Fix negative index error

williamngan · Aug 13, 2018 · 09c6378 · 09c6378
1 parent 5be8f59
commit 09c6378
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/src/Create.ts b/src/Create.ts
@@ -238,8 +238,8 @@ export class Noise extends Pt {
    */
   noise2D() {
 
-    let i = Math.floor( this._n[0] ) % 255;
-    let j = Math.floor( this._n[1] ) % 255;
+    let i = Math.max(0, Math.floor( this._n[0] )) % 255;
+    let j = Math.max(0, Math.floor( this._n[1] )) % 255;
     let x = (this._n[0] % 255) - i;
     let y = (this._n[1] % 255) - j;