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// Copyright (C) 1999-2018
// Smithsonian Astrophysical Observatory, Cambridge, MA, USA
// For conditions of distribution and use, see copyright notice in "copyright"
#include "fitsimage.h"
#include "hpx.h"
void FitsImage::initHPX()
{
if (hpx_)
delete hpx_;
hpx_ = NULL;
// make sure we have rows and cols
FitsHead* head = fits_->head();
FitsTableHDU* hdu = NULL;
if (head) {
hdu = (FitsTableHDU*)(head->hdu());
if (!hdu->width() || !hdu->rows())
return;
}
// coordinate system identifier?
FitsHPX::CoordSys coord = FitsHPX::UNKNOWN;
if (fits_->pHPXSystem() >= 0)
coord = (FitsHPX::CoordSys)fits_->pHPXSystem();
else {
char* str = head->getString("COORDSYS");
if (str) {
if (str[0] == 'G')
coord = FitsHPX::GAL;
else if (str[0] == 'E')
coord = FitsHPX::ECL;
else if (str[0] == 'C')
coord = FitsHPX::EQU;
else if (str[0] == 'Q')
coord = FitsHPX::EQU;
}
}
// Nested or ring order?
FitsHPX::Order order = FitsHPX::RING;
if (fits_->pHPXOrder() >=0)
order = (FitsHPX::Order)fits_->pHPXOrder();
else {
char* str = head->getString("ORDERING");
if (str) {
if (str[0] == 'N')
order = FitsHPX::NESTED;
else if (str[0] == 'R')
order = FitsHPX::RING;
}
}
// Layout
FitsHPX::Layout layout = FitsHPX::EQUATOR;
if (fits_->pHPXLayout() >=0)
layout = (FitsHPX::Layout)fits_->pHPXLayout();
// Col
int col =0;
if (fits_->pHPXColumn() >=0)
col = fits_->pHPXColumn();
if (col<0)
col =0;
// Quad
int quad = 0;
if (fits_->pHPXQuad() >=0)
quad = fits_->pHPXQuad();
if (quad<0 || quad>3)
quad =0;
hpx_ = new FitsHPX(fits_, order, coord, layout, col, quad);
}
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