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author | Martin Ashby <martin@martin-laptop.lan> | 2018-05-15 22:12:09 +0100 |
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committer | Martin Ashby <martin@martin-laptop.lan> | 2018-05-15 22:12:09 +0100 |
commit | 57e5ea1f424ea2567e10c3945d9273a92a547332 (patch) | |
tree | 8184c2c8bab04c1a15b28fcfa2c7b255223a98d5 /unicorn_hat_sim.py | |
download | unicornpaint-57e5ea1f424ea2567e10c3945d9273a92a547332.tar.gz unicornpaint-57e5ea1f424ea2567e10c3945d9273a92a547332.tar.bz2 unicornpaint-57e5ea1f424ea2567e10c3945d9273a92a547332.tar.xz unicornpaint-57e5ea1f424ea2567e10c3945d9273a92a547332.zip |
Basic should be working
Diffstat (limited to 'unicorn_hat_sim.py')
-rw-r--r-- | unicorn_hat_sim.py | 123 |
1 files changed, 123 insertions, 0 deletions
diff --git a/unicorn_hat_sim.py b/unicorn_hat_sim.py new file mode 100644 index 0000000..9d7d1a0 --- /dev/null +++ b/unicorn_hat_sim.py @@ -0,0 +1,123 @@ +import sys +import colorsys +import pygame.gfxdraw + +try: + import pygame +except ImportError: + print("To simulate a unicorn HAT on your computer, please pip install pygame") + +class UnicornHatSim(object): + def __init__(self, width, height, rotation_offset = 0): + # Compat with old library + self.AUTO = None + self.PHAT = None + + # Set some defaults + self.rotation_offset = rotation_offset + self.rotation(0) + self.pixels = [(0, 0, 0)] * width * height + self.pixel_size = 15 + self.width = width + self.height = height + self.window_width = width * self.pixel_size + self.window_height = height * self.pixel_size + + # Init pygame and off we go + pygame.init() + pygame.display.set_caption("Unicorn HAT simulator") + self.screen = pygame.display.set_mode([self.window_width, self.window_height]) + self.clear() + + def set_pixel(self, x, y, r, g, b): + i = (x * self.width) + y + self.pixels[i] = [int(r), int(g), int(b)] + + def get_pixels(self): + """Returns a 2d array of 3-tuple RGB values repsenting pixel colours """ + px = [] + for y in range(self.height): + row = [] + for x in range(self.width): + i = (x * self.width) + y + row.append(self.pixels[i]) + px.append(row) + return px + + def draw(self): + for event in pygame.event.get(): # User did something + if event.type == pygame.QUIT: + print("Exiting...") + sys.exit() + + for x in range(self.width): + for y in range(self.height): + self.draw_led(x, y) + + def show(self): + self.clear() + self.draw() + pygame.display.flip() + + def draw_led(self, x, y): + self.draw_gfxcircle(x,y) + + def draw_gfxcircle(self, x, y): + p = self.pixel_size + w_x = int(x * p + self.pixel_size / 2) + w_y = int((self.height - 1 - y) * p + self.pixel_size / 2) + r = int(self.pixel_size / 4) + color = self.pixels[self.index(x, y)] + pygame.gfxdraw.aacircle(self.screen, w_x, w_y, r, color) + pygame.gfxdraw.filled_circle(self.screen, w_x, w_y, r, color) + + def get_shape(self): + return (self.width, self.height) + + def brightness(self, *args): + pass + + def rotation(self, r): + self._rotation = int(round(r/90.0)) % 3 + + def clear(self): + self.screen.fill((0, 0, 0)) + + def get_rotation(self): + return self._rotation * 90 + + def set_layout(self, *args): + pass + + def set_pixel_hsv(self, x, y, h, s=1.0, v=1.0): + r, g, b = [int(n*255) for n in colorsys.hsv_to_rgb(h, s, v)] + self.set_pixel(x, y, r, g, b) + + def off(self): + print("Closing window") + pygame.quit() + + def index(self, x, y): + # Offset to match device rotation + rot = (self.get_rotation() + self.rotation_offset) % 360 + + if rot == 0: + xx = x + yy = y + elif rot == 90: + xx = self.height - 1 - y + yy = x + elif rot == 180: + xx = self.width - 1 - x + yy = self.height - 1 - y + elif rot == 270: + xx = y + yy = self.width - 1 - x + return (xx * self.width) + yy + +# SD hats works as expected +unicornhat = UnicornHatSim(8,8) +unicornphat = UnicornHatSim(8, 4) + +# Unicornhat HD seems to be the other way around (not that there's anything wrong with that), so we rotate it 180 deg +unicornhathd = UnicornHatSim(16, 16, 180)
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