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