Flip an Opticks RasterElement

gistfile1.cpp

DataAccessor acc = pRaster->getDataAccessor();
DataAccessor outacc = pOutRaster->getDataAccessor(writableDataRequest.release());
/** code to flip horizontally **/
for (int row = 0; row < numrows; ++row) {
  VERIFY(acc.valid() && outacc.valid());
  memcpy(outacc->getRow(), acc->getRow(), rowSizeInBytes);
  // note: pixeldatatype is the C++ type for BSQ..for BIP, you'll need to use a struct..somthing like this for 10 bands 2-byte data
  // struct {uint16_t data[10];}
  // or just use a second loop with appropriate memcpy's
  std::reverse((pixeldatatype*)outacc->getRow(), ((pixeldatatype*)outacc->getRow()) + pixelsPerRow);
  acc->nextRow();
  outacc->nextRow();
}
pOutRaster->update();

/** or, code to flip vertically **/
for (int row = 0; row < numrows; ++row) {
  outacc->toPixel(numrows - row - 1, 0);
  VERIFY(acc.valid() && outacc.valid());
  memcpy(outacc->getRow(), acc->getRow(), rowSizeInBytes);
  acc->nextRow();
}
pOutRaster->update();