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include <ctype.h>
include <mach.h>
include <math.h>
include <math/gsurfit.h>
define GEO_LINEAR 1 # Linear transformation only
define GEO_DISTORTION 2 # Distortion correction only
define GEO_GEOMETRIC 3 # Full transformation
$for (rd)
# GEO_LINIT -- Initialize the linear part of the transformation.
$if (datatype == r)
procedure geo_linitr (sx1, sy1, sx2, sy2)
$else
procedure geo_linitd (sx1, sy1, sx2, sy2)
$endif
pointer sx1, sy1 #I/O pointers to the linear x and y surfaces
pointer sx2, sy2 #I/O pointer to the distortion x and y surfaces
PIXEL xmag, ymag, xrot, yrot, xref, yref, xout, yout, xshift, yshift
$if (datatype == r)
real clgetr(), gseval()
$else
double clgetd(), dgseval()
$endif
begin
# Initialize the surfaces.
$if (datatype == r)
call gsinit (sx1, GS_POLYNOMIAL, 2, 2, GS_XNONE, -MAX_REAL, MAX_REAL,
-MAX_REAL, MAX_REAL)
call gsinit (sy1, GS_POLYNOMIAL, 2, 2, GS_XNONE, -MAX_REAL, MAX_REAL,
-MAX_REAL, MAX_REAL)
$else
call dgsinit (sx1, GS_POLYNOMIAL, 2, 2, GS_XNONE, double (-MAX_REAL),
double (MAX_REAL), double (-MAX_REAL), double (MAX_REAL))
call dgsinit (sy1, GS_POLYNOMIAL, 2, 2, GS_XNONE, double (-MAX_REAL),
double (MAX_REAL), double (-MAX_REAL), double (MAX_REAL))
$endif
sx2 = NULL
sy2 = NULL
# Get the magnification parameters.
xmag = clget$t ("xmag")
if (IS_$INDEF$T(xmag))
xmag = PIXEL(1.0)
ymag = clget$t ("ymag")
if (IS_$INDEF$T(ymag))
ymag = PIXEL(1.0)
# Get the rotation parameters.
xrot = clget$t ("xrot")
if (IS_$INDEF$T(xrot))
xrot = PIXEL(0.0)
xrot = -DEGTORAD(xrot)
yrot = clget$t ("yrot")
if (IS_$INDEF$T(yrot))
yrot = PIXEL(0.0)
yrot = -DEGTORAD(yrot)
# Set the magnification and rotation coefficients.
call geo_rotmag$t (sx1, sy1, xmag, ymag, xrot, yrot)
# Compute the origin of the reference coordinates.
xref = clget$t ("xref")
if (IS_$INDEF$T(xref))
xref = PIXEL(0.0)
yref = clget$t ("yref")
if (IS_$INDEF$T(yref))
yref = PIXEL(0.0)
# Compute the corresponding input coordinates.
xout = clget$t ("xout")
if (IS_$INDEF$T(xout))
$if (datatype == r)
xout = gseval (sx1, xref, yref)
$else
xout = dgseval (sx1, xref, yref)
$endif
yout = clget$t ("yout")
if (IS_$INDEF$T(yout))
$if (datatype == r)
yout = gseval (sy1, xref, yref)
$else
yout = dgseval (sy1, xref, yref)
$endif
# Set the shifts.
xshift = clget$t ("xshift")
yshift = clget$t ("yshift")
$if (datatype == r)
if (IS_$INDEF$T(xshift))
xshift = xout - gseval (sx1, xref, yref)
if (IS_$INDEF$T(yshift))
yshift = yout - gseval (sy1, xref, yref)
$else
if (IS_$INDEF$T(xshift))
xshift = xout - $tgseval (sx1, xref, yref)
if (IS_$INDEF$T(yshift))
yshift = yout - $tgseval (sy1, xref, yref)
$endif
call geo_xyshift$t (sx1, sy1, xshift, yshift)
end
# GEO_SFREE -- Free the x and y surface fitting descriptors.
$if (datatype == r)
procedure geo_sfreer (sx1, sy1, sx2, sy2)
$else
procedure geo_sfreed (sx1, sy1, sx2, sy2)
$endif
pointer sx1, sy1 #I/O pointers to the linear x and y surfaces
pointer sx2, sy2 #I/O pointer to the distortion x and y surfaces
begin
$if (datatype == r)
call gsfree (sx1)
call gsfree (sy1)
if (sx2 != NULL)
call gsfree (sx2)
if (sy2 != NULL)
call gsfree (sy2)
$else
call dgsfree (sx1)
call dgsfree (sy1)
if (sx2 != NULL)
call dgsfree (sx2)
if (sy2 != NULL)
call dgsfree (sy2)
$endif
end
# GEO_SINIT -- Read the surface fits from the database file and make
# any requested changes.
procedure geo_sinit$t (dt, record, geometry, sx1, sy1, sx2, sy2)
pointer dt #I pointer to database file produced by geomap
char record[ARB] #I the name of the database record
int geometry #I the type of geometry to be computed
pointer sx1, sy1 #O pointers to the linear x and y surfaces
pointer sx2, sy2 #O pointers to the x and y distortion surfaces
int i, rec, ncoeff, junk
PIXEL xmag, ymag, xrot, yrot, xref, yref, xout, yout, xshift, yshift
pointer newsx1, newsy1, xcoeff, ycoeff
int dtlocate(), dtscan(), dtgeti()
PIXEL clget$t()
$if (datatype == r)
errchk gsrestore
$else
errchk dgsrestore
$endif
begin
# Locate record.
rec = dtlocate (dt, record)
# Get linear part of fit.
ncoeff = dtgeti (dt, rec, "surface1")
call malloc (xcoeff, ncoeff, TY_PIXEL)
call malloc (ycoeff, ncoeff, TY_PIXEL)
do i = 1, ncoeff {
junk = dtscan (dt)
call garg$t (Mem$t[xcoeff+i-1])
call garg$t (Mem$t[ycoeff+i-1])
