From 10cde27a95b60aae0ceddc12463f3470446816b3 Mon Sep 17 00:00:00 2001
From: jdbao <jdbao@nustarnuclear.com>
Date: Thu, 19 Aug 2021 23:55:41 +0800
Subject: [PATCH] fix(matrix): union return type for function invert

---
 src/core/matrix.ts | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/core/matrix.ts b/src/core/matrix.ts
index 248c892fb..78009f815 100644
--- a/src/core/matrix.ts
+++ b/src/core/matrix.ts
@@ -116,7 +116,7 @@ export function scale(out: MatrixArray, a: MatrixArray, v: VectorArray): MatrixA
 /**
  * 求逆矩阵
  */
-export function invert(out: MatrixArray, a: MatrixArray): MatrixArray {
+export function invert(out: MatrixArray, a: MatrixArray): MatrixArray | null {
 
     const aa = a[0];
     const ac = a[2];
@@ -147,4 +147,4 @@ export function clone(a: MatrixArray): MatrixArray {
     const b = create();
     copy(b, a);
     return b;
-}
\ No newline at end of file
+}