src/common/rglfile.c

#ifndef lint
static const char       RCSid[] = "$Id: rglfile.c,v 3.10 2003/11/14 17:22:06 schorsch Exp $";
#endif
/*
 * Load Radiance object(s) and create OpenGL display lists
 */

#include "copyright.h"

#include <ctype.h>

#include "rtprocess.h"
#include "radogl.h"

#ifndef NLIST2ALLOC
#define NLIST2ALLOC     16              /* batch of display lists to get */
#endif

FUN  ofun[NUMOTYPE] = INIT_OTYPE;

static int      nextlist, nlistleft = 0;


void
initotypes(void)                        /* initialize ofun array */
{
        if (ofun[OBJ_SPHERE].funp == o_sphere)
                return;                 /* already done */
                                                /* assign surface types */
        ofun[OBJ_SPHERE].funp =
        ofun[OBJ_BUBBLE].funp = o_sphere;
        ofun[OBJ_FACE].funp = o_face;
        ofun[OBJ_CONE].funp =
        ofun[OBJ_CUP].funp =
        ofun[OBJ_CYLINDER].funp =
        ofun[OBJ_TUBE].funp = o_cone;
        ofun[OBJ_RING].funp = o_ring;
        ofun[OBJ_SOURCE].funp = o_source;
        ofun[OBJ_INSTANCE].funp = o_instance;
        ofun[OBJ_MESH].funp = o_unsupported;
                                                /* assign material types */
        ofun[MAT_TRANS].funp =
        ofun[MAT_PLASTIC].funp =
        ofun[MAT_METAL].funp = m_normal;
        ofun[MAT_GLASS].funp =
        ofun[MAT_DIELECTRIC].funp =
        ofun[MAT_INTERFACE].funp = m_glass;
        ofun[MAT_PLASTIC2].funp =
        ofun[MAT_METAL2].funp =
        ofun[MAT_TRANS2].funp = m_aniso;
        ofun[MAT_TDATA].funp =
        ofun[MAT_PDATA].funp =
        ofun[MAT_MDATA].funp =
        ofun[MAT_TFUNC].funp =
        ofun[MAT_PFUNC].funp =
        ofun[MAT_MFUNC].funp = m_brdf;
        ofun[MAT_BRTDF].funp = m_brdf2;
        ofun[MAT_GLOW].funp =
        ofun[MAT_LIGHT].funp =
        ofun[MAT_SPOT].funp =
        ofun[MAT_ILLUM].funp = m_light;
        ofun[MAT_MIRROR].funp = m_mirror;
        ofun[MAT_DIRECT1].funp =
        ofun[MAT_DIRECT2].funp = m_prism;
}


int
newglist()                      /* allocate an OGL list id */
{
        if (!nlistleft--) {
                nextlist = glGenLists(NLIST2ALLOC);
                if (!nextlist)
                        error(SYSTEM, "no list space left in newglist");
                nlistleft = NLIST2ALLOC-1;
        }
        return(nextlist++);
}


void
rgl_checkerr(where)             /* check for GL or GLU error */
char    *where;
{
        register GLenum errcode;

        while ((errcode = glGetError()) != GL_NO_ERROR) {
                sprintf(errmsg, "OpenGL error %s: %s",
                                where, gluErrorString(errcode));
                error(WARNING, errmsg);
        }
}


int
rgl_filelist(ic, inp, nl)       /* load scene files into display list */
int     ic;
char    **inp;
int     *nl;                    /* returned number of lists (optional) */
{
        int     listid;

        initotypes();           /* prepare */
        listid = newglist();
        glNewList(listid, GL_COMPILE);
        lightinit();            /* start light source list */
        while (ic--)            /* load each file */
                rgl_load(*inp++);
        surfclean();            /* clean up first pass */
        lightclean();           /* clean up light sources also */
        glEndList();            /* end of top display list */
        lightdefs();            /* define light sources */
        loadoctrees();          /* load octrees (sublists) for instances */
        if (nl != NULL)         /* return total number of lists allocated */
                *nl = nextlist - listid;
        return(listid);         /* all done -- return list id */
}


int
rgl_octlist(fname, cent, radp, nl)      /* load scen into display list */
char    *fname;
FVECT   cent;                   /* returned octree center (optional) */
RREAL   *radp;                  /* returned octree size (optional) */
int     *nl;                    /* returned number of lists (optional) */
{
        double  r;
        int     listid;
                                /* modeled after rgl_filelist() */
        initotypes();
                                /* check the octree and get its size */
        r = checkoct(fname, cent);
        if (radp != NULL) *radp = r;
                                /* start the display list */
        listid = newglist();
        glNewList(listid, GL_COMPILE);
        lightinit();            /* start light source list */
        loadoct(fname);         /* load octree objects into display list */
        surfclean();            /* clean up and close top list */
        lightclean();           /* clean up light sources also */
        glEndList();            /* close top list */
        lightdefs();            /* define light sources */
        loadoctrees();          /* load referenced octrees into sublists */
        if (nl != NULL)         /* return total number of lists allocated */
                *nl = nextlist - listid;
        return(listid);
}


