[libgdx] Fix NaN in IKConstraint due to fp precision.

853b5ee
EsotericSoftware · Aug 7, 2024 · 877e705 · 877e705
1 parent b17595d
commit 877e705
Showing 1 changed file with 3 additions and 2 deletions.
diff --git a/spine-libgdx/spine-libgdx/src/com/esotericsoftware/spine/IkConstraint.java b/spine-libgdx/spine-libgdx/src/com/esotericsoftware/spine/IkConstraint.java
@@ -339,8 +339,9 @@ static public void apply (Bone parent, Bone child, float targetX, float targetY,
 				q = -(c1 + q) * 0.5f;
 				float r0 = q / c2, r1 = c / q;
 				float r = Math.abs(r0) < Math.abs(r1) ? r0 : r1;
-				if (r * r <= dd) {
-					y = (float)Math.sqrt(dd - r * r) * bendDir;
+				r0 = dd - r * r;
+				if (r0 >= 0) {
+					y = (float)Math.sqrt(r0) * bendDir;
 					a1 = ta - atan2(y, r);
 					a2 = atan2(y / psy, (r - l1) / psx);
 					break outer;