sketched out the AD envelope

This commit is contained in:
Weird Constructor 2021-06-14 05:37:08 +02:00
parent 9f7d67f096
commit c45c15d64b

View file

@ -65,6 +65,85 @@ r#"Ad - Attack-Decay Envelope
} }
/*
struct {
srate_per_ms: f64,
value : f64 = 0.0;
inc : f64 = 0.0;
stage = 0;
last_time = 0.0;
target : f64 = 1.0;
shape = 0.5;
}
set_sample_rate(srate) { self.srate_per_ms = srate / 1000.0 }
// block start:
let mut shape_src =
match stage {
2 => dcy_shape,
_ => atk_shape,
};
let mut inc_time_src =
match stage {
2 => dcy,
_ => atk,
};
let mut mult : f64 =
if mult == 1 { 10.0 } else if mult == 2 {100.0 } else { 1.0};
// each frame:
if stage == 0 {
if trigger(trig_in) {
value = 0.0;
// transition to stage 1 (attack):
stage = 1;
target = 1.0;
shape_src = atk_shape;
inc_time_src = atk;
last_time = -1.0;
}
}
let cur_time = denorm(inc_time_src);
if last_time != cur_time {
inc =
(target - value)
/ ((cur_time as f64) * mult * srate_per_ms);
}
value += inc;
shape = read(frame, shape_src).clamp(0.0, 1.0);
match stage {
1 => {
if value >= target {
// transition to stage 2 (decay):
stage = 2;
target = 0.0;
shape_src = dcy_shape;
inc_time_src = dcy;
last_time = -1.0;
}
},
2 => {
if value <= target {
stage = 0;
eov_trigger.trigger();
}
},
_ => {},
}
let in_val = inp.read(frame);
out.write(
frame,
in_val
* sqrt4_to_pow4(
value.clamp(0.0, 1.0) as f32, shape));
trig.write(frame, eov_trigger.next());
*/
impl DspNode for Ad { impl DspNode for Ad {
fn outputs() -> usize { 1 } fn outputs() -> usize { 1 }