From 0e90aec8eacd9bc2d850ecca92582ded74c06f78 Mon Sep 17 00:00:00 2001
From: Devine Lu Linvega <aliceffekt@gmail.com>
Date: Tue, 8 May 2018 13:32:06 +1200
Subject: [PATCH] Minor change

---
 desktop/sources/scripts/dotgrid.js | 19 +++++++++++++++++--
 desktop/sources/scripts/tool.js    |  5 ++++-
 2 files changed, 21 insertions(+), 3 deletions(-)

diff --git a/desktop/sources/scripts/dotgrid.js b/desktop/sources/scripts/dotgrid.js
index 67c274b..6be48fc 100644
--- a/desktop/sources/scripts/dotgrid.js
+++ b/desktop/sources/scripts/dotgrid.js
@@ -487,8 +487,11 @@ function Dotgrid(width,height,grid_x,grid_y,block_x,block_y)
   this.paste = function(e)
   {
     var data = e.clipboardData.getData("text/source");
-    data = JSON.parse(data.trim());
-    dotgrid.tool.import(data);
+    if(is_json(data)){
+      data = JSON.parse(data.trim());  
+      dotgrid.tool.import(data);
+    }
+    
     this.draw();
   }
 
@@ -513,6 +516,18 @@ function Dotgrid(width,height,grid_x,grid_y,block_x,block_y)
     return {x:x,y:y};
   }
 
+
+  function is_json(text)
+  {
+    try{
+      JSON.parse(text);
+      return true;
+    }
+    catch (error){
+      return false;
+    }
+  }
+
   function pos_is_equal(a,b){ return a && b && a.x == b.x && a.y == b.y }
   function clamp(v, min, max) { return v < min ? min : v > max ? max : v; }
 }
diff --git a/desktop/sources/scripts/tool.js b/desktop/sources/scripts/tool.js
index fc0c4d8..901e5a3 100644
--- a/desktop/sources/scripts/tool.js
+++ b/desktop/sources/scripts/tool.js
@@ -265,7 +265,7 @@ function Tool()
     return html
   }
 
-  this.mirror_mod = function(vertex,angle,mirror_x = false,mirror_y = false)
+  this.mirror_mod = function(vertex,angle = 0,mirror_x = false,mirror_y = false)
   {
     if(!vertex){ return null; }
 
@@ -275,6 +275,9 @@ function Tool()
     if(mirror_y == true){
       return {x:vertex.x,y:(dotgrid.tool.settings.size.height - vertex.y)+(dotgrid.height/2)}
     }
+    if(angle == 0){
+      return vertex;
+    }
     return rotate_point(vertex.x,vertex.y,dotgrid.tool.settings.size.width/2,dotgrid.tool.settings.size.height/2,angle)
   }