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* .3dx writing routines
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* Copyright (C) 2000, 2001 Phil Underwood
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* Copyright (C) 2001, 2002, 2003 Olly Betts
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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char *firstfilename, *startingdir;
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int fUseNewFormat = 0;
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IMG_FILENOTFOUND = /*Couldn't open data file `%s'*/24,
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IMG_OUTOFMEMORY = /*Out of memory %.0s*/38,
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IMG_DIRECTORY = /*Filename `%s' refers to directory*/44,
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IMG_CANTOPENOUT = /*Failed to open output file `%s'*/47,
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IMG_BADFORMAT = /*Bad 3d image file `%s'*/106
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} img_errno = IMG_NONE;
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/* put counted string */
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fputcs(const char *s, FILE *fh)
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/* if the label is empty or > 255 chars. store 0 in the length byte
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* followed by a 32 bit length value */
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if (len == 0 || len > 255) {
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if (putc(0, fh) == EOF) return EOF;
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put32((INT32_T)len, fh);
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if (ferror(fh)) return EOF;
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if (putc((unsigned char)len, fh) == EOF) return EOF;
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/* length on disk of counted string */
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/* if the label is empty or > 255 chars. store 0 in the length byte
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* followed by a 32 bit length value */
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if (len == 0 || len > 255) return len + 5;
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static char *basesource;
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static int statcount = 1; /* this is the total number of things added */
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if (twiglet->from) return 1;
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SVX_ASSERT(twiglet->to);
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twiglet->count += scount(lib);
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return (twiglet->count ? 1 : 0);
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cave_write_title(const char *title, img *p_img)
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putc(TITLE_3D, p_img->fh);
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fputcs(title, p_img->fh);
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cave_write_pos(img * p_img, pos *pid, prefix *pre)
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pid->id = (INT32_T)statcount;
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len = cslen(tag) + 12 + 4;
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/* storage station name, 12 for data, 4 for id */
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putc(STATION_3D, p_img->fh);
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if (len == 0 || len > 255) {
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if (putc(0, p_img->fh) == EOF) return EOF;
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put32((INT32_T)len, p_img->fh);
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if (ferror(p_img->fh)) return EOF;
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if (putc((unsigned char)len, p_img->fh) == EOF) return EOF;
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put32((INT32_T)statcount, p_img->fh); /* station ID */
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put32((INT32_T)(pid->p[0] * 100.0), p_img->fh); /* X in cm */
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put32((INT32_T)(pid->p[1] * 100.0), p_img->fh); /* Y */
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put32((INT32_T)(pid->p[2] * 100.0), p_img->fh); /* Z */
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fputcs(tag, p_img->fh);
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/* we've already put this in the file, so just a link is needed */
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putc(STATLINK_3D, p_img->fh);
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putc(0x04, p_img->fh);
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put32((INT32_T)pid->id, p_img->fh);
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cave_open_write(const char *fnm, const char *title)
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if (fDirectory(fnm)) {
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img_errno = IMG_DIRECTORY;
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p_img = (img *)xosmalloc(ossizeof(img));
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img_errno = IMG_OUTOFMEMORY;
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p_img->fh = fopen(fnm, "wb");
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img_errno = IMG_CANTOPENOUT;
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fputs("SVX3d", p_img->fh);
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putc(0x00, p_img->fh); /* Major version 0 */
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putc(0x0A, p_img->fh); /* Minor version 10*/
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put32(0, p_img->fh); /* dummy number for num of stations: fill later */
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cave_write_title(title, p_img);
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cave_write_source(img * p_img, const char *source)
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/* create a relative path, given an absolute dir, and an absolute file */
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/* part 1. find where they differ */
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char *allocated_source = NULL;
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/* is it an absolute? */
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if (!fAbsoluteFnm(source)) {
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allocated_source = use_path(startingdir, source);
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source = allocated_source;
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/* strip source down to just a file name... */
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if (strncmp(source, basesource, strlen(basesource)) != 0) {
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printf("Warning: source links may not work\n");
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source = source + strlen(basesource);
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putc(SOURCE_3D, p_img->fh);
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fputcs(source, p_img->fh);
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osfree(allocated_source);
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save3d(img *p_img, twig *sticky)
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unsigned int stubcount;
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double err, length, offset;
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for (twiglet = sticky->right; twiglet; twiglet = twiglet->right) {
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if (!twiglet->to) { /* fixed point */
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cave_write_pos(p_img, twiglet->from->pos, twiglet->from);
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/* calculate an average percentage error, based on %age change of polars */
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/* offset is how far the _to_ point is from where we thought it would be */
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offset = hypot(twiglet->to->pos->p[2] - (twiglet->from->pos->p[2] +
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hypot(twiglet->to->pos->p[0] - (twiglet->from->pos->p[0] +
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twiglet->to->pos->p[1] - (twiglet->from->pos->p[1] +
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twiglet->delta[1])));
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/* length is our reconstituted expected length */
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length = hypot(hypot(twiglet->delta[0], twiglet->delta[1]),
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if (strcmp(twiglet->from->ident, "86") == 0)
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printf("deltas... %g %g %g length %g offset %g",
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twiglet->delta[0], twiglet->delta[1], twiglet->delta[2],
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if (fabs(length) < 0.01) {
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err = 0; /* What is the error for a leg with zero length?
