From dea2957972a9df8603dafdd132e117caa2bacc4f Mon Sep 17 00:00:00 2001
From: cantbesure1 <cantbesure1@gmail.com>
Date: Mon, 6 Nov 2017 22:59:45 -0800
Subject: [PATCH] thickness bugfix

---
 sources/scripts/dotgrid.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sources/scripts/dotgrid.js b/sources/scripts/dotgrid.js
index 9c3890e..84b2153 100644
--- a/sources/scripts/dotgrid.js
+++ b/sources/scripts/dotgrid.js
@@ -174,7 +174,7 @@ function Dotgrid(width,height,grid_x,grid_y,block_x,block_y,thickness = 3,lineca
 
   this.mod_thickness = function(mod)
   {
-    this.thickness += mod;
+    this.thickness = Math.max(this.thickness+mod,0);
     this.draw();
   }