color_wipe_mode.hpp

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#ifndef COLOR_WIPE_MODE_HPP
#define COLOR_WIPE_MODE_HPP
 
 
namespace lampda::modes::default_modes {
 
#include <cstdint>
 
struct ColorWipeMode : public modes::BasicMode
{
  static constexpr float randomVariation = 0.3;
  static constexpr uint32_t animationTiming = 500;
 
  struct StateTy
  {
    float progress;
    bool step;
    uint32_t color;
  };
 
  static void on_enter_mode(auto& ctx)
  {
    ctx.state.step = true;
    ctx.state.progress = 0.0;
    ctx.state.color = utils::get_random_complementary_color(ctx.state.color, randomVariation);
  }
 
  static void loop(auto& ctx)
  {
    static constexpr float iteration = ctx.lamp.frameDurationMs / static_cast<float>(animationTiming);
 
    ctx.state.progress += iteration;
    const float prog = std::min<float>(ctx.state.progress, 1.0);
 
    // go up
    if (ctx.state.step)
    {
      const size_t endIndex = prog * ctx.lamp.ledCount;
      ctx.lamp.fill(ctx.state.color, 0, endIndex);
    }
    // go down
    else
    {
      const size_t startIndex = (1.0f - prog) * ctx.lamp.ledCount;
      ctx.lamp.fill(ctx.state.color, startIndex, ctx.lamp.ledCount);
    }
 
    if (ctx.state.progress >= 1.0)
    {
      ctx.state.progress = 0.0;
      ctx.state.step = not ctx.state.step;
      ctx.state.color = utils::get_random_complementary_color(ctx.state.color, randomVariation);
    }
  }
};
 
} // namespace lampda::modes::default_modes
 
#endif