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# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
include <error.h>
include <math.h>
include "imexam.h"
# IE_POS -- Print cursor position and pixel value or set new origin.
# If the origin is not (0,0) print additional fields.
procedure ie_pos (ie, x, y, key)
pointer ie # IMEXAM structure
real x, y # Center of box
int key # Key ('x' positions, 'y' origin)
pointer im, data
real dx, dy, r, t, wx, wy, xo, yo
int x1, x2, y1, y2
pointer ie_gimage(), ie_gdata()
begin
switch (key) {
case 'x': # Print position and pixel value
iferr (im = ie_gimage (ie, NO)) {
call erract (EA_WARN)
return
}
x1 = x + 0.5
x2 = x + 0.5
y1 = y + 0.5
y2 = y + 0.5
iferr (data = ie_gdata (im, x1, x2, y1, y2)) {
call erract (EA_WARN)
return
}
call printf ("%7.2f %7.2f %7g")
call pargr (x)
call pargr (y)
call pargr (Memr[data])
# Print additional fields
if (IE_XORIGIN(ie) != 0. || IE_YORIGIN(ie) != 0.) {
dx = x - IE_XORIGIN(ie)
dy = y - IE_YORIGIN(ie)
r = sqrt (dx * dx + dy * dy)
t = mod (360. + RADTODEG (atan2 (dy, dx)), 360.)
call printf (" %7.f %7.2f %7.2f %7.2f %7.2f %5.1f")
call pargr (IE_XORIGIN(ie))
call pargr (IE_YORIGIN(ie))
call pargr (dx)
call pargr (dy)
call pargr (r)
call pargr (t)
}
call printf ("\n")
case 'y': # Set new origin
IE_XORIGIN(ie) = x
IE_YORIGIN(ie) = y
call printf ("Origin: %.2f %.2f\n")
call pargr (IE_XORIGIN(ie))
call pargr (IE_YORIGIN(ie))
}
# Print to logfile if needed.
if (IE_LOGFD(ie) != NULL) {
switch (key) {
case 'x':
call fprintf (IE_LOGFD(ie), "%7.2f %7.2f %7g")
call pargr (x)
call pargr (y)
call pargr (Memr[data])
if (IE_XORIGIN(ie) != 0. || IE_YORIGIN(ie) != 0.) {
dx = x - IE_XORIGIN(ie)
dy = y - IE_YORIGIN(ie)
r = sqrt (dx * dx + dy * dy)
t = mod (360. + RADTODEG (atan2 (dy, dx)), 360.)
call fprintf (IE_LOGFD(ie),
" %7.f %7.2f %7.2f %7.2f %7.2f %5.1f")
call pargr (IE_XORIGIN(ie))
call pargr (IE_YORIGIN(ie))
call pargr (dx)
call pargr (dy)
call pargr (r)
call pargr (t)
}
call fprintf (IE_LOGFD(ie), "\n")
case 'y': # Set new origin
IE_XORIGIN(ie) = x
IE_YORIGIN(ie) = y
call fprintf (IE_LOGFD(ie), "Origin: %.2f %.2f\n")
call pargr (IE_XORIGIN(ie))
call pargr (IE_YORIGIN(ie))
}
}
# Print in WCS if necessary.
call ie_mwctran (ie, x, y, wx, wy)
if (x == wx && y == wy)
return
call ie_mwctran (ie, IE_XORIGIN(ie), IE_YORIGIN(ie), xo, yo)
switch (key) {
case 'x': # Print position and pixel value
if (IE_XFORMAT(ie) == '%')
call printf (IE_XFORMAT(ie))
else
call printf ("%7g")
call pargr (wx)
call printf (" ")
if (IE_YFORMAT(ie) == '%')
call printf (IE_YFORMAT(ie))
else
call printf ("%7g")
call pargr (wy)
call printf (" %7g")
call pargr (Memr[data])
# Print additional fields
if (IE_XORIGIN(ie) != 0. || IE_YORIGIN(ie) != 0.) {
dx = wx - xo
dy = wy - yo
r = sqrt (dx * dx + dy * dy)
t = mod (360. + RADTODEG (atan2 (dy, dx)), 360.)
call printf (" %7g %7g %7g %7g %7g %5.1f")
call pargr (xo)
call pargr (yo)
call pargr (dx)
call pargr (dy)
call pargr (r)
call pargr (t)
}
call printf ("\n")
case 'y': # Set new origin
call printf ("Origin: %7g %7g\n")
call pargr (xo)
call pargr (yo)
}
# Print to logfile if needed.
if (IE_LOGFD(ie) != NULL) {
switch (key) {
case 'x':
if (IE_XFORMAT(ie) == '%')
call fprintf (IE_LOGFD(ie), IE_XFORMAT(ie))
else
call fprintf (IE_LOGFD(ie), "%7g")
call pargr (wx)
call fprintf (IE_LOGFD(ie), " ")
if (IE_YFORMAT(ie) == '%')
call fprintf (IE_LOGFD(ie), IE_YFORMAT(ie))
else
call fprintf (IE_LOGFD(ie), "%7g")
call pargr (wy)
call fprintf (IE_LOGFD(ie), " %7g")
call pargr (Memr[data])
if (IE_XORIGIN(ie) != 0. || IE_YORIGIN(ie) != 0.) {
dx = wx - xo
dy = wy - yo
r = sqrt (dx * dx + dy * dy)
t = mod (360. + RADTODEG (atan2 (dy, dx)), 360.)
call fprintf (IE_LOGFD(ie),
" %7g %7g %7g %7g %7g %5.1f")
call pargr (xo)
call pargr (yo)
call pargr (dx)
call pargr (dy)
call pargr (r)
call pargr (t)
}
call fprintf (IE_LOGFD(ie), "\n")
case 'y': # Set new origin
call fprintf (IE_LOGFD(ie), "Origin: %7g %7g\n")
call pargr (xo)
call pargr (yo)
}
}
end
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