private void timer_Tick(object sender, System.EventArgs e)
{
if (channel != null)
{
FMOD.RESULT result;
float[] spectrum = new float[SPECTRUMSIZE];
float dominanthz = 0;
float max;
int dominantnote = 0;
int count = 0;
result = channel.getSpectrum(spectrum, SPECTRUMSIZE, 0, FMOD.DSP_FFT_WINDOW.TRIANGLE);
ERRCHECK(result);
max = 0;
for (count = 0; count < SPECTRUMSIZE; count++)
{
if (spectrum[count] > 0.01f && spectrum[count] > max)
{
max = spectrum[count];
bin = count;
}
}
dominanthz = (float)bin * BINSIZE; /* dominant frequency min */
dominantnote = 0;
for (count = 0; count < 120; count++)
{
if (dominanthz >= notefreq[count] && dominanthz < notefreq[count + 1])
{
// which is it closer to. This note or the next note
if (Math.Abs(dominanthz - notefreq[count]) < Math.Abs(dominanthz - notefreq[count + 1]))
{
dominantnote = count;
}
else
{
dominantnote = count + 1;
}
break;
}
}
statusBar.Text = "Detected rate : " + dominanthz + " -> " + (((float)bin + 0.99f) * BINSIZE) + " Detected musical note : " + note[dominantnote] + " (" + notefreq[dominantnote] + ")";
}
if (system != null)
{
system.update();
}
}
protected override void OnPaint(PaintEventArgs e)
{
RectangleF srcRect = new RectangleF(0, y, this.Width, this.Height);
float scrollY = this.Height / 2; /*( ( y + this.Height ) / ( img.Height + this.Height ) ) * this.Height;*/
int widSet = 8;
int rightSet = this.Width - widSet - 4;
int leftSet = widSet;
int guideBarLen = 20;
int guideBarWid = 1;
int mainLen = 3;
int mainWid = 3;
int spectrumAccuracy = 64 * 1;
float[] spectrum = new float[spectrumAccuracy];
FMOD.RESULT result = soundChannel.getSpectrum(spectrum, spectrumAccuracy, 0, FMOD.DSP_FFT_WINDOW.BLACKMAN);
float avg = spectrum.Average();
avg *= 100;
float[] bassSpec = spectrum.Take(spectrumAccuracy / 8).ToArray();
float bassAvg = bassSpec.Average();
bassAvg *= 25;
Color baseColor = Color.LightBlue;
int colorRange = 40;
int rOff = rnd.Next(-colorRange, colorRange + 1);
int gOff = rnd.Next(-colorRange, colorRange + 1);
int bOff = rnd.Next(-colorRange, colorRange + 1);
int newRed = Math.Min(baseColor.R + rOff, 255);
int newGreen = Math.Min(baseColor.G + gOff, 255);
int newBlue = Math.Min(baseColor.B + bOff, 255);
baseColor = Color.FromArgb(newRed, newGreen, newBlue);
Pen basePen = new Pen(baseColor, bassAvg);
RectangleF scrollRect = new RectangleF(rightSet, scrollY, mainWid, mainLen);
RectangleF topRect = new RectangleF(rightSet + ((scrollRect.Width / 2.0f) - (guideBarWid / 2.0f)), scrollY - guideBarLen, guideBarWid, guideBarLen);
RectangleF bottomRect = new RectangleF(rightSet + ((scrollRect.Width / 2.0f) - (guideBarWid / 2.0f)), scrollY + scrollRect.Height, guideBarWid, guideBarLen);
RectangleF scrollRect2 = new RectangleF(leftSet, scrollY, mainWid, mainLen);
RectangleF topRect2 = new RectangleF(leftSet + ((scrollRect.Width / 2.0f) - (guideBarWid / 2.0f)), scrollY - guideBarLen, guideBarWid, guideBarLen);
RectangleF bottomRect2 = new RectangleF(leftSet + ((scrollRect.Width / 2.0f) - (guideBarWid / 2.0f)), scrollY + scrollRect.Height, guideBarWid, guideBarLen);
Color textColor = customSpectrum[specValue];
ColorMap[] map = new ColorMap[1];
map[0] = new ColorMap();
