public override void Dispose()
{
VisualizersData.Clear();
foreach (var item in Brushes)
{
item.Value.Brush.Dispose();
}
}
private void Initialize(AudioPlayer audioPlayer, SpectrumVisualizer element)
{
Task.Run(() =>
{
var track = audioPlayer.CurrentlyPlaying;
var callerElement = element;
var result = audioPlayer.CalculateSpecterumData(callerElement.BandCount);
lock (VisualizersData)
{
if (!VisualizersData.TryGetValue(track, out List <TimeSpectrumData> data))
{
VisualizersData.Add(track, result);
}
else
{
VisualizersData[track] = result;
}
}
});
}
protected override void InternalRender(SpectrumVisualizer element, AudioPlayer audioPlayer, DrawGraphicsEventArgs renderArgs)
{
if (audioPlayer.CurrentlyPlaying != CurrentlyPlaying)
{
CurrentlyPlaying = audioPlayer.CurrentlyPlaying;
Initialize(audioPlayer, element);
}
if (!VisualizersData.TryGetValue(audioPlayer.CurrentlyPlaying, out List <TimeSpectrumData> spectrumData))
{
return;
}
if (!(spectrumData?.Any() ?? false))
{
return;
}
var currentTime = audioPlayer.CurrentTime.TotalMilliseconds;
TimeSpectrumData playingSpectrumPart = null;
for (int i = 0; i < spectrumData.Count - 1; i++)
{
if (spectrumData[i + 1].Time > currentTime && spectrumData[i].Time <= currentTime)
{
playingSpectrumPart = spectrumData[i];
break;
}
}
playingSpectrumPart = playingSpectrumPart ?? spectrumData[spectrumData.Count - 1];
var gfx = renderArgs.Graphics;
foreach (var drawer in SpectrumDrawers)
{
if ((drawer.Key & element.VisualizationType) == 0)
{
continue;
}
float startingPosition = element.BandSpace;
if (element.VisualizationType == SpectrumVisualizationType.Bottom ||
element.VisualizationType == SpectrumVisualizationType.Top)
{
startingPosition += element.Location.X;
}
else
{
startingPosition += element.Location.Y;
}
for (int index = 0; index < playingSpectrumPart.SpectrumData.Length; index++)
{
var band = playingSpectrumPart.SpectrumData[index];
if (!Brushes.TryGetValue(element, out IBrush brush))
{
brush = gfx.CreateSolidBrush(element.BandColor.ToOverlayColor());
Brushes.Add(element, brush);
}
drawer.Value(element, band * element.Multiplier, startingPosition, gfx, brush);
startingPosition += element.BandWidth + element.BandSpace;
}
}
}
