kopia lustrzana https://github.com/pimoroni/pimoroni-pico
58 wiersze
1.5 KiB
Python
58 wiersze
1.5 KiB
Python
'''
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calc.py
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Graphical demo for the GFX Pack with Raspberry Pi Pico
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This example draws a nice sine wave on the display,
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reminiscent of the graphical calculators from the 90s.
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'''
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from math import radians, sin
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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(1.0) # Turns on the white component of the backlight
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gp.set_backlight(0, 0, 0) # Leaves the other backlight colours off
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def draw_axis():
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display.line(0, 32, 128, 32)
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display.line(64, 8, 64, 56)
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for i in range(8):
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display.line(64, (i * 12) + 8, 67, (i * 12) + 8)
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display.line((i * 16), 32, (i * 16), 34)
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def draw_sine(offset=0, vlines=False):
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for x in range(128):
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angle = 720 / 128 * x
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y = int(32 - (sin(radians(angle + offset)) * 24))
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display.pixel(x, y)
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if vlines:
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if x % 2 == 0:
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display.line(x, 32, x, y)
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def draw_text():
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display.text("Remember A-Level Maths!", 0, 0, WIDTH, 1)
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display.text("y = sin(x)", 0, HEIGHT - 6, scale=1)
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# measure this text so we can right orientate it
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textwidth = display.measure_text("x = -360°:360°", scale=1)
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display.text("x = -360°:360°", WIDTH - textwidth, HEIGHT - 6, scale=1)
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# Clear display
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display.set_pen(0)
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display.clear()
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# Set pen to black
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display.set_pen(15)
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# Draw the details in the PicoGraphics frame buffer
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draw_axis()
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draw_sine(0, True)
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draw_text()
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# Update the display
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display.update()
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