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/*
* Copyright (c) 1999-2003 Smithsonian Astrophysical Observatory
*/
#include <stdio.h>
#include <stdlib.h>
#include "word.h"
#include "tl.h"
#ifndef UNUSED
#ifdef __GNUC__
# define UNUSED(x) UNUSED_ ## x __attribute__((__unused__))
#else
# define UNUSED(x) UNUSED_ ## x
#endif
#endif
/*
* getfitsfloatcenter: funtools and cfitsio have a 0.5 pixel descrepancy
* when converting floating point physical coords to image coords.
* setting this environment variable makes funtools work like cfitsio
*/
static double fitscenval=0.5;
static int ceninited=0;
#ifdef ANSI_FUNC
static double getfitsfloatcenter(void)
#else
static double getfitsfloatcenter()
#endif
{
char *s=NULL;
if( !ceninited ){
if( (s=getenv("FILTER_CFITSIO")) && istrue(s) ){
fitscenval = 1.0;
}
ceninited = 1;
}
return fitscenval;
}
#ifdef ANSI_FUNC
double
tlp2i (double dp, double tlmin, double binsiz, int type)
#else
double tlp2i (dp, tlmin, binsiz, type)
double dp;
double tlmin;
double binsiz;
int type;
#endif
{
double dval = getfitsfloatcenter();
if( (binsiz == 1.0) || (binsiz <= 0.0) ){
switch(type){
case 'B':
case 'I':
case 'U':
case 'J':
case 'K':
case 'V':
default:
return ((dp - tlmin) + 1.0);
case 'E':
case 'D':
return ((dp - tlmin) + dval);
}
}
else{
switch(type){
case 'B':
case 'I':
case 'U':
case 'J':
case 'K':
case 'V':
default:
return ((dp - tlmin)/binsiz + 1.0);
case 'E':
case 'D':
return ((dp - tlmin)/binsiz + dval);
}
}
}
#ifdef ANSI_FUNC
int
itlp2i (double dp, double tlmin, double binsiz, int UNUSED(type))
#else
int itlp2i (dp, tlmin, binsiz, type)
double dp;
double tlmin;
double binsiz;
int type;
#endif
{
if( (binsiz == 1.0) || (binsiz <= 0.0) ){
return (int)((dp - tlmin) + 1.0);
}
else{
return (int)((dp - tlmin)/binsiz + 1.0);
}
}
#ifdef ANSI_FUNC
double
tli2p (double di, double tlmin, double binsiz, int type)
#else
double tli2p (di, tlmin, binsiz, type)
double di;
double tlmin;
double binsiz;
int type;
#endif
{
double dval = getfitsfloatcenter();
if( (binsiz == 1.0) || (binsiz <= 0.0) ){
switch(type){
case 'B':
case 'I':
case 'U':
case 'J':
case 'K':
case 'V':
default:
return ((di - 1.0) + tlmin);
case 'E':
case 'D':
return ((di - dval) + tlmin);
}
}
else{
switch(type){
case 'B':
case 'I':
case 'U':
case 'J':
case 'K':
case 'V':
default:
return ((di - 1.0)*binsiz + tlmin);
case 'E':
case 'D':
return ((di - dval)*binsiz + tlmin);
}
}
}
#ifdef ANSI_FUNC
double
tldim (double tlmin, double tlmax, double binsiz, int type)
#else
double tldim (tlmin, tlmax, binsiz, type)
double tlmin;
double tlmax;
double binsiz;
int type;
#endif
{
if( (binsiz == 1.0) || (binsiz <= 0.0) ){
switch(type){
case 'B':
case 'I':
case 'U':
case 'J':
case 'K':
case 'V':
default:
return ((tlmax-tlmin) + 1.0);
case 'E':
case 'D':
return (tlmax-tlmin);
}
}
else{
switch(type){
case 'B':
case 'I':
case 'U':
case 'J':
case 'K':
case 'V':
default:
return ((tlmax-tlmin)/binsiz + 1.0);
case 'E':
case 'D':
return ((tlmax-tlmin)/binsiz);
}
}
}
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