Timed animation

adafruit_led_animation/animation/volume.py

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+# SPDX-FileCopyrightText: 2020 Gamblor21
+#
+# SPDX-License-Identifier: MIT
+"""
+`adafruit_led_animation.animation.volume`
+================================================================================
+Volume animation for CircuitPython helper library for LED animations.
+* Author(s): Mark Komus
+Implementation Notes
+--------------------
+**Hardware:**
+* `Adafruit NeoPixels <https://www.adafruit.com/category/168>`_
+* `Adafruit DotStars <https://www.adafruit.com/category/885>`_
+**Software and Dependencies:**
+* Adafruit CircuitPython firmware for the supported boards:
+  https://circuitpython.org/downloads
+"""
+
+from adafruit_led_animation.animation import Animation
+
+
+def map_range(x, in_min, in_max, out_min, out_max):
+    """
+    Maps a number from one range to another.
+    :return: Returns value mapped to new range
+    :rtype: float
+    """
+    mapped = (x - in_min) * (out_max - out_min) / (in_max - in_min) + out_min
+    if out_min <= out_max:
+        return max(min(mapped, out_max), out_min)
+
+    return min(max(mapped, out_max), out_min)
+
+
+class Volume(Animation):
+    """
+    Animate the brightness and number of pixels based on volume.
+    :param pixel_object: The initialised LED object.
+    :param float speed: Animation update speed in seconds, e.g. ``0.1``.
+    :param brightest_color: Color at max volume ``(r, g, b)`` tuple, or ``0x000000`` hex format
+    :param decoder: a MP3Decoder object that the volume will be taken from
+    :param float max_volume: what volume is considered maximum where everything is lit up
+    """
+
+    # pylint: disable=too-many-arguments
+    def __init__(
+        self, pixel_object, speed, brightest_color, decoder, max_volume=500, name=None
+    ):
+        self._decoder = decoder
+        self._num_pixels = len(pixel_object)
+        self._max_volume = max_volume
+        self._brightest_color = brightest_color
+        super().__init__(pixel_object, speed, brightest_color, name=name)
+
+    def set_brightest_color(self, brightest_color):
+        """
+        Animate the brightness and number of pixels based on volume.
+        :param brightest_color: Color at max volume ``(r, g, b)`` tuple, or ``0x000000`` hex format
+        """
+        self._brightest_color = brightest_color
+
+    def draw(self):
+        red = int(
+            map_range(
+                self._decoder.rms_level,
+                0,
+                self._max_volume,
+                0,
+                self._brightest_color[0],
+            )
+        )
+        green = int(
+            map_range(
+                self._decoder.rms_level,
+                0,
+                self._max_volume,
+                0,
+                self._brightest_color[1],
+            )
+        )
+        blue = int(
+            map_range(
+                self._decoder.rms_level,
+                0,
+                self._max_volume,
+                0,
+                self._brightest_color[2],
+            )
+        )
+
+        lit_pixels = int(
+            map_range(self._decoder.rms_level, 0, self._max_volume, 0, self._num_pixels)
+        )
+        if lit_pixels > self._num_pixels:
+            lit_pixels = self._num_pixels
+
+        self.pixel_object[0:lit_pixels] = [(red, green, blue)] * lit_pixels
+        self.pixel_object[lit_pixels : self._num_pixels] = [(0, 0, 0)] * (
+            self._num_pixels - lit_pixels
+        )

