112 lines
2.7 KiB
C
112 lines
2.7 KiB
C
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#pragma once
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#include "effects/Common.h"
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#include "helpers/BellCurve.h"
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#pragma pack(push, 1)
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struct EffectReverseSwipeConfig
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{
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float swipeSpeed; // in degrees per second
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float bellCurveWidthInLeds;
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float startPosition;
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};
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#pragma pack(pop)
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template <typename TLedStrip>
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class EffectReverseSwipe
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{
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public:
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static constexpr auto NUM_LEDS = numLeds<TLedStrip>();
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static constexpr int DELAY_MS = 10;
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using ConfigType = EffectReverseSwipeConfig;
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EffectReverseSwipe(const EffectReverseSwipeConfig &cfg, TLedStrip &ledStrip)
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: ledStrip_(ledStrip),
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currentPosition_(float(NUM_LEDS) / 2 + cfg.bellCurveWidthInLeds),
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bellCurveWidth_(cfg.bellCurveWidthInLeds),
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invBellCurveWidth_(1.0f / cfg.bellCurveWidthInLeds),
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speed_(cfg.swipeSpeed / 360 / 1000 * NUM_LEDS * DELAY_MS),
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startPosition_(cfg.startPosition / 360.0f * NUM_LEDS),
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finished_(false)
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{
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for (int i = 0; i < NUM_LEDS; ++i)
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state_[i] = getLedRGBW(ledStrip_, i);
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}
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bool finished() const { return finished_; }
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int operator()()
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{
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if (finished_)
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return 60000;
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const auto width = std::min(int(currentPosition_ + 1), int(NUM_LEDS / 2) + 1);
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{
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float brightness = stepFunction(currentPosition_, bellCurveWidth_, invBellCurveWidth_);
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ColorRGBW &prevC = state_[ledStrip_.normalizeIdx(startPosition_)];
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setLedRGBW(ledStrip_, startPosition_, prevC * brightness);
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}
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for (int i = 1; i < width; ++i)
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{
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const float x = currentPosition_ - float(i);
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if (x > 0.0f)
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{
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const int led1 = startPosition_ + i;
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const int led2 = startPosition_ - i;
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float brightness = stepFunction(x, bellCurveWidth_, invBellCurveWidth_);
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ColorRGBW &prevC1 = state_[ledStrip_.normalizeIdx(led1)];
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ColorRGBW &prevC2 = state_[ledStrip_.normalizeIdx(led2)];
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setLedRGBW(ledStrip_, led1, prevC1 * brightness);
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setLedRGBW(ledStrip_, led2, prevC2 * brightness);
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}
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}
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currentPosition_ -= speed_;
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if (currentPosition_ < 0)
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{
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finished_ = true;
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clear(ledStrip_);
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}
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return DELAY_MS;
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}
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private:
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TLedStrip &ledStrip_;
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float currentPosition_;
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float bellCurveWidth_;
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float invBellCurveWidth_;
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float speed_;
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int startPosition_;
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bool finished_;
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ColorRGBW state_[NUM_LEDS];
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};
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// Traits
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template <>
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struct EffectIdToConfig<EffectId::REVERSE_SWIPE>
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{
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using type = EffectReverseSwipeConfig;
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};
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template <>
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struct EffectConfigToId<EffectReverseSwipeConfig>
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{
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static constexpr auto id = EffectId::REVERSE_SWIPE;
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};
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template <typename TLedStrip>
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struct EffectIdToClass<EffectId::REVERSE_SWIPE, TLedStrip>
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{
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using type = EffectReverseSwipe<TLedStrip>;
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};
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