diff --git a/drawing/drawing.pde b/drawing/drawing.pde
index aa773dd..bdca3b8 100644
--- a/drawing/drawing.pde
+++ b/drawing/drawing.pde
@@ -1,8 +1,10 @@
+
 final int DRAW_NORMAL=1;
 final int DRAW_DRAG=2;
 final int Vertex_Rad=8;
 // define parameters for rectangular button
-  int rectX=500, rectY=500;
+  int rectX1=500, rectY1=500;
+  int rectX2=500, rectY2=550;
   int rectwidth=80;
   int rectheight=40;
   color rectColor;
@@ -16,8 +18,8 @@ void setup() {
   background(255);
   rectColor=(150);
   rectHighlight=color(255,0,0);
-  rectX=500;
-  rectY=500;
+  rectX1=500;
+  rectY1=500;
   noStroke();
 }
 Graph G=new Graph();
@@ -70,9 +72,10 @@ void mouseDragged(){
   
 }
 void mousePressed(){
-  if(vertex_under_mouse==null && !check_mouse_over_button(rectX,rectY,rectheight,rectwidth)){
+  if(vertex_under_mouse==null && !check_mouse_over_button(rectX1,rectY1,rectheight,rectwidth) &&!check_mouse_over_button(rectX2,rectY2,rectheight,rectwidth)){
     G.V.add(new Vertex(mouseX, mouseY,true));
   }
+
 }
 
 void mouseReleased(){
@@ -92,46 +95,63 @@ void mouseReleased(){
 
 void mouse_over_BUTTON(){
 
-  if(check_mouse_over_button(rectX,rectY,rectheight,rectwidth)){
+  if(check_mouse_over_button(rectX1,rectY1,rectheight,rectwidth)){
     fill(255,0,0);
   }else {
   fill(rectColor);
   }
    noStroke();
-   rect(rectX,rectY,rectwidth,rectheight);
+   rect(rectX1,rectY1,rectwidth,rectheight);
+   textSize(10);
+   fill(0, 0, 0);
+   text("Initial Graph",rectX1+rectwidth/8,rectY1+rectheight/2);
+   
+  if(check_mouse_over_button(rectX2,rectY2,rectheight,rectwidth))
+    fill(255,0,0);
+  else 
+   fill(rectColor);
+   
+   rect(rectX2,rectY2,rectwidth,rectheight);
    textSize(10);
    fill(0, 0, 0);
-   text("Initial Graph",rectX+rectwidth/8,rectY+rectheight/2);
- 
+   text("Reset",rectX2+rectwidth/8,rectY2+rectheight/2);
 }
 
 
 
 void mouseClicked(){
- if(check_mouse_over_button(rectX,rectY,rectheight,rectwidth))
-  //draw edges should be implemented by pressing button. 
+ if(check_mouse_over_button(rectX1,rectY1,rectheight,rectwidth)){
+  //draw edges should be implemented by pressing button.
+    if (G.V.size()<=3) throw new RuntimeException("Requires at least 5 points"); 
+     ArrayList index=new ArrayList ();
     for(int i=0;i<G.V.size();i++){
-      ArrayList index=new ArrayList ();
       for(int r=0;r<G.V.size();r++){
         index.add(r);
-      }
+       }
       index.remove(i);
-        for(int j=0; j<3;j++){
-          stroke(0,0,255);
-          strokeWeight(2);
-          int k=int(random(index.size()));  
-          int l=(Integer)index.get(k);  
-          line(G.V.get(i).x,G.V.get(i).y,G.V.get(l).x,G.V.get(l).y);
-          //add the drawn edge
-          G.E.add(new Edge(G.V.get(i),G.V.get(l)));    
-          index.remove(k);
+     for(int j=0;j<=3;j++){
+         stroke(0,0,255);
+         strokeWeight(2);
+         int k=int(random(index.size()));  
+         int l=(Integer)index.get(k);  
+         println(l);
+           //add the drawn edge to the graph and the Vertex arraylist
+         //if(G.ValidNewEdge(G.V.get(i),G.V.get(l))){
+           G.E.add(new Edge(G.V.get(i),G.V.get(l)));     
+           line(G.V.get(i).x,G.V.get(i).y,G.V.get(l).x,G.V.get(l).y);
+           index.remove(k);
         }
       }
         //remove the repeatedly added edges from the edge list
-        for(int i=0;i<G.E.size();++i){
+     for(int i=0;i<G.E.size();++i){
          for(int j=0;j<G.E.size();++j)
            if(G.E.get(i).v2==G.E.get(j).v1 && G.E.get(i).v1==G.E.get(j).v2)
              G.E.remove(j);
          }
+     }
+       if(check_mouse_over_button(rectX2,rectY2,rectheight,rectwidth))
 
+          G.E.clear();
 }
+
+