adafruit_led_animation/timedsequence.py

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+# SPDX-FileCopyrightText: 2020 Gamblor21
+#
+# SPDX-License-Identifier: MIT
+"""
+`adafruit_led_animation.timedsequence`
+================================================================================
+
+Animation timed sequence helper for CircuitPython helper library for LED animations.
+
+
+* Author(s): Mark Komus
+
+Implementation Notes
+--------------------
+
+**Hardware:**
+
+* `Adafruit NeoPixels <https://www.adafruit.com/category/168>`_
+* `Adafruit DotStars <https://www.adafruit.com/category/885>`_
+
+**Software and Dependencies:**
+
+* Adafruit CircuitPython firmware for the supported boards:
+  https://circuitpython.org/downloads
+
+"""
+
+from adafruit_led_animation.sequence import AnimationSequence
+from . import MS_PER_SECOND
+
+
+class TimedAnimationSequence(AnimationSequence):
+    """
+    A sequence of Animations to run in succession, each animation running for an
+    individual amount of time.
+    :param members: The animation objects or groups followed by how long the animation
+                    should run in seconds.
+    :param bool auto_clear: Clear the pixels between animations. If ``True``, the current animation
+                            will be cleared from the pixels before the next one starts.
+                            Defaults to ``False``.
+    :param bool random_order: Activate the animations in a random order. Defaults to ``False``.
+    :param bool auto_reset: Automatically call reset() on animations when changing animations.
+    .. code-block:: python
+        import board
+        import neopixel
+        from adafruit_led_animation.timedsequence import TimedAnimationSequence
+        import adafruit_led_animation.animation.comet as comet_animation
+        import adafruit_led_animation.animation.sparkle as sparkle_animation
+        import adafruit_led_animation.animation.blink as blink_animation
+        import adafruit_led_animation.color as color
+        strip_pixels = neopixel.NeoPixel(board.A1, 30, brightness=1, auto_write=False)
+        blink = blink_animation.Blink(strip_pixels, 0.2, color.RED)
+        comet = comet_animation.Comet(strip_pixels, 0.1, color.BLUE)
+        sparkle = sparkle_animation.Sparkle(strip_pixels, 0.05, color.GREEN)
+        animations = TimedAnimationSequence(blink, 5, comet, 3, sparkle, 7)
+        while True:
+            animations.animate()
+    """
+
+    # pylint: disable=too-many-instance-attributes
+    def __init__(
+        self, *members, auto_clear=True, random_order=False, auto_reset=False, name=None
+    ):
+        self._animation_members = []
+        self._animation_timings = []
+        for x, item in enumerate(members):
+            if not x % 2:
+                self._animation_members.append(item)
+            else:
+                self._animation_timings.append(item)
+
+        super().__init__(
+            *self._animation_members,
+            auto_clear=auto_clear,
+            random_order=random_order,
+            auto_reset=auto_reset,
+            advance_on_cycle_complete=False,
+            name=name,
+        )
+        self._advance_interval = self._animation_timings[self._current] * MS_PER_SECOND
+
+    def activate(self, index):
+        super().activate(index)
+        self._advance_interval = self._animation_timings[self._current] * MS_PER_SECOND

examples/led_animation_timedsequence.py

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+# SPDX-FileCopyrightText: 2020 Gamblor21
+#
+# SPDX-License-Identifier: MIT
+"""
+Example for TimedSequence
+"""
+import board
+import neopixel
+from adafruit_led_animation.timedsequence import TimedAnimationSequence
+import adafruit_led_animation.animation.comet as comet_animation
+import adafruit_led_animation.animation.sparkle as sparkle_animation
+import adafruit_led_animation.animation.blink as blink_animation
+from adafruit_led_animation import color
+
+strip_pixels = neopixel.NeoPixel(board.D6, 32, brightness=0.1, auto_write=False)
+blink = blink_animation.Blink(strip_pixels, 0.3, color.RED)
+comet = comet_animation.Comet(strip_pixels, 0.1, color.BLUE)
+sparkle = sparkle_animation.Sparkle(strip_pixels, 0.05, color.GREEN)
+animations = TimedAnimationSequence(blink, 2, comet, 4, sparkle, 5)
+while True:
+    animations.animate()

examples/led_animation_volume.py

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+# SPDX-FileCopyrightText: 2023 Tim Cocks
+#
+# SPDX-License-Identifier: MIT
+
+"""Volume Animation Example"""
+import board
+from audiomp3 import MP3Decoder
+import neopixel
+from adafruit_led_animation.animation import volume
+
+try:
+    from audioio import AudioOut
+except ImportError:
+    try:
+        from audiopwmio import PWMAudioOut as AudioOut
+    except ImportError:
+        pass  # not always supported by every board!
+
+# Fill in your own MP3 file or use the one from the learn guide:
+# https://learn.adafruit.com/circuitpython-essentials/circuitpython-mp3-audio#installing-project-code-3067700
+mp3file = "happy.mp3"
+with open(mp3file, "rb") as mp3:
+    decoder = MP3Decoder(mp3)
+    audio = AudioOut(board.SPEAKER)
+
+    strip_pixels = neopixel.NeoPixel(board.D4, 30, brightness=0.1, auto_write=False)
+    volume_anim = volume.Volume(strip_pixels, 0.3, (0, 255, 0), decoder, 400)
+
+    while True:
+        audio.play(decoder)
+        print("playing", mp3file)
+
+        while audio.playing:
+            volume_anim.animate()