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/* Copyright (c) 1998 Silicon Graphics, Inc. */ |
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#ifndef lint |
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static char SCCSid[] = "$SunId$ SGI"; |
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static const char RCSid[] = "$Id$"; |
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#endif |
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/* |
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* Routines for reading instances and converting to OpenGL. |
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*/ |
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#include "copyright.h" |
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#include <stdio.h> |
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#include <string.h> |
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#include <time.h> |
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#include "platform.h" |
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#include "paths.h" |
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#include "resolu.h" |
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#include "radogl.h" |
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#include "octree.h" |
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char octfile[256]; /* octree file path */ |
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} OCTINST; /* octree to instantiate */ |
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OBJECT nobjects; /* number of objects loaded so far */ |
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static double ogetflt(void); |
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static long ogetint(int); |
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static char *ogetstr(char *); |
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static int loadobj(void); |
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static void skiptree(void); |
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static void octerror(int etyp, char *msg); |
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static OCTINST *getoct(char *); |
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extern int free(); |
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static double ogetflt(); |
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static long ogetint(); |
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static char *ogetstr(); |
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static int loadobj(), octerror(), skiptree(); |
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static OCTINST *getoct(); |
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static char *infn; /* input file name */ |
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static FILE *infp; /* input file stream */ |
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static int objsize; /* size of stored OBJECT's */ |
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static short otypmap[NUMOTYPE+8]; /* object type map */ |
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static long imhash(mod) char *mod; {return((long)mod);} |
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static unsigned long imhash(mod) char *mod; {return((unsigned long)mod);} |
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static LUTAB imtab = {imhash,NULL,NULL,NULL,0,NULL,0}; |
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static LUTAB ottab = LU_SINIT(free,free); |
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int |
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o_instance(o) /* convert instance to list call */ |
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register OBJREC *o; |
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{ |
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o->oargs.nsargs-1) |
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objerror(o, USER, "bad transform"); |
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glPushAttrib(GL_TRANSFORM_BIT); |
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if (xfs.sca < 1.-FTINY | xfs.sca > 1.+FTINY) |
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if ((xfs.sca < 1.-FTINY) | (xfs.sca > 1.+FTINY)) |
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glEnable(GL_NORMALIZE); |
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glMatrixMode(GL_MODELVIEW); |
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glPushMatrix(); |
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} |
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ot = getoct(o->oargs.sarg[0]); /* get octree reference */ |
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if (ot->localmatl &= o->os != NULL) /* set material */ |
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setmaterial(o->os, ot->cent, 0); |
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setmaterial((MATREC *)o->os, ot->cent, 0); |
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/* call the assigned list */ |
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glCallList(ot->listid); |
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glPopAttrib(); |
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} |
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rgl_checkerr("creating instance"); |
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return(0); |
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} |
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while (ottab.tsiz) { |
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if (!levelsleft--) |
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error(USER, "too many octree levels -- instance loop?"); |
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copystruct(&looptab, &ottab); |
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looptab = ottab; |
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ottab.tsiz = 0; |
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nocts += lu_doall(&looptab, buildoctlist); |
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lu_done(&looptab); |
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getoct(name) /* get/assign octree list id */ |
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char *name; |
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{ |
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extern char *getpath(), *getlibpath(); |
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char *path; |
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register LUENT *lp; |
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register OCTINST *op; |
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strcpy(lp->key, name); |
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} |
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if ((op = (OCTINST *)lp->data) == NULL) { |
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path = getpath(name, getlibpath(), R_OK); |
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path = getpath(name, getrlibpath(), R_OK); |
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if (path == NULL) { |
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sprintf(errmsg, "cannot find octree \"%s\"", name); |
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error(USER, errmsg); |
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return(op); |
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memerr: |
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error(SYSTEM, "out of memory in getoct"); |
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return NULL; /* pro forma return */ |
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} |
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sprintf(errmsg, "cannot open octree file \"%s\"", fname); |
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error(SYSTEM, errmsg); |
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} |
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#ifdef MSDOS |
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setmode(fileno(infp), O_BINARY); |
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#endif |
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SET_FILE_BINARY(infp); |
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/* get header */ |
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if (checkheader(infp, OCTFMT, NULL) < 0) |
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octerror(USER, "not an octree"); |
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/* check format */ |
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if ((objsize = ogetint(2)-OCTMAGIC) <= 0 || |
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objsize > MAXOBJSIZ || objsize > sizeof(long)) |
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octerror("incompatible octree format"); |
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octerror(USER, "incompatible octree format"); |
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if (cent != NULL) { /* get boundaries (compute center) */ |
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for (i = 0; i < 3; i++) |
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cent[i] = atof(ogetstr(sbuf)); |
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} |
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int |
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loadoct(fname) /* read in objects from octree */ |
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char *fname; |
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{ |
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infn = fname; |
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infp = fopen(fname, "r"); /* assume already checked */ |
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#ifdef MSDOS |
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setmode(fileno(infp), O_BINARY); |
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#endif |
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SET_FILE_BINARY(infp); |
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/* skip header */ |
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getheader(infp, NULL, NULL); |
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/* get format */ |
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} |
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static |
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static void |
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skiptree() /* skip octree on input */ |
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{ |
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register int i; |
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} |
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static |
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static int |
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loadobj() /* get next object */ |
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{ |
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static OBJREC ob; |
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/* get name id */ |
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ob.oname = ogetstr(idbuf); |
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/* get string arguments */ |
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if (ob.oargs.nsargs = ogetint(2)) { |
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if ((ob.oargs.nsargs = ogetint(2))) { |
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ob.oargs.sarg = (char **)malloc |
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(ob.oargs.nsargs*sizeof(char *)); |
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if (ob.oargs.sarg == NULL) |
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ob.oargs.iarg = NULL; |
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#endif |
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/* get real arguments */ |
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if (ob.oargs.nfargs = ogetint(2)) { |
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ob.oargs.farg = (FLOAT *)malloc |
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(ob.oargs.nfargs*sizeof(FLOAT)); |
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if ((ob.oargs.nfargs = ogetint(2))) { |
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ob.oargs.farg = (RREAL *)malloc |
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(ob.oargs.nfargs*sizeof(RREAL)); |
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if (ob.oargs.farg == NULL) |
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goto memerr; |
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for (i = 0; i < ob.oargs.nfargs; i++) |
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return(nobjects++); /* return object id */ |
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memerr: |
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error(SYSTEM, "out of memory in loadobj"); |
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return OVOID; /* pro forma return */ |
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} |
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static |
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static void |
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octerror(etyp, msg) /* octree error */ |
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int etyp; |
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char *msg; |