72 lines
1.9 KiB
Python
72 lines
1.9 KiB
Python
# This example borrows a CircuitPython hsv_to_rgb function to cycle through some rainbows on GFX Pack's screen.
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# If you're into rainbows, HSV (Hue, Saturation, Value) is very useful!
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import time
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from gfx_pack import GfxPack
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gp = GfxPack()
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display = gp.display
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WIDTH, HEIGHT = display.get_bounds()
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display.set_backlight(0) # turn off the white component of the backlight
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DANCE_TIME = 1.0
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# From CPython Lib/colorsys.py
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def hsv_to_rgb(h, s, v):
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if s == 0.0:
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return v, v, v
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i = int(h * 6.0)
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f = (h * 6.0) - i
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p = v * (1.0 - s)
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q = v * (1.0 - s * f)
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t = v * (1.0 - s * (1.0 - f))
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i = i % 6
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if i == 0:
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return v, t, p
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if i == 1:
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return q, v, p
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if i == 2:
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return p, v, t
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if i == 3:
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return p, q, v
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if i == 4:
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return t, p, v
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if i == 5:
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return v, p, q
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# some variables to keep track of rainbows and dancing
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h = 0
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dancing = True
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last_time = time.ticks_ms()
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display.set_font("bitmap8")
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while True:
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time_ms = time.ticks_ms()
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h += 1
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r, g, b = [int(255 * c) for c in hsv_to_rgb(h / 360.0, 1.0, 1.0)] # rainbow magic
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gp.set_backlight(r, g, b) # Set backlight to a converted HSV value
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display.set_pen(0) # Set pen to white
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display.clear()
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display.set_pen(15) # Set pen to black
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# draw text and mans
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if dancing:
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display.text("pico!", 9, 5, WIDTH, 2)
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display.text("\\o\\ \\o\\ \\o\\ ", 7, 25, WIDTH, 2)
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display.text("\\o\\ \\o\\ \\o\\ ", 7, 45, WIDTH, 2)
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else:
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display.text("disco!", 69, 5, WIDTH, 2)
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display.text("/o/ /o/ /o/ ", 21, 25, WIDTH, 2)
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display.text("/o/ /o/ /o/ ", 21, 45, WIDTH, 2)
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# our main loop is faster than our dancing loop
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# this 'if' checks when it's time to dance
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if time_ms - last_time > DANCE_TIME * 1000:
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dancing = not dancing
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last_time = time_ms
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display.update()
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time.sleep(1.0 / 60)
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