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solved the old distance part by removing the dt path

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Marcel Märtens 2022-06-10 13:49:49 +02:00
parent ccf9fdf9a7
commit fa14d96428
1 changed files with 3 additions and 3 deletions
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6
common/systems/tests/phys/basic.rs
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@ -340,16 +340,16 @@ fn physics_theory() -> Result<(), Box<dyn Error>> {
//physics
//let acc2 = (vel - old_vel) / dt;
//let distance = 0.5 * vel * dt - 0.5 * acc2 * dt * dt;
let distance_last = mass / c * ( ( ( old_vel * (c/acc / mass).sqrt()).atanh() ).cosh() ).ln();
let distance = mass / c * ( ( ( old_vel * (c/acc / mass).sqrt()).atanh() + dt* (c * acc / mass).sqrt()).cosh() ).ln();
let distance2 = mass / c * ( ( ( vel * (c/acc / mass).sqrt()).atanh() + dt* (c * acc / mass).sqrt()).cosh() ).ln();
let diff = distance2 - distance;
let diff = distance - distance_last;
let pos = pos + diff;
//if ((i+1) as f64 *dt * 10.0).round() as i64 % 2 == 0 {
println!("[{:0>2.1}]: move_dir: {:0>1.1}, acc: {:0>4.4}, vel: {:0>4.4}, dist: {:0>7.4}, dist: {:0>7.4}, pos: {:0>7.4}, c: {:0>4.4}", (i+1) as f64 *dt, move_dir, acc, vel, distance, distance2, pos, c);
println!("[{:0>2.1}]: move_dir: {:0>1.1}, acc: {:0>4.4}, vel: {:0>4.4}, dist: {:0>7.4}, dist: {:0>7.4}, pos: {:0>7.4}, c: {:0>4.4}", (i+1) as f64 *dt, move_dir, acc, vel, distance_last, distance, pos, c);
//}
(acc, vel, pos)
};