UIElement GenPolyline(object selected, WaveFileReader wfr, double widthScale, double height, int scale)
{
double width = wfr.TotalTime.TotalSeconds * widthScale;
Polyline shape = new Polyline
{
StrokeThickness = 1.0,
Tag = selected,
Height = height,
Width = width,
Stroke = new LinearGradientBrush
{
GradientStops =
{
new GradientStop {
Color = Colors.DarkGray, Offset = 0
},
new GradientStop {
Color = Colors.Gray, Offset = 0.8
},
}
},
};
for (int x = 0; ; x++)
{
double[] samples = wfr.ReadOneSample();
if (samples == null || samples.Length < 1)
{
break;
}
if (x % scale != 0)
{
continue;
}
double xx = x * shape.Width / wfr.Length;
double yy = (samples[0] + 1.0) * height / 2.0;
shape.Points.Add(new Point(xx, yy));
}
return(shape);
}