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# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
include <mach.h>
include <math.h>
include <mwset.h>
include "imwcs.h"
task simple = t_simple,
wcs = t_wcs,
float = t_float,
imtest = t_imtest,
inv = t_inv,
save = t_save,
load = t_load
define SAVELEN 10240
# SIMPLE -- Simple test of the most common interface routines.
procedure t_simple()
pointer mw, ct, bp
int buflen, nchars
real ltm[2,2], ltv[2], x1,y1, x2,y2
pointer mw_open(), mw_sctran()
int mw_save()
begin
call memchk()
mw = mw_open (NULL, 2)
ltm[1,1] = 1.0; ltm[1,2] = 0.0
ltm[2,1] = 0.0; ltm[2,2] = 1.0
ltv[1] = 0.0; ltv[2] = 0.0
call mw_sltermr (mw, ltm, ltv, 2)
ct = mw_sctran (mw, "logical", "physical", 0)
x1 = 0.5; y1 = 0.5
call mw_c2tranr (ct, x1, y1, x2, y2)
call eprintf ("[%g,%g] -> [%g,%g]\n")
call pargr (x1); call pargr (y1)
call pargr (x2); call pargr (y2)
bp = NULL
nchars = mw_save (mw, bp, buflen)
call mw_load (mw, bp)
call eprintf ("save/load, save buflen = %d chars, nchars=%d\n")
call pargi (buflen)
call pargi (nchars)
ct = mw_sctran (mw, "logical", "physical", 0)
x1 = 0.5; y1 = 0.5
call mw_c2tranr (ct, x1, y1, x2, y2)
call eprintf ("[%g,%g] -> [%g,%g]\n")
call pargr (x1); call pargr (y1)
call pargr (x2); call pargr (y2)
call mw_close (mw)
end
# WCS -- Test the creation and use of a world coordinate system.
procedure t_wcs()
pointer mw, ct1, ct2, ct3
real pv[100], wv[100]
real theta, center[2], scale[2], shift[2]
real ltm[3,3], ltv[3], x1,y1, x2,y2
double r[3], w[3], cd[3,3]
double l2m[2,2], l2v_1[2], l2v_2[2], d_theta
int ndim, axes[3], naxes, npts, i
pointer mw_open(), mw_sctran()
real mw_c1tranr()
begin
call memchk()
ndim = 3
# Create a unitary, 3 dim WCS.
mw = mw_open (NULL, ndim)
# Examine the Lterm.
call plterm (mw, ltm, ltv, ndim)
# Apply a transform to the first 2 axes.
d_theta = DEGTORAD(30.0D0)
l2m[1,1] = cos(d_theta); l2m[2,1] = sin(d_theta)
l2m[1,2] = -sin(d_theta); l2m[2,2] = cos(d_theta)
l2v_1[1] = 0.0; l2v_1[2] = 0.0
l2v_2[1] = 10.0; l2v_2[2] = 20.0
#l2v_2[1] = 0.0; l2v_2[2] = 0.0
#call mw_translated (mw, l2v_1, l2m, l2v_2, 2)
theta = d_theta; call aclrr (center, 2)
call mw_rotate (mw, theta, center, 3B)
shift[1] = 10.0; shift[2] = 20.0
call mw_shift (mw, shift, 3B)
scale[1] = 4.0; scale[2] = 0.2
call mw_scale (mw, scale, 3B)
# Examine the Lterm.
call plterm (mw, ltm, ltv, ndim)
# Apply the inverse transform.
d_theta = -d_theta
l2m[1,1] = cos(d_theta); l2m[2,1] = sin(d_theta)
l2m[1,2] = -sin(d_theta); l2m[2,2] = cos(d_theta)
call amovd (l2v_2, l2v_1, 2); call aclrd (l2v_2, 2)
#call mw_translated (mw, l2v_1, l2m, l2v_2, 2)
scale[1] = 1.0/scale[1]; scale[2] = 1.0/scale[2]
call mw_scale (mw, scale, 3B)
shift[1] = -shift[1]; shift[2] = -shift[2]
call mw_shift (mw, shift, 3B)
call mw_rotate (mw, -theta, center, 3B)
