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Light transition fixes (#2320)

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Oxan van Leeuwen 2021-09-19 18:31:20 +02:00 committed by Jesse Hills
parent c78fb90e2f
commit 4c61cf153c
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3 changed files with 16 additions and 6 deletions
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11
esphome/components/light/addressable_light.cpp
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@ -62,10 +62,13 @@ void AddressableLightTransformer::start() {
}
optional<LightColorValues> AddressableLightTransformer::apply() {
// Don't try to transition over running effects, instead immediately use the target values. write_state() and the
// effects pick up the change from current_values.
float smoothed_progress = LightTransitionTransformer::smoothed_progress(this->get_progress_());
// When running an output-buffer modifying effect, don't try to transition individual LEDs, but instead just fade the
// LightColorValues. write_state() then picks up the change in brightness, and the color change is picked up by the
// effects which respect it.
if (this->light_.is_effect_active())
return this->target_values_;
return LightColorValues::lerp(this->get_start_values(), this->get_target_values(), smoothed_progress);
// Use a specialized transition for addressable lights: instead of using a unified transition for
// all LEDs, we use the current state of each LED as the start.
@ -75,8 +78,6 @@ optional<LightColorValues> AddressableLightTransformer::apply() {
// Instead, we "fake" the look of the LERP by using an exponential average over time and using
// dynamically-calculated alpha values to match the look.
float smoothed_progress = LightTransitionTransformer::smoothed_progress(this->get_progress_());
float denom = (1.0f - smoothed_progress);
float alpha = denom == 0.0f ? 0.0f : (smoothed_progress - this->last_transition_progress_) / denom;

3
esphome/components/light/light_state.cpp
View file

@ -121,6 +121,9 @@ void LightState::loop() {
}
if (this->transformer_->is_finished()) {
// if the transition has written directly to the output, current_values is outdated, so update it
this->current_values = this->transformer_->get_target_values();
this->transformer_->stop();
this->transformer_ = nullptr;
this->target_state_reached_callback_.call();

8
esphome/components/light/transformers.h
View file

@ -12,12 +12,18 @@ namespace light {
class LightTransitionTransformer : public LightTransformer {
public:
void start() override {
// When turning light on from off state, use colors from target state.
// When turning light on from off state, use target state and only increase brightness from zero.
if (!this->start_values_.is_on() && this->target_values_.is_on()) {
this->start_values_ = LightColorValues(this->target_values_);
this->start_values_.set_brightness(0.0f);
}
// When turning light off from on state, use source state and only decrease brightness to zero.
if (this->start_values_.is_on() && !this->target_values_.is_on()) {
this->target_values_ = LightColorValues(this->start_values_);
this->target_values_.set_brightness(0.0f);
}
// When changing color mode, go through off state, as color modes are orthogonal and there can't be two active.
if (this->start_values_.get_color_mode() != this->target_values_.get_color_mode()) {
this->changing_color_mode_ = true;