short[] ComputeMean(int idx)
{
int left = 0;
int right = 0;
ArrayList listUnmuted = GetUnmutedItems();
int num = listUnmuted.Count;
double factorL = 0;
double factorR = 0;
for (int i = 0; i < num; i++)
{
try
{
WavData item = ((ItemSet)listUnmuted[i]).GetData();
left += item.GetLeft(idx);
right += item.GetRight(idx);
factorL += Math.Abs(item.GetFactor(idx, WavData.LEFT));
factorR += Math.Abs(item.GetFactor(idx, WavData.RIGHT));
}
catch (ArgumentOutOfRangeException)
{
// sometimes thrown when item removed while playing
// can be ignored
}
catch (NullReferenceException)
{
continue;
}
}
if (factorL == 0 && factorR == 0 && avoidAllMute)
{
WavData item = GetLastItem().GetData();
item.IsDefault = true;
left = item.GetLeft(idx);
right = item.GetRight(idx);
item.IsDefault = false;
factorL = 1;
factorR = 1;
}
short newLeft, newRight;
if (factorL > 1 || normalize)
{
newLeft = ToShortDevidedBy(left, factorL);
}
else
{
newLeft = Convert.ToInt16(left);
}
if (factorR > 1 || normalize)
{
newRight = ToShortDevidedBy(right, factorR);;
}
else
{
newRight = Convert.ToInt16(right);
}
return(new short[] { newLeft, newRight });
}
void PaintMask(object sender, PaintEventArgs e)
{
Graphics g = e.Graphics;
double[] sumfac = ic.ComputeFactorSum(true);
double factorL = Math.Abs(wd.GetFactor(0, WavData.LEFT));
double factorR = Math.Abs(wd.GetFactor(0, WavData.RIGHT));
int alphaL = FactorToAlpha(factorL / sumfac[0]);
int alphaR = FactorToAlpha(factorR / sumfac[1]);
Color color = Color.FromArgb(alphaL, mainPanelBack);
Brush b = new SolidBrush(color);
g.FillRectangle(b, 0, 0, 64, 128);
color = Color.FromArgb(alphaR, mainPanelBack);
b = new SolidBrush(color);
g.FillRectangle(b, 64, 0, 128, 128);
Font fnt = new System.Drawing.Font("Meiryo UI", 15, FontStyle.Bold);;
g.DrawString(myKey.ToString(), fnt, Brushes.Black, 0, 0);
}