void
rgl_load(inpspec)               /* convert scene description into OGL calls */
char    *inpspec;
{
        char    *fgetline();
        FILE    *infp;
        char    buf[1024];
        register int    c;

        if (inpspec == NULL) {
                infp = stdin;
                inpspec = "standard input";
        } else if (inpspec[0] == '!') {
                if ((infp = popen(inpspec+1, "r")) == NULL) {
                        sprintf(errmsg, "cannot execute \"%s\"", inpspec);
                        error(SYSTEM, errmsg);
                }
        } else if ((infp = fopen(inpspec, "r")) == NULL) {
                sprintf(errmsg, "cannot open scene file \"%s\"", inpspec);
                error(SYSTEM, errmsg);
        }
        while ((c = getc(infp)) != EOF) {
                if (isspace(c))
                        continue;
                if (c == '#') {                         /* comment */
                        fgets(buf, sizeof(buf), infp);
                } else if (c == '!') {                  /* command */
                        ungetc(c, infp);
                        fgetline(buf, sizeof(buf), infp);
                        rgl_load(buf);
                } else {                                /* object */
                        ungetc(c, infp);
                        rgl_object(inpspec, infp);
                }
        }
        if (inpspec[0] == '!')
                pclose(infp);
        else
                fclose(infp);
}


