src/ot/obj2mesh.c

#ifndef lint
static const char RCSid[] = "$Id: obj2mesh.c,v 2.12 2007/07/12 14:58:53 greg Exp $";
#endif
/*
 *  Main program to compile a Wavefront .OBJ file into a Radiance mesh
 */

#include "copyright.h"
#include "paths.h"
#include "platform.h"
#include "standard.h"
#include "resolu.h"
#include "cvmesh.h"
#include "otypes.h"

extern int      o_face(); /* XXX should go to a header file */

int     o_default() { return(O_MISS); }

FUN  ofun[NUMOTYPE] = INIT_OTYPE;       /* needed for link resolution */

char  *progname;                        /* argv[0] */

int  nowarn = 0;                        /* supress warnings? */

int  objlim = 9;                        /* # of objects before split */

int  resolu = 16384;                    /* octree resolution limit */

double  mincusize;                      /* minimum cube size from resolu */

static void addface(CUBE  *cu, OBJECT   obj);
static void add2full(CUBE  *cu, OBJECT  obj);


int
main(           /* compile a .OBJ file into a mesh */
        int  argc,
        char  *argv[]
)
{
        int  nmatf = 0;
        char  pathnames[12800];
        char  *pns = pathnames;
        char  *matinp[128];
        char  *cp;
        int  i, j;

        progname = argv[0];
        ofun[OBJ_FACE].funp = o_face;

        for (i = 1; i < argc && argv[i][0] == '-'; i++)
                switch (argv[i][1]) {
                case 'n':                               /* set limit */
                        objlim = atoi(argv[++i]);
                        break;
                case 'r':                               /* resolution limit */
                        resolu = atoi(argv[++i]);
                        break;
                case 'a':                               /* material file */
                        matinp[nmatf++] = argv[++i];
                        break;
                case 'l':                               /* library material */
                        cp = getpath(argv[++i], getrlibpath(), R_OK);
                        if (cp == NULL) {
                                sprintf(errmsg,
                                        "cannot find library material: '%s'",
                                                argv[i]);
                                error(USER, errmsg);
                        }
                        matinp[nmatf++] = strcpy(pns, cp);
                        while (*pns++)
                                ;
                        break;
                case 'w':                               /* supress warnings */
                        nowarn = 1;
                        break;
                default:
                        sprintf(errmsg, "unknown option: '%s'", argv[i]);
                        error(USER, errmsg);
                        break;
                }

        if (i < argc-2)
                error(USER, "too many file arguments");
                                        /* initialize mesh */
        cvinit(i==argc-2 ? argv[i+1] : "<stdout>");
                                        /* load material input */
        for (j = 0; j < nmatf; j++)
                readobj(matinp[j]);
                                        /* read .OBJ file into triangles */
        if (i == argc)
                wfreadobj(NULL);
        else
                wfreadobj(argv[i]);
        
        cvmeshbounds();                 /* set octree boundaries */

        if (i == argc-2)                /* open output file */
                if (freopen(argv[i+1], "w", stdout) == NULL)
                        error(SYSTEM, "cannot open output file");
        SET_FILE_BINARY(stdout);
        newheader("RADIANCE", stdout);  /* new binary file header */
        printargs(i<argc ? i+1 : argc, argv, stdout);
        fputformat(MESHFMT, stdout);
        fputc('\n', stdout);

        mincusize = ourmesh->mcube.cusize / resolu - FTINY;

        for (i = 0; i < nobjects; i++)  /* add triangles to octree */
                if (objptr(i)->otype == OBJ_FACE)
                        addface(&ourmesh->mcube, i);

