use Vec3.isFinite as name

src/mol-math/linear-algebra/3d/vec3.ts

 /**
- * Copyright (c) 2017-2022 mol* contributors, licensed under MIT, See LICENSE file for more info.
+ * Copyright (c) 2017-2023 mol* contributors, licensed under MIT, See LICENSE file for more info.
  *
  * @author David Sehnal <david.sehnal@gmail.com>
  * @author Alexander Rose <alexander.rose@weirdbyte.de>
@@ -24,6 +24,8 @@ import { Mat3 } from './mat3';
 import { Quat } from './quat';
 import { EPSILON } from './common';
 
+const _isFinite = isFinite;
+
 export { ReadonlyVec3 };
 
 interface Vec3 extends Array<number> { [d: number]: number, '@type': 'vec3', length: 3 }
@@ -48,8 +50,8 @@ namespace Vec3 {
         return out;
     }
 
-    export function hasUndetermined(a: Vec3): boolean {
-        return isFinite(a[0]) && isFinite(a[1]) && isFinite(a[2]);
+    export function isFinite(a: Vec3): boolean {
+        return _isFinite(a[0]) && _isFinite(a[1]) && _isFinite(a[2]);
     }
 
     export function hasNaN(a: Vec3) {

src/mol-math/linear-algebra/_spec/principal-axes.spec.ts

 /**
- * Copyright (c) 2019 mol* contributors, licensed under MIT, See LICENSE file for more info.
+ * Copyright (c) 2023 mol* contributors, licensed under MIT, See LICENSE file for more info.
  *
  * @author Gianluca Tomasello <giagitom@gmail.com>
  */

src/mol-math/linear-algebra/matrix/principal-axes.ts

 /**
- * Copyright (c) 2018-2022 mol* contributors, licensed under MIT, See LICENSE file for more info.
+ * Copyright (c) 2018-2023 mol* contributors, licensed under MIT, See LICENSE file for more info.
  *
  * @author Alexander Rose <alexander.rose@weirdbyte.de>
  * @author Gianluca Tomasello <giagitom@gmail.com>
@@ -124,9 +124,9 @@ namespace PrincipalAxes {
         const dirB = Vec3.setMagnitude(Vec3(), a.dirB, (d2a + d2b) / 2);
         const dirC = Vec3.setMagnitude(Vec3(), a.dirC, (d3a + d3b) / 2);
 
-        const okDirA = Vec3.hasUndetermined(dirA);
-        const okDirB = Vec3.hasUndetermined(dirB);
-        const okDirC = Vec3.hasUndetermined(dirC);
+        const okDirA = Vec3.isFinite(dirA);
+        const okDirB = Vec3.isFinite(dirB);
+        const okDirC = Vec3.isFinite(dirC);
 
         const origin = Vec3();
         const addCornerHelper = function (d1: number, d2: number, d3: number) {