protected bool HandleLfoFunc(FunctionArgs args, List <double> evaluatedArgs)
{
if (evaluatedArgs.Count != 6)
{
return(false);
}
double input = evaluatedArgs[0];
double attack = evaluatedArgs[1];
WaveformShap shape = (WaveformShap)evaluatedArgs[2];
double phase = evaluatedArgs[3];
double cycles = evaluatedArgs[4];
double amount = evaluatedArgs[5];
if (attack < 0 || attack > 1)
{
return(false);
}
if (Enum.IsDefined(typeof(WaveformShap), shape) == false)
{
return(false);
}
//input
double output = input;
//cycles
output *= cycles;
//phase
output += phase % 360 / 360.0;
//shape
HandleWaveformFunc(output, shape, out output);
output -= 0.5;
//attack
double attackAtInput;
if (attack == 0)
{
attackAtInput = 1;
}
else
{
attackAtInput = Math.Min(1, input / attack);
}
output *= attackAtInput;
//amount
output *= amount;
output += 0.5;
args.Result = output;
return(true);
}
protected bool HandleWaveformFunc(double input, WaveformShap shape, out double output)
{
//simply using "input % 1" does not work for negative values.
double inAsRamp = (1 + (input % 1)) % 1;
switch (shape)
{
case WaveformShap.Sin:
output = Math.Sin(2 * Math.PI * input) / 2 + 0.5;
break;
case WaveformShap.Triangle:
//Offset the base ramp wave so that the triangle wave starts at 0.5 instead
//of 0.
double inAsOffsetRamp = (1 + ((input + 0.25) % 1)) % 1;
output = 1 - Math.Abs(inAsOffsetRamp - 0.5) * 2;
break;
case WaveformShap.Square:
output = System.Convert.ToDouble(inAsRamp < 0.5);
break;
case WaveformShap.Ramp:
output = inAsRamp;
break;
case WaveformShap.Saw:
output = 1 - inAsRamp;
break;
default:
output = double.NaN;
return(false);
}
return(true);
}
protected bool HandleWaveformFunc(double input, WaveformShap shape, out double output)
{
//simply using "input % 1" does not work for negative values.
double inAsRamp = (1 + (input % 1)) % 1;
switch (shape)
{
case WaveformShap.Sin:
output = Math.Sin(2 * Math.PI * input) / 2 + 0.5;
break;
case WaveformShap.Triangle:
//Offset the base ramp wave so that the triangle wave starts at 0.5 instead
//of 0.
double inAsOffsetRamp = (1 + ((input+0.25) % 1)) % 1;
output = 1 - Math.Abs(inAsOffsetRamp - 0.5) * 2;
break;
case WaveformShap.Square:
output = System.Convert.ToDouble(inAsRamp < 0.5);
break;
case WaveformShap.Ramp:
output = inAsRamp;
break;
case WaveformShap.Saw:
output = 1 - inAsRamp;
break;
default:
output = double.NaN;
return false;
}
return true;
}