                                        /* optimize octree */
        ourmesh->mcube.cutree = combine(ourmesh->mcube.cutree);

        if (ourmesh->mcube.cutree == EMPTY)
                error(WARNING, "mesh is empty");
        
        cvmesh();                       /* convert mesh and leaf nodes */

        writemesh(ourmesh, stdout);     /* write mesh to output */
        
        /* printmeshstats(ourmesh, stderr); */

        quit(0);
        return 0; /* pro forma return */
}


void
quit(                           /* exit program */
        int  code
)
{
        exit(code);
}


void
cputs(void)                                     /* interactive error */
{
        /* referenced, but not used */
}


void
wputs(                          /* warning message */
        char  *s
)
{
        if (!nowarn)
                eputs(s);
}


void
eputs(                          /* put string to stderr */
        register char  *s
)
{
        static int  inln = 0;

        if (!inln++) {
                fputs(progname, stderr);
                fputs(": ", stderr);
        }
        fputs(s, stderr);
        if (*s && s[strlen(s)-1] == '\n')
                inln = 0;
}


static void
addface(                        /* add a face to a cube */
        register CUBE  *cu,
        OBJECT  obj
)
{

        if (o_face(objptr(obj), cu) == O_MISS)
                return;

        if (istree(cu->cutree)) {
                CUBE  cukid;                    /* do children */
                int  i, j;
                cukid.cusize = cu->cusize * 0.5;
                for (i = 0; i < 8; i++) {
                        cukid.cutree = octkid(cu->cutree, i);
                        for (j = 0; j < 3; j++) {
                                cukid.cuorg[j] = cu->cuorg[j];
                                if ((1<<j) & i)
                                        cukid.cuorg[j] += cukid.cusize;
                        }
                        addface(&cukid, obj);
                        octkid(cu->cutree, i) = cukid.cutree;
                }
                return;
        }
        if (isempty(cu->cutree)) {
                OBJECT  oset[2];                /* singular set */
                oset[0] = 1; oset[1] = obj;
                cu->cutree = fullnode(oset);
                return;
        }
                                        /* add to full node */
        add2full(cu, obj);
}


static void
add2full(                       /* add object to full node */
        register CUBE  *cu,
        OBJECT  obj
)
{
        OCTREE  ot;
        OBJECT  oset[MAXSET+1];
        CUBE  cukid;
        register int  i, j;

        objset(oset, cu->cutree);
        cukid.cusize = cu->cusize * 0.5;

