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/* Header files. */
/* ============= */
/* Interface definitions. */
/* ---------------------- */
#include "ast.h" /* AST C interface definition */
/* C header files. */
/* --------------- */
#include <stdio.h>
/* Main function. */
/* ============== */
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 Lesser General Public
* License as published by the Free Software Foundation, either
* version 3 of the License, 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General
* License along with this program. If not, see
* <http://www.gnu.org/licenses/>.
* 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
}
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