colin/fdtd-coremem
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CurlStimulus: re-use the HasCrossSection trait code

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i believe this inverts the sign, but it also looks more correct this way
so i'm not immediately correcting that in this patch.
will backfill tests to verify.
This commit is contained in:
colin
2022-08-09 22:14:38 -07:00
parent 1771973c6d
commit 520e9d9f68
1 changed files with 2 additions and 6 deletions
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8
crates/coremem/src/stim.rs
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@@ -1,6 +1,6 @@
use crate::real::*;
use crate::cross::vec::Vec3;
use crate::geom::{Meters, Region, Torus};
use crate::geom::{HasCrossSection as _, Meters, Region, Torus};
use rand;
/// field densities
@@ -162,12 +162,8 @@ impl<R, T> CurlStimulus<R, T> {
impl<T: TimeVarying1 + Sync> AbstractStimulus for CurlStimulus<Torus, T> {
fn at(&self, t_sec: f32, pos: Meters) -> Fields {
if self.region.contains(pos) {
let center = self.region.center();
let axis = self.region.axis();
let FieldMags { e, h } = self.stim.at(t_sec);
let from_center_to_point = *pos - *center;
// TODO: is this inverted?
let rotational = from_center_to_point.cross(*axis);
let rotational = self.region.cross_section_normal(pos).norm();
let impulse_e = rotational.with_mag(e.cast()).unwrap_or_default();
let impulse_h = rotational.with_mag(h.cast()).unwrap_or_default();
Fields {