        if (oset[0] < objlim || cukid.cusize <
                        (oset[0] < MAXSET ? mincusize : mincusize/256.0)) {
                                                /* add to set */
                if (oset[0] >= MAXSET) {
                        sprintf(errmsg, "set overflow in addobject (%s)",
                                        objptr(obj)->oname);
                        error(INTERNAL, errmsg);
                }
                insertelem(oset, obj);
                cu->cutree = fullnode(oset);
                return;
        }
                                        /* subdivide cube */
        if ((ot = octalloc()) == EMPTY)
                error(SYSTEM, "out of octree space");
                                        /* assign subcubes */
        for (i = 0; i < 8; i++) {
                cukid.cutree = EMPTY;
                for (j = 0; j < 3; j++) {
                        cukid.cuorg[j] = cu->cuorg[j];
                        if ((1<<j) & i)
                                cukid.cuorg[j] += cukid.cusize;
                }
                for (j = 1; j <= oset[0]; j++)
                        addface(&cukid, oset[j]);
                addface(&cukid, obj);
                                        /* returned node */
                octkid(ot, i) = cukid.cutree;
        }
        cu->cutree = ot;
}
Revision:	2.13
Committed:	Wed Nov 12 03:54:31 2008 UTC (15 years, 5 months ago) by greg
Content type:	text/plain
Branch:	MAIN
CVS Tags:	rad4R2P2, rad5R0, rad4R2, rad4R1, rad4R0, rad4R2P1
Changes since 2.12:	+2 -1 lines
Log Message:	Fixes for Visual Studio compilation
#	User	Rev	Content
1	greg	2.1	#ifndef lint
2	greg	2.13	static const char RCSid[] = "$Id: obj2mesh.c,v 2.12 2007/07/12 14:58:53 greg Exp $";
3	greg	2.1	#endif
4			/*
5			* Main program to compile a Wavefront .OBJ file into a Radiance mesh
6			*/
7
8			#include "copyright.h"
9	greg	2.13	#include "paths.h"
10	schorsch	2.6	#include "platform.h"
11	greg	2.1	#include "standard.h"
12	schorsch	2.8	#include "resolu.h"
13	greg	2.1	#include "cvmesh.h"
14			#include "otypes.h"
15
16	schorsch	2.8	extern int o_face(); /* XXX should go to a header file */
17	greg	2.1
18			int o_default() { return(O_MISS); }
19
20			FUN ofun[NUMOTYPE] = INIT_OTYPE; /* needed for link resolution */
21
22			char progname; / argv[0] */
23
24			int nowarn = 0; /* supress warnings? */
25
26	greg	2.12	int objlim = 9; /* # of objects before split */
27	greg	2.1
28			int resolu = 16384; /* octree resolution limit */
29
30			double mincusize; /* minimum cube size from resolu */
31
32	schorsch	2.8	static void addface(CUBE *cu, OBJECT obj);
33			static void add2full(CUBE *cu, OBJECT obj);
34	greg	2.1
35	schorsch	2.8
36			int
37			main( /* compile a .OBJ file into a mesh */
38			int argc,
39			char *argv[]
40			)
41	greg	2.1	{
42	greg	2.3	int nmatf = 0;
43	greg	2.11	char pathnames[12800];
44			char *pns = pathnames;
45			char *matinp[128];
46			char *cp;
47	greg	2.3	int i, j;
48	greg	2.1
49			progname = argv[0];
50			ofun[OBJ_FACE].funp = o_face;
51
52			for (i = 1; i < argc && argv[i][0] == '-'; i++)
53			switch (argv[i][1]) {
54			case 'n': /* set limit */
55			objlim = atoi(argv[++i]);
56			break;
57			case 'r': /* resolution limit */
58			resolu = atoi(argv[++i]);
59			break;
60	greg	2.3	case 'a': /* material file */
61			matinp[nmatf++] = argv[++i];
62			break;
63	greg	2.11	case 'l': /* library material */
64			cp = getpath(argv[++i], getrlibpath(), R_OK);
65			if (cp == NULL) {
66			sprintf(errmsg,
67			"cannot find library material: '%s'",
68			argv[i]);
69			error(USER, errmsg);
70			}
71			matinp[nmatf++] = strcpy(pns, cp);
72			while (*pns++)
73			;
74			break;
75	greg	2.1	case 'w': /* supress warnings */
76			nowarn = 1;
77			break;
78			default:
79			sprintf(errmsg, "unknown option: '%s'", argv[i]);
80			error(USER, errmsg);
81			break;
82			}
83	greg	2.7
84			if (i < argc-2)
85			error(USER, "too many file arguments");
86	greg	2.1	/* initialize mesh */
87			cvinit(i==argc-2 ? argv[i+1] : "<stdout>");
88	greg	2.3	/* load material input */
89			for (j = 0; j < nmatf; j++)
90			readobj(matinp[j]);
