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rustfmt

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This commit is contained in:
Simon Gardling 2022-02-14 09:38:52 -05:00
parent 19e73b070a
commit 95a0a8b194
1 changed files with 23 additions and 20 deletions
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43
src/func_plot.rs
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@ -57,29 +57,32 @@ pub fn draw(
fn integral_rectangles( fn integral_rectangles(
min_x: f32, step: f32, num_interval: usize, func: &dyn Fn(f64) -> f64, min_x: f32, step: f32, num_interval: usize, func: &dyn Fn(f64) -> f64,
) -> (Vec<(f32, f32, f32)>, f32) { ) -> (Vec<(f32, f32, f32)>, f32) {
let data2: Vec<(f32, f32, f32)> = (0..num_interval).map(|e| { let data2: Vec<(f32, f32, f32)> = (0..num_interval)
let x: f32 = ((e as f32) * step) + min_x; .map(|e| {
let x: f32 = ((e as f32) * step) + min_x;
let x2: f32 = match x > 0.1 { let x2: f32 = match x > 0.1 {
true => x+step, true => x + step,
false => x-step, false => x - step,
}; };
let tmp1: f32 = func(x as f64) as f32; let tmp1: f32 = func(x as f64) as f32;
let tmp2: f32 = func(x2 as f64) as f32; let tmp2: f32 = func(x2 as f64) as f32;
let y: f32 = match tmp2.abs() > tmp1.abs() { let y: f32 = match tmp2.abs() > tmp1.abs() {
true => tmp1, true => tmp1,
false => tmp2 false => tmp2,
}; };
// Add current rectangle's area to the total // Add current rectangle's area to the total
if !y.is_nan() { if !y.is_nan() {
(x, x2, y) (x, x2, y)
} else { } else {
(0.0, 0.0, 0.0) (0.0, 0.0, 0.0)
} }
}).filter(|ele| ele != &(0.0, 0.0, 0.0)).collect(); })
let area: f32 = data2.iter().map(|(_, _, y)| y*step).sum(); // sum of all rectangles' areas .filter(|ele| ele != &(0.0, 0.0, 0.0))
.collect();
let area: f32 = data2.iter().map(|(_, _, y)| y * step).sum(); // sum of all rectangles' areas
return (data2, area); return (data2, area);
} }