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don't partially regen derivative_cache if derivative is disabled

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Simon Gardling 2022-03-08 11:00:32 -05:00
parent 21e56cac4d
commit 25c4285fc0
1 changed files with 17 additions and 13 deletions
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30
src/function.rs
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@ -130,20 +130,24 @@ impl FunctionEntry {
); );
if self.derivative_cache.is_some() { if self.derivative_cache.is_some() {
let derivative_cache = self.derivative_cache.as_ref().unwrap(); if self.derivative {
let derivative_cache = self.derivative_cache.as_ref().unwrap();
self.derivative_cache = Some( self.derivative_cache = Some(
(0..=self.pixel_width) (0..=self.pixel_width)
.map(|x| (x as f64 / resolution as f64) + min_x) .map(|x| (x as f64 / resolution as f64) + min_x)
.map(|x| { .map(|x| {
if let Some(i) = x_data.get_index(x) { if let Some(i) = x_data.get_index(x) {
derivative_cache[i] derivative_cache[i]
} else { } else {
Value::new(x, self.function.derivative(x)) Value::new(x, self.function.derivative(x))
} }
}) })
.collect(), .collect(),
); );
} else {
self.derivative_cache = None;
}
} }
} else { } else {
self.back_cache = None; self.back_cache = None;