91			/* read .OBJ file into triangles */
92			if (i == argc)
93	greg	2.1	wfreadobj(NULL);
94			else
95			wfreadobj(argv[i]);
96
97			cvmeshbounds(); /* set octree boundaries */
98
99			if (i == argc-2) /* open output file */
100			if (freopen(argv[i+1], "w", stdout) == NULL)
101			error(SYSTEM, "cannot open output file");
102	schorsch	2.5	SET_FILE_BINARY(stdout);
103	greg	2.1	newheader("RADIANCE", stdout); /* new binary file header */
104			printargs(i<argc ? i+1 : argc, argv, stdout);
105			fputformat(MESHFMT, stdout);
106			fputc('\n', stdout);
107
108			mincusize = ourmesh->mcube.cusize / resolu - FTINY;
109
110			for (i = 0; i < nobjects; i++) /* add triangles to octree */
111	greg	2.3	if (objptr(i)->otype == OBJ_FACE)
112			addface(&ourmesh->mcube, i);
113	greg	2.1
114			/* optimize octree */
115			ourmesh->mcube.cutree = combine(ourmesh->mcube.cutree);
116
117			if (ourmesh->mcube.cutree == EMPTY)
118			error(WARNING, "mesh is empty");
119
120			cvmesh(); /* convert mesh and leaf nodes */
121
122			writemesh(ourmesh, stdout); /* write mesh to output */
123
124	greg	2.4	/* printmeshstats(ourmesh, stderr); */
125	greg	2.1
126			quit(0);
127	schorsch	2.8	return 0; /* pro forma return */
128	greg	2.1	}
129
130
131			void
132	schorsch	2.8	quit( /* exit program */
133			int code
134			)
135	greg	2.1	{
136			exit(code);
137			}
138
139
140			void
141	schorsch	2.8	cputs(void) /* interactive error */
142	greg	2.1	{
143			/* referenced, but not used */
144			}
145
146
147			void
148	schorsch	2.8	wputs( /* warning message */
149			char *s
150			)
151	greg	2.1	{
152			if (!nowarn)
153			eputs(s);
154			}
155
156
157			void
158	schorsch	2.8	eputs( /* put string to stderr */
159			register char *s
160			)
161	greg	2.1	{
162			static int inln = 0;
163
164			if (!inln++) {
165			fputs(progname, stderr);
166			fputs(": ", stderr);
167			}
168			fputs(s, stderr);
169			if (*s && s[strlen(s)-1] == '\n')
170			inln = 0;
171			}
172
173
174	schorsch	2.8	static void
175			addface( /* add a face to a cube */
176			register CUBE *cu,
177			OBJECT obj
178			)
179	greg	2.1	{
180
181			if (o_face(objptr(obj), cu) == O_MISS)
182			return;
183
184			if (istree(cu->cutree)) {
185	greg	2.2	CUBE cukid; /* do children */
186			int i, j;
187	greg	2.1	cukid.cusize = cu->cusize * 0.5;
188			for (i = 0; i < 8; i++) {
189			cukid.cutree = octkid(cu->cutree, i);
190			for (j = 0; j < 3; j++) {
191			cukid.cuorg[j] = cu->cuorg[j];
192			if ((1<<j) & i)
193			cukid.cuorg[j] += cukid.cusize;
194			}
195			addface(&cukid, obj);
196			octkid(cu->cutree, i) = cukid.cutree;
197			}
198			return;
199			}
200			if (isempty(cu->cutree)) {
201	greg	2.2	OBJECT oset[2]; /* singular set */
202	greg	2.1	oset[0] = 1; oset[1] = obj;
203			cu->cutree = fullnode(oset);
204			return;
205			}
206			/* add to full node */
207	greg	2.2	add2full(cu, obj);
208			}
209
210
211	schorsch	2.8	static void
212			add2full( /* add object to full node */
213			register CUBE *cu,
214			OBJECT obj
215			)
216	greg	2.2	{
217			OCTREE ot;
218			OBJECT oset[MAXSET+1];
219			CUBE cukid;
220			register int i, j;
221
222	greg	2.1	objset(oset, cu->cutree);
223			cukid.cusize = cu->cusize * 0.5;
224
225	greg	2.10	if (oset[0] < objlim \|\| cukid.cusize <
226	greg	2.9	(oset[0] < MAXSET ? mincusize : mincusize/256.0)) {
227	greg	2.1	/* add to set */
228			if (oset[0] >= MAXSET) {
229	greg	2.2	sprintf(errmsg, "set overflow in addobject (%s)",
230	greg	2.1	objptr(obj)->oname);
231			error(INTERNAL, errmsg);
232			}
233			insertelem(oset, obj);
234			cu->cutree = fullnode(oset);
235			return;
236			}
237			/* subdivide cube */
238			if ((ot = octalloc()) == EMPTY)
239			error(SYSTEM, "out of octree space");
240			/* assign subcubes */
241			for (i = 0; i < 8; i++) {
242			cukid.cutree = EMPTY;
243			for (j = 0; j < 3; j++) {
244			cukid.cuorg[j] = cu->cuorg[j];
245			if ((1<<j) & i)
246			cukid.cuorg[j] += cukid.cusize;
247			}
248			for (j = 1; j <= oset[0]; j++)
249			addface(&cukid, oset[j]);
250			addface(&cukid, obj);
251			/* returned node */
252			octkid(ot, i) = cukid.cutree;
253			}
254			cu->cutree = ot;
255			}