Updates

esphome/components/light/addressable_light.cpp

@@ -0,0 +1,84 @@
+#include "addressable_light.h"
+#include "esphome/core/log.h"
+
+namespace esphome {
+namespace light {
+
+ESPColor ESPHSVColor::to_rgb() const {
+  // based on FastLED's hsv rainbow to rgb
+  const uint8_t hue = this->hue;
+  const uint8_t sat = this->saturation;
+  const uint8_t val = this->value;
+  // upper 3 hue bits are for branch selection, lower 5 are for values
+  const uint8_t offset8 = (hue & 0x1F) << 3;  // 0..248
+  // third of the offset, 255/3 = 85 (actually only up to 82; 164)
+  const uint8_t third = esp_scale8(offset8, 85);
+  const uint8_t two_thirds = esp_scale8(offset8, 170);
+  ESPColor rgb(255, 255, 255, 0);
+  switch (hue >> 5) {
+    case 0b000:
+      rgb.r = 255 - third;
+      rgb.g = third;
+      rgb.b = 0;
+      break;
+    case 0b001:
+      rgb.r = 171;
+      rgb.g = 85 + third;
+      rgb.b = 0;
+      break;
+    case 0b010:
+      rgb.r = 171 - two_thirds;
+      rgb.g = 170 + third;
+      rgb.b = 0;
+      break;
+    case 0b011:
+      rgb.r = 0;
+      rgb.g = 255 - third;
+      rgb.b = third;
+      break;
+    case 0b100:
+      rgb.r = 0;
+      rgb.g = 171 - two_thirds;
+      rgb.b = 85 + two_thirds;
+      break;
+    case 0b101:
+      rgb.r = third;
+      rgb.g = 0;
+      rgb.b = 255 - third;
+      break;
+    case 0b110:
+      rgb.r = 85 + third;
+      rgb.g = 0;
+      rgb.b = 171 - third;
+      break;
+    case 0b111:
+      rgb.r = 170 + third;
+      rgb.g = 0;
+      rgb.b = 85 - third;
+      break;
+    default:
+      break;
+  }
+  // low saturation -> add uniform color to orig. hue
+  // high saturation -> use hue directly
+  // scales with square of saturation
+  // (r,g,b) = (r,g,b) * sat + (1 - sat)^2
+  rgb *= sat;
+  const uint8_t desat = 255 - sat;
+  rgb += esp_scale8(desat, desat);
+  // (r,g,b) = (r,g,b) * val
+  rgb *= val;
+  return rgb;
+}
+
+void ESPRangeView::set(const ESPColor &color) {
+  for (int32_t i = this->begin_; i < this->end_; i++) {
+    (*this->parent_)[i] = color;
+  }
+}
+ESPColorView ESPRangeView::operator[](int32_t index) const { return (*this->parent_)[index]; }
+
+ESPColorView ESPRangeView::Iterator::operator*() const { return (*this->range_->parent_)[this->i_]; }
+
+}  // namespace light
+}  // namespace esphome