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| 1 | +# SPDX-FileCopyrightText: 2021 ladyada for Adafruit Industries |
| 2 | +# SPDX-License-Identifier: MIT |
| 3 | + |
| 4 | +""" |
| 5 | +This is an animation to demonstrate the use of Circle Setter Attribute. |
| 6 | +""" |
| 7 | + |
| 8 | +import time |
| 9 | +import gc |
| 10 | +import board |
| 11 | +import displayio |
| 12 | +from adafruit_display_shapes.circle import Circle |
| 13 | + |
| 14 | +# use built in display (MagTag, PyPortal, PyGamer, PyBadge, CLUE, etc.) |
| 15 | +# see guide for setting up external displays (TFT / OLED breakouts, RGB matrices, etc.) |
| 16 | +# https://learn.adafruit.com/circuitpython-display-support-using-displayio/display-and-display-bus |
| 17 | +display = board.DISPLAY |
| 18 | + |
| 19 | +# Make the display context |
| 20 | +main_group = displayio.Group(max_size=2) |
| 21 | + |
| 22 | +# Make a background color fill |
| 23 | +color_bitmap = displayio.Bitmap(display.width, display.height, 1) |
| 24 | +color_palette = displayio.Palette(1) |
| 25 | +color_palette[0] = 0xFFFFFF |
| 26 | +bg_sprite = displayio.TileGrid(color_bitmap, pixel_shader=color_palette, x=0, y=0) |
| 27 | +main_group.append(bg_sprite) |
| 28 | + |
| 29 | +# Setting up the Circle starting position |
| 30 | +posx = 50 |
| 31 | +posy = 50 |
| 32 | + |
| 33 | +# Define Circle characteristics |
| 34 | +circle_radius = 20 |
| 35 | +circle = Circle(posx, posy, circle_radius, fill=0x00FF00, outline=0xFF00FF) |
| 36 | +main_group.append(circle) |
| 37 | + |
| 38 | +# Define Circle Animation Steps |
| 39 | +delta_x = 2 |
| 40 | +delta_y = 2 |
| 41 | + |
| 42 | +# Showing the items on the screen |
| 43 | +display.show(main_group) |
| 44 | + |
| 45 | +while True: |
| 46 | + |
| 47 | + if circle.y + circle_radius >= display.height - circle_radius: |
| 48 | + delta_y = -1 |
| 49 | + if circle.x + circle_radius >= display.width - circle_radius: |
| 50 | + delta_x = -1 |
| 51 | + if circle.x - circle_radius <= 0 - circle_radius: |
| 52 | + delta_x = 1 |
| 53 | + if circle.y - circle_radius <= 0 - circle_radius: |
| 54 | + delta_y = 1 |
| 55 | + |
| 56 | + circle.x = circle.x + delta_x |
| 57 | + circle.y = circle.y + delta_y |
| 58 | + |
| 59 | + time.sleep(0.02) |
| 60 | + gc.collect() |
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