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+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+include <error.h>
+include <gset.h>
+include <imhdr.h>
+include "imexam.h"
+
+define HELP "iraf$lib/scr/imexamine.key"
+define PROMPT "imexamine options"
+define SZ_IMLIST 512
+
+
+# T_IMEXAMINE -- Examine images using image display, graphics, and text output.
+
+procedure t_imexamine ()
+
+real x, y
+pointer sp, cmd, imname, imlist, gp, ie, im
+int curtype, key, redraw, mode, nframes, nargs
+
+bool clgetb()
+pointer gopen(), ie_gimage(), imtopen()
+int imd_wcsver(), ie_gcur(), ie_getnframes()
+int btoi(), clgeti(), imtlen()
+
+begin
+ call smark (sp)
+ call salloc (ie, IE_LEN, TY_STRUCT)
+ call salloc (cmd, SZ_LINE, TY_CHAR)
+ call salloc (imname, SZ_FNAME, TY_CHAR)
+ call salloc (imlist, SZ_IMLIST, TY_CHAR)
+
+ # Initialize the imexamine descriptor.
+ call aclri (Memi[ie], IE_LEN)
+
+ # Determine if we will be accessing the image display, and if so,
+ # the maximum number of frames to be accessed.
+
+ IE_USEDISPLAY(ie) = btoi (clgetb ("use_display"))
+ if (IE_USEDISPLAY(ie) == YES) {
+ if (imd_wcsver() == 0)
+ ;
+ iferr (nframes = ie_getnframes (ie)) {
+ call eprintf ("cannot access display\n")
+ IE_USEDISPLAY(ie) = NO
+ }
+ }
+
+ # Get the list of images to be examined, if given on the command
+ # line. If no images are explicitly listed use the display to
+ # determine the images to be examined.
+
+ nargs = clgeti ("$nargs")
+ if (nargs > 0) {
+ call clgstr ("input", Memc[imlist], SZ_IMLIST)
+ IE_LIST(ie) = imtopen (Memc[imlist])
+ IE_LISTLEN(ie) = imtlen (IE_LIST(ie))
+ IE_INDEX(ie) = 1
+
+ if (nargs >= 1) {
+ # Set user specified display frame.
+ IE_DFRAME(ie) = 100 * clgeti ("frame") + 1
+ IE_NEWFRAME(ie) = IE_DFRAME(ie)
+ if (IE_USEDISPLAY(ie) == YES) {
+ nframes = max (IE_NEWFRAME(ie)/100, nframes)
+ IE_NFRAMES(ie) = nframes
+ }
+ } else {
+ # If we have to display an image and no frame was specified,
+ # default to frame 1 (should use the current display frame
+ # but we don't have a cursor read yet to tell us what it is).
+
+ IE_DFRAME(ie) = 101
+ IE_NEWFRAME(ie) = 101
+ }
+
+ } else {
+ IE_INDEX(ie) = 1
+ IE_DFRAME(ie) = 101
+ IE_NEWFRAME(ie) = 101
+ }
+
+ # Set the wcs, logfile and graphics.
+ call clgstr ("wcs", IE_WCSNAME(ie), IE_SZFNAME)
+ IE_LOGFD(ie) = NULL
+ call clgstr ("logfile", IE_LOGFILE(ie), IE_SZFNAME)
+ if (clgetb ("keeplog"))
+ iferr (call ie_openlog (ie))
+ call erract (EA_WARN)
+
+ call clgstr ("graphics", Memc[cmd], SZ_LINE)
+ gp = gopen (Memc[cmd], NEW_FILE+AW_DEFER, STDGRAPH)
+
+ # Initialize the data structure.
+ IE_IM(ie) = NULL
+ IE_DS(ie) = NULL
+ IE_PP(ie) = NULL
+ IE_MAPFRAME(ie) = 0
+ IE_NFRAMES(ie) = nframes
+ IE_ALLFRAMES(ie) = btoi (clgetb ("allframes"))
+ IE_GTYPE(ie) = NULL
+ IE_XORIGIN(ie) = 0.
+ IE_YORIGIN(ie) = 0.
+
+ # Access the first image. If an image list was specified and the
+ # display is being used, this will set the display frame to the first
+ # image listed, or display the first image if not already loaded into
+ # the display.
+
+ if (IE_LIST(ie) != NULL)
+ im = ie_gimage (ie, YES)
+
+ # Enter the cursor loop. The commands are returned by the
+ # IE_GCUR procedure.
+
+ x = 1.
+ y = 1.