void
rgl_object(name, fp)                    /* read the next object */
char  *name;
FILE  *fp;
{
        static OBJREC   ob;
        char  sbuf[MAXSTR];
        int  rval;
                                        /* get modifier */
        strcpy(sbuf, "EOF");
        fgetword(sbuf, MAXSTR, fp);
        ob.omod = 0;                    /* use ob.os for pointer to material */
        if (!strcmp(sbuf, VOIDID) || !strcmp(sbuf, ALIASMOD))
                ob.os = NULL;
        else
                ob.os = (char *)getmatp(sbuf);
                                        /* get type */
        strcpy(sbuf, "EOF");
        fgetword(sbuf, MAXSTR, fp);
        if ((ob.otype = otype(sbuf)) < 0) {
                sprintf(errmsg, "(%s): unknown type \"%s\"", name, sbuf);
                error(USER, errmsg);
        }
                                        /* get identifier */
        sbuf[0] = '\0';
        fgetword(sbuf, MAXSTR, fp);
        ob.oname = sbuf;
                                        /* get arguments */
        if (ob.otype == MOD_ALIAS) {
                char  sbuf2[MAXSTR];            /* get alias */
                strcpy(sbuf2, "EOF");
                fgetword(sbuf2, MAXSTR, fp);
                if (ob.os == NULL)
                        ob.os = (char *)getmatp(sbuf2);
                o_default(&ob);                 /* fake reference */
                return;
        }
        if ((rval = readfargs(&ob.oargs, fp)) == 0) {
                sprintf(errmsg, "(%s): bad arguments", name);
                objerror(&ob, USER, errmsg);
        } else if (rval < 0) {
                sprintf(errmsg, "(%s): error reading scene", name);
                error(SYSTEM, errmsg);
        }
                                        /* execute */
        (*ofun[ob.otype].funp)(&ob);
                                        /* free arguments */
        freefargs(&ob.oargs);
}
Revision:	3.11
Committed:	Sun Mar 28 20:33:12 2004 UTC (21 years, 7 months ago) by schorsch
Content type:	text/plain
Branch:	MAIN
CVS Tags:	rad5R2, rad5R0, rad5R1, rad4R2, rad3R7P2, rad3R7P1, rad4R1, rad4R0, rad3R6, rad3R6P1, rad3R8, rad3R9, rad4R2P1, rad4R2P2
Changes since 3.10:	+3 -3 lines
Log Message:	Continued ANSIfication, and other fixes and clarifications.
#	User	Rev	Content
1	gwlarson	3.1	#ifndef lint
2	schorsch	3.11	static const char RCSid[] = "$Id: rglfile.c,v 3.10 2003/11/14 17:22:06 schorsch Exp $";
3	gwlarson	3.1	#endif
4			/*
5			* Load Radiance object(s) and create OpenGL display lists
6			*/
7
8	greg	3.5	#include "copyright.h"
9	schorsch	3.10
10			#include <ctype.h>
11	greg	3.4
12	schorsch	3.9	#include "rtprocess.h"
13	gwlarson	3.1	#include "radogl.h"
14
15			#ifndef NLIST2ALLOC
16			#define NLIST2ALLOC 16 /* batch of display lists to get */
17			#endif
18
19			FUN ofun[NUMOTYPE] = INIT_OTYPE;
20
21	gwlarson	3.3	static int nextlist, nlistleft = 0;
22	gwlarson	3.1
23	gwlarson	3.3
24	schorsch	3.11	void
25			initotypes(void) /* initialize ofun array */
26	gwlarson	3.1	{
27			if (ofun[OBJ_SPHERE].funp == o_sphere)
28			return; /* already done */
29			/* assign surface types */
30			ofun[OBJ_SPHERE].funp =
31			ofun[OBJ_BUBBLE].funp = o_sphere;
32			ofun[OBJ_FACE].funp = o_face;
33			ofun[OBJ_CONE].funp =
34			ofun[OBJ_CUP].funp =
35			ofun[OBJ_CYLINDER].funp =
36			ofun[OBJ_TUBE].funp = o_cone;
37			ofun[OBJ_RING].funp = o_ring;
38			ofun[OBJ_SOURCE].funp = o_source;
39			ofun[OBJ_INSTANCE].funp = o_instance;
40	greg	3.7	ofun[OBJ_MESH].funp = o_unsupported;
41	gwlarson	3.1	/* assign material types */
42			ofun[MAT_TRANS].funp =
43			ofun[MAT_PLASTIC].funp =
44			ofun[MAT_METAL].funp = m_normal;
45			ofun[MAT_GLASS].funp =
46			ofun[MAT_DIELECTRIC].funp =
47			ofun[MAT_INTERFACE].funp = m_glass;
48			ofun[MAT_PLASTIC2].funp =
49			ofun[MAT_METAL2].funp =
50			ofun[MAT_TRANS2].funp = m_aniso;
51			ofun[MAT_TDATA].funp =
52			ofun[MAT_PDATA].funp =
53			ofun[MAT_MDATA].funp =
54			ofun[MAT_TFUNC].funp =
55			ofun[MAT_PFUNC].funp =
56			ofun[MAT_MFUNC].funp = m_brdf;
57			ofun[MAT_BRTDF].funp = m_brdf2;
58			ofun[MAT_GLOW].funp =
59			ofun[MAT_LIGHT].funp =
60			ofun[MAT_SPOT].funp =
61			ofun[MAT_ILLUM].funp = m_light;
62			ofun[MAT_MIRROR].funp = m_mirror;
63			ofun[MAT_DIRECT1].funp =
64			ofun[MAT_DIRECT2].funp = m_prism;
65			}
66
67
68			int
69			newglist() /* allocate an OGL list id */
70			{
71	gwlarson	3.3	if (!nlistleft--) {
72	gwlarson	3.1	nextlist = glGenLists(NLIST2ALLOC);
73	gwlarson	3.3	if (!nextlist)
74			error(SYSTEM, "no list space left in newglist");
75			nlistleft = NLIST2ALLOC-1;
76	gwlarson	3.1	}
77			return(nextlist++);
78			}
79
80
81	greg	3.4	void
82	gwlarson	3.1	rgl_checkerr(where) /* check for GL or GLU error */
83			char *where;
84			{
85			register GLenum errcode;
86
87			while ((errcode = glGetError()) != GL_NO_ERROR) {
88			sprintf(errmsg, "OpenGL error %s: %s",
