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# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
include <imio.h>
include "../lib/apphot.h"
# AP_ITOL -- Convert coordinates from the input coordinate system to the
# logical coordinate system.
procedure ap_itol (ap, xin, yin, xout, yout, npts)
pointer ap # the apphot package descriptor
real xin[ARB] # the input x coordinate
real yin[ARB] # the input y coordinate
real xout[ARB] # the output x coordinate
real yout[ARB] # the output y coordinate
int npts # the number of coordinates to convert
double xt, yt
pointer ct
int i
int apstati()
begin
ct = apstati (ap, CTIN)
if (ct == NULL) {
call amovr (xin, xout, npts)
call amovr (yin, yout, npts)
return
}
do i = 1, npts {
call mw_c2trand (ct, double (xin[i]), double (yin[i]), xt, yt)
xout[i] = xt
yout[i] = yt
}
end
# AP_LTOO -- Convert coordinates from the logical coordinate system to the
# output coordinate system.
procedure ap_ltoo (ap, xin, yin, xout, yout, npts)
pointer ap # the apphot package descriptor
real xin[ARB] # the input x coordinate
real yin[ARB] # the input y coordinate
real xout[ARB] # the output x coordinate
real yout[ARB] # the output y coordinate
int npts # the number of coordinates to convert
double xt, yt
pointer ct
int i
int apstati()
begin
ct = apstati (ap, CTOUT)
if (ct == NULL) {
call amovr (xin, xout, npts)
call amovr (yin, yout, npts)
return
}
do i = 1, npts {
call mw_c2trand (ct, double (xin[i]), double (yin[i]), xt, yt)
xout[i] = xt
yout[i] = yt
}
end
# AP_LTOV -- Convert coordinate from the logical coordinate system to the
# output coordinate system.
procedure ap_ltov (im, xin, yin, xout, yout, npts)
pointer im # the input image descriptor
real xin[ARB] # the input x coordinate
real yin[ARB] # the input y coordinate
real xout[ARB] # the output x coordinate
real yout[ARB] # the output y coordinate
int npts # the number of coordinates to convert
int i, index1, index2
begin
index1 = IM_VMAP(im,1)
index2 = IM_VMAP(im,2)
do i = 1, npts {
xout[i] = xin[i] * IM_VSTEP(im,index1) + IM_VOFF(im,index1)
yout[i] = yin[i] * IM_VSTEP(im,index2) + IM_VOFF(im,index2)
}
end
# AP_VTOL -- Convert coordinate from the tv coordinate system to the
# logical coordinate system.
procedure ap_vtol (im, xin, yin, xout, yout, npts)
pointer im # the input image descriptor
real xin[ARB] # the input x coordinate
real yin[ARB] # the input y coordinate
real xout[ARB] # the output x coordinate
real yout[ARB] # the output y coordinate
int npts # the number of coordinates to convert
int i, index1, index2
begin
index1 = IM_VMAP(im,1)
index2 = IM_VMAP(im,2)
do i = 1, npts {
xout[i] = (xin[i] - IM_VOFF(im,index1)) / IM_VSTEP(im,index1)
yout[i] = (yin[i] - IM_VOFF(im,index2)) / IM_VSTEP(im,index2)
}
end
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