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greg |
2.1 |
#ifndef lint
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greg |
2.5 |
static const char RCSid[] = "$Id: robjutil.c,v 2.4 2021/03/12 18:32:33 greg Exp $";
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greg |
2.1 |
#endif
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/*
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* Utility program for fixing up Wavefront .OBJ files.
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*
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "rtio.h"
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#include "objutil.h"
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const char *progname;
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int verbose = 0;
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int
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main(int argc, char *argv[])
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{
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Scene *myScene;
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int radout = 0;
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const char *grp[64];
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int ngrps = 0;
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int save_grps = 1;
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const char *mat[64];
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int nmats = 0;
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int save_mats = 1;
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int do_tex = 0;
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int do_norm = 0;
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greg |
2.4 |
int do_triangulate = 0;
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greg |
2.2 |
char *xfm = NULL;
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greg |
2.1 |
char cbuf[256];
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double verteps = -1.;
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int i, n;
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progname = argv[0];
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/* process options */
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for (i = 1; i < argc && (argv[i][0] == '-' || argv[i][0] == '+'); i++)
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switch (argv[i][1]) {
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case 'v': /* verbose mode */
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verbose = (argv[i][0] == '+');
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break;
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case 'g': /* save/delete group */
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if (save_grps != (argv[i][0] == '+')) {
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if (ngrps) {
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fprintf(stderr,
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"%s: -g and +g are mutually exclusive\n",
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argv[0]);
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exit(1);
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}
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save_grps = !save_grps;
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}
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if (ngrps >= 64) {
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fprintf(stderr, "%s: too many groups\n",
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argv[0]);
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exit(1);
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}
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grp[ngrps++] = argv[++i];
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break;
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case 'm': /* save/delete material */
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if (save_mats != (argv[i][0] == '+')) {
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if (nmats) {
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fprintf(stderr,
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"%s: -m and +m are mutually exclusive\n",
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argv[0]);
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exit(1);
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}
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save_mats = !save_mats;
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}
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if (nmats >= 64) {
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fprintf(stderr, "%s: too many materials\n",
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argv[0]);
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exit(1);
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}
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mat[nmats++] = argv[++i];
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break;
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case 't': /* do texture coord's */
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do_tex = (argv[i][0] == '+') ? 1 : -1;
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break;
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case 'n': /* do normals */
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do_norm = (argv[i][0] == '+') ? 1 : -1;
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break;
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case 'c': /* coalesce vertices */
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verteps = atof(argv[++i]);
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break;
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case 'r': /* output to Radiance file? */
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radout = (argv[i][0] == '+');
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break;
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greg |
2.4 |
case 'T': /* triangulate faces? */
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do_triangulate = (argv[i][0] == '+');
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break;
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greg |
2.2 |
case 'x': /* apply a transform */
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if (xfm != NULL) {
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fprintf(stderr, "%s: only one '-x' option allowed\n",
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argv[0]);
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exit(1);
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}
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xfm = argv[++i];
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break;
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greg |
2.1 |
default:
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fprintf(stderr, "%s: unknown option: %s\n",
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argv[0], argv[i]);
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goto userr;
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}
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if (i == argc) {
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if (verbose)
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fputs("Loading scene from standard input...\n",
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stderr);
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myScene = loadOBJ(NULL, NULL);
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} else {
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myScene = newScene();
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for ( ; i < argc; i++) {
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if (verbose)
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fprintf(stderr,
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"Loading scene from \"%s\"...\n",
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argv[i]);
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if (loadOBJ(myScene, argv[i]) == NULL)
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exit(1);
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}
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}
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if (ngrps) {
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if (verbose)
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fputs("Deleting unwanted groups...\n", stderr);
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clearSelection(myScene, 0);
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sprintf(cbuf, "%s the following groups:",
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save_grps ? "Extracting" : "Deleting");
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addComment(myScene, cbuf);
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for (i = 0; i < ngrps; i++) {
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sprintf(cbuf, "\t%s", grp[i]);
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addComment(myScene, cbuf);
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selectGroup(myScene, grp[i], 0);
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}
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if (save_grps)
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n = deleteFaces(myScene, 0, FACE_SELECTED);
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else
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n = deleteFaces(myScene, FACE_SELECTED, 0);
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sprintf(cbuf, "\t(%d faces removed)", n);
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addComment(myScene, cbuf);
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}
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if (nmats) {
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if (verbose)
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fputs("Deleting unwanted materials...\n", stderr);
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clearSelection(myScene, 0);
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sprintf(cbuf, "%s the following materials:",
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save_mats ? "Extracting" : "Deleting");
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addComment(myScene, cbuf);
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for (i = 0; i < nmats; i++) {
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sprintf(cbuf, "\t%s", mat[i]);
