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145 lines
4.2 KiB
Python
145 lines
4.2 KiB
Python
"""ILI9341 demo (CircuitPython Text, Shape & Sprite)."""
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import board
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from busio import SPI
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from digitalio import DigitalInOut
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from ili9341 import Display, color565
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from xglcd_font import XglcdFont
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from time import monotonic, sleep
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from sys import exit, implementation
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class BouncingSprite(object):
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"""Bouncing Sprite."""
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def __init__(self, path, w, h, screen_width, screen_height,
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speed, display):
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"""Initialize sprite.
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Args:
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path (string): Path of sprite image.
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w, h (int): Width and height of image.
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screen_width (int): Width of screen.
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screen_height (int): Width of height.
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size (int): Square side length.
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speed(int): Initial XY-Speed of sprite.
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display (ILI9341): display object.
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color (int): RGB565 color value.
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"""
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self.buf = display.load_sprite(path, w, h)
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self.w = w
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self.h = h
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self.screen_width = screen_width
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self.screen_height = screen_height
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self.display = display
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self.x_speed = speed
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self.y_speed = speed
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self.x = self.screen_width // 2
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self.y = self.screen_height // 2
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self.prev_x = self.x
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self.prev_y = self.y
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def update_pos(self):
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"""Update sprite speed and position."""
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x = self.x
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y = self.y
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w = self.w
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h = self.h
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x_speed = abs(self.x_speed)
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y_speed = abs(self.y_speed)
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if x + w + x_speed >= self.screen_width:
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self.x_speed = -x_speed
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elif x - x_speed < 0:
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self.x_speed = x_speed
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if y + h + y_speed >= self.screen_height:
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self.y_speed = -y_speed
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elif y - y_speed <= 20:
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self.y_speed = y_speed
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self.prev_x = x
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self.prev_y = y
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self.x = x + self.x_speed
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self.y = y + self.y_speed
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def draw(self):
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"""Draw sprite."""
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x = self.x
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y = self.y
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prev_x = self.prev_x
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prev_y = self.prev_y
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w = self.w
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h = self.h
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x_speed = abs(self.x_speed)
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y_speed = abs(self.y_speed)
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# Determine direction and remove previous portion of sprite
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if prev_x > x:
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# Left
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self.display.fill_vrect(x + w, prev_y, x_speed, h, 0)
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elif prev_x < x:
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# Right
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self.display.fill_vrect(x - x_speed, prev_y, x_speed, h, 0)
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if prev_y > y:
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# Upward
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self.display.fill_vrect(prev_x, y + h, w, y_speed, 0)
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elif prev_y < y:
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# Downward
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self.display.fill_vrect(prev_x, y - y_speed, w, y_speed, 0)
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self.display.draw_sprite(self.buf, x, y, w, h)
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def test():
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"""CircuitPython Text, Shape & Sprite"""
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if implementation.name != 'circuitpython':
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print()
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print('This demo is for CircuitPython only!')
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exit()
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try:
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# Configuratoin for CS and DC pins:
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cs_pin = DigitalInOut(board.P0_15)
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dc_pin = DigitalInOut(board.P0_17)
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rst_pin = DigitalInOut(board.P0_20)
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# Setup SPI bus using hardware SPI:
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spi = SPI(clock=board.P0_24, MOSI=board.P0_22)
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# Create the ILI9341 display:
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display = Display(spi, dc=dc_pin, cs=cs_pin, rst=rst_pin)
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display.clear()
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# Load Fixed Font
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fixed = XglcdFont('fonts/FixedFont5x8.c', 5, 8, letter_count=96)
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# Title
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WIDTH = 128
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text = 'CircuitPython Demo'
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# Measure text and center
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length = fixed.measure_text(text)
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x = int((WIDTH / 2) - (length / 2))
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display.draw_text(x, 6, text, fixed, color565(255, 255, 0))
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# Draw title outline
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display.draw_rectangle(0, 0, 127, 20, color565(0, 255, 0))
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# Load sprite
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logo = BouncingSprite('images/blinka45x48.raw',
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45, 48, 239, 319, 1, display)
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while True:
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timer = monotonic()
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logo.update_pos()
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logo.draw()
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# Attempt to set framerate to 30 FPS
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timer_dif = .033333333 - (monotonic() - timer)
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if timer_dif > 0:
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sleep(timer_dif)
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except KeyboardInterrupt:
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display.cleanup()
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test()
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