public double FrequencyAt(double t, RunningOptions options)
{
double f1 = Frequency1.ToHertz(options), f2 = IsSweep ? Frequency2.ToHertz(options) : f1;
double duration = double.IsNaN(Duration) ? options.defaultDuration.TotalSeconds : Duration;
var f = f1 + (f2 - f2) * t / duration;
if (options.frequencyModulation)
{
f += options.fmAmplitudeHz * triangleWave(2.0 * Math.PI * t * options.fmFrequency);
}
return(f);
}
public IEnumerable <Command> Commands(RunningOptions options)
{
double duration = double.IsNaN(Duration) ? options.defaultDuration.TotalSeconds : Duration;
TimeSpan remaining = TimeSpan.FromSeconds(duration);
Waveform w = Waveform1;
if (w == Waveform.Default)
{
w = options.defaultWaveform;
}
yield return(new Command(new SetWaveform(w), double.NaN, w, double.NaN, remaining));
if (IsSweep || options.isModulated)
{
double f1 = Frequency1.ToHertz(options), f2 = IsSweep ? Frequency2.ToHertz(options) : f1;
double numberOfSteps = duration / stepDuration.TotalSeconds;
for (int i = 0; i < numberOfSteps; ++i)
{
double f = FrequencyAt(i * stepDuration.TotalSeconds, options);
double a = AmplitudeAt(i * stepDuration.TotalSeconds, options);
if (options.amplitideModulation)
{
yield return(new Command(new SetAmplitude(a), f, w, a, remaining));
}
yield return(new Command(new SetFrequency(f, stepDuration), f, w, a, remaining -= stepDuration));
}
}
else
{
double f = Frequency1.ToHertz(options);
double a = AmplitudeAt(0, options);
yield return(new Command(new SetFrequency(f, TimeSpan.FromSeconds(1)), f, w, a, TimeSpan.FromSeconds(duration)));
for (double t = duration - 1; t > 0; t -= 1)
{
yield return(new Command(new Noop(TimeSpan.FromSeconds(1)), f, w, a, TimeSpan.FromSeconds(t)));
}
}
}