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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
# GEO_LINIT -- Initialize the linear part of the transformation.
procedure geo_linitr (sx1, sy1, sx2, sy2)
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
real xmag, ymag, xrot, yrot, xref, yref, xout, yout, xshift, yshift
real clgetr(), gseval()
begin
# Initialize the surfaces.
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)
sx2 = NULL
sy2 = NULL
# Get the magnification parameters.
xmag = clgetr ("xmag")
if (IS_INDEFR(xmag))
xmag = real(1.0)
ymag = clgetr ("ymag")
if (IS_INDEFR(ymag))
ymag = real(1.0)
# Get the rotation parameters.
xrot = clgetr ("xrot")
if (IS_INDEFR(xrot))
xrot = real(0.0)
xrot = -DEGTORAD(xrot)
yrot = clgetr ("yrot")
if (IS_INDEFR(yrot))
yrot = real(0.0)
yrot = -DEGTORAD(yrot)
# Set the magnification and rotation coefficients.
call geo_rotmagr (sx1, sy1, xmag, ymag, xrot, yrot)
# Compute the origin of the reference coordinates.
xref = clgetr ("xref")
if (IS_INDEFR(xref))
xref = real(0.0)
yref = clgetr ("yref")
if (IS_INDEFR(yref))
yref = real(0.0)
# Compute the corresponding input coordinates.
xout = clgetr ("xout")
if (IS_INDEFR(xout))
xout = gseval (sx1, xref, yref)
yout = clgetr ("yout")
if (IS_INDEFR(yout))
yout = gseval (sy1, xref, yref)
# Set the shifts.
xshift = clgetr ("xshift")
yshift = clgetr ("yshift")
if (IS_INDEFR(xshift))
xshift = xout - gseval (sx1, xref, yref)
if (IS_INDEFR(yshift))
yshift = yout - gseval (sy1, xref, yref)
call geo_xyshiftr (sx1, sy1, xshift, yshift)
end
# GEO_SFREE -- Free the x and y surface fitting descriptors.
procedure geo_sfreer (sx1, sy1, sx2, sy2)
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
call gsfree (sx1)
call gsfree (sy1)
if (sx2 != NULL)
call gsfree (sx2)
if (sy2 != NULL)
call gsfree (sy2)
end
# GEO_SINIT -- Read the surface fits from the database file and make
# any requested changes.
procedure geo_sinitr (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
real xmag, ymag, xrot, yrot, xref, yref, xout, yout, xshift, yshift
pointer newsx1, newsy1, xcoeff, ycoeff
int dtlocate(), dtscan(), dtgeti()
real clgetr()
errchk gsrestore
begin
# Locate record.
rec = dtlocate (dt, record)
# Get linear part of fit.
ncoeff = dtgeti (dt, rec, "surface1")
call malloc (xcoeff, ncoeff, TY_REAL)
call malloc (ycoeff, ncoeff, TY_REAL)
do i = 1, ncoeff {
junk = dtscan (dt)
call gargr (Memr[xcoeff+i-1])
call gargr (Memr[ycoeff+i-1])
}
# Restore linear part of fit.
call gsrestore (sx1, Memr[xcoeff])
call gsrestore (sy1, Memr[ycoeff])
# Get geometric transformation.
xmag = clgetr ("xmag")
ymag = clgetr ("ymag")
xrot = clgetr ("xrotation")
yrot = clgetr ("yrotation")
xout = clgetr ("xout")
yout = clgetr ("yout")
xref = clgetr ("xref")
yref = clgetr ("yref")
xshift = clgetr ("xshift")
yshift = clgetr ("yshift")
