132 lines
4.5 KiB
Python
132 lines
4.5 KiB
Python
# The MIT License (MIT)
|
|
#
|
|
# Copyright (c) 2019-2020 Roy Hooper
|
|
# Copyright (c) 2020 Kattni Rembor for Adafruit Industries
|
|
#
|
|
# Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
# of this software and associated documentation files (the "Software"), to deal
|
|
# in the Software without restriction, including without limitation the rights
|
|
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
# copies of the Software, and to permit persons to whom the Software is
|
|
# furnished to do so, subject to the following conditions:
|
|
#
|
|
# The above copyright notice and this permission notice shall be included in
|
|
# all copies or substantial portions of the Software.
|
|
#
|
|
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
|
# THE SOFTWARE.
|
|
"""
|
|
`adafruit_led_animation.animation.chase`
|
|
================================================================================
|
|
|
|
TODO
|
|
|
|
* Author(s): Roy Hooper, Kattni Rembor
|
|
|
|
"""
|
|
|
|
from math import ceil
|
|
|
|
from adafruit_led_animation.animation import Animation
|
|
|
|
|
|
class Chase(Animation):
|
|
"""
|
|
Chase pixels in one direction in a single color, like a theater marquee sign.
|
|
|
|
:param pixel_object: The initialised LED object.
|
|
:param float speed: Animation speed rate in seconds, e.g. ``0.1``.
|
|
:param color: Animation color in ``(r, g, b)`` tuple, or ``0x000000`` hex format.
|
|
:param size: Number of pixels to turn on in a row.
|
|
:param spacing: Number of pixels to turn off in a row.
|
|
:param reverse: Reverse direction of movement.
|
|
"""
|
|
|
|
# pylint: disable=too-many-arguments
|
|
def __init__(
|
|
self, pixel_object, speed, color, size=2, spacing=3, reverse=False, name=None
|
|
):
|
|
self._size = size
|
|
self._spacing = spacing
|
|
self._repeat_width = size + spacing
|
|
self._num_repeats = ceil(len(pixel_object) / self._repeat_width)
|
|
self._overflow = len(pixel_object) % self._repeat_width
|
|
self._direction = 1 if not reverse else -1
|
|
self._reverse = reverse
|
|
self._offset = 0
|
|
|
|
def _resetter():
|
|
self._offset = 0
|
|
self._reverse = reverse
|
|
self._direction = 1 if not reverse else -1
|
|
|
|
self._reset = _resetter
|
|
|
|
super().__init__(pixel_object, speed, color, name=name)
|
|
|
|
cycle_complete_supported = True
|
|
|
|
@property
|
|
def reverse(self):
|
|
"""
|
|
Whether the animation is reversed
|
|
"""
|
|
return self._reverse
|
|
|
|
@reverse.setter
|
|
def reverse(self, value):
|
|
self._reverse = value
|
|
self._direction = -1 if self._reverse else 1
|
|
|
|
def draw(self):
|
|
def bar_colors():
|
|
bar_no = 0
|
|
for i in range(self._offset, 0, -1):
|
|
if i > self._spacing:
|
|
yield self.bar_color(bar_no, i)
|
|
else:
|
|
yield self.space_color(bar_no, i)
|
|
bar_no = 1
|
|
while True:
|
|
for bar_pixel in range(self._size):
|
|
yield self.bar_color(bar_no, bar_pixel)
|
|
for space_pixel in range(self._spacing):
|
|
yield self.space_color(bar_no, space_pixel)
|
|
bar_no += 1
|
|
|
|
colorgen = bar_colors()
|
|
self.pixel_object[:] = [next(colorgen) for _ in self.pixel_object]
|
|
self.show()
|
|
|
|
if self.draw_count % len(self.pixel_object) == 0:
|
|
self.cycle_complete()
|
|
self._offset = (self._offset + self._direction) % self._repeat_width
|
|
|
|
def bar_color(self, n, pixel_no=0): # pylint: disable=unused-argument
|
|
"""
|
|
Generate the color for the n'th bar_color in the Chase
|
|
|
|
:param n: The pixel group to get the color for
|
|
:param pixel_no: Which pixel in the group to get the color for
|
|
"""
|
|
return self.color
|
|
|
|
def space_color(self, n, pixel_no=0): # pylint: disable=unused-argument,no-self-use
|
|
"""
|
|
Generate the spacing color for the n'th bar_color in the Chase
|
|
|
|
:param n: The pixel group to get the spacing color for
|
|
:param pixel_no: Which pixel in the group to get the spacing color for
|
|
"""
|
|
return 0
|
|
|
|
def reset(self):
|
|
"""
|
|
Reset the animation.
|
|
"""
|
|
self._reset()
|