don't attempt to compute a NaN distance when ii is nullish

Fil · mbostock · commit e8ab37397b89 · 2023-08-10T12:43:20.000-07:00
diff --git a/src/interactions/pointer.js b/src/interactions/pointer.js
@@ -146,7 +146,7 @@ function pointerK(kx, ky, {x, y, px, py, maxRadius = 40, channels, render, ...op
           const rj = dx * dx + dy * dy;
           if (rj <= ri) (ii = j), (ri = rj);
         }
-        update(ii, Math.hypot(px(ii) - xp, py(ii) - yp));
+        update(ii, ii != null && Math.hypot(px(ii) - xp, py(ii) - yp));
       }
 
       function pointerdown(event) {

Original file line number	Diff line number	Diff line change
`@@ -146,7 +146,7 @@ function pointerK(kx, ky, {x, y, px, py, maxRadius = 40, channels, render, ...op`
`146`	`146`	`const rj = dx * dx + dy * dy;`
`147`	`147`	`if (rj <= ri) (ii = j), (ri = rj);`
`148`	`148`	`}`
`149`		`- update(ii, Math.hypot(px(ii) - xp, py(ii) - yp));`
	`149`	`+ update(ii, ii != null && Math.hypot(px(ii) - xp, py(ii) - yp));`
`150`	`150`	`}`
`151`	`151`
`152`	`152`	`function pointerdown(event) {`