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include <math/curfit.h>
include <pkg/gtools.h>
include <smw.h>
include <units.h>
include "identify.h"
# ID_FITDATA -- Compute fit coordinates from pixel coordinates.
procedure id_fitdata (id)
pointer id # ID pointer
int i
begin
if (ID_SH(id) == NULL || ID_PIXDATA(id) == NULL)
return
call mfree (ID_FITDATA(id), TY_DOUBLE)
call malloc (ID_FITDATA(id), ID_NPTS(id), TY_DOUBLE)
if (ID_CV(id) == NULL) {
if (DC(ID_SH(id)) != DCNO && ID_UN(id) != NULL)
iferr (call shdr_units (ID_SH(id), UN_UNITS(ID_UN(id))))
;
call achtrd (Memr[SX(ID_SH(id))], FITDATA(id,1), ID_NPTS(id))
call gt_sets (ID_GT(id), GTXLABEL, LABEL(ID_SH(id)))
call gt_sets (ID_GT(id), GTXUNITS, UNITS(ID_SH(id)))
} else {
call dcvvector (ID_CV(id), PIXDATA(id,1), FITDATA(id,1),
ID_NPTS(id))
if (FITDATA(id,2) > FITDATA(id,1)) {
do i = 3, ID_NPTS(id)
if (FITDATA(id,i) < FITDATA(id,i-1))
call error (1, "Coordinate solution is not monotonic")
} else {
do i = 3, ID_NPTS(id)
if (FITDATA(id,i) > FITDATA(id,i-1))
call error (1, "Coordinate solution is not monotonic")
}
if (ID_UN(id) == NULL) {
call gt_sets (ID_GT(id), GTXLABEL, LABEL(ID_SH(id)))
call gt_sets (ID_GT(id), GTXUNITS, UNITS(ID_SH(id)))
} else {
call gt_sets (ID_GT(id), GTXLABEL, UN_LABEL(ID_UN(id)))
call gt_sets (ID_GT(id), GTXUNITS, UN_UNITS(ID_UN(id)))
}
}
if (ID_SHIFT(id) != 0.)
call aaddkd (FITDATA(id,1), ID_SHIFT(id), FITDATA(id,1),ID_NPTS(id))
end
# ID_FITFEATURES -- Compute fit coordinates for features.
procedure id_fitfeatures (id)
pointer id # ID pointer
int i
double id_fitpt()
begin
if (ID_NFEATURES(id) < 1)
return
if (ID_CV(id) == NULL)
do i = 1, ID_NFEATURES(id)
FIT(id,i) = id_fitpt (id, PIX(id,i))
else {
call dcvvector (ID_CV(id), PIX(id,1), FIT(id,1), ID_NFEATURES(id))
if (ID_SHIFT(id) != 0.)
call aaddkd (FIT(id,1), ID_SHIFT(id), FIT(id,1), ID_NFEATURES(id))
}
end
# ID_FITPT -- Compute fit coordinates from pixel coordinates.
double procedure id_fitpt (id, pix)
pointer id # ID pointer
double pix # Pixel coordinate
double fit
double smw_c1trand(), shdr_lw(), dcveval()
begin
if (ID_CV(id) == NULL) {
fit = smw_c1trand (ID_PL(id), pix)
fit = shdr_lw (ID_SH(id), fit)
} else
fit = dcveval (ID_CV(id), pix)
fit = fit + ID_SHIFT(id)
return (fit)
end
# FIT_TO_PIX -- Transform fit coordinate to pixel coordinate.
define DXMIN .01
double procedure fit_to_pix (id, fitcoord)
pointer id # ID pointer
double fitcoord # Fit coordinate to be transformed
double pixcoord # Pixel coordinate returned
int i, np1
double dx
int dcvstati()
double shdr_wl(), smw_c1trand(), id_fitpt()
begin
if (ID_CV(id) == NULL) {
pixcoord = fitcoord - ID_SHIFT(id)
pixcoord = shdr_wl (ID_SH(id), pixcoord)
pixcoord = smw_c1trand (ID_LP(id), pixcoord)
return (pixcoord)
}
np1 = NP1(ID_SH(id)) - 1
if (dcvstati (ID_CV(id), CVORDER) == 2) {
i = dcvstati (ID_CV(id), CVTYPE)
if (i == LEGENDRE || i == CHEBYSHEV) {
dx = FITDATA(id,1)
pixcoord = (fitcoord - dx) / (FITDATA(id,2) - dx) + 1 + np1
pixcoord = smw_c1trand (ID_LP(id), pixcoord)
return (pixcoord)
}
}
if (FITDATA(id,1) < FITDATA(id,ID_NPTS(id))) {
if ((fitcoord<FITDATA(id,1)) || (fitcoord>FITDATA(id,ID_NPTS(id))))
return (INDEFD)
for (i = 1; fitcoord > FITDATA(id,i); i = i + 1)
;
if (FITDATA(id,i) == fitcoord)
return (PIXDATA(id,i))
pixcoord = smw_c1trand (ID_LP(id), double(i+np1-.5))
dx = smw_c1trand (ID_LP(id), double(i+np1+.5)) - pixcoord
while (dx > DXMIN) {
dx = dx / 2
if (id_fitpt (id, pixcoord) < fitcoord)
pixcoord = pixcoord + dx
else
pixcoord = pixcoord - dx
}
} else {
if ((fitcoord<FITDATA(id,ID_NPTS(id))) || (fitcoord>FITDATA(id,1)))
return (INDEFD)
for (i = 1; fitcoord < FITDATA(id,i); i = i + 1)
;
if (FITDATA(id,i) == fitcoord)
return (PIXDATA(id,i))
pixcoord = smw_c1trand (ID_LP(id), double(i+np1-.5))
dx = smw_c1trand (ID_LP(id), double(i+np1+.5)) - pixcoord
while (dx > DXMIN) {
dx = dx / 2
if (id_fitpt (id, pixcoord) < fitcoord)
pixcoord = pixcoord - dx
else
pixcoord = pixcoord + dx
}
}
return (pixcoord)
end
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