diff --git a/gui.py b/gui.py
new file mode 100644
--- /dev/null
+++ b/gui.py
@@ -0,0 +1,69 @@
+import tkinter as tk
+from PIL import ImageTk
+import PIL
+import math
+
+class EPoint:
+  def __init__(self,x,y):
+    self.x=x
+    self.y=y
+  
+  def dist(self,a):
+    return math.sqrt((self.x-a.x)**2+(self.y-a.y)**2)
+
+class Application(tk.Frame):
+  def __init__(self, master=None):
+    self.corners=[]
+    
+    tk.Frame.__init__(self, master)
+    self.pack()
+    self.createWidgets()
+
+  def createWidgets(self):
+    self.hi_there = tk.Button(self)
+    self.hi_there["text"] = "Hello World\n(click me)"
+    self.hi_there["command"] = self.say_hi
+    self.hi_there.pack(side="top")
+    
+    self.canvas=tk.Canvas(self)
+    self.canvas.configure(width=480,height=360,background="#ff4444")
+    imgOrig=PIL.Image.open("images/1.jpg")
+    self.img=ImageTk.PhotoImage(imgOrig.resize((int(self.canvas['width']),int(self.canvas['height'])),resample=PIL.Image.BILINEAR))
+    
+    self.canvas.bind('<1>',lambda e: self.addCorner(e.x,e.y))
+    self.canvas.create_image(2,2,anchor="nw",image=self.img)
+    self.canvas.create_line(30,30,40,40,fill="#00ff00")
+    self.canvas.create_line(30,40,40,30,fill="#00ff00")
+    
+    self.canvas.pack()
+
+    self.QUIT = tk.Button(self, text="QUIT", fg="red", command=root.destroy)
+    self.QUIT.pack(side="bottom")
+
+  def say_hi(self):
+    print("hi there, everyone!")
+    
+  def addCorner(self,x,y):
+    a=EPoint(x,y)
+    for i,c in enumerate(self.corners): # move an improperly placed point
+      if a.dist(c)<20:
+        self.corners[i]=a
+        return
+    
+    if len(self.corners)<4: # add a new corner
+      self.corners.append(a)
+      return
+    
+    index,minDist=0,float('inf') # replace the corner closest to the clicked point
+    for i,c in enumerate(self.corners):
+      if a.dist(c)<minDist:
+        index,minDist=i,a.dist(c)
+    
+    self.corners[index]=a
+    
+  def redrawGrid(self):
+    pass
+
+root = tk.Tk()
+app = Application(master=root)
+app.mainloop()