#include <Arduino.h>
#include <FastLED.h>

#define LED_PIN 7

// Params for LED width and height
const uint8_t kMatrixWidth = 10;
const uint8_t kMatrixHeight = 10;
uint8_t v_offset = 0 ;

uint8_t bufWidth = 56 ;
uint8_t bufHeight = 10 ;
// uint8_t v_offset;

CRGB leds[kMatrixWidth * kMatrixHeight] ;

// Param for different pixel layouts
bool kMatrixSerpentineLayout = true;
bool kMatrixVertical = false;

int8_t buf1[]= {
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,  
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
1,1,0,0,1,1,0,0,1,1,1,1,1,1,1,0,1,1,1,1,0,0,0,0,1,1,1,1,0,0,0,0,0,0,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,0,0,0,0,
1,1,0,0,1,1,0,0,0,1,1,0,0,0,1,0,0,1,1,0,0,0,0,0,0,1,1,0,0,0,0,0,0,1,1,0,1,1,0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,0,0,0,
1,1,0,0,1,1,0,0,0,1,1,0,1,0,0,0,0,1,1,0,0,0,0,0,0,1,1,0,0,0,0,0,1,1,0,0,0,1,1,0,0,0,0,0,0,0,0,0,1,1,0,0,1,1,0,0,
1,1,1,1,1,1,0,0,0,1,1,1,1,0,0,0,0,1,1,0,0,0,0,0,0,1,1,0,0,0,0,0,1,1,0,0,0,1,1,0,0,0,0,0,0,0,0,0,1,1,0,0,1,1,0,0,
1,1,0,0,1,1,0,0,0,1,1,0,1,0,0,0,0,1,1,0,0,0,1,0,0,1,1,0,0,0,1,0,1,1,0,0,0,1,1,0,0,0,0,0,0,0,0,0,1,1,1,1,1,1,0,0,
1,1,0,0,1,1,0,0,0,1,1,0,0,0,1,0,0,1,1,0,0,1,1,0,0,1,1,0,0,1,1,0,0,1,1,0,1,1,0,0,0,0,0,0,0,0,0,0,1,1,0,0,1,1,0,0,
1,1,0,0,1,1,0,0,1,1,1,1,1,1,1,0,1,1,1,1,1,1,1,0,1,1,1,1,1,1,1,0,0,0,1,1,1,0,0,0,0,0,0,0,0,0,0,0,1,1,0,0,1,1,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
} ;

uint16_t XY( uint8_t x, uint8_t y)
{
  uint16_t i;
  
  if( kMatrixSerpentineLayout == false) {
    if (kMatrixVertical == false) {
      i = (y * kMatrixWidth) + x;
    } else {
      i = kMatrixHeight * (kMatrixWidth - (x+1))+y;
    }
  }

  if( kMatrixSerpentineLayout == true) {
    if (kMatrixVertical == false) {
      if( y & 0x01) {
        // Odd rows run backwards
        uint8_t reverseX = (kMatrixWidth - 1) - x;
        i = (y * kMatrixWidth) + reverseX;
      } else {
        // Even rows run forwards
        i = (y * kMatrixWidth) + x;
      }
    } else { // vertical positioning
      if ( x & 0x01) {
        i = kMatrixHeight * (kMatrixWidth - (x+1))+y;
      } else {
        i = kMatrixHeight * (kMatrixWidth - x) - (y+1);
      }
    }
  }
  
  return i;
}

void shift(int8_t buf[], int8_t szx, int8_t szy)
{
  int8_t tmp[szy];
  int i,j,indx; 

/* copy first column to tmp */

  for(j=0;j<szy;j++) {
    indx=j*szx;
    tmp[j]=buf1[indx] ;
  }
/* shift columns */ 
  for(i=0;i<szx-1;i++)
    for(j=0;j<szy;j++) {
      indx=(j * szx) + i;
      buf1[indx]=buf1[indx+1] ;
  }
  /* move first column to last */

  for(j=0;j<szy;j++) {
      indx=(j * szx) + szx-1;
    buf1[indx]=tmp[j] ;
  }  
}

void writeled(int8_t buf[]) {
  int indx, indx1 ;

  for(int i = 0 ; i<kMatrixWidth ; i++) {
    for(int j = 0 ; j<kMatrixHeight; j++)
    {
      indx1=(j * bufWidth) + i;
      indx=XY(i,j) ;
      leds[indx]= ( buf1[indx1] == 1 ) ? CRGB(75, 56, 113) : CRGB::Black ;
    }
  }
}

void setup() {
  // put your setup code here, to run once:
  FastLED.addLeds<WS2811, LED_PIN, GRB>(leds, kMatrixWidth*kMatrixHeight);
  FastLED.clear();
//  FastLED.show() ;
}

void loop() {
  // put your main code here, to run repeatedly:
  for(v_offset=0; v_offset<2 ; v_offset++) {
    for(int i = 0 ; i < bufWidth; i++) {
      writeled(buf1) ;
      FastLED.show();
      delay(50) ;
      shift(buf1,bufWidth,bufHeight);
    }
  }
}