# Examine the Lterm.
call plterm (mw, ltm, ltv, ndim)
# Add a WCS.
call mw_newsystem (mw, "sky", 3)
cd[1,1] = .01D0; cd[2,1] = 0; cd[3,1] = 0
cd[1,2] = 0; cd[2,2] = .01D0; cd[3,2] = 0
cd[1,3] = 0; cd[2,3] = 0; cd[3,3] = 1
r[1] = 0; r[2] = 0; r[3] = 0
w[1] = 100; w[2] = 20; w[3] = 0
# Put a tangent projection on axis 1&2.
call mw_swtermd (mw, r, w, cd, ndim)
axes[1] = 1; axes[2] = 2; naxes = 2
call mw_swtype (mw, axes, naxes, "tan",
"axis 1: axtype=ra axis 2: axtype=dec")
# Put a simple sampled curve on axis 3.
call mw_swtype (mw, 3, 1, "sampled", "")
npts = 10
do i = 1, npts {
pv[i] = i
wv[i] = i * 2
}
call mw_swsampr (mw, 3, pv, wv, npts)
# Try a transform on the axis 1-2 plane.
ct1 = mw_sctran (mw, "logical", "sky", 3B)
x1 = 50.0; y1 = -20.0
call mw_c2tranr (ct1, x1,y1, x2,y2)
call eprintf ("[%g,%g]logical -> [%g,%g]sky\n")
call pargr (x1); call pargr (y1)
call pargr (x2); call pargr (y2)
# Check out the reverse transform.
ct2 = mw_sctran (mw, "sky", "logical", 3B)
call mw_c2tranr (ct2, x2,y2, x1,y1)
call eprintf ("[%g,%g]sky -> [%g,%g]logical\n")
call pargr (x2); call pargr (y2)
call pargr (x1); call pargr (y1)
# Try evaluating the sampled axis.
ct3 = mw_sctran (mw, "physical", "sky", 4B)
x1 = 4.5; x2 = mw_c1tranr (ct3, x1)
call eprintf ("axis 3: %gL -> %gS\n")
call pargr (x1)
call pargr (x2)
call mw_close (mw)
end
# PLTERM -- Print the Lterm.
procedure plterm (mw, ltm, ltv, ndim)
pointer mw
real ltm[ndim,ndim]
real ltv[ndim]
int ndim
int i, j
begin
# Examine the Lterm.
call mw_gltermr (mw, ltm, ltv, ndim)
call eprintf ("----- lterm -----\n")
do j = 1, ndim {
do i = 1, ndim {
call eprintf (" %8.3f")
call pargr (ltm[i,j])
}
call eprintf (" : %8.3f\n")
call pargr (ltv[j])
}
end
# IMTEST -- Test the image header WCS save and load facilities.
procedure t_imtest()
double cd[3,3], r[3], w[3]
int ndim, naxes, axes[2], npts, i
pointer mw, ct1, ct2, ct3, im, iw, cp
real theta, center[3], shift[3], scale[3], x1,y1, x2,y2, pv[10], wv[10]
pointer mw_open(), mw_sctran(), immap(), iw_rfits()
real mw_c1tranr()
begin
call memchk()
ndim = 3
# Create a unitary, 3 dim WCS.
mw = mw_open (NULL, ndim)
# Apply a transform to the first 2 axes.
call aclrr (center, 2)
theta = DEGTORAD(30.0D0)
shift[1] = 10.0; shift[2] = 20.0
scale[1] = 4.0; scale[2] = 0.2
call mw_rotate (mw, theta, center, 3B)
call mw_shift (mw, shift, 3B)
call mw_scale (mw, scale, 3B)
# Add a WCS.
call mw_newsystem (mw, "sky", 3)
