public override IRender Render(float dt)
{
var chromas = _featureCache.GetChromas();
using (var canvas = _render.CreateCanvas())
{
canvas.Clear();
for (int i = 0; i < NumBars; i++)
{
if (chromas[i] >= _threshold)
{
var paint = new SKPaint
{
IsAntialias = true,
Color = _color.WithScale(chromas[i]),
Style = SKPaintStyle.Fill
};
int x0 = i * _barSize;
canvas.DrawRect(x0, 0, _barSize, Height, paint);
paint.Dispose();
}
}
}
return(_render);
}
public override IRender Render(float dt)
{
_render.Clear();
_render.Map((x, y) =>
{
float xt = (float)x / Width - 0.5f;
float yt = (float)y / Height - 0.5f;
float z = _a * (float)Math.Sin(_n * Math.PI * xt) * (float)Math.Sin(_m * Math.PI * yt)
+ _b * (float)Math.Sin(_m * Math.PI * xt) * (float)Math.Sin(_n * Math.PI * yt);
float v = 1 - z * z;
return(_color.WithScale(v));
});
return(_render);
}
public override IRender Render(float dt)
{
if (_flashDuration > MaxFlashDuration)
{
_color = new SKColor(0, 0, 0);
}
else
{
_flashDuration += dt;
_color = _color.WithScale(1f - _flashDuration / MaxFlashDuration);
}
using (var canvas = _render.CreateCanvas())
canvas.Clear(_color);
return(_render);
}
public override IRender Render(float dt)
{
var spectrum = _featureCache.GetMagnitudeSpectrum(Width / 2, 100, 4000);
for (int x = 0; x < Width / 2; x++)
{
var color = _color.WithScale(spectrum[x]);
for (int y = 0; y < Height; y++)
{
_render[Width / 2 + x, y] = color;
_render[Width / 2 - x, y] = color;
}
}
return(_render);
}