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update deps; tweak constants

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Raptorox 2025-06-05 17:55:35 +02:00
parent 57e28360a0
commit de5f28b4f7
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4 changed files with 101 additions and 55 deletions
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33
src/link.rs
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@ -1,36 +1,35 @@
use crate::particle::Particle;
use std::rc::Rc;
use std::cell::RefCell;
use std::rc::Rc;
pub struct Link {
p1: Rc<RefCell<Particle>>,
p2: Rc<RefCell<Particle>>,
length: f32
length: f32,
}
impl Link {
pub fn new(p1: Rc<RefCell<Particle>>, p2: Rc<RefCell<Particle>>, length: f32) -> Self {
Link {
p1: p1,
p2: p2,
length: length
}
Link { p1, p2, length }
}
pub fn solve(&mut self) {
let vec = self.p2.borrow().pos - self.p1.borrow().pos;
let vec_len = (vec.x*vec.x + vec.y*vec.y).sqrt();
let vec_norm = vec/vec_len;
let vec_len = (vec.x * vec.x + vec.y * vec.y).sqrt();
let max_stretch = 50.;
let clamped_len = vec_len.min(self.length + max_stretch);
if vec_len > self.length {
let vec_norm = vec / vec_len;
let displacement = clamped_len - vec_len;
let stiffness = 99.;
let vec_scaled = vec_norm * displacement * stiffness;
let max_stretch = 0.5;
let clamped_len = vec_len.min(self.length + max_stretch);
let damping = 0.98;
self.p1.borrow_mut().apply_force(-vec_scaled * damping);
self.p2.borrow_mut().apply_force(vec_scaled * damping);
let displacement = clamped_len - vec_len;
let stiffness = 999.;
let vec_scaled = vec_norm * displacement * stiffness;
let damping = 0.99;
self.p1.borrow_mut().apply_force(-vec_scaled * damping);
self.p2.borrow_mut().apply_force(vec_scaled * damping);
}
}
}