cd[1,1] = .01D0; cd[2,1] = 0; cd[3,1] = 0
cd[1,2] = 0; cd[2,2] = .01D0; cd[3,2] = 0
cd[1,3] = 0; cd[2,3] = 0; cd[3,3] = 1
r[1] = 0; r[2] = 0; r[3] = 0
w[1] = 100; w[2] = 20; w[3] = 0
# Put a tangent projection on axis 1&2.
call mw_swtermd (mw, r, w, cd, ndim)
axes[1] = 1; axes[2] = 2; naxes = 2
call mw_swtype (mw, axes, naxes, "tan",
"axis 1: axtype=ra axis 2: axtype=dec")
# Put a simple sampled curve on axis 3.
call mw_swtype (mw, 3, 1, "sampled", "")
npts = 10
do i = 1, npts {
pv[i] = i
wv[i] = i * 2
}
call mw_swsampr (mw, 3, pv, wv, npts)
# Evaluate tests 1.
# -----------------
# Try a transform on the axis 1-2 plane.
ct1 = mw_sctran (mw, "logical", "sky", 3B)
x1 = 50.0; y1 = -20.0
call mw_c2tranr (ct1, x1,y1, x2,y2)
call eprintf ("[%g,%g]logical -> [%g,%g]sky\n")
call pargr (x1); call pargr (y1)
call pargr (x2); call pargr (y2)
# Check out the reverse transform.
ct2 = mw_sctran (mw, "sky", "logical", 3B)
call mw_c2tranr (ct2, x2,y2, x1,y1)
call eprintf ("[%g,%g]sky -> [%g,%g]logical\n")
call pargr (x2); call pargr (y2)
call pargr (x1); call pargr (y1)
# Try evaluating the sampled axis.
ct3 = mw_sctran (mw, "physical", "sky", 4B)
x1 = 4.5; x2 = mw_c1tranr (ct3, x1)
call eprintf ("axis 3: %gL -> %gS\n")
call pargr (x1)
call pargr (x2)
# Test image header save/load.
call eprintf ("save WCS in image header...\n")
#iferr (call imdelete ("pix"))
# ;
im = immap ("pix", READ_WRITE, 0)
call mw_saveim (mw, im)
# See what we saved.
call printf ("-------- IMAGE HEADER --------\n")
iw = iw_rfits (mw, im, RF_REFERENCE)
do i = 1, IW_NCARDS(iw) {
cp = IW_CARD(iw,i)
call write (STDOUT, Memc[C_RP(cp)], 80)
call putci (STDOUT, '\n')
}
call iw_cfits (iw)
call printf ("------------------------------\n")
call flush (STDOUT)
# Reload saved header.
call mw_loadim (mw, im)
# Evaluate tests 2.
# -----------------
# Try a transform on the axis 1-2 plane.
ct1 = mw_sctran (mw, "logical", "sky", 3B)
x1 = 50.0; y1 = -20.0
call mw_c2tranr (ct1, x1,y1, x2,y2)
call eprintf ("[%g,%g]logical -> [%g,%g]sky\n")
call pargr (x1); call pargr (y1)
call pargr (x2); call pargr (y2)
# Check out the reverse transform.
ct2 = mw_sctran (mw, "sky", "logical", 3B)
call mw_c2tranr (ct2, x2,y2, x1,y1)
call eprintf ("[%g,%g]sky -> [%g,%g]logical\n")
call pargr (x2); call pargr (y2)
call pargr (x1); call pargr (y1)
# Try evaluating the sampled axis.
ct3 = mw_sctran (mw, "physical", "sky", 4B)
x1 = 4.5; x2 = mw_c1tranr (ct3, x1)
call eprintf ("axis 3: %gL -> %gS\n")
call pargr (x1)
call pargr (x2)
call mw_close (mw)
end
# INV -- Test matrix inversion.
procedure t_inv()
int i, j
double a[3,3], b[3,3], c[3,3]
long seed, clktime()
real urand()
begin
# Construct the identity matrix.
do i = 1, 3 {
do j = 1, 3
a[i,j] = 0.0
a[i,i] = 1.0
}
# Invert the matrix.
call mw_invertd (a, b, 3)
# Print the inverse.
call printf ("inverse of identity matrix:\n")
do i = 1, 3 {
do j = 1, 3 {
call printf (" %20.*f")
call pargi (NDIGITS_DP)
call pargd (b[i,j])
}
call printf ("\n")
