mhsw-espurna/code/espurna/garland/animations/anim_assemble.h

#if GARLAND_SUPPORT

#include <list>

#include "../anim.h"
#include "../color.h"
#include "../palette.h"

//------------------------------------------------------------------------------
class AnimAssemble : public Anim {
   public:
    AnimAssemble() : Anim("Assemble") {
        cycleFactor = 2;
    }
    void SetupImpl() override {
        inc = 1 + (rngb() >> 5);
        if (secureRandom(10) > 5) {
            inc = -inc;
        }

        int p = 0;
        for (int i = 0; i < numLeds; i++) {
            leds[i] = 0;
            Color c = palette->getCachedPalColor((byte)p);
            ledstmp[i] = c;

            p = p + inc;
            if (p >= 256) {
                p = p - 256;
            } else if (p < 0) {
                p = p + 256;
            }
        }
        initSeq();
        shuffleSeq();
        pos = 0;
    }

    void Run() override {
        if (pos < numLeds) {
            byte cur_point = seq[pos];
            leds[cur_point] = ledstmp[cur_point];
            ++pos;
        } else {
            int del_pos = pos - numLeds;
            byte cur_point = seq[del_pos];
            leds[cur_point] = 0;
            if (++pos >= numLeds * 2)
                pos = 0;
        }
    }
};

#endif  // GARLAND_SUPPORT