pitrix/effects.h

class Effect {
  public:
    virtual void loop() {};
};

class Bell : public Effect {
  private:
    
    CRGB color_on = CRGB(0xFFFF00);
    CRGB color_off= CRGB(0x000000);
    boolean invert = false;

  public:
    void loop() {
      for(int y=0; y<16; y++) {
        for(int x=0; x<2; x++) {
          for(int z=0; z<8; z++) {
            leds[XYsafe(x*8+z, y)] = sprite_bell[y*2+x]>>(7-z) & 1 ^ invert ? color_on : color_off;
          }
        }
      }

      EVERY_N_MILLISECONDS(300) {
        invert = !invert;
      }
    }  
};

class Clock : public Effect {
  private:
    CRGB color_h = CRGB(0xFF0000);
    CRGB color_m = CRGB(0x00FF00);
    CRGB color_colon = CRGB(0xFFFF00);

    void drawNumber(uint8_t number, int x, int y, CRGB color) {
      char buffer[7];
      sprintf(buffer, "%02d", number);
      drawText(buffer, x, y, color);
    }

    void drawText(char *text, int x, int y, CRGB color) {
      for (int i = 0; i < strlen(text); i++) {
        drawSprite(font_char(numbers4x7, text[i]), x + i * 4, y, color);
      }
    }

    unsigned char* font_char(unsigned char* font, char c) {
      return &font[(c - 48) * 4];
    }

    void drawSprite(unsigned char* sprite, int xOffset, int yOffset, CRGB color) {
      for ( byte y = 0; y < 7; y++) {
        for ( byte x = 0; x < 4; x++) {
          bool on = (sprite[x] >> y & 1) * 255;
          if (on) {
            leds[ XYsafe(x + xOffset, y + yOffset) ] = color;
          }
        }
      }
    }
  public:
    Clock() {}
    void loop() {
      clear();
      drawNumber(ntpClient.getHours(), 0, 0, color_h);
      drawNumber(ntpClient.getMinutes(), 8, 0, color_m);
      /*if (ntpClient.getSeconds() & 1) {
        leds[XYsafe(13, 2)] = color_colon;
        leds[XYsafe(13, 5)] = color_colon;
        }*/
      drawNumber(ntpClient.getSeconds(), 8, 8, color_colon);
    }
};

class SmallClock : public Effect {
  private:
    CRGB color_h = CRGB(0xFF0000);
    CRGB color_m = CRGB(0x00FF00);
    CRGB color_colon = CRGB(0xFFFF00);

  public:
    SmallClock() {}

    void loop() {
      clear();
      int h = ntpClient.getHours();
      drawDigit(numbers3x5, 3, 5, 0, 11, h/10, color_h);
      drawDigit(numbers3x5, 3, 5, 4, 11, h%10, color_h);
      int m = ntpClient.getMinutes();
      drawDigit(numbers3x5, 3, 5, 9, 11, m/10, color_m);
      drawDigit(numbers3x5, 3, 5, 13, 11, m%10, color_m);
      if (ntpClient.getSeconds() & 1) {
        leds[XYsafe(7, 12)] = color_colon;
        leds[XYsafe(7, 14)] = color_colon;
      }
    }
};

class Sinematrix3 : public Effect {
  private:
    double pangle = 0;
    double angle = 0;
    double sx = 0;
    double sy = 0;
    double tx = 0;
    double ty = 0;
    double cx = 0;
    double cy = 0;
    double rcx = 0;
    double rcy = 0;
    double angle2 = 0;
    double sx2 = 0;
    double sy2 = 0;
    double tx2 = 0;
    double ty2 = 0;
    double basecol = 0;
    double fx = 1.0/(LED_WIDTH/PI);
    double fy = 1.0/(LED_HEIGHT/PI);
    Matrix rotate;

  public:
    Sinematrix3() {}
    void loop() {
      pangle = addmodpi( pangle, 0.0133 + (angle/256) );
      angle = cos(pangle) * PI;
      sx = addmodpi( sx, 0.00673 );
      sy = addmodpi( sy, 0.00437 );
      tx = addmodpi( tx, 0.00239 );
      ty = addmodpi( ty, 0.00293 );
      cx = addmodpi( cx, 0.00197 );
      cy = addmodpi( cy, 0.00227 );
      rcx = (LED_WIDTH/2) + (sin(cx) * LED_WIDTH);
      rcy = (LED_HEIGHT/2) + (sin(cy) * LED_HEIGHT);
      angle2 = addmodpi( angle2, 0.0029 );
      sx2 = addmodpi( sx2, 0.0041);
      sy2 = addmodpi( sy2, 0.0031);
      tx2 = addmodpi( tx2, 0.0011 );
      ty2 = addmodpi( ty2, 0.0023 );
      basecol = addmod( basecol, 1.0, 0.007 );
      
      rotate = {
        .a11 = cos(angle),
        .a12 = -sin(angle),
        .a21 = sin(angle),
        .a22 = cos(angle)
      };
      Matrix zoom = {
        .a11 = sin(sx)/4.0 + 0.15,
        .a12 = 0, //atan(cos(sx2)),
        .a21 = 0, //atan(cos(sy2)),
        .a22 = cos(sy)/4.0 + 0.15
      };
      Vector translate = {
        .x1 = sin(tx) * LED_WIDTH,
        .x2 = sin(ty) * LED_HEIGHT
      };
    
      for( int x = 0; x < LED_WIDTH; x++ ) {
        for( int y = 0; y < LED_HEIGHT; y++ ) {
          Vector c = add(multiply( multiply(rotate, zoom), { .x1 = x-rcx, .x2 = y-rcy } ), translate);
          //Vector c2 = add(multiply( multiply(zoom2, rotate2), { .x1 = x, .x2 = y } ), translate2);
          leds[XYsafe(x,y)] = CHSV((basecol+basefield(c.x1, c.x2))*255, 255, 255); //31+(sines(c2.x1-10, c2.x2-10)*224));
        }
      }
    }
};

class Static : public Effect {
  private:
    CRGB color;
  public:
    Static(CRGB col) {
      color = col;
    }
    void loop() {
      EVERY_N_SECONDS(1) {
        for ( int i = 0; i < LED_COUNT; i++) {
          leds[i]  = color;
        }
        FastLED.show();
      }
    }
};

class Animation : public Effect {
  private:
    AnimationData *animation;
    int frame = 0;
  public:
    Animation(AnimationData *anim) {
      animation = anim;
    }
    void loop() {
      CRGB colors[animation->color_count];
      int led_index = 0;
      for(int i=0; i<animation->color_count; i++) colors[i] = CRGB(animation->colors[i]);
      for(int i=animation->offsets[frame]; i<animation->offsets[frame+1]; i++) {
        if (animation->data[i]==255) { // Run-length encoded data
          for (int j=0; j<animation->data[i+1]; j++) {
            if (frame==0 || animation->data[i+2]>0) {
              set(led_index, colors[animation->data[i+2]]);
            }
            led_index++;
          }
          i+=2;
        } else {
          if (frame==0 || animation->data[i]>0) {
            set(led_index, colors[animation->data[i]]);
          }
          led_index++;
        }
      }
      EVERY_N_MILLISECONDS(250) {
        frame = (frame + 1) % animation->frame_count;
      }
    }
    void set(int i,  CRGB color) {
      setPixel(i % animation->w, i / animation->h, color);
    }
};

struct EffectEntry {
  char* name;
  Effect* effect;
};