private void DrawBumps(SKCanvas canvas, float radius)
{
canvas.Save();
_paint.Style = SKPaintStyle.Fill;
_paint.Shader = SKShader.CreateRadialGradient(new SKPoint(radius.Scale(0.01f), -radius.Scale(0.01f)),
radius.Scale(0.05f),
BackgroundColor.BumpsGradientColor(IsEnabled),
new float[] { 0f, 0.8f, 1f },
SKShaderTileMode.Clamp);
canvas.Save();
canvas.Translate(0, radius.Scale(0.25f));
canvas.DrawCircle(0, 0, radius.Scale(0.05f), _paint);
canvas.Restore();
canvas.Save();
canvas.Translate(0, -radius.Scale(0.25f));
canvas.DrawCircle(0, 0, radius.Scale(0.05f), _paint);
canvas.Restore();
canvas.Save();
canvas.Translate(radius.Scale(0.25f), 0);
canvas.DrawCircle(0, 0, radius.Scale(0.05f), _paint);
canvas.Restore();
canvas.Save();
canvas.Translate(-radius.Scale(0.25f), 0);
canvas.DrawCircle(0, 0, radius.Scale(0.05f), _paint);
canvas.Restore();
_paint.ImageFilter = null;
canvas.Restore();
}