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Refactor

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This commit is contained in:
Hanno Braun 2023-02-15 14:49:30 +01:00
parent 0ef7909a4f
commit 6a442037d3
1 changed files with 5 additions and 3 deletions
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8
crates/fj-math/src/arc.rs
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@ -1,6 +1,6 @@
use num_traits::Float;
use crate::{Point, Scalar};
use crate::{Point, Scalar, Vector};
/// Calculated geometry that is useful when dealing with an arc
pub struct Arc {
@ -60,11 +60,13 @@ impl Arc {
let [[x0, y0], [x1, y1]] = [p0, p1].map(|p| p.coords.components);
let unit_vector_p0_to_p1 =
(p1 - p0) / distance_between_endpoints * uv_factor;
let unit_vector_midpoint_to_center =
Vector::from([-unit_vector_p0_to_p1.v, unit_vector_p0_to_p1.u]);
// (cx, cy) is the center of the circle
let cx = ((x0 + x1) / 2.)
- distance_center_to_midpoint * unit_vector_p0_to_p1.v;
+ distance_center_to_midpoint * unit_vector_midpoint_to_center.u;
let cy = ((y0 + y1) / 2.)
+ distance_center_to_midpoint * unit_vector_p0_to_p1.u;
+ distance_center_to_midpoint * unit_vector_midpoint_to_center.v;
let start_angle = (y0 - cy).atan2(x0 - cx);
let end_angle = (y1 - cy).atan2(x1 - cx) + end_angle_offset;
Self {