protected void OnVisualizationUpdated(VisualizationUpdatedEventArgs e)
{
var handler = VisualizationUpdated;
if (handler != null)
{
VisualizationUpdated(this, e);
}
}
void model_VisualizationUpdated(object sender, VisualizationUpdatedEventArgs e)
{
//Dispatcher.Invoke(() =>
//{
var dc = dv.RenderOpen();
if (dpiX == 0 || dpiY == 0)
{
PresentationSource src = PresentationSource.FromVisual(this);
dpiX = 96 * src.CompositionTarget.TransformToDevice.M11;
dpiY = 96 * src.CompositionTarget.TransformToDevice.M22;
}
var width = vis.ActualWidth;
var height = vis.ActualHeight;
int numPoints = 64;
int skip = e.SampleBuffer.Length / numPoints;
double lineSpacing = (width / (numPoints)); //256 points
double startX = 0;
double startY = (height / 2);
//dc.Draw
//for now, we will only work with waveform
for (var x = 0; x < numPoints; x++)
{
float scale = (1 / ((float)(height / 64)));
float data1 = e.SampleBuffer[x * skip] / scale;
float data2 = e.SampleBuffer[(x * skip) + 1] / scale;
var data = (data1 + data2) / 2;//
double endX = startX + lineSpacing;
double endY = startY + data;
dc.DrawLine(
pen,
new System.Windows.Point(startX, startY),
new System.Windows.Point(endX, endY)
);
//next start is last end
startX = endX;
startY = endY;
}
//get ready to display
dc.Close();
//if (bmp == null || bmp.Width != (int)width || bmp.Height != (int)height)
{
bmp = new RenderTargetBitmap((int)width, (int)height, dpiX, dpiY, PixelFormats.Pbgra32);
}
bmp.Render(dv);
vimg.Source = bmp;
//}, System.Windows.Threading.DispatcherPriority.Render);
}