A simple star field.

ui.py

@@ -0,0 +1,62 @@
+from fractions import Fraction as ratio
+from tkinter import *
+from PIL import Image
+from PIL.ImageTk import PhotoImage
+
+
+
+class App:
+    '''
+    A canvas with scrolling support.
+    '''
+
+    def __init__(self, master=None, *canvas_args, **canvas_kw):
+        frame = self.frame = Frame(root, bg='green')
+        frame.rowconfigure(0, weight=1)
+        frame.columnconfigure(0, weight=1)
+
+        C = self.canvas = Canvas(frame, *canvas_args, **canvas_kw)
+
+        scrollY = self.scrollY = Scrollbar(
+            frame,
+            orient=VERTICAL,
+            command=C.yview,
+            )
+        C['yscrollcommand'] = scrollY.set
+
+        scrollX = self.scrollX = Scrollbar(
+            frame,
+            orient=HORIZONTAL,
+            command=C.xview,
+            )
+        C['xscrollcommand'] = scrollX.set
+
+        C.grid(row=0, column=0, sticky=N+S+E+W)
+        scrollY.grid(row=0, column=1, sticky=N+S)
+        scrollX.grid(row=1, column=0, sticky=E+W)
+
+        C.bind("<Configure>", self.handle_canvas_resize)
+
+    def handle_canvas_resize(self, event):
+        print(event)
+
+
+
+
+from random import randint, expovariate
+
+width, height = 10240, 7680
+root = Tk()
+app = App(root, bg='black', scrollregion=(0, 0, width, height))
+app.frame.pack(expand=True, fill=BOTH)
+
+
+for _ in range(1000):
+    x, y = randint(0, width - 1), randint(0, height - 1)
+    #radius = randint(2, 10) // 2
+    radius = round(1 + expovariate(1))
+    app.canvas.create_oval(
+        x - radius, y - radius,
+        x + radius, y + radius,
+        fill='yellow',
+        )