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Mock_DotStar.py
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Mock_DotStar.py
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"""
A drop in replacment for the Adafruit_DotStar module.
It allows me to to visualize what the LED strip may look like, without actually having one.
"""
from __future__ import print_function
import graphics
class Adafruit_DotStar(object):
"A mock implementation of the Adafruit_DotStart that simulates LEDs in the UI"
_LED_SIZE = 30
_WINDOW_HEIGHT = 300
_WINDOW_WIDTH = 800
def __init__(self, numPixels, a=None, order=None):
print("Inside initializer")
self._numPixels = numPixels
self._pixels = [0] * numPixels
self._win = None
self._leds = []
print(self._pixels)
def getPixel(self, index):
"""Returns the color value of the given pixel."""
return self._pixels(index)
def begin(self):
"""Opens the Mock_DotStar window."""
print("Starting Mock_DotStar")
self._win = graphics.GraphWin("midi-light-py", self._WINDOW_WIDTH, self._WINDOW_HEIGHT)
self._win.setBackground("black")
leds_per_row = self._WINDOW_WIDTH // (self._LED_SIZE)
x = 0
y = 0
for i, pixel in enumerate(self._pixels):
x = (i % leds_per_row) * self._LED_SIZE
y = (i // leds_per_row) * self._LED_SIZE
block = graphics.Rectangle(graphics.Point(x, y), graphics.Point(x + self._LED_SIZE - 1, y + self._LED_SIZE - 1))
r, g, b = ((pixel >> 16) & 255, (pixel >> 8) & 255, pixel & 255)
block.setFill(graphics.color_rgb(r, g, b))
block.draw(self._win)
t = graphics.Text(graphics.Point(x + self._LED_SIZE // 2, y + self._LED_SIZE // 2), str(i))
t.setSize(10)
t.setTextColor("white")
t.draw(self._win)
self._leds.append(block)
def setBrightness(self, brightness):
"""Sets the brightness for the whole strip. Not implemented."""
print("setBrightness called in Mock_DotStar. Not implemented.")
def setPixelColor(self, index, color_or_r, g=None, b=None):
"""Sets the given LED color value. To be compatible with DotStart library, you can either pass just the color value or r,g,b values."""
if g is None:
self._pixels[index] = color_or_r
else:
self._pixels[index] = b + (g << 8) + (color_or_r << 16)
def clear(self):
"""Reset all LED values to 0 (black/off)."""
print("Clearing strip data")
# Set strip data to 'off' (just clears buffer, does not write to strip)
self._pixels = [0] * self._numPixels
def close(self):
"""Closes the LED window. """
if not self._win.closed:
self._win.close()
def show(self):
"""Renders the current state of the LEDs to screen."""
for led, pixel in zip(self._leds, self._pixels):
r, g, b = ((pixel >> 16) & 255, (pixel >> 8) & 255, pixel & 255)
led.setFill(graphics.color_rgb(r, g, b))