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crate::ix!();
impl RetuneToStandardTuning for SurgeTuner {
fn retune_to_standard_tuning(&mut self) {
self.init();
}
}
impl RetuneToScale for SurgeTuner {
fn retune_to_scale(&mut self, scale: &crate::Scale) -> bool {
if !scale.is_valid() {
return false;
}
self.current_scale = Align16(scale.clone());
self.current_tuning.is_standard_tuning = false;
let pos_pitch0: i32 = 256 + self.current_mapping.tuning_constant_note;
let pos_scale0: i32 = 256 + self.current_mapping.middle_note;
let scale_constant_pitch = self.scale_constant_pitch();
let pitch_mod: f32 = scale_constant_pitch.log2() - 1.0;
let mut _scale_position_of_start_note: i32 = 0;
let mut scale_position_of_tuning_note: i32 = self.current_mapping.tuning_constant_note - self.current_mapping.middle_note;
if self.current_mapping.count > 0 {
scale_position_of_tuning_note = self.current_mapping.keys[scale_position_of_tuning_note as usize];
}
let scale_count: i32 = scale.count as i32;
let tuning_center_pitch_offset: f32 = match scale_position_of_tuning_note {
0 => 0.0,
_ => {
let mut tshift: f32 = 0.0;
let dt: f32 = scale.tones[scale.count -1].val - 1.0;
while scale_position_of_tuning_note < 0
{
scale_position_of_tuning_note += scale_count;
tshift += dt;
}
while scale_position_of_tuning_note > (scale_count)
{
scale_position_of_tuning_note -= scale_count;
tshift -= dt;
}
match scale_position_of_tuning_note {
0 => -tshift,
_ => scale.tones[(scale_position_of_tuning_note - 1) as usize].val - 1.0 - tshift,
}
},
};
let mut pitches: [f32; 512] = [0.0; 512];
pitches[pos_pitch0 as usize] = 1.0;
for (idx, pitch) in pitches.iter_mut().enumerate() {
// TODO: ScaleCenter and PitchCenter are now two different notes.
let distance_from_pitch0: i32 = (idx as i32) - pos_pitch0;
let distance_from_scale0: i32 = (idx as i32) - pos_scale0;
match distance_from_pitch0 {
0 => {
self.tables.table_pitch[idx] = 2.0_f64.powf( (*pitch + pitch_mod).into() );
if cfg![debug_scales] && idx > 296 && idx < 340
{
println!("PITCH: i={}, n={}, p={}, tp={}, fr={}",
idx,
idx - 256,
*pitch,
self.tables.table_pitch[idx],
self.tables.table_pitch[idx] * 8.175798915
);
}
},
_ => {
/* We used to have this which assumed 1-12
Now we have our note number, our distance from the
center note, and the key remapping
int rounds = (distanceFromScale0-1) / scale.count;
int this_round = (distanceFromScale0-1) % scale.count;
*/
let mut disable: bool = false;
let (mut rounds, mut this_round) =
match (self.current_mapping.is_standard_mapping) || (self.current_mapping.count == 0)
{
true => {
let rounds = (distance_from_scale0 - 1) / scale_count;
let this_round = (distance_from_scale0 - 1) % scale_count;
(rounds, this_round)
},
false => {
/*
** Now we have this situation. We are at note i so we
** are m away from the center note which is distanceFromScale0
**
** If we mod that by the mapping size we know which note we are on
*/
let mut mapping_key: i32 = distance_from_scale0 % self.current_mapping.count;
if mapping_key < 0 {
mapping_key += self.current_mapping.count;
}
let cm: i32 = self.current_mapping.keys[mapping_key as usize];
let mut push: i32 = 0;
match cm < 0 {
true => { disable = true },
false => { push = mapping_key - cm },
};
let rounds = (distance_from_scale0 - push - 1) / scale_count;
let this_round = (distance_from_scale0 - push - 1) % scale_count;
if cfg![debug_scales] && idx > 296 && idx < 340 {
println!("MAPPING n={}, pushes ds0={}, cmc={}, tr={}, r={}, mk={}, cm={}, push={}, dis={}, mk-p-1={}",
idx - 256,
distance_from_scale0,
self.current_mapping.count,
this_round,
rounds,
mapping_key,
cm,
push,
disable,
mapping_key - push - 1
);
}
(rounds, this_round)
},
};
if this_round < 0 {
this_round += scale_count;
rounds -= 1;
}
let _mul: f32 = scale.tones[scale.count-1].val.pow(rounds);
*pitch = match disable {
true => 0.0,
false => { scale.tones[this_round as usize].val + (rounds as f32) * (scale.tones[scale.count - 1].val - 1.0) - tuning_center_pitch_offset },
};
let otp: f64 = self.tables.table_pitch[idx];
self.tables.table_pitch[idx] = 2.0_f64.powf( (*pitch + pitch_mod).into() );
if cfg![debug_scales] && idx > 296 && idx < 340 {
println!(
"PITCH: i={}, n={}, ds0={}, dp0={}, r={}, t={}, p={}, t={} {}, dis={}, tp={}, fr={}, otp={}, tcpo={}, diff={}",
idx,
idx - 256,
distance_from_scale0,
distance_from_pitch0,
rounds,
this_round,
*pitch,
scale.tones[this_round as usize].val,
scale.tones[this_round as usize],
disable,
self.tables.table_pitch[idx],
self.tables.table_pitch[idx] * 8.175798915,
otp,
tuning_center_pitch_offset,
self.tables.table_pitch[idx] - otp
);
}
}
};
}
let dsamplerate_os_inv = self.srunit.dsamplerate_os_inv();
for idx in 0..512 {
let table_pitch = self.tables.table_pitch[idx];
self.tables.table_pitch_inv[idx] = 1.0 / table_pitch;
let arg: f64 = 2.0 * PI * mind(
0.5,
CONCERT_A_HZ * (table_pitch as f64) * dsamplerate_os_inv
);
self.tables.table_note_omega[[0,idx]] = arg.sin();
self.tables.table_note_omega[[1,idx]] = arg.cos();
}
true
}
}