# Get set to adjust linear part of the fit.
call gscopy (sx1, newsx1)
call gscopy (sy1, newsy1)
if (geometry == GEO_DISTORTION)
call geo_rotmagr (newsx1, newsy1, real(1.0), real(1.0),
real(0.0), real(0.0))
else if (! IS_INDEFR(xmag) || ! IS_INDEFR(ymag) ||
! IS_INDEFR(xrot) || ! IS_INDEFR(yrot))
call geo_drotmagr (dt, rec, newsx1, newsy1, xmag, ymag,
xrot, yrot)
call geo_dxyshiftr (dt, rec, newsx1, newsy1, xout, yout, xref, yref,
xshift, yshift)
call gssave (newsx1, Memr[xcoeff])
call gssave (newsy1, Memr[ycoeff])
# Get distortion part of fit.
ncoeff = dtgeti (dt, rec, "surface2")
if (ncoeff > 0 && (geometry == GEO_GEOMETRIC ||
geometry == GEO_DISTORTION)) {
call realloc (xcoeff, ncoeff, TY_REAL)
call realloc (ycoeff, ncoeff, TY_REAL)
do i = 1, ncoeff {
junk = dtscan (dt)
call gargr (Memr[xcoeff+i-1])
call gargr (Memr[ycoeff+i-1])
}
# Restore distortion part of fit.
iferr {
call gsrestore (sx2, Memr[xcoeff])
} then {
call mfree (sx2, TY_STRUCT)
sx2 = NULL
}
iferr {
call gsrestore (sy2, Memr[ycoeff])
} then {
call mfree (sy2, TY_STRUCT)
sy2 = NULL
}
} else {
sx2 = NULL
sy2 = NULL
}
# Redefine the linear surfaces.
call gsfree (sx1)
call gscopy (newsx1, sx1)
call gsfree (newsx1)
call gsfree (sy1)
call gscopy (newsy1, sy1)
call gsfree (newsy1)
# Cleanup.
call mfree (xcoeff, TY_REAL)
call mfree (ycoeff, TY_REAL)
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_transformr (x, y, xt, yt, sx1, sy1, sx2, sy2)
real x, y # initial positions
real xt, yt # transformed positions
pointer sx1, sy1 # pointer to linear surfaces
pointer sx2, sy2 # pointer to distortion surfaces
real gseval()
begin
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)
end
# GEO_LINIT -- Initialize the linear part of the transformation.
procedure geo_linitd (sx1, sy1, sx2, sy2)
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
double xmag, ymag, xrot, yrot, xref, yref, xout, yout, xshift, yshift
double clgetd(), dgseval()
begin
# Initialize the surfaces.
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))
sx2 = NULL
sy2 = NULL
# Get the magnification parameters.
xmag = clgetd ("xmag")
if (IS_INDEFD(xmag))
xmag = double(1.0)
ymag = clgetd ("ymag")
if (IS_INDEFD(ymag))
ymag = double(1.0)
# Get the rotation parameters.
xrot = clgetd ("xrot")
if (IS_INDEFD(xrot))
xrot = double(0.0)
xrot = -DEGTORAD(xrot)
yrot = clgetd ("yrot")
if (IS_INDEFD(yrot))
yrot = double(0.0)
yrot = -DEGTORAD(yrot)
# Set the magnification and rotation coefficients.
call geo_rotmagd (sx1, sy1, xmag, ymag, xrot, yrot)
# Compute the origin of the reference coordinates.
xref = clgetd ("xref")
if (IS_INDEFD(xref))
xref = double(0.0)
yref = clgetd ("yref")
if (IS_INDEFD(yref))
yref = double(0.0)
# Compute the corresponding input coordinates.
xout = clgetd ("xout")
if (IS_INDEFD(xout))
xout = dgseval (sx1, xref, yref)
yout = clgetd ("yout")
if (IS_INDEFD(yout))
yout = dgseval (sy1, xref, yref)
# Set the shifts.
xshift = clgetd ("xshift")
yshift = clgetd ("yshift")
if (IS_INDEFD(xshift))
xshift = xout - dgseval (sx1, xref, yref)
if (IS_INDEFD(yshift))
yshift = yout - dgseval (sy1, xref, yref)
call geo_xyshiftd (sx1, sy1, xshift, yshift)
