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#ifndef lint |
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static const char RCSid[] = "$Id: robjutil.c,v 2.5 2023/02/09 21:54:10 greg Exp $"; |
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#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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|
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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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|
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const char *progname; |
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int verbose = 0; |
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|
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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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int do_triangulate = 0; |
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char *xfm = NULL; |
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char cbuf[256]; |
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double verteps = -1.; |
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int i, n; |
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|
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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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case 'T': /* triangulate faces? */ |
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do_triangulate = (argv[i][0] == '+'); |
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break; |
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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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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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} |
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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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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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} |
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if (verbose) |
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fputs("Writing out scene...\n", stderr); |
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|
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fputs("# File processed by: ", stdout); |
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printargs(argc, argv, stdout); |
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if (radout) |
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toRadiance(myScene, stdout, 0, 0); |
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else |
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toOBJ(myScene, stdout); |
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/* freeScene(myScene); */ |
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if (verbose) |
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fputs("Done. \n", stderr); |
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return(0); |
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userr: |
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fprintf(stderr, "Usage: %s [options] [input.obj ..]\n", argv[0]); |
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fprintf(stderr, "Available options:\n"); |
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fprintf(stderr, "\t+/-r\t\t\t# Radiance scene output on/off\n"); |
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fprintf(stderr, "\t+/-v\t\t\t# on/off verbosity (progress reports)\n"); |
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fprintf(stderr, "\t+/-g name\t\t# save/delete group\n"); |
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fprintf(stderr, "\t+/-m name\t\t# save/delete faces with material\n"); |
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fprintf(stderr, "\t+/-t\t\t\t# keep/remove texture coordinates\n"); |
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fprintf(stderr, "\t+/-n\t\t\t# keep/remove vertex normals\n"); |
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fprintf(stderr, "\t-c epsilon\t\t# coalesce vertices within epsilon\n"); |
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fprintf(stderr, "\t+T\t\t\t# turn all faces into triangles\n"); |
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fprintf(stderr, "\t-x 'xf spec'\t# apply the quoted transform\n"); |
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return(1); |
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} |
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|
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void |
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eputs(const char *s) /* put string to stderr */ |
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{ |
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static int midline = 0; |
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|
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if (!*s) |
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return; |
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if (!midline++) { |
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fputs(progname, stderr); |
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fputs(": ", stderr); |
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} |
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fputs(s, stderr); |
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if (s[strlen(s)-1] == '\n') |
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midline = 0; |
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} |
