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gwlarson |
3.1 |
/* 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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#endif |
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/* |
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* Routines for loading and displaying Radiance objects under OpenGL in rholo. |
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*/ |
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#include "radogl.h" |
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#include "tonemap.h" |
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#include "rhdisp.h" |
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#include "rhdriver.h" |
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#include "rhdobj.h" |
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extern FILE *sstdout; /* user standard output */ |
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char rhdcmd[DO_NCMDS][8] = DO_INIT; /* user command list */ |
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int (*dobj_lightsamp)() = NULL; /* pointer to function to get lights */ |
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#define AVGREFL 0.5 /* assumed average reflectance */ |
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#define MAXAC 64 /* maximum number of args */ |
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#ifndef MINTHRESH |
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#define MINTHRESH 7.0 /* source threshold w.r.t. mean */ |
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#endif |
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#ifndef NALT |
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#define NALT 11 /* # sampling altitude angles */ |
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#endif |
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#ifndef NAZI |
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#define NAZI ((int)(PI/2.*NALT+.5)) |
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#endif |
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typedef struct dlights { |
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struct dlights *next; /* next in lighting set list */ |
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FVECT lcent; /* computed lighting center */ |
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double ravg; /* harmonic mean free range radius */ |
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TMbright larb; /* average reflected brightness */ |
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COLOR lamb; /* local ambient value */ |
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short nl; /* number of lights in this set */ |
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struct lsource { |
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FVECT direc; /* source direction */ |
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double omega; /* source solid angle */ |
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COLOR val; /* source color */ |
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} li[MAXLIGHTS]; /* light sources */ |
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} DLIGHTS; /* a light source set */ |
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typedef struct dobject { |
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struct dobject *next; /* next object in list */ |
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char name[64]; /* object name */ |
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FVECT center; /* orig. object center */ |
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FLOAT radius; /* orig. object radius */ |
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int listid; /* GL display list identifier */ |
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int rtp[3]; /* associated rtrace process */ |
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DLIGHTS *ol; /* object lights */ |
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FULLXF xfb; /* coordinate transform */ |
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short drawcode; /* drawing code */ |
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short xfac; /* transform argument count */ |
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char *xfav[MAXAC+1]; /* transform args */ |
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} DOBJECT; /* a displayable object */ |
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static DLIGHTS *dlightsets; /* lighting sets */ |
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static DOBJECT *dobjects; /* display object list */ |
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static DOBJECT *curobj; /* current (last referred) object */ |
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static int lastxfac; /* last number of transform args */ |
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static char *lastxfav[MAXAC+1]; /* saved transform arguments */ |
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#define RTARGC 8 |
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static char *rtargv[RTARGC+1] = {"rtrace", "-h-", "-w-", "-fdd", |
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"-x", "1", "-oL"}; |
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static struct { |
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int nsamp; /* number of ray samples */ |
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COLOR val; /* value (sum) */ |
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} ssamp[NALT][NAZI]; /* current sphere samples */ |
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#define curname (curobj==NULL ? (char *)NULL : curobj->name) |
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static DOBJECT * |
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getdobj(nm) /* get object from list by name */ |
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char *nm; |
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{ |
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register DOBJECT *op; |
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if (nm == NULL) |
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return(NULL); |
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if (nm == curname) |
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return(curobj); |
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for (op = dobjects; op != NULL; op = op->next) |
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if (!strcmp(op->name, nm)) |
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break; |
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return(op); |
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} |
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static |
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freedobj(op) /* free resources and memory assoc. with op */ |
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register DOBJECT *op; |
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{ |
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int foundlink = 0; |
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DOBJECT ohead; |
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register DOBJECT *opl; |
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if (op == NULL) |