map[0].OldColor = Color.Magenta;
map[0].NewColor = textColor;
ImageAttributes attr = new ImageAttributes();
attr.SetRemapTable(map);
e.Graphics.DrawImage(img, new Rectangle(0, 0, this.Width, this.Height), srcRect.X, srcRect.Y, srcRect.Width, srcRect.Height, GraphicsUnit.Pixel, attr);
PointF midRight = new PointF((scrollRect.X + (scrollRect.Width / 2.0f)), (scrollRect.Y + (scrollRect.Height / 2.0f)));
e.Graphics.FillRectangle(Brushes.White, scrollRect);
e.Graphics.FillRectangle(Brushes.WhiteSmoke, topRect);
e.Graphics.FillRectangle(Brushes.WhiteSmoke, bottomRect);
PointF midLeft = new PointF((scrollRect2.X + (scrollRect2.Width / 2.0f)), (scrollRect2.Y + (scrollRect2.Height / 2.0f)));
e.Graphics.FillRectangle(Brushes.White, scrollRect2);
e.Graphics.FillRectangle(Brushes.WhiteSmoke, topRect2);
e.Graphics.FillRectangle(Brushes.WhiteSmoke, bottomRect2);
if (avg > 1.4)
{
// lightning
int subDivs = rnd.Next(2, 10);
float subWid = this.Width / ( float )subDivs;
float range = 20; // +-30 pixels from the origin
if (rnd.Next(0, 2) != 0)
{
return;
}
lightningPoints.Clear();
lightningPoints.Add(midLeft);
for (int i = 1; i < subDivs; i++)
{
float currX = midLeft.X;
float currY = midLeft.Y;
float yMin = currY - (range * avg);
float yMax = currY + (range * avg);
float pointY = rnd.Next(( int )yMin, ( int )yMax + 1);
float xOffset = rnd.Next(-25, 26);
PointF lightPoint = new PointF((subWid * i) + xOffset, pointY);
lightningPoints.Add(lightPoint);
}
lightningPoints.Add(midRight);
e.Graphics.DrawLines(basePen, lightningPoints.ToArray());
}
else
{
if (rnd.Next(0, 3) != 0)
{
return;
}
// no connection, lets just spark
int numSparks = rnd.Next(1, 4);
float maxDist = rnd.Next(20, this.Width / 6);
int direction = rnd.Next(-115, 116);
maxDist *= avg;
sparks.Clear();
for (int i = 0; i < numSparks; i++)
{
var spark = new List <PointF>();
float origX = midLeft.X;
float origY = midLeft.Y;
spark.Add(new PointF(origX, origY));
origX += maxDist * ( float )Math.Cos(DegreeToRadian(direction));
origY += maxDist * ( float )Math.Sin(DegreeToRadian(direction));
spark.Add(new PointF(origX, origY));
maxDist = rnd.Next(20, this.Width / 6);
maxDist *= avg;
direction = rnd.Next(-90, 91);
origX += maxDist * ( float )Math.Cos(DegreeToRadian(direction));
origY += maxDist * ( float )Math.Sin(DegreeToRadian(direction));
spark.Add(new PointF(origX, origY));
sparks.Add(spark);
}
foreach (var spark in sparks)
{
e.Graphics.DrawLines(basePen, spark.ToArray());
}
sparks.Clear();
for (int i = 0; i < numSparks; i++)
{
var spark = new List <PointF>();
float origX = midRight.X;
float origY = midRight.Y;
spark.Add(new PointF(origX, origY));
origX -= maxDist * ( float )Math.Cos(DegreeToRadian(direction));
origY -= maxDist * ( float )Math.Sin(DegreeToRadian(direction));
spark.Add(new PointF(origX, origY));
maxDist = rnd.Next(20, this.Width / 6);
maxDist *= avg;
direction = rnd.Next(-90, 91);
origX -= maxDist * ( float )Math.Cos(DegreeToRadian(direction));
origY -= maxDist * ( float )Math.Sin(DegreeToRadian(direction));
spark.Add(new PointF(origX, origY));
sparks.Add(spark);
}
foreach (var spark in sparks)
{
e.Graphics.DrawLines(basePen, spark.ToArray());
}
}
}