}
# Compute a random matrix.
seed = clktime(0)
do i = 1, 3
do j = 1, 3
a[i,j] = urand (seed)
# Invert the matrix.
call mw_invertd (a, b, 3)
call mw_invertd (b, c, 3)
# Print the difference of the original and the inverted inverse.
call printf ("difference of inverse of random matrix:\n")
do i = 1, 3 {
do j = 1, 3 {
call printf (" %20.*f")
call pargi (NDIGITS_DP)
call pargd (a[i,j] - c[i,j])
}
call printf ("\n")
}
end
# SAVE -- Save a test WCS to a file.
procedure t_save()
pointer mw, bp
double cd[3,3], r[3], w[3]
int ndim, naxes, axes[2], npts, buflen, nchars, fd, i
real theta, center[3], shift[3], scale[3], pv[10], wv[10]
int open(), mw_save
pointer mw_open()
begin
ndim = 3
# Create a unitary, 3 dim WCS.
mw = mw_open (NULL, ndim)
# Apply a transform to the first 2 axes.
call aclrr (center, 2)
theta = DEGTORAD(30.0D0)
shift[1] = 10.0; shift[2] = 20.0
scale[1] = 4.0; scale[2] = 0.2
call mw_rotate (mw, theta, center, 3B)
call mw_shift (mw, shift, 3B)
call mw_scale (mw, scale, 3B)
# Add a WCS.
call mw_newsystem (mw, "sky", 3)
cd[1,1] = .01D0; cd[2,1] = 0; cd[3,1] = 0
cd[1,2] = 0; cd[2,2] = .01D0; cd[3,2] = 0
cd[1,3] = 0; cd[2,3] = 0; cd[3,3] = 1
r[1] = 0; r[2] = 0; r[3] = 0
w[1] = 100; w[2] = 20; w[3] = 0
# Put a tangent projection on axis 1&2.
call mw_swtermd (mw, r, w, cd, ndim)
axes[1] = 1; axes[2] = 2; naxes = 2
call mw_swtype (mw, axes, naxes, "tan",
"axis 1: axtype=ra axis 2: axtype=dec")
# Put a simple sampled curve on axis 3.
call mw_swtype (mw, 3, 1, "sampled", "")
npts = 10
do i = 1, npts {
pv[i] = i
wv[i] = i * 2
}
call mw_swsampr (mw, 3, pv, wv, npts)
# Display the new WCS.
call mw_show (mw, STDOUT, 0)
# Save to a file.
bp = NULL; buflen = 0
nchars = mw_save (mw, bp, buflen)
fd = open ("mwcs.sav", NEW_FILE, BINARY_FILE)
call write (fd, Memc[bp], nchars)
call close (fd)
call mfree (bp, TY_CHAR)
call mw_close (mw)
end
# LOAD -- Load a test WCS from a file.
procedure t_load()
pointer mw, bp
int fd, nchars
char fname[SZ_FNAME]
int open(), read()
pointer mw_open()
begin
call clgstr ("savefile", fname, SZ_FNAME)
call malloc (bp, SAVELEN, TY_CHAR)
# Open and read save file.
fd = open (fname, READ_ONLY, BINARY_FILE)
nchars = read (fd, Memc[bp], SAVELEN)
call printf ("read %d chars from %s\n")
call pargi (nchars)
call pargstr (fname)
mw = mw_open (NULL, 3)
call mw_load (mw, bp)
# Display the new WCS.
call mw_show (mw, STDOUT, 0)
call mw_close (mw)
call mfree (bp, TY_CHAR)
end
# FLOAT -- Test single to double conversions.
procedure t_float()
real r
double x
begin
x = sin(0.34567D0)
r = 1.0
call achtrd (r, x, 1)
call printf ("x = %g\n")
call pargd (x)
end
# MEMCHK -- Enable runtime dynamic memory verification. System dependent,
# should be commented out unless a Fortran callable MEMVER is available for
# linking.
procedure memchk()
begin
# call memver (2)
end
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