+ redraw = NO
+ curtype = 'i'
+ mode = NEW_FILE
+
+ while (ie_gcur (ie, curtype, x,y, key, Memc[cmd], SZ_LINE) != EOF) {
+ # Check to see if the user has changed frames on us while in
+ # examine-image-list mode.
+
+ if (IE_USEDISPLAY(ie) == YES && IE_LIST(ie) != NULL &&
+ IE_NEWFRAME(ie)/100 != IE_MAPFRAME(ie)/100) {
+ call ie_imname (IE_DS(ie), IE_NEWFRAME(ie), Memc[imname],
+ SZ_FNAME)
+ call ie_addimage (ie, Memc[imname], imlist)
+ }
+
+ # Set workstation state.
+ switch (key) {
+ case 'a', 'b', 'd', 'm', 't', 'w', 'x', 'y', 'z', ',':
+ call gdeactivate (gp, 0)
+ }
+
+ # Act on the command key.
+ switch (key) {
+ case '?': # Print help
+ call gpagefile (gp, HELP, PROMPT)
+ case ':': # Process colon commands
+ call ie_colon (ie, Memc[cmd], gp, redraw)
+ if (redraw == YES) {
+ x = INDEF
+ y = INDEF
+ }
+ case 'f': # Redraw frame
+ redraw = YES
+ x = INDEF
+ y = INDEF
+ case 'a': # Aperture photometry
+ call ie_rimexam (NULL, NULL, ie, x, y)
+ case ',': # Aperture photometry
+ call ie_qrimexam (NULL, NULL, ie, x, y)
+
+ case 'b': # Print image region coordinates
+ call printf ("%4d %4d %4d %4d\n")
+ call pargi (IE_IX1(ie))
+ call pargi (IE_IX2(ie))
+ call pargi (IE_IY1(ie))
+ call pargi (IE_IY2(ie))
+
+ if (IE_LOGFD(ie) != NULL) {
+ call fprintf (IE_LOGFD(ie), "%4d %4d %4d %4d\n")
+ call pargi (IE_IX1(ie))
+ call pargi (IE_IX2(ie))
+ call pargi (IE_IY1(ie))
+ call pargi (IE_IY2(ie))
+ }
+
+ case 'c','e','h','j','k','s','l','r','u','v','.': # Graphs
+ IE_GTYPE(ie) = key
+ redraw = YES
+
+ case 'd': # Load the display.
+ # Query the user for the frame to be loaded, the current
+ # display frame being the default.
+
+ call clgstr ("image", Memc[imname], SZ_FNAME)
+ call clputi ("frame", IE_NEWFRAME(ie)/100)
+ IE_DFRAME(ie) = 100 * clgeti ("frame") + 1
+ IE_NEWFRAME(ie) = IE_DFRAME(ie)
+
+ if (IE_LIST(ie) != NULL)
+ call ie_addimage (ie, Memc[imname], imlist)
+ else
+ call ie_display (ie, Memc[imname], IE_DFRAME(ie)/100)
+
+ case 'g': # Graphics cursor
+ curtype = 'g'
+ case 'i': # Image cursor
+ curtype = 'i'
+ case 'm': # Image statistics
+ call ie_statistics (ie, x, y)
+
+ case 'n': # Next frame
+ if (IE_LIST(ie) != NULL) {
+ IE_INDEX(ie) = IE_INDEX(ie) + 1
+ if (IE_INDEX(ie) > IE_LISTLEN(ie))
+ IE_INDEX(ie) = 1
+ } else {
+ IE_NEWFRAME(ie) = 100 * (IE_NEWFRAME(ie)/100 + 1) + 1
+ if (IE_NEWFRAME(ie)/100 > IE_NFRAMES(ie))
+ IE_NEWFRAME(ie) = 101
+ }
+ im = ie_gimage (ie, YES)
+
+ case 'o': # Overplot
+ mode = APPEND
+
+ case 'p': # Previous frame
+ if (IE_LIST(ie) != NULL) {
+ IE_INDEX(ie) = IE_INDEX(ie) - 1
+ if (IE_INDEX(ie) <= 0)
+ IE_INDEX(ie) = IE_LISTLEN(ie)
+ } else {
+ IE_NEWFRAME(ie) = 100 * (IE_NEWFRAME(ie)/100 - 1) + 1
+ if (IE_NEWFRAME(ie)/100 <= 0)
+ IE_NEWFRAME(ie) = 100 * IE_NFRAMES(ie) + 1
+ }
+ im = ie_gimage (ie, YES)
+
+ case 'q': # Quit
+ break
+
+ case 't': # Extract a section.