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* Phil - he say none. */
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err = 10000.0 * offset / length;
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putc(LEG_3D, p_img->fh);
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put16((INT16_T)0x02, p_img->fh);
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putc(0x04, p_img->fh);
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put32((INT32_T)err, p_img->fh); /* output error in %*100 */
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cave_write_pos(p_img, twiglet->from->pos, twiglet->from);
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cave_write_pos(p_img, twiglet->to->pos, twiglet->to);
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if (twiglet->count) {
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putc(BRANCH_3D, p_img->fh);
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/* number of records - legs + values */
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if (twiglet->source) stubcount++;
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if (twiglet->drawings) stubcount++;
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if (twiglet->instruments) stubcount++;
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if (twiglet->tape) stubcount++;
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if (twiglet->date) stubcount++;
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stubcount += twiglet->count;
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if (stubcount > 32767) {
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put32(stubcount, p_img->fh);
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put16((unsigned short)stubcount, p_img->fh);
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ltag = cslen(twiglet->to->ident);
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putc((unsigned char)ltag, p_img->fh);
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put32(ltag, p_img->fh);
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fputcs(twiglet->to->ident, p_img->fh);
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if (twiglet->source) cave_write_source(p_img, twiglet->source);
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putc(DATE_3D, p_img->fh);
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fputcs(twiglet->date, p_img->fh);
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if (twiglet->drawings) {
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putc(DRAWINGS_3D, p_img->fh);
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fputcs(twiglet->drawings, p_img->fh);
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if (twiglet->instruments) {
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putc(INSTRUMENTS_3D, p_img->fh);
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fputcs(twiglet->instruments, p_img->fh);
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putc(TAPE_3D, p_img->fh);
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fputcs(twiglet->tape, p_img->fh);
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save3d(p_img, twiglet->down);
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cave_write_base_source(img *p_img)
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/* is it an absolute? */
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if (fAbsoluteFnm(firstfilename)) {
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basesource = path_from_fnm(firstfilename);
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temp = use_path(startingdir,firstfilename);
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basesource = path_from_fnm(temp);
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/* remove any ./../. etcs but not today */
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temp = osstrdup(basesource);
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realpath(temp, basesource);
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putc(BASE_SOURCE_3D, p_img->fh);
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fputcs(basesource, p_img->fh);
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/* get the actual file name */
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temp = leaf_from_fnm(firstfilename);
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putc(BASE_FILE_3D, p_img->fh);
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fputcs(temp, p_img->fh);
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cave_close(img *p_img)
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/* let's do the twiglet traverse! */
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twig *twiglet = rhizome->down;
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cave_write_base_source(p_img);
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save3d(p_img, twiglet);
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/* Write end of data marker */
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putc(END_3D, p_img->fh);
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/* and finally write how many stations there are */
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fseek(p_img->fh, 7L, SEEK_SET);
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put32((INT32_T)statcount, p_img->fh);
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if (ferror(p_img->fh)) result = 0;
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if (fclose(p_img->fh) == EOF) result = 0;
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create_twig(prefix *pre, const char *fname)
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lib = get_twig(pre->up); /* get the active twig for parent's prefix */
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twiglet = osnew(twig);
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twiglet->from = NULL;
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twiglet->sourceval=0; /* lowest priority */
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pre->twig_link = twiglet; /* connect both ways */
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twiglet->right = NULL;
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twiglet->drawings = twiglet->date = twiglet->tape = twiglet->instruments
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twiglet->source = osstrdup(fname);
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twiglet->count = lib->count + 1;
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/* ie we are changing the global attachment update...*/
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if (lib == limb) limb = twiglet;
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lib->right = twiglet;
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twiglet->up = lib->up;
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twiglet = osnew(twig);
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twiglet->to = twiglet->from = NULL;
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twiglet->sourceval = 0;
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twiglet->drawings = twiglet->source = twiglet->instruments
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= twiglet->date = twiglet->tape = NULL;
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twiglet->down = twiglet->right = NULL;
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get_twig(prefix *pre)
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if (pre && pre->twig_link) {
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temp = pre->twig_link->down;
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if (temp) while (temp->right) temp = temp->right;
added
removed
src/new3dout.c
