def convertWCS(inwcs, drizwcs):
    """ Copy WCSObject WCS into Drizzle compatible array."""
    drizwcs[0] = inwcs.crpix[0]
    drizwcs[1] = inwcs.crval[0]
    drizwcs[2] = inwcs.crpix[1]
    drizwcs[3] = inwcs.crval[1]
    drizwcs[4] = inwcs.cd[0][0]
    drizwcs[5] = inwcs.cd[1][0]
    drizwcs[6] = inwcs.cd[0][1]
    drizwcs[7] = inwcs.cd[1][1]
    return drizwcs