89			where, gluErrorString(errcode));
90			error(WARNING, errmsg);
91			}
92			}
93
94
95			int
96	gwlarson	3.3	rgl_filelist(ic, inp, nl) /* load scene files into display list */
97	gwlarson	3.1	int ic;
98			char **inp;
99	gwlarson	3.3	int nl; / returned number of lists (optional) */
100	gwlarson	3.1	{
101			int listid;
102
103			initotypes(); /* prepare */
104			listid = newglist();
105			glNewList(listid, GL_COMPILE);
106			lightinit(); /* start light source list */
107			while (ic--) /* load each file */
108			rgl_load(*inp++);
109			surfclean(); /* clean up first pass */
110			lightclean(); /* clean up light sources also */
111			glEndList(); /* end of top display list */
112			lightdefs(); /* define light sources */
113			loadoctrees(); /* load octrees (sublists) for instances */
114	gwlarson	3.3	if (nl != NULL) /* return total number of lists allocated */
115			*nl = nextlist - listid;
116	gwlarson	3.1	return(listid); /* all done -- return list id */
117			}
118
119
120			int
121	gwlarson	3.3	rgl_octlist(fname, cent, radp, nl) /* load scen into display list */
122	gwlarson	3.1	char *fname;
123			FVECT cent; /* returned octree center (optional) */
124	schorsch	3.8	RREAL radp; / returned octree size (optional) */
125	gwlarson	3.3	int nl; / returned number of lists (optional) */
126	gwlarson	3.1	{
127			double r;
128			int listid;
129			/* modeled after rgl_filelist() */
130			initotypes();
131			/* check the octree and get its size */
132			r = checkoct(fname, cent);
133			if (radp != NULL) *radp = r;
134			/* start the display list */
135			listid = newglist();
136			glNewList(listid, GL_COMPILE);
137			lightinit(); /* start light source list */
138			loadoct(fname); /* load octree objects into display list */
139			surfclean(); /* clean up and close top list */
140			lightclean(); /* clean up light sources also */
141			glEndList(); /* close top list */
142			lightdefs(); /* define light sources */
143			loadoctrees(); /* load referenced octrees into sublists */
144	gwlarson	3.3	if (nl != NULL) /* return total number of lists allocated */
145			*nl = nextlist - listid;
146	gwlarson	3.1	return(listid);
147			}
148
149
150	greg	3.4	void
151	gwlarson	3.1	rgl_load(inpspec) /* convert scene description into OGL calls */
152			char *inpspec;
153			{
154			char *fgetline();
155			FILE *infp;
156			char buf[1024];
157			register int c;
158
159			if (inpspec == NULL) {
160			infp = stdin;
161			inpspec = "standard input";
162			} else if (inpspec[0] == '!') {
163			if ((infp = popen(inpspec+1, "r")) == NULL) {
164			sprintf(errmsg, "cannot execute \"%s\"", inpspec);
165			error(SYSTEM, errmsg);
166			}
167			} else if ((infp = fopen(inpspec, "r")) == NULL) {
168			sprintf(errmsg, "cannot open scene file \"%s\"", inpspec);
169			error(SYSTEM, errmsg);
170			}
171			while ((c = getc(infp)) != EOF) {
172			if (isspace(c))
173			continue;
174			if (c == '#') { /* comment */
175			fgets(buf, sizeof(buf), infp);
176			} else if (c == '!') { /* command */
177			ungetc(c, infp);
178			fgetline(buf, sizeof(buf), infp);
179			rgl_load(buf);
180			} else { /* object */
181			ungetc(c, infp);
182			rgl_object(inpspec, infp);
183			}
184			}
185			if (inpspec[0] == '!')
186			pclose(infp);
187			else
188			fclose(infp);
189			}
190
191
192	greg	3.4	void
193	gwlarson	3.1	rgl_object(name, fp) /* read the next object */
194			char *name;
195			FILE *fp;
196			{
197			static OBJREC ob;
198			char sbuf[MAXSTR];
199			int rval;
200			/* get modifier */
201			strcpy(sbuf, "EOF");
202			fgetword(sbuf, MAXSTR, fp);
203			ob.omod = 0; /* use ob.os for pointer to material */
204	greg	3.6	if (!strcmp(sbuf, VOIDID) \|\| !strcmp(sbuf, ALIASMOD))
205	gwlarson	3.1	ob.os = NULL;
206			else
207			ob.os = (char *)getmatp(sbuf);
208			/* get type */
209			strcpy(sbuf, "EOF");
210			fgetword(sbuf, MAXSTR, fp);
211	greg	3.6	if ((ob.otype = otype(sbuf)) < 0) {
212	gwlarson	3.1	sprintf(errmsg, "(%s): unknown type \"%s\"", name, sbuf);
213			error(USER, errmsg);
214			}
215			/* get identifier */
216			sbuf[0] = '\0';
217			fgetword(sbuf, MAXSTR, fp);
218			ob.oname = sbuf;
219			/* get arguments */
220	greg	3.6	if (ob.otype == MOD_ALIAS) {
221	gwlarson	3.1	char sbuf2[MAXSTR]; /* get alias */
222			strcpy(sbuf2, "EOF");
223			fgetword(sbuf2, MAXSTR, fp);
224			if (ob.os == NULL)
225			ob.os = (char *)getmatp(sbuf2);
226			o_default(&ob); /* fake reference */
227			return;
228			}
229			if ((rval = readfargs(&ob.oargs, fp)) == 0) {
230			sprintf(errmsg, "(%s): bad arguments", name);
231			objerror(&ob, USER, errmsg);
232			} else if (rval < 0) {
233			sprintf(errmsg, "(%s): error reading scene", name);
234			error(SYSTEM, errmsg);
235			}
236			/* execute */
237			(*ofun[ob.otype].funp)(&ob);
238			/* free arguments */
239			freefargs(&ob.oargs);
240			}