Turn and cry

test copy turn.ino

CRGB img[];

CRGB leds[];

//we want to display at x0,y0 and imaage of size width,height on a LED_WIDTH, LED_HEIGHT panel (turned 90)


//read the image from SD
myFile.read((uint8_t *)img,NUM_LEDS*sizeof(CRGB));

//copy with turn 90
int x0=0;
int y0=0;

for (int x=0;x<width;i++)
{
  for (int y=0;y<height;j++)
  {
    if(x0+x<LED_HEIGHT && y+y0w<LED_WIDTH)
    {
     img[x+y*width]=leds[(x0+x)*LED_WIDTH+(y+y0)];
    }
  }
}