private static (int controlMin, int controlMax, int targetRange) GetControlValuesFromPitch(RatchetOptions options, Clip controlSequence)
{
int controlMin;
int controlMax;
int min = controlSequence.Notes.Select(x => x.Pitch).Min();
int max = controlSequence.Notes.Select(x => x.Pitch).Max();
if (options.AutoScale)
{
controlMin = min;
controlMax = max;
}
else
{
controlMin = min - min % 12;
controlMax = max + 12 - max % 12;
}
var targetRange = Math.Max(controlMax - controlMin, 1);
return(controlMin, controlMax, targetRange);
}
public static ProcessResult <Clip[]> Apply(RatchetOptions options, params Clip[] clips)
{
options.Strength = Math.Clamp(options.Strength, 0, 1);
if (options.By != null)
{
clips = clips.Prepend(options.By).ToArray();
}
ClipUtilities.NormalizeClipLengths(clips);
if (clips.Length < 2)
{
clips = new[] { clips[0], clips[0] };
}
Clip controlSequence = new Clip(clips[0]);
Clip[] targetSequences = clips.Skip(1).Select(x => new Clip(x)).ToArray();
Clip[] resultSequences = new Clip[targetSequences.Length];
if (options.RatchetValues.Length > 0)
{
for (var i = 0; i < options.RatchetValues.Length; i++)
{
if (options.RatchetValues[i] < 1)
{
options.RatchetValues[i] = 1; // todo: should be handled by optionparser and min max values in optioninfo
}
}
for (var i = 0; i < targetSequences.Length; i++)
{
var targetSequence = targetSequences[i];
resultSequences[i] = DoManualRatchet(options.RatchetValues, targetSequence, options.Strength, options.VelocityToStrength, options.Shape,
options.Mode);
}
}
else
{
var(controlMin, controlMax, targetRange) = options.Mode == RatchetMode.Pitch
? GetControlValuesFromPitch(options, controlSequence)
: GetControlValuesFromVelocity(options, controlSequence);
float controlRange = Math.Max(controlMax - controlMin, 1);
// set pitch for each note in control sequence
if (options.Mode == RatchetMode.Pitch)
{
foreach (var note in controlSequence.Notes)
{
note.Pitch = (int)Math.Round((note.Pitch - controlMin) / controlRange * targetRange) + 1;
}
}
else
{
foreach (var note in controlSequence.Notes)
{
note.Velocity = (int)Math.Round((Math.Clamp(note.Velocity, controlMin, controlMax) - controlMin) / controlRange * targetRange) + 1;
}
}
for (var i = 0; i < targetSequences.Length; i++)
{
var targetSequence = targetSequences[i];
resultSequences[i] = DoRatchet(controlSequence, targetSequence, (float)options.Strength, options.VelocityToStrength, options.Shape,
options.Mode);
}
}
return(new ProcessResult <Clip[]>(resultSequences));
}
private static (float controlMin, float controlMax, float targetRange) GetControlValuesFromVelocity(RatchetOptions options, Clip controlSequence)
{
float controlMin;
float controlMax;
float targetRange;
if (options.AutoScale)
{
controlMin = controlSequence.Notes.Select(x => x.Velocity).Min();
controlMax = controlSequence.Notes.Select(x => x.Velocity).Max();
targetRange = Math.Max(controlMax - controlMin, 10) / 10;
}
else
{
controlMin = 20;
controlMax = 120;
targetRange = 16;
}
return(controlMin, controlMax, targetRange);
}
