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Rename step_size() current parameter to start

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Robbert van der Helm 2022-09-04 18:28:56 +02:00
parent 8e17972da5
commit 3a9d56e956
1 changed files with 6 additions and 6 deletions
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12
src/param/smoothing.rs
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@ -85,22 +85,22 @@ impl SmoothingStyle {
/// [`SmoothingStyle::num_steps()`]. Check the source code of the [`SmoothingStyle::next()`] and
/// [`SmoothingStyle::next_step()`] functions for details on how these values should be used.
#[inline]
pub fn step_size(&self, current: f32, target: f32, num_steps: u32) -> f32 {
pub fn step_size(&self, start: f32, target: f32, num_steps: u32) -> f32 {
nih_debug_assert!(num_steps >= 1);
match self {
SmoothingStyle::None => 0.0,
SmoothingStyle::Linear(_) => (target - current) / (num_steps as f32),
SmoothingStyle::Linear(_) => (target - start) / (num_steps as f32),
SmoothingStyle::Logarithmic(_) => {
// We need to solve `current * (step_size ^ num_steps) = target` for `step_size`
nih_debug_assert_ne!(current, 0.0);
((target / current) as f64).powf((num_steps as f64).recip()) as f32
// We need to solve `start * (step_size ^ num_steps) = target` for `step_size`
nih_debug_assert_ne!(start, 0.0);
((target / start) as f64).powf((num_steps as f64).recip()) as f32
}
// In this case the step size value is the coefficient the current value will be
// multiplied by, while the target value is multipled by one minus the coefficient. This
// reaches 99.99% of the target value after `num_steps`. The smoother will snap to the
// target value after that point.
SmoothingStyle::Exponential(_) => 0.0001f64.powf(1.0 / num_steps as f64) as f32,
SmoothingStyle::Exponential(_) => 0.0001f64.powf((num_steps as f64).recip()) as f32,
}
}