}
# Restore linear part of fit.
$if (datatype == r)
call gsrestore (sx1, Mem$t[xcoeff])
call gsrestore (sy1, Mem$t[ycoeff])
$else
call dgsrestore (sx1, Mem$t[xcoeff])
call dgsrestore (sy1, Mem$t[ycoeff])
$endif
# Get geometric transformation.
xmag = clget$t ("xmag")
ymag = clget$t ("ymag")
xrot = clget$t ("xrotation")
yrot = clget$t ("yrotation")
xout = clget$t ("xout")
yout = clget$t ("yout")
xref = clget$t ("xref")
yref = clget$t ("yref")
xshift = clget$t ("xshift")
yshift = clget$t ("yshift")
# Get set to adjust linear part of the fit.
$if (datatype == r)
call gscopy (sx1, newsx1)
call gscopy (sy1, newsy1)
$else
call dgscopy (sx1, newsx1)
call dgscopy (sy1, newsy1)
$endif
if (geometry == GEO_DISTORTION)
call geo_rotmag$t (newsx1, newsy1, PIXEL(1.0), PIXEL(1.0),
PIXEL(0.0), PIXEL(0.0))
else if (! IS_$INDEF$T(xmag) || ! IS_$INDEF$T(ymag) ||
! IS_$INDEF$T(xrot) || ! IS_$INDEF$T(yrot))
call geo_drotmag$t (dt, rec, newsx1, newsy1, xmag, ymag,
xrot, yrot)
call geo_dxyshift$t (dt, rec, newsx1, newsy1, xout, yout, xref, yref,
xshift, yshift)
$if (datatype == r)
call gssave (newsx1, Mem$t[xcoeff])
call gssave (newsy1, Mem$t[ycoeff])
$else
call dgssave (newsx1, Mem$t[xcoeff])
call dgssave (newsy1, Mem$t[ycoeff])
$endif
# Get distortion part of fit.
ncoeff = dtgeti (dt, rec, "surface2")
if (ncoeff > 0 && (geometry == GEO_GEOMETRIC ||
geometry == GEO_DISTORTION)) {
call realloc (xcoeff, ncoeff, TY_PIXEL)
call realloc (ycoeff, ncoeff, TY_PIXEL)
do i = 1, ncoeff {
junk = dtscan (dt)
call garg$t (Mem$t[xcoeff+i-1])
call garg$t (Mem$t[ycoeff+i-1])
}
# Restore distortion part of fit.
$if (datatype == r)
iferr {
call gsrestore (sx2, Mem$t[xcoeff])
} then {
call mfree (sx2, TY_STRUCT)
sx2 = NULL
}
iferr {
call gsrestore (sy2, Mem$t[ycoeff])
} then {
call mfree (sy2, TY_STRUCT)
sy2 = NULL
}
$else
iferr {
call dgsrestore (sx2, Mem$t[xcoeff])
} then {
call mfree (sx2, TY_STRUCT)
sx2 = NULL
}
iferr {
call dgsrestore (sy2, Mem$t[ycoeff])
} then {
call mfree (sy2, TY_STRUCT)
sy2 = NULL
}
$endif
} else {
sx2 = NULL
sy2 = NULL
}
# Redefine the linear surfaces.
$if (datatype == r)
call gsfree (sx1)
call gscopy (newsx1, sx1)
call gsfree (newsx1)
call gsfree (sy1)
call gscopy (newsy1, sy1)
call gsfree (newsy1)
$else
call dgsfree (sx1)
call dgscopy (newsx1, sx1)
call dgsfree (newsx1)
call dgsfree (sy1)
call dgscopy (newsy1, sy1)
call dgsfree (newsy1)
$endif
# Cleanup.
call mfree (xcoeff, TY_PIXEL)
call mfree (ycoeff, TY_PIXEL)
end
# GEO_DO_TRANSFORM -- The linear transformation is performed in this procedure.
# First the coordinates are scaled, then rotated and translated. The
# transformed coordinates are returned.
procedure geo_do_transform$t (x, y, xt, yt, sx1, sy1, sx2, sy2)
PIXEL x, y # initial positions
PIXEL xt, yt # transformed positions
pointer sx1, sy1 # pointer to linear surfaces
pointer sx2, sy2 # pointer to distortion surfaces
$if (datatype == r)
real gseval()
$else
double dgseval()
$endif
begin
$if (datatype == r)
xt = gseval (sx1, x, y)
if (sx2 != NULL)
xt = xt + gseval (sx2, x, y)
yt = gseval (sy1, x, y)
if (sy2 != NULL)
yt = yt + gseval (sy2, x, y)
$else
xt = dgseval (sx1, x, y)
if (sx2 != NULL)
xt = xt + dgseval (sx2, x, y)
yt = dgseval (sy1, x, y)
if (sy2 != NULL)
yt = yt + dgseval (sy2, x, y)
$endif
end
$endfor
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