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/*
*
* This program (Pamslice) was derived by Bryan Henderson in July 2002
* from Pgmslice by Jos Dingjan. Pgmslice did the same thing, but
* only on PGM images. Pamslice is a total rewrite.
*
* Copyright (C) 2000 Jos Dingjan <jos@tuatha.org>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
enum orientation {ROW, COLUMN};
#include "pm_c_util.h"
#include "pam.h"
#include "shhopt.h"
struct cmdlineInfo {
/* All the information the user supplied in the command line,
in a form easy for the program to use.
*/
const char *inputFilespec; /* Filespec of input file */
enum orientation orientation;
union {
unsigned int row;
unsigned int col;
} u;
unsigned int onePlane;
unsigned int plane;
unsigned int xmgr;
};
static void
parseCommandLine(int argc, char ** const argv,
struct cmdlineInfo * const cmdlineP) {
/*----------------------------------------------------------------------------
Note that the file spec array we return is stored in the storage that
was passed to us as the argv array.
-----------------------------------------------------------------------------*/
optEntry *option_def = malloc(100*sizeof(optEntry));
/* Instructions to OptParseOptions3 on how to parse our options.
*/
optStruct3 opt;
unsigned int option_def_index;
unsigned int rowSpec, colSpec;
option_def_index = 0; /* incremented by OPTENTRY */
OPTENT3(0, "row", OPT_UINT, &cmdlineP->u.row, &rowSpec, 0);
OPTENT3(0, "column", OPT_UINT, &cmdlineP->u.col, &colSpec, 0);
OPTENT3(0, "plane", OPT_UINT, &cmdlineP->plane, &cmdlineP->onePlane, 0);
OPTENT3(0, "xmgr", OPT_FLAG, NULL, &cmdlineP->xmgr, 0);
opt.opt_table = option_def;
opt.short_allowed = FALSE; /* We have no short (old-fashioned) options */
opt.allowNegNum = FALSE; /* We have no parms that are negative numbers */
pm_optParseOptions3(&argc, argv, opt, sizeof(opt), 0);
/* Uses and sets argc, argv, and some of *cmdlineP and others. */
if (rowSpec && colSpec)
pm_error("You cannot specify both -row and -col");
if (argc-1 > 1)
pm_error("Too many arguments (%d). Only argument is filename.",
argc-1);
else if (argc-1 == 1)
cmdlineP->inputFilespec = argv[1];
else
cmdlineP->inputFilespec = "-";
if (rowSpec)
cmdlineP->orientation = ROW;
else if (colSpec)
cmdlineP->orientation = COLUMN;
else
pm_error("You must specify either -column or -row");
}
static void
printSlice(FILE * const outfile,
tuple ** const tuples,
unsigned int const rowstart,
unsigned int const rowend,
unsigned int const colstart,
unsigned int const colend,
unsigned int const planestart,
unsigned int const planeend,
bool const xmgr) {
unsigned int count;
unsigned int row;
if (xmgr) {
fprintf(outfile,"@ title \"Graylevel\"\n");
fprintf(outfile,"@ subtitle \"from (%d,%d) to (%d,%d)\"\n",
colstart, rowstart, colend, rowend);
if (colend - colstart == 1)
fprintf(outfile,"@ xaxis label \"row\"\n");
else
fprintf(outfile,"@ xaxis label \"column\"\n");
fprintf(outfile,"@ yaxis label \"grayvalue\"\n");
if (planeend - planestart == 1)
fprintf(stdout,"@ type xy\n");
else
fprintf(stdout,"@ type nxy\n");
}
count = 0;
for (row = rowstart; row < rowend; ++row) {
unsigned int col;
for (col = colstart; col < colend; ++col) {
unsigned int plane;
fprintf(outfile, "%d ", count++);
for (plane = planestart; plane < planeend; ++plane)
fprintf(outfile, "%lu ", tuples[row][col][plane]);
fprintf(outfile, "\n");
}
}
}
int
main(int argc, char *argv[]) {
struct cmdlineInfo cmdline;
FILE *ifP;
struct pam inpam;
tuple **tuples;
unsigned int colstart, colend, rowstart, rowend, planestart, planeend;
pgm_init( &argc, argv );
parseCommandLine(argc, argv, &cmdline);
ifP = pm_openr(cmdline.inputFilespec);
tuples = pnm_readpam(ifP, &inpam, PAM_STRUCT_SIZE(tuple_type));
switch (cmdline.orientation) {
case COLUMN:
if (cmdline.u.col >= inpam.width)
pm_error("You specified column %u, but there are only %u columns "
"in the image.", cmdline.u.col, inpam.width);
colstart = cmdline.u.col;
colend = colstart + 1;
rowstart = 0;
rowend = inpam.height;
break;
case ROW:
if (cmdline.u.row >= inpam.height)
pm_error("You specified row %u, but there are only %u rows "
"in the image.", cmdline.u.row, inpam.height);
colstart = 0;
colend = inpam.width;
rowstart = cmdline.u.row;
rowend = rowstart + 1;
break;
}
if (cmdline.onePlane) {
if (cmdline.plane >= inpam.depth)
pm_error("You specified plane %u, but there are only %u planes "
"in the image.", cmdline.plane, inpam.depth);
planestart = cmdline.plane;
planeend = planestart + 1;
} else {
planestart = 0;
planeend = inpam.depth;
}
printSlice(stdout, tuples,
rowstart, rowend, colstart, colend, planestart, planeend,
cmdline.xmgr);
pm_close(ifP);
pm_close(stdout);
exit(0);
}
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