refactor: use index_map for the Circle span to preserve the order of the circles being inserted

1 files changed, 7 insertions, 0 deletions

diff --git a/packages/svgbob/src/buffer/fragment_buffer/fragment/circle.rs b/packages/svgbob/src/buffer/fragment_buffer/fragment/circle.rs
index 1cf22f9..1388a2b 100644
--- a/packages/svgbob/src/buffer/fragment_buffer/fragment/circle.rs
+++ b/packages/svgbob/src/buffer/fragment_buffer/fragment/circle.rs
@@ -2,6 +2,7 @@ use crate::{fragment::Bounds, util, Cell, Point};
 use nalgebra::Point2;
 use parry2d::shape::ConvexPolygon;
 use parry2d::shape::Polyline;
+use std::hash::{Hash, Hasher};
 use std::{cmp::Ordering, fmt};
 
 use sauron::{
@@ -17,6 +18,12 @@ pub struct Circle {
     pub is_filled: bool,
 }
 
+impl Hash for Circle {
+    fn hash<H: Hasher>(&self, state: &mut H) {
+        ((self.radius * 2.0) as i32).hash(state);
+    }
+}
+
 impl Circle {
     pub(crate) fn new(center: Point, radius: f32, is_filled: bool) -> Self {
         Circle {