i know if there anyway horizontally flip image without use of 2d array. similar this:
(int x = 0; x < width/2; x++) { (int y = 0; y < height; y++) { int temp = pixeldata[x][y]; pixeldata[x][y]=pixeldata[width-x][y] pixeldata[width-x][y]=temp; } }
you can use single pointer image.
you need know distance (amount increment pointer) between end of 1 raster line (scanline) next. after increment past end of raster line, add distance pointer, end @ left column on next raster line.
with modern systems, have smart gpus, may have better efficiency copying image 2d-array, transforming it, putting back. smarter gpus may have mirroring function along bit-blitting.
