CODE FOR ANIMATION

anim.ino

void PixelOn(int x,int y,CRGB Color)
{
    
    if (x<0 or y<0 or x>=LED_WIDTH or y>=LED_HEIGHT)
        return ;
    if(y%2==0)
        leds[x+y*LED_WIDTH]=Color;
    else
    {        
        leds[(LED_WIDTH<<1) * ((y >>1)  + 1) - 1 - x]=Color;
  
    }
 
}

long r=0;
void loop()
{
//anim 1
float ab=(float)(r/10)*2*PI/720;
 int offx=-LED_WIDTH*(sin(3*ab)+1)/2;
 int offy=-LED_HEIGHT*(sin(10*ab)+1)/2;
  
  //these offset are used to have the pattern move around the panel also just a bit more fun. you can change this 
  
 for(int x1=1;x1<LED_WIDTH-1;x1++)
    for(int y1=0;y1<LED_HEIGHT;y1++)
    {
      int x=x1+offx;
      int y=y1+offy;
     int coloor= 
    (
        sin8(x * 9.0)
     + sin8(y *5.0)
      + sin8((x + y) *10.0)
      + sin8(sqrt(double(x * x + y * y)) * 6.0)
    ) / 4;
     PixelOn(x1,y1,CHSV((coloor+r)%256,255,255));

    }
    
      r=r+5;
      
      
      
     //anim2
     for(int x1=1;x1<LED_WIDTH-1;x1++)
    for(int y1=0;y1<LED_HEIGHT;y1++)
    {
      
     int coloor= int(sin8(sqrt(((x1-(triwave8(r/5) + LED_WIDTH) / 2.0) * (x1-(triwave8(r/5) + LED_WIDTH) / 2.0) + (y1 - LED_HEIGHT / 2.0) * (y1 - LED_HEIGHT / 2.0)) )*5));
     PixelOn(x1,y1,CHSV((coloor+r)%256,255,255));

    }
      r=r+5;
      
      
      
      //anim3
      
      float ab=(float)(r/10)*2*PI/720;
 int offx=-LED_WIDTH*(sin(3*ab)+1)/2;
 int offy=-LED_HEIGHT*(sin(10*ab)+1)/2;
 for(int x1=1;x1<LED_WIDTH-1;x1++)
    for(int y1=0;y1<LED_HEIGHT;y1++)
    {
          int x=x1+offx;
      int y=y1+offy;
     
     int coloor=(sin8((double)(x)*8 )+ sin8((double)(y)*8)) / 2;
     
     PixelOn(x1,y1,CHSV((coloor+r)%256,255,255));

    }
     
      r=r+5;
      
      
  }