// Compute Slow prices per Gunther's notes
internal static void MakeSlowPrices(ref AllTable[] bands, SlowPriceParam spp, int startRow, int endRow, out string[] auditSummary)
{
auditSummary = new string[] { };
int numBands = endRow - startRow + 1; // normally 1040 bands = 10 days
if (numBands > 0)
{
//init slow prices to 1 in the starting row
bands[startRow].SPa = 1; bands[startRow].SPb = 1; bands[startRow].SPc = 1; bands[startRow].SPd = 1;
for (int f = startRow + 1; f <= endRow; f++)
{
//SPa,Ya
if (bands[f].FP >= bands[f - 1].SPa)
{
bands[f].SPa = bands[f - 1].SPa + Math.Pow(spp.Z * (bands[f].FP - bands[f - 1].SPa), spp.Ya) / spp.Z; //Z wont be zero
}
else
{
bands[f].SPa = bands[f - 1].SPa - Math.Pow(spp.Z * (bands[f - 1].SPa - bands[f].FP), spp.Ya) / spp.Z;
}
//SPb,Yb
if (bands[f].FP >= bands[f - 1].SPb)
{
bands[f].SPb = bands[f - 1].SPb + Math.Pow(spp.Z * (bands[f].FP - bands[f - 1].SPb), spp.Yb) / spp.Z; //Z wont be zero
}
else
{
bands[f].SPb = bands[f - 1].SPb - Math.Pow(spp.Z * (bands[f - 1].SPb - bands[f].FP), spp.Yb) / spp.Z;
}
//SPc,Yc
if (bands[f].FP >= bands[f - 1].SPc)
{
bands[f].SPc = bands[f - 1].SPc + Math.Pow(spp.Z * (bands[f].FP - bands[f - 1].SPc), spp.Yc) / spp.Z; //Z wont be zero
}
else
{
bands[f].SPc = bands[f - 1].SPc - Math.Pow(spp.Z * (bands[f - 1].SPc - bands[f].FP), spp.Yc) / spp.Z;
}
//SPd,Yd
if (bands[f].FP >= bands[f - 1].SPd)
{
bands[f].SPd = bands[f - 1].SPd + Math.Pow(spp.Z * (bands[f].FP - bands[f - 1].SPd), spp.Yd) / spp.Z; //Z wont be zero
}
else
{
bands[f].SPd = bands[f - 1].SPd - Math.Pow(spp.Z * (bands[f - 1].SPd - bands[f].FP), spp.Yd) / spp.Z;
}
}
auditSummary = $"MakeSlowPrices results:\n{numBands} processed\nInspect the view.".Split('\n');
}
else
{
auditSummary = $"MakeSlowPrices: No bands to work with".Split('\n');
}
}
// CALCULATION HANDLING
internal static PropertyGrid PropertyGridParams(SlowPriceParam param, int height)
{
var pg = new PropertyGrid();
pg.ToolbarVisible = false;
pg.PropertySort = PropertySort.NoSort;
pg.Size = new Size(150, height);
pg.Location = new Point(20, 12);
pg.SelectedObject = param;
pg.PropertyValueChanged += OnParamSettingChange;
return(pg);
}