+ call ie_timexam (ie, x, y)
+
+ case 'w': # Toggle logfile
+ if (IE_LOGFD(ie) == NULL) {
+ if (IE_LOGFILE(ie) == EOS)
+ call printf ("No log file defined\n")
+ else {
+ iferr (call ie_openlog (ie))
+ call erract (EA_WARN)
+ }
+ } else {
+ call close (IE_LOGFD(ie))
+ IE_LOGFD(ie) = NULL
+ call printf ("Logfile %s closed\n")
+ call pargstr (IE_LOGFILE(ie))
+ }
+
+ case 'x', 'y': # Positions
+ call ie_pos (ie, x, y, key)
+ case 'z': # Print grid
+ call ie_print (ie, x, y)
+ case 'I': # Immediate interrupt
+ call fatal (1, "Interrupt")
+ default: # Unrecognized command
+ call printf ("\007")
+ }
+
+ switch (key) {
+ case '?', 'a', 'b', 'd', 'm', 'w', 'x', 'y', 'z', ',':
+ IE_LASTKEY(ie) = key
+ }
+
+ # Draw or overplot a graph.
+ if (redraw == YES) {
+ switch (IE_GTYPE(ie)) {
+ case 'c': # column plot
+ call ie_cimexam (gp, mode, ie, x)
+ case 'e': # contour plot
+ call ie_eimexam (gp, mode, ie, x, y)
+ case 'h': # histogram plot
+ call ie_himexam (gp, mode, ie, x, y)
+ case 'j': # line plot
+ call ie_jimexam (gp, mode, ie, x, y, 1)
+ case 'k': # line plot
+ call ie_jimexam (gp, mode, ie, x, y, 2)
+ case 'l': # line plot
+ call ie_limexam (gp, mode, ie, y)
+ case 'r': # radial profile plot
+ call ie_rimexam (gp, mode, ie, x, y)
+ case 's': # surface plot
+ call ie_simexam (gp, mode, ie, x, y)
+ case 'u', 'v': # vector cut plot
+ call ie_vimexam (gp, mode, ie, x, y, IE_GTYPE(ie))
+ case '.': # radial profile plot
+ call ie_qrimexam (gp, mode, ie, x, y)
+ }
+ redraw = NO
+ mode = NEW_FILE
+ }
+ }
+
+ # Finish up.
+ call gclose (gp)
+ if (IE_IM(ie) != NULL && IE_IM(ie) != IE_DS(ie))
+ call imunmap (IE_IM(ie))
+ if (IE_MW(ie) != NULL)
+ call mw_close (IE_MW(ie))
+ if (IE_PP(ie) != NULL)
+ call clcpset (IE_PP(ie))
+ if (IE_DS(ie) != NULL)
+ call imunmap (IE_DS(ie))
+ if (IE_LOGFD(ie) != NULL)
+ call close (IE_LOGFD(ie))
+ if (IE_LIST(ie) != NULL)
+ call imtclose (IE_LIST(ie))
+ call sfree (sp)
+end
+
+
+# IE_ADDIMAGE -- Add an image to the image list if not already present in
+# the list, and display the image.
+
+procedure ie_addimage (ie, image, imlist)
+
+pointer ie #I imexamine descriptor
+char image[ARB] #I image name
+pointer imlist #I image list
+
+int i
+bool inlist
+pointer im, sp, lname
+pointer ie_gimage(), imtopen()
+int imtrgetim(), imtlen()
+bool streq()
+
+begin
+ call smark (sp)
+ call salloc (lname, SZ_FNAME, TY_CHAR)
+
+ # Is image already in list?
+ inlist = false
+ do i = 1, IE_LISTLEN(ie) {
+ if (imtrgetim (IE_LIST(ie), i, Memc[lname], SZ_FNAME) > 0)
+ if (streq (Memc[lname], image)) {
+ inlist = true
+ IE_INDEX(ie) = i
+ break
+ }
+ }
+
+ # Add to list if missing.
+ if (!inlist) {
+ call strcat (",", Memc[imlist], SZ_IMLIST)
+ call strcat (image, Memc[imlist], SZ_IMLIST)
+ call imtclose (IE_LIST(ie))
+ IE_LIST(ie) = imtopen (Memc[imlist])
+ IE_LISTLEN(ie) = imtlen (IE_LIST(ie))
+ IE_INDEX(ie) = IE_LISTLEN(ie)
+ }
+
+ # Display the image.
+ im = ie_gimage (ie, YES)
+ call sfree (sp)
+end
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