77 lines
3 KiB
Python
77 lines
3 KiB
Python
# The MIT License (MIT)
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#
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# Copyright (c) 2020 Kattni Rembor for Adafruit Industries
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#
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# Permission is hereby granted, free of charge, to any person obtaining a copy
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# of this software and associated documentation files (the "Software"), to deal
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# in the Software without restriction, including without limitation the rights
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# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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# copies of the Software, and to permit persons to whom the Software is
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# furnished to do so, subject to the following conditions:
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#
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# The above copyright notice and this permission notice shall be included in
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# all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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# THE SOFTWARE.
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"""
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`adafruit_led_animation.animation.rainbowchase`
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================================================================================
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Rainbow chase animation for CircuitPython helper library for LED animations.
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* Author(s): Kattni Rembor
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Implementation Notes
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--------------------
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**Hardware:**
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* `Adafruit NeoPixels <https://www.adafruit.com/category/168>`_
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* `Adafruit DotStars <https://www.adafruit.com/category/885>`_
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**Software and Dependencies:**
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* Adafruit CircuitPython firmware for the supported boards:
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https://circuitpython.org/downloads
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"""
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from adafruit_led_animation.color import colorwheel
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from adafruit_led_animation.animation.chase import Chase
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class RainbowChase(Chase):
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"""
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Chase pixels in one direction, like a theater marquee but with rainbows!
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:param pixel_object: The initialised LED object.
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:param float speed: Animation speed rate in seconds, e.g. ``0.1``.
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:param color: Animation color in ``(r, g, b)`` tuple, or ``0x000000`` hex format.
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:param size: Number of pixels to turn on in a row.
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:param spacing: Number of pixels to turn off in a row.
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:param reverse: Reverse direction of movement.
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:param step: How many colors to skip in `colorwheel` per bar (default 8)
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"""
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# pylint: disable=too-many-arguments
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def __init__(
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self, pixel_object, speed, size=2, spacing=3, reverse=False, name=None, step=8,
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):
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self._num_colors = 256 // step
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self._colors = [colorwheel(n % 256) for n in range(0, 512, step)]
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self._color_idx = 0
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super().__init__(pixel_object, speed, 0, size, spacing, reverse, name)
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def bar_color(self, n, pixel_no=0):
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return self._colors[self._color_idx - (n % len(self._colors))]
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def on_cycle_complete(self):
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self._color_idx = (self._color_idx + self._direction) % len(self._colors)
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super().on_cycle_complete()
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