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addComment(myScene, cbuf);
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selectMaterial(myScene, mat[i], 0);
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}
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if (save_mats)
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n = deleteFaces(myScene, 0, FACE_SELECTED);
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else
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n = deleteFaces(myScene, FACE_SELECTED, 0);
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sprintf(cbuf, "\t(%d faces removed)", n);
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addComment(myScene, cbuf);
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}
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if (verbose && do_tex < 0)
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fputs("Removing texture coordinates...\n", stderr);
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if (do_tex < 0 && (n = removeTexture(myScene, 0, 0))) {
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sprintf(cbuf, "Removed texture coordinates from %d faces", n);
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addComment(myScene, cbuf);
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}
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if (verbose && do_norm < 0)
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fputs("Removing surface normals...\n", stderr);
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if (do_norm < 0 && (n = removeNormals(myScene, 0, 0))) {
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sprintf(cbuf, "Removed surface normals from %d faces", n);
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addComment(myScene, cbuf);
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}
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if (verbose && verteps >= 0)
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fputs("Coalescing vertices...\n", stderr);
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if (verteps >= 0 && (n = coalesceVertices(myScene, verteps))) {
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sprintf(cbuf, "Coalesced %d vertices with epsilon of %g",
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n, verteps);
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addComment(myScene, cbuf);
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}
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if (verbose)
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fputs("Deleting degenerate faces...\n", stderr);
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n = deleteFaces(myScene, FACE_DEGENERATE, 0);
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if (n) {
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sprintf(cbuf, "Removed %d degenerate faces", n);
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addComment(myScene, cbuf);
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}
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if (verbose)
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fputs("Checking for duplicate faces...\n", stderr);
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if (findDuplicateFaces(myScene))
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n = deleteFaces(myScene, FACE_DUPLICATE, 0);
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if (n) {
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sprintf(cbuf, "Removed %d duplicate faces", n);
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addComment(myScene, cbuf);
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}
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greg |
2.4 |
if (do_triangulate) {
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if (verbose)
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fputs("Making sure all faces are triangles...\n", stderr);
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n = triangulateScene(myScene);
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if (n > 0) {
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sprintf(cbuf, "Added %d faces during triangulation", n);
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addComment(myScene, cbuf);
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}
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}
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greg |
2.2 |
if (xfm != NULL) {
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if (verbose)
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fputs("Applying transform...\n", stderr);
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if (!xfmScene(myScene, xfm)) {
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fprintf(stderr, "%s: transform error\n", argv[0]);
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exit(1);
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}
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| 210 |
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}
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| 211 |
greg |
2.1 |
if (verbose)
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fputs("Writing out scene...\n", stderr);
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| 213 |
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| 214 |
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fputs("# File processed by: ", stdout);
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| 215 |
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printargs(argc, argv, stdout);
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| 216 |
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if (radout)
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| 217 |
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toRadiance(myScene, stdout, 0, 0);
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| 218 |
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else
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toOBJ(myScene, stdout);
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| 220 |
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/* freeScene(myScene); */
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if (verbose)
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| 222 |
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fputs("Done. \n", stderr);
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| 223 |
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return(0);
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| 224 |
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userr:
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| 225 |
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fprintf(stderr, "Usage: %s [options] [input.obj ..]\n", argv[0]);
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| 226 |
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fprintf(stderr, "Available options:\n");
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| 227 |
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fprintf(stderr, "\t+/-r\t\t\t# Radiance scene output on/off\n");
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| 228 |
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fprintf(stderr, "\t+/-v\t\t\t# on/off verbosity (progress reports)\n");
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| 229 |
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fprintf(stderr, "\t+/-g name\t\t# save/delete group\n");
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| 230 |
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fprintf(stderr, "\t+/-m name\t\t# save/delete faces with material\n");
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| 231 |
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fprintf(stderr, "\t+/-t\t\t\t# keep/remove texture coordinates\n");
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| 232 |
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fprintf(stderr, "\t+/-n\t\t\t# keep/remove vertex normals\n");
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| 233 |
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fprintf(stderr, "\t-c epsilon\t\t# coalesce vertices within epsilon\n");
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| 234 |
greg |
2.4 |
fprintf(stderr, "\t+T\t\t\t# turn all faces into triangles\n");
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| 235 |
greg |
2.2 |
fprintf(stderr, "\t-x 'xf spec'\t# apply the quoted transform\n");
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| 236 |
greg |
2.1 |
return(1);
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| 237 |
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}
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| 238 |
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| 239 |
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void
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| 240 |
greg |
2.5 |
eputs(const char *s) /* put string to stderr */
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| 241 |
greg |
2.1 |
{
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| 242 |
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static int midline = 0;
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| 243 |
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| 244 |
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if (!*s)
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| 245 |
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return;
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| 246 |
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if (!midline++) {
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| 247 |
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fputs(progname, stderr);
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| 248 |
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fputs(": ", stderr);
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| 249 |
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}
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| 250 |
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fputs(s, stderr);
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| 251 |
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if (s[strlen(s)-1] == '\n')
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| 252 |
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midline = 0;
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| 253 |
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}
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