WIP of neopixel mocking

mock_neopixel.py

class MockNeoPixel:
    SCALE = 16  # scale the imgcat (iTerm2) display by this much

    def __init__(self, pin, num_pixels):
        self.pin = pin
        self.num_pixels = num_pixels
        self.pixels = [(0, 0, 0) for i in range(self.num_pixels)]
        self.config = {}

    def __getitem__(self, k):
        return self.pixels[k]

    def __setitem__(self, k, v):
        self.pixels[k] = v

    def __len__(self):
        return len(self.pixels)

    def set_config(self, config):
        self.config = config

    def write(self):
        print(f"writing… {len(self.pixels)} pixels")

        if self.config:
            from imgcat import imgcat
            from PIL import Image

            w = self.config["PIXELS_W"]
            h = self.config["PIXELS_H"]
            im = Image.new("RGB", (w, h))

            # de-serpentine if serpentined
            pixels = (
                serpentine(self.pixels, w, h)
                if self.config["SERPENTINE"]
                else self.pixels
            )
            im.putdata([tuple(p) for p in pixels])
            im = im.resize((w * self.SCALE, h * self.SCALE), Image.NEAREST)
            imgcat(im)