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#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <fitsio.h>
#include "pow.h"
int readimage(char *,void **,float *,float *, long *,double *,double *,
double *,double *);
int printerror( int status);
int readpha(ClientData, Tcl_Interp *, int, char **);
int readpha(ClientData clientData,Tcl_Interp *interp, int argc,
char *argv[])
{
char filename[160] = "gis2img.fits";
char array_name[32];
FILE *rawout;
float datamin, datamax;
void *imagebuff;
char *i, *j;
int k;
float straight_lineX[50],straight_lineY[50];
int status, array_type, datasize, height, width;
int zero = 0, one = 1, fifty = 50;
double d_zero = 0, d_one = 1;
long naxes[2];
double xorigin,xinc,yorigin,yinc;
int xdisp = 300, ydisp = 300;
int **databuff;
char longStr[1024];
strcpy(filename,argv[1]);
if((status = readimage(filename,&imagebuff,&datamin,&datamax,naxes, &xorigin,
&xinc, &yorigin, &yinc))) {
printerror ( status);
return TCL_ERROR;
}
i = strstr(filename, ".");
if(i == NULL) i = filename + strlen(filename);
for (j = i; ((memcmp(j,"/",1)) && !(j == filename)) ; j--) {
/* printf("%x %x\n",filename,j);*/
}
if (!(memcmp(j,"/",1)) ) j++;
for (k=0;k<32;k++) { array_name[k] = (char) NULL;}
strncpy(array_name,j,i-j);
array_type = REAL_DATA;
datasize = pixelSizes[array_type];
width = (int) naxes[0];
height = (int) naxes[1];
sprintf(longStr,PTRFORMAT " %i %i", imagebuff, array_type, width*height);
Tcl_SetResult(interp, longStr, TCL_OK);
return TCL_OK;
}
/*--------------------------------------------------------------------------*/
int readimage(char *filename,void **imagebuff,float *datamin,float *datamax,
long naxes[2],double *xorigin, double *xinc, double *yorigin,
double *yinc)
/************************************************************************/
/* Read a FITS image and determine the minimum and maximum pixel values */
/************************************************************************/
{
fitsfile *fptr; /* pointer to the FITS file */
int status, nfound, anynull;
long group, fpixel, nbuffer, npixels, ii;
float *buffptr;
char comm[80];
float nullval;
status = 0;
Tcl_DumpActiveMemory("TCLDUMP");
if ( fits_open_file(&fptr, filename, READONLY, &status) ) /* open the image */
printerror( status );
/* read the NAXIS1 and NAXIS2 keyword to get image size */
if ( fits_read_keys_lng(fptr, "NAXIS", 1, 2, naxes, &nfound, &status) )
printerror( status );
npixels = naxes[0] * naxes[1]; /* number of pixels in the image */
*imagebuff = ckalloc(sizeof(float)*npixels);
group = 1;
fpixel = 1;
nullval = 0; /* don't check for null values in the image */
*datamin = 1.0E30;
*datamax = -1.0E30;
nbuffer = npixels;
if ( fits_read_img(fptr,TFLOAT, fpixel, nbuffer,(void *) &nullval,
(void *) *imagebuff, &anynull, &status) ) {
printerror( status );
return TCL_ERROR;
}
buffptr = (float *) *imagebuff;
for (ii = 0; ii < nbuffer; ii++) {
if (*buffptr < *datamin)
*datamin = *buffptr;
if (*buffptr > *datamax)
*datamax = *buffptr;
buffptr++;
}
fits_read_key_dbl(fptr,"CRVAL1",xorigin,comm,&status);
fits_read_key_dbl(fptr,"CRVAL2",yorigin,comm,&status);
fits_read_key_dbl(fptr,"WMREBIN",xinc,comm,&status);
*yinc = *xinc;
*xorigin *= *xinc;
*yorigin *= *yinc;
printf("\nMin and max image pixels = %.0f, %.0f\n", *datamin, *datamax);
if ( ffclos(fptr, &status) ) /* close the FITS file */
printerror( status );
return status;
}
/*--------------------------------------------------------------------------*/
int printerror( int status)
{ char tmp_result[1000] = " ";
/*****************************************************/
/* Print out cfitsio error messages and exit program */
/*****************************************************/
char status_str[FLEN_STATUS], errmsg[FLEN_ERRMSG];
if (status) {
Tcl_AppendResult(interp,"\n*** Error occurred during program execution ***\n",(char *) NULL);
ffgerr(status, status_str); /* get the error status description */
sprintf(tmp_result,"\nstatus = %d: %s\n", status, status_str);
Tcl_AppendResult(interp,tmp_result,(char *) NULL);
}
if ( ffgmsg(errmsg) ) /* get first message; null if stack is empty */
{
sprintf(tmp_result,"\nError message stack:\n %s\n", errmsg);
Tcl_AppendResult(interp,tmp_result,(char *) NULL);
while ( ffgmsg(errmsg) ) /* get remaining messages */
Tcl_AppendResult(interp,errmsg,"\n",(char *) NULL);
}
return TCL_ERROR; /* terminate the program, returning error status */
}
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