drawing.py

drawing.py

@@ -1,7 +1,7 @@
 # drawing.py
 # ----------
 # Nelson Mason
-# updated 9-19-2025
+# updated 9-21-2025
 # Due by 9-29-2025
 # (This is an animation of a sunrise.)
 
@@ -14,64 +14,66 @@ from superturtle.animation import animate
 # In the actual animation, the sun will start off entirely below the horizon,
 # (where the sky meets the ground), hidden by the ground, and will slowly rise (move up the screen),
 # with the sun, sky, and ground changing color. The disk of the sun will
-# be apparent only in the sky, as it rises. The elapsed_time will be linked to the
-# animation frames. I will be using color shading techniques in the animation.
+# be apparent only in the sky, as it rises. I will be using color shading techniques in the animation.
 
-def sky():    
+def sky():
+    begin_fill() # draw the sky
+    fillcolor("dark blue")   
     for x in range(2):
         forward(400)
         left(90)        
         forward(300)
         left(90)
+    end_fill()
 
 def ground():
+    begin_fill() # draw the ground
+    fillcolor("black")
     for x in range(2):
         forward(400)
         right(90)        
         forward(150)
         right(90)
-
-def sun():
-    circle(75,360)
-
-
-def sun_reposition():
-    left(90)
-    forward(20)
-    right(90)
-
-penup() # reposition the turtle before drawing the 3 objects
-right(180)
-forward(200)
-left(90)
-forward(50)
-left(90)
-pendown()
-
-begin_fill() # draw the sky
-fillcolor("dark blue")
-sky()
-end_fill()
-
-begin_fill() # draw the ground
-fillcolor("black")
-ground()
-end_fill()
-
-penup()
-right(90)
-forward(150)
-left(90)
-forward(200)
-pendown()
-
-# for frame in animate(40, loop=True):
-#   x = frame.interpolate(0,15)
-for x in range(15):
-    begin_fill() # draw the sun
-    fillcolor("red")
-    sun()
-    sun_reposition()
     end_fill()
 
-input()
+def sun():
+    begin_fill() # draw the sun
+    fillcolor("red")
+    circle(-62,360) 
+    end_fill()
+
+def sun_position(a): # this must be called to get the sun to move up (rise)
+    penup()
+    left(90)
+    forward(a)
+    right(90)
+    pendown()
+
+for frame in animate(frames=1000):
+    penup() # reposition the turtle before drawing the sky
+    right(180)
+    forward(200)
+    left(90)
+    forward(50)
+    left(90)
+    pendown()
+    sky()
+    penup() # reposition the turtle before drawing the sun
+    forward(200) # starting the drawing of the sun right on the horizon
+    # makes it easier to calculate everything else
+    pendown()
+    a = frame.interval=200 # the frames-to-interval ratio controls the animation speed
+    a = frame.interpolate(0, 275) # low and high positions of the sun as it rises
+    sun_position(a)
+    sun() # draws the sun   
+    penup() # reposition the turtle before drawing the ground
+    right(180)
+    forward(200)
+    left(90)
+    forward(+a) # increment to get to the correct starting point for 
+    # the next iteration(re-drawing) of the sun rising
+    left(90)
+    pendown()
+    ground() # I want the ground to hide the sun (overlay), but not the sky (obviously)
+
+input()