[ts] Port of commit 877e705. Fix NaN in IKConstraint due to fp precis…

…ion.
EsotericSoftware · Aug 7, 2024 · e4df0c0 · e4df0c0
1 parent 877e705
commit e4df0c0
Showing 1 changed file with 3 additions and 2 deletions.
diff --git a/spine-ts/spine-core/src/IkConstraint.ts b/spine-ts/spine-core/src/IkConstraint.ts
@@ -270,8 +270,9 @@ export class IkConstraint implements Updatable {
 				q = -(c1 + q) * 0.5;
 				let r0 = q / c2, r1 = c / q;
 				let r = Math.abs(r0) < Math.abs(r1) ? r0 : r1;
-				if (r * r <= dd) {
-					y = Math.sqrt(dd - r * r) * bendDir;
+				r0 = dd - r * r;
+				if (r0 >= 0) {
+					y = Math.sqrt(r0) * bendDir;
 					a1 = ta - Math.atan2(y, r);
 					a2 = Math.atan2(y / psy, (r - l1) / psx);
 					break outer;