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return(0); |
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ohead.next = dobjects; |
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for (opl = &ohead; opl->next != NULL; opl = opl->next) { |
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if (opl->next == op && (opl->next = op->next) == NULL) |
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break; |
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foundlink += opl->next->listid == op->listid; |
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} |
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dobjects = ohead.next; |
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if (!foundlink) { |
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glDeleteLists(op->listid, 1); |
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close_process(op->rtp); |
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} |
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while (op->xfac) |
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freestr(op->xfav[--op->xfac]); |
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free((char *)op); |
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return(1); |
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} |
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static |
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savedxf(op) /* save transform for display object */ |
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register DOBJECT *op; |
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{ |
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/* free old */ |
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while (lastxfac) |
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freestr(lastxfav[--lastxfac]); |
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/* nothing to save? */ |
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if (op == NULL) { |
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lastxfav[0] = NULL; |
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return(0); |
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} |
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/* else save new */ |
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for (lastxfac = 0; lastxfac < op->xfac; lastxfac++) |
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lastxfav[lastxfac] = savestr(op->xfav[lastxfac]); |
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lastxfav[lastxfac] = NULL; |
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return(1); |
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} |
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static |
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ssph_sample(clr, direc, pos) /* add sample to current source sphere */ |
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COLR clr; |
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FVECT direc, pos; |
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{ |
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COLOR col; |
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double d; |
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register int alt, azi; |
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if (dlightsets == NULL) |
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return; |
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if (pos == NULL) |
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d = FHUGE; /* sample is at infinity */ |
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else if ((d = (pos[0] - dlightsets->lcent[0])*direc[0] + |
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(pos[1] - dlightsets->lcent[1])*direc[1] + |
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(pos[2] - dlightsets->lcent[2])*direc[2]) > FTINY) |
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dlightsets->ravg += 1./d; |
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else |
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return; /* sample is behind us */ |
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alt = NALT*(1.-FTINY)*(.5*(1.+FTINY) + direc[2]*.5); |
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azi = NAZI*(1.-FTINY)*(.5*(1.+FTINY) + .5/PI*atan2(direc[1],direc[0])); |
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colr_color(col, clr); |
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addcolor(ssamp[alt][azi].val, col); |
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ssamp[alt][azi].nsamp++; |
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} |
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static |
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ssph_direc(direc, alt, azi) /* compute sphere sampling direction */ |
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FVECT direc; |
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int alt, azi; |
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{ |
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double phi, d; |
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direc[2] = 2./NALT*(alt+.5) - 1.; |
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d = sqrt(1. - direc[2]*direc[2]); |
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phi = 2.*PI/NAZI*(azi+.5) - PI; |
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direc[0] = d*cos(phi); |
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direc[1] = d*sin(phi); |
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} |
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static int |
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ssph_neigh(sp, next) /* neighbor counter on sphere */ |
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register int sp[2]; |
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int next; |
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{ |
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static short nneigh = 0; /* neighbor count */ |
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static short neighlist[NAZI+6][2]; /* neighbor list (0 is home) */ |
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register int i; |
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if (next) { |
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if (nneigh <= 0) |
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return(0); |
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sp[0] = neighlist[--nneigh][0]; |
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sp[1] = neighlist[nneigh][1]; |
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return(1); |
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} |
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if (sp[0] < 0 | sp[0] >= NALT | sp[1] < 0 | sp[1] >= NAZI) |
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return(nneigh=0); |
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neighlist[0][0] = sp[0]; neighlist[0][1] = sp[1]; |
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nneigh = 1; |
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if (sp[0] == 0) { |
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neighlist[nneigh][0] = 1; |
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neighlist[nneigh++][1] = (sp[1]+1)%NAZI; |
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neighlist[nneigh][0] = 1; |
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neighlist[nneigh++][1] = sp[1]; |
