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include <pkg/gtools.h>
include <smw.h>
include <units.h>
include "ecidentify.h"
# EC_FITDATA -- Compute fit coordinates from pixel coordinates.
procedure ec_fitdata (ec)
pointer ec # ID pointer
int i, ecf_oeval()
begin
call mfree (EC_FITDATA(ec), TY_DOUBLE)
call malloc (EC_FITDATA(ec), EC_NCOLS(ec)*EC_NLINES(ec), TY_DOUBLE)
do i = 1, EC_NLINES(ec) {
call ec_gline (ec, i)
if (EC_ECF(ec) == NULL) {
if (DC(EC_SH(ec)) != DCNO && EC_UN(ec) != NULL)
iferr (call shdr_units (EC_SH(ec), UN_UNITS(EC_UN(ec))))
;
call achtrd (Memr[SX(EC_SH(ec))], FITDATA(ec,1), EC_NPTS(ec))
call gt_sets (EC_GT(ec), GTXLABEL, LABEL(EC_SH(ec)))
call gt_sets (EC_GT(ec), GTXUNITS, UNITS(EC_SH(ec)))
} else {
ORDERS(ec,i) = ecf_oeval (EC_ECF(ec), APS(ec,i))
call ecf_vector (EC_ECF(ec), APS(ec,i), PIXDATA(ec,1),
FITDATA(ec,1), EC_NPTS(ec))
if (EC_UN(ec) == NULL) {
call gt_sets (EC_GT(ec), GTXLABEL, LABEL(EC_SH(ec)))
call gt_sets (EC_GT(ec), GTXUNITS, UNITS(EC_SH(ec)))
} else {
call gt_sets (EC_GT(ec), GTXLABEL, UN_LABEL(EC_UN(ec)))
call gt_sets (EC_GT(ec), GTXUNITS, UN_UNITS(EC_UN(ec)))
}
}
}
call ec_gline (ec, EC_LINE(ec))
EC_ORDER(ec) = ORDERS(ec,EC_LINE(ec))
end
# EC_FITFEATURES -- Compute fit coordinates for features.
procedure ec_fitfeatures (ec)
pointer ec # ID pointer
int i, ec_line()
double ec_fitpt()
begin
if (EC_NFEATURES(ec) < 1)
return
do i = 1, EC_NFEATURES(ec) {
LINE(ec,i) = ec_line (ec, APN(ec,i))
ORDER(ec,i) = ORDERS(ec,LINE(ec,i))
FIT(ec,i) = ec_fitpt (ec, APN(ec,i), PIX(ec,i))
}
end
# EC_FITPT -- Compute fit coordinates from pixel coordinates.
double procedure ec_fitpt (ec, order, pix)
pointer ec # ID pointer
int order # Order
double pix # Pixel coordinate
double fit, ecf_eval(), smw_c1trand(), shdr_lw()
begin
if (EC_ECF(ec) == NULL) {
fit = smw_c1trand (EC_PL(ec), pix)
fit = shdr_lw (EC_SH(ec), fit)
} else
fit = ecf_eval (EC_ECF(ec), order, pix)
return (fit)
end
# EC_FITTOPIX -- Transform fit coordinate to pixel coordinate.
define DXMIN .01
double procedure ec_fittopix (ec, fitcoord)
pointer ec # ID pointer
double fitcoord # Fit coordinate to be transformed
double pixcoord # Pixel coordinate returned
int i, n
double dx
double ec_fitpt(), smw_c1trand()
begin
n = EC_NPTS(ec)
if (FITDATA(ec,1) < FITDATA(ec,n)) {
if ((fitcoord<FITDATA(ec,1)) || (fitcoord>FITDATA(ec,n)))
return (INDEFD)
for (i = 1; fitcoord > FITDATA(ec,i); i = i + 1)
;
if (FITDATA(ec,i) == fitcoord)
return (double (i))
pixcoord = smw_c1trand (EC_LP(ec), double(i-.5))
dx = smw_c1trand (EC_LP(ec), double(i+.5)) - pixcoord
while (dx > DXMIN) {
dx = dx / 2
if (ec_fitpt (ec, EC_AP(ec), pixcoord) < fitcoord)
pixcoord = pixcoord + dx
else
pixcoord = pixcoord - dx
}
} else {
if ((fitcoord<FITDATA(ec,n)) || (fitcoord>FITDATA(ec,1)))
return (INDEFD)
for (i = 1; fitcoord < FITDATA(ec,i); i = i + 1)
;
if (FITDATA(ec,i) == fitcoord)
return (double (i))
pixcoord = smw_c1trand (EC_LP(ec), double(i-.5))
dx = smw_c1trand (EC_LP(ec), double(i+.5)) - pixcoord
while (dx > DXMIN) {
dx = dx / 2
if (ec_fitpt (ec, EC_AP(ec), pixcoord) < fitcoord)
pixcoord = pixcoord - dx
else
pixcoord = pixcoord + dx
}
}
return (pixcoord)
end
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