end
# GEO_SFREE -- Free the x and y surface fitting descriptors.
procedure geo_sfreed (sx1, sy1, sx2, sy2)
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
call dgsfree (sx1)
call dgsfree (sy1)
if (sx2 != NULL)
call dgsfree (sx2)
if (sy2 != NULL)
call dgsfree (sy2)
end
# GEO_SINIT -- Read the surface fits from the database file and make
# any requested changes.
procedure geo_sinitd (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
double xmag, ymag, xrot, yrot, xref, yref, xout, yout, xshift, yshift
pointer newsx1, newsy1, xcoeff, ycoeff
int dtlocate(), dtscan(), dtgeti()
double clgetd()
errchk dgsrestore
begin
# Locate record.
rec = dtlocate (dt, record)
# Get linear part of fit.
ncoeff = dtgeti (dt, rec, "surface1")
call malloc (xcoeff, ncoeff, TY_DOUBLE)
call malloc (ycoeff, ncoeff, TY_DOUBLE)
do i = 1, ncoeff {
junk = dtscan (dt)
call gargd (Memd[xcoeff+i-1])
call gargd (Memd[ycoeff+i-1])
}
# Restore linear part of fit.
call dgsrestore (sx1, Memd[xcoeff])
call dgsrestore (sy1, Memd[ycoeff])
# Get geometric transformation.
xmag = clgetd ("xmag")
ymag = clgetd ("ymag")
xrot = clgetd ("xrotation")
yrot = clgetd ("yrotation")
xout = clgetd ("xout")
yout = clgetd ("yout")
xref = clgetd ("xref")
yref = clgetd ("yref")
xshift = clgetd ("xshift")
yshift = clgetd ("yshift")
# Get set to adjust linear part of the fit.
call dgscopy (sx1, newsx1)
call dgscopy (sy1, newsy1)
if (geometry == GEO_DISTORTION)
call geo_rotmagd (newsx1, newsy1, double(1.0), double(1.0),
double(0.0), double(0.0))
else if (! IS_INDEFD(xmag) || ! IS_INDEFD(ymag) ||
! IS_INDEFD(xrot) || ! IS_INDEFD(yrot))
call geo_drotmagd (dt, rec, newsx1, newsy1, xmag, ymag,
xrot, yrot)
call geo_dxyshiftd (dt, rec, newsx1, newsy1, xout, yout, xref, yref,
xshift, yshift)
call dgssave (newsx1, Memd[xcoeff])
call dgssave (newsy1, Memd[ycoeff])
# Get distortion part of fit.
ncoeff = dtgeti (dt, rec, "surface2")
if (ncoeff > 0 && (geometry == GEO_GEOMETRIC ||
geometry == GEO_DISTORTION)) {
call realloc (xcoeff, ncoeff, TY_DOUBLE)
call realloc (ycoeff, ncoeff, TY_DOUBLE)
do i = 1, ncoeff {
junk = dtscan (dt)
call gargd (Memd[xcoeff+i-1])
call gargd (Memd[ycoeff+i-1])
}
# Restore distortion part of fit.
iferr {
call dgsrestore (sx2, Memd[xcoeff])
} then {
call mfree (sx2, TY_STRUCT)
sx2 = NULL
}
iferr {
call dgsrestore (sy2, Memd[ycoeff])
} then {
call mfree (sy2, TY_STRUCT)
sy2 = NULL
}
} else {
sx2 = NULL
sy2 = NULL
}
# Redefine the linear surfaces.
call dgsfree (sx1)
call dgscopy (newsx1, sx1)
call dgsfree (newsx1)
call dgsfree (sy1)
call dgscopy (newsy1, sy1)
call dgsfree (newsy1)
# Cleanup.
call mfree (xcoeff, TY_DOUBLE)
call mfree (ycoeff, TY_DOUBLE)
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_transformd (x, y, xt, yt, sx1, sy1, sx2, sy2)
double x, y # initial positions
double xt, yt # transformed positions
pointer sx1, sy1 # pointer to linear surfaces
pointer sx2, sy2 # pointer to distortion surfaces
double dgseval()
begin
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)
end
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