Hero * Hero::constructFromFitsFile(const QString &fname)
{
FitsParser parser;
bool parsedOk = parser.loadFile( FitsFileLocation::fromLocal( fname));
if( ! parsedOk) {
dbg(1) << "Parser failed to load " << fname;
Hero * heroPtr = new Hero;
heroPtr-> addError( "FitsParser failed to load the file");
return heroPtr;
}
// alias hdr
auto & hdr = parser.getHeaderInfo().headerLines;
Hero * heroPtr = new Hero;
Hero & hero = * heroPtr;
AstErrorGuard guard( heroPtr);
AstGCGuard gcGuard;
// set naxes in case AST fails to read this file
hero.m_ast.naxes = parser.getHeaderInfo().naxis;
// set up bunit
{
hero.m_bunit = parser.getHeaderInfo().bunit;
}
// and the nicer version of bunit
{
QString u = hero.m_bunit.simplified();
if( u.toLower() == "kelvin") {
hero.m_bunitNiceHtml = "K";
}
else {
hero.m_bunitNiceHtml = u;
}
}
// Create a FitsChan and feed it the fits header
AstFitsChan *fitschan;
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wformat-zero-length"
fitschan = astFitsChan( NULL, NULL, "" );
#pragma GCC diagnostic pop
std::cout << "astOK = " << astOK << "\n";
// feed the header lines one by one and check for errors
for( const QString & s : hdr) {
std::string stdstr = s.toStdString();
astPutFits( fitschan, stdstr.c_str(), 1);
if( ! astOK) {
astClearStatus;
QString ss = s.trimmed();
std::cout << "Skipping bad card: " << ss << "\n";
hero.addError( "Skipping card: " + ss);
}
}
// reposition to the beginning of the channel (ast thing, it's required, hmmmkey)
astClear( fitschan, "Card" );
std::cout << "astOK = " << astOK << "\n";
std::cout << "Here\n";
auto encoding = AstWrappers::getC( fitschan, "Encoding" );
std::cout << "Encoding = " << encoding << "\n";
// do we have warnings?
AstKeyMap * warnings = static_cast<AstKeyMap *>( astWarnings( fitschan));
if( warnings && astOK ) {
std::cout << "Warnings:\n";
int iwarn = 1;
while( astOK ) {
std::string key = QString("Warning_%1").arg( iwarn).toStdString();
const char * message = nullptr;
if( astMapGet0C( warnings, key.c_str(), & message ) ) {
printf( "\n- %s\n", message );
hero.addError( QString( "Warning: %1").arg( message));
} else {
break;
}
}
}
else {
std::cout << "No warnings\n";
}
// create a frameset for this file
AstFrameSet * wcsinfo = static_cast<AstFrameSet *> ( astRead( fitschan ));
std::cout << "astOK = " << astOK << "\n";
if ( ! astOK ) {
std::cout << "astOK is not ok\n";
hero.addError( "astRead failed");
astClearStatus;
return heroPtr;
}
else if ( wcsinfo == AST__NULL ) {
hero.addError( "No WCS found in the fits file");
std::cout << "No WCS found\n";
return heroPtr;
}
else if ( AstWrappers::getC( wcsinfo, "Class" ) != "FrameSet") {
std::cout << "Some other weird error occured\n";
hero.addError( "AstLib returned non-frame-set");
return heroPtr;
}
// frame was read in OK, save it
hero.m_ast.origWcsInfo = wcsinfo;
astExempt( hero.m_ast.origWcsInfo);
hero.m_ast.currWcsInfo = astClone( hero.m_ast.origWcsInfo);
astExempt( hero.m_ast.currWcsInfo);
astShow( wcsinfo);
// extract the current sky system
// TODO: this assumes axis1 is a skycs
QString skysys = AstWrappers::getC( wcsinfo, "System(1)");
hero.m_currentSkyCs = string2skycs( skysys);
hero.m_originalSkyCs = hero.m_currentSkyCs;
// extract the labels/etc for axes
hero.m_ast.naxes = AstWrappers::getI( wcsinfo, "Naxes" );
hero.parseAxesInfo();
return heroPtr;
}
/* ============== */
int main( int argc, char *argv[] ) {
/*
*+
* Name:
* ast_test
* Purpose:
* Test installation of the AST library.
* Type:
* C program.
* Description:
* This program performs a simple test (without using graphics) of
* the AST library, to check that it is correctly installed. It is
* not an exhaustive test of the system.
* Arguments:
* None.
* Copyright:
* Copyright (C) 1997-2006 Council for the Central Laboratory of the
* Research Councils
* Licence:
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public Licence as
* published by the Free Software Foundation; either version 2 of
* the Licence, or (at your option) any later version.
*
* This program is distributed in the hope that it will be
* useful,but WITHOUT ANY WARRANTY; without even the implied
* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
* PURPOSE. See the GNU General Public Licence for more details.
*
* You should have received a copy of the GNU General Public Licence
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street,Fifth Floor, Boston, MA
* 02110-1301, USA
* Authors:
* RFWS: R.F. Warren-Smith (Starlink)
* History:
* 19-NOV-1997 (RFWS);
* Original version.
*-
*/
/* Local Constants: */
#define NCOORD 10 /* Number of coordinates to transform */
/* Local Variables: */
AstFrameSet *cvt; /* Pointer to conversion FrameSet */
AstSkyFrame *sky1; /* Pointer to first SkyFrame */
AstSkyFrame *sky2; /* Pointer to second SkyFrame */
double xin[ NCOORD ]; /* Input coordinate array */
double xout[ NCOORD ]; /* Output coordinate array */
double yin[ NCOORD ]; /* Input coordinate array */
double yout[ NCOORD ]; /* Output coordinate array */
int i; /* Loop counter for coordinates */
/* Begin an AST context. */
astBegin;
/* Create two SkyFrames. */
sky1 = astSkyFrame( "system = FK4_NO_E, equinox = B1920, epoch = B1958" );
sky2 = astSkyFrame( "system = ecliptic, equinox = J2001" );
/* Create a FrameSet describing the conversion between them. */
cvt = astConvert( sky1, sky2, "" );
/* If successful, set up some input coordinates. */
if ( cvt != AST__NULL ) {
for ( i = 0; i < NCOORD; i++ ) {
xin[ i ] = 0.1 * (double) i;
yin[ i ] = 0.2 * (double) i;
}
/* Display the FrameSet. */
astShow( cvt );
printf( "\n");
/* Activate reporting of coordinate transformations. */
astSet( cvt, "Report = 1" );
/* Perform the forward transformation. */
astTran2( cvt, 10, xin, yin, 1, xout, yout );
printf( "\n");
/* Perform the inverse transformation. */
astTran2( cvt, 10, xout, yout, 0, xin, yin );
}
/* End the AST context. */
astEnd;
/* Return an error status. */
return astOK ? 0 : 1;
/* Undefine local macros. */
#undef NCOORD
}
