightOBox.Max.Z + 1));
this.X_Incr = (OverallBBox.Max.X - OverallBBox.Min.X) / VoxelCT;
this.Y_Incr = (OverallBBox.Max.Y - OverallBBox.Min.Y) / VoxelCT;
this.Z_Incr = (OverallBBox.Max.Z - OverallBBox.Min.Z) / VoxelCT;
double X_2 = X_Incr/2;
double Y_2 = Y_Incr/2;
double Z_2 = Z_Incr/2;
Radius2 = X_2*X_2 + Y_2*Y_2 + Z_2*Z_2;
//For((int XBox = 0; XBox < VoxelCT; XBox++)
Parallel.For(0, VoxelCT, XBox =>
{
Rhino.RhinoApp.SetCommandPrompt(string.Format("Voxelizing: {0}%", Math.Round((double)XBox / VoxelCT - 1, 2) * 100));
for (int YBox = 0; YBox < VoxelCT; YBox++)
{
for (int ZBox = 0; ZBox < VoxelCT; ZBox++)
{
BoxMin = new Point3d((OverallBBox.Min.X + this.X_Incr * XBox) - X_Incr / 10, (OverallBBox.Min.Y + this.Y_Incr * YBox) - Y_Incr / 10, (OverallBBox.Min.Z + this.Z_Incr * ZBox) - Z_Incr / 10);
BoxMax = new Point3d((OverallBBox.Min.X + this.X_Incr * (XBox + 1)) + X_Incr / 10, (OverallBBox.Min.Y + this.Y_Incr * (YBox + 1)) + Y_Incr / 10, (OverallBBox.Min.Z + this.Z_Incr * (ZBox + 1)) + X_Incr / 10);
this.Voxel[XBox, YBox, ZBox] = new List<Point3d>();
this.Voxel[XBox, YBox, ZBox].Add(BoxMin);
this.Voxel[XBox, YBox, ZBox].Add(BoxMax);
this.VoxelInventory[XBox, YBox, ZBox] = new List<int>();
for (int Index = 0; Index < ModelSurfaces.Count(); Index++)
{
BoundingBox TestBox = new BoundingBox();
TestBox = new BoundingBox(this.Voxel[XBox, YBox, ZBox][0], this.Voxel[XBox, YBox, ZBox][1]);
if (BoxIntersection(ModelSurfaces, TestBox, Index))
{
this.VoxelInventory[XBox, YBox, ZBox].Add(Index);
}
}
}
}
});
}
///<summary>
/// Sabine Reverberation Time : T60 = 0.161V/A
///</summary>
public static void Sabine(Environment.Scene Room, double volume, ref double[] T60)
{
T60 = new double[8];
if (Room == null) return;
double TA;
for (int t = 0; t <= 7; t++)
{
TA = 0;
for (int q = 0; q <= Room.Count() - 1; q++)
{
TA += (Room.SurfaceArea(q) * Room.AbsorptionValue[q].Coefficient_A_Broad(t));
}
T60[t] = (0.161 * (volume / (TA + (4 * Room.Attenuation(0)[t] * volume))));
}
}