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neighlist[nneigh][0] = 1; |
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neighlist[nneigh++][1] = (sp[1]+(NAZI-1))%NAZI; |
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for (i = 0; i < NAZI; i++) |
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if (i != sp[1]) { |
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neighlist[nneigh][0] = 0; |
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neighlist[nneigh++][1] = i; |
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} |
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} else if (sp[0] == NALT-1) { |
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neighlist[nneigh][0] = NALT-2; |
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neighlist[nneigh++][1] = (sp[1]+1)%NAZI; |
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neighlist[nneigh][0] = NALT-2; |
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neighlist[nneigh++][1] = sp[1]; |
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neighlist[nneigh][0] = NALT-2; |
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neighlist[nneigh++][1] = (sp[1]+(NAZI-1))%NAZI; |
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for (i = 0; i < NAZI; i++) |
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if (i != sp[1]) { |
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neighlist[nneigh][0] = NALT-1; |
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neighlist[nneigh++][1] = i; |
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} |
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} else { |
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neighlist[nneigh][0] = sp[0]-1; |
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neighlist[nneigh++][1] = (sp[1]+1)%NAZI; |
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neighlist[nneigh][0] = sp[0]-1; |
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neighlist[nneigh++][1] = sp[1]; |
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neighlist[nneigh][0] = sp[0]-1; |
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neighlist[nneigh++][1] = (sp[1]+(NAZI-1))%NAZI; |
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neighlist[nneigh][0] = sp[0]; |
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neighlist[nneigh++][1] = (sp[1]+1)%NAZI; |
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neighlist[nneigh][0] = sp[0]; |
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neighlist[nneigh++][1] = (sp[1]+(NAZI-1))%NAZI; |
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neighlist[nneigh][0] = sp[0]+1; |
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neighlist[nneigh++][1] = (sp[1]+1)%NAZI; |
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neighlist[nneigh][0] = sp[0]+1; |
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neighlist[nneigh++][1] = sp[1]; |
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neighlist[nneigh][0] = sp[0]+1; |
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neighlist[nneigh++][1] = (sp[1]+(NAZI-1))%NAZI; |
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} |
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return(nneigh); |
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} |
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static |
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ssph_compute() /* compute source set from sphere samples */ |
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{ |
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int ncells, nsamps; |
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COLOR csum; |
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FVECT v; |
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double d, thresh, maxbr; |
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int maxalt, maxazi, spos[2]; |
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register int alt, azi; |
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register struct lsource *ls; |
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/* count & average sampled cells */ |
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setcolor(csum, 0., 0., 0.); |
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ncells = nsamps = 0; |
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for (alt = 0; alt < NALT; alt++) |
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for (azi = 0; azi < NAZI; azi++) |
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if (ssamp[alt][azi].nsamp) { |
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if (ssamp[alt][azi].nsamp > 1) { |
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d = 1.0/ssamp[alt][azi].nsamp; |
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scalecolor(ssamp[alt][azi].val, d); |
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} |
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addcolor(csum, ssamp[alt][azi].val); |
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nsamps += ssamp[alt][azi].nsamp; |
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ncells++; |
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} |
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if (dlightsets == NULL | ncells < NALT*NAZI/4) { |
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bzero((char *)ssamp, sizeof(ssamp)); |
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return(0); |
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} |
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/* harmonic mean distance */ |
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if (dlightsets->ravg > FTINY) |
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dlightsets->ravg = nsamps / dlightsets->ravg; |
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else |
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dlightsets->ravg = FHUGE; |
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/* light source threshold */ |
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thresh = MINTHRESH*bright(csum)/ncells; |
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/* avg. reflected brightness */ |
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d = AVGREFL / (double)ncells; |
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scalecolor(csum, d); |
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if (tmCvColors(&dlightsets->larb, TM_NOCHROM, csum, 1) != TM_E_OK) |
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error(CONSISTENCY, "bad tone mapping in ssph_compute"); |
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/* greedy light source clustering */ |
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while (dlightsets->nl < MAXLIGHTS) { |
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maxbr = 0.; /* find brightest cell */ |
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for (alt = 0; alt < NALT; alt++) |
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for (azi = 0; azi < NAZI; azi++) |
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if ((d = bright(ssamp[alt][azi].val)) > maxbr) { |
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maxalt = alt; maxazi = azi; |
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maxbr = d; |
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} |
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if (maxbr < thresh) /* below threshold