// Form1_SizeChanged
private void Form1_Paint(object sender, PaintEventArgs e)
{
audio_bytes = (int)Bass.BASS_ChannelSeconds2Bytes(Audio_Stream, Interval / 1000.0); // текущая длина аудиобуффера в байтах
if (audio_bytes <= 0)
{
// при первом запуске когда нет проигрывателя
e.Graphics.DrawString("Press right mouse button.", fnt1, Brushes.Yellow, this.ClientSize.Width / 2 - (64 + 16), this.ClientSize.Height / 2 - 16);
return;
}
int Okno = 0;
cic = Mcic [ResToIdx(Resample)];
int samples = Bass.BASS_ChannelGetData(Audio_Stream, audiobuf, audio_bytes) / SAMPLE_BYTES; // число самплов в аудиобуффере
for (int i = 0, j = 0; i < samples; i++)
{
// нормализатор нуля
float x = (float)audiobuf [j++];
float y = (float)audiobuf [j++];
x -= (Xnorm += (x - Xnorm) * 0.0001f);
y -= (Ynorm += (y - Ynorm) * 0.0001f);
if (cic.Decimate((int)x, (int)y))
{
if (iFilter2 < 2)
{
Xbuf [Okno] = cic.X;
Ybuf [Okno] = cic.Y;
}
else
{
Xbuf [Okno] = (int)Xfir.Sim((double)cic.X);
Ybuf [Okno] = (int)Yfir.Sim((double)cic.Y);
}
Okno++;
}
}
if (Okno == 0)
{
return;
}
// Коррелятор для пущего стробоскопического эффекта
int Okno34 = Okno * 3 / 4;
int ix = 0, iy = 0;
double kx = 0.0f, ky = 0.0f;
for (int i = 0; i < Okno / 4; i++)
{
double kxx = 0.0f, kyy = 0.0f;
for (int j = 0, k = i; k < Okno34; j++, k++)
{
kxx += Math.Abs(Xbuf [k] * Xkor [j]);
kyy += Math.Abs(Ybuf [k] * Ykor [j]);
}
if (kx < kxx)
{
ix = i; kx = kxx;
}
if (ky < kyy)
{
iy = i; ky = kyy;
}
}
for (int i = 0; i < Okno34; i++)
{
Xbuf [i] = Xbuf [ix++];
Ybuf [i] = Xbuf [iy++];
}
const double CORR_LEAK = 0.125;
for (int i = 0; i < Okno34; i++)
{
Xkor [i] += (Math.Abs(Xbuf [i]) - Xkor [i]) * CORR_LEAK; // обучение интегратора коррелятора
Ykor [i] += (Math.Abs(Ybuf [i]) - Ykor [i]) * CORR_LEAK;
}
Okno = Okno34;
int Okno2 = Okno / 2; // центр окна
int vcnt = 0;
double vsum2 = 0.0;
double kf1 = Palitra; // pct;
double kf2 = Gamma * 0.1;
double kf3 = Bright * 0.2;
int sec = System.Environment.TickCount / 1000 / 15; // раз в 15 сек
if (bRotate)
{
alpha = -(System.Environment.TickCount & 16383) / 32768.0 * Math.PI;
x0 = Math.Cos(alpha);
y0 = Math.Sin(alpha);
kf = Math.Max(Math.Abs(x0 + y0), Math.Abs(x0 - y0));
if (!bInside)
{
kf = 1.0 / kf;
}
}
else
{
alpha = 0.0;
x0 = 1.0;
y0 = 0.0;
kf = 1.0;
}
Graphics g = e.Graphics;
Bitmap bmp1 = new Bitmap(Okno, Okno, g);
var Fbmp1 = new FastBitmap(bmp1);
Color color1 = new Color();
double x1, y1, x2, y2;
for (int x = 0; x < Okno; x++)
{
x1 = (double)(x - Okno2) / Okno2;
for (int y = 0; y < Okno; y++)
{
y1 = (double)(y - Okno2) / Okno2;
if (bSpiral)
{
int ir = (int)((x1 * x1 + y1 * y1) * DISTORTION / 2.0);
if (DISTORTION <= ir)
{
ir = DISTORTION - 1;
}
x2 = (Xrot [ir] * x1 + Yrot [ir] * y1);
y2 = (Xrot [ir] * y1 - Yrot [ir] * x1);
}
else
{
x2 = (x0 * x1 + y0 * y1);
y2 = (x0 * y1 - y0 * x1);
}
if (bDistortion)
{
int ir = (int)((x2 * x2 + y2 * y2) * DISTORTION / 2.0);
if (DISTORTION <= ir)
{
ir = DISTORTION - 1;
}
x2 *= DistortionTab [ir];
y2 *= DistortionTab [ir];
}
x2 = Okno2 + Okno2 * x2 * kf;
if ((0.0 <= x2) && (x2 < Okno))
{
y2 = Okno2 + Okno2 * y2 * kf;
if ((0.0 <= y2) && (y2 < Okno))
{
double v = Xbuf [(int)x2] + Ybuf [(int)y2];
if (ScreenLeak < 1.0)
{
v = Screen [x, y] += (v - Screen [x, y]) * ScreenLeak;
}
vsum2 += v * v; vcnt++;
if (0.0 < Power)
{
v /= Power;
}
if (bIsobar)
{
int va = (int)(v * 64.0 * Gamma) & 255;
int vb = ((sec & 1) == 0 ? va : -va & 255);
switch ((sec >> 1) % 6)
{
case 0: color1 = (0.0f < v ? Color.FromArgb(va, 0, 0) : Color.FromArgb(0, vb, 0)); break;
case 1: color1 = (0.0f < v ? Color.FromArgb(va, 0, 0) : Color.FromArgb(0, 0, vb)); break;
case 2: color1 = (0.0f < v ? Color.FromArgb(0, va, 0) : Color.FromArgb(0, 0, vb)); break;
case 3: color1 = (0.0f < v ? Color.FromArgb(0, va, 0) : Color.FromArgb(vb, 0, 0)); break;
case 4: color1 = (0.0f < v ? Color.FromArgb(0, 0, va) : Color.FromArgb(vb, 0, 0)); break;
case 5: color1 = (0.0f < v ? Color.FromArgb(0, 0, va) : Color.FromArgb(0, vb, 0)); break;
}
}
else
{
v = Math.Abs(v);
color1 = TriColor(kf1 + v * kf2, v * kf3);
}
Fbmp1.SetNextPixel(color1);
continue;
}
}
Fbmp1.SetNextPixel(Color.Black);
}
}
Fbmp1.Unlock();
double pwr1 = 0.0;
if (0 < vcnt)
{
pwr1 = Math.Sqrt(vsum2 / vcnt);
Power += (pwr1 - Power) / PowerLeak;
//bw.Write (BitConverter.GetBytes ((short)1000.0 * Power3), 0, sizeof (short));
}
//if (Power < pwr1)
{
Image img1 = bmp1;
if (bStretch)
{
g.DrawImage(img1, 0, 0, this.ClientSize.Width, this.ClientSize.Height);
}
else
{
int side = Math.Min(this.ClientSize.Width, this.ClientSize.Height);
g.DrawImage(img1, (this.ClientSize.Width - side) / 2, (this.ClientSize.Height - side) / 2, side, side);
}
g.DrawLine(pen2, (int)(this.ClientSize.Width * fpos / flen), this.ClientSize.Height - PENW, 0, this.ClientSize.Height - PENW);
img0 = img1;
}
//else if (img0 != null)
//{
// if (bStretch)
// {
// g.DrawImage (img0, 0, 0, this.ClientSize.Width, this.ClientSize.Height);
// }
// else
// {
// int side = Math.Min (this.ClientSize.Width, this.ClientSize.Height);
// g.DrawImage (img0, (this.ClientSize.Width - side) / 2, (this.ClientSize.Height - side) / 2, side, side);
// }
// g.DrawLine (pen2, (int)(this.ClientSize.Width * fpos / flen), this.ClientSize.Height - PENW, 0, this.ClientSize.Height - PENW);
//}
//g.DrawString (String.Format ("{0}", palitra0), fnt1, Brushes.Yellow, 0.0f, 0.0f);
//g.DrawString (String.Format ("{0} {1}", Okno, x2max), fnt1, Brushes.Yellow, 0.0f, 0.0f);
// кривая искажений
//if (0 < DistortionTab.Length)
//{
// int x00 = 0;
// int y00 = (int)(DistortionTab [0] * this.ClientSize.Height * 0.5);
// for (int i = 1; i < DistortionTab.Length; i++)
// {
// int x11 = this.ClientSize.Width * i / DistortionTab.Length;
// int y11 = (int)(DistortionTab [i] * this.ClientSize.Height * 0.5);
// g.DrawLine (Pens.Yellow, x00, y00, x11, y11);
// x00 = x11;
// y00 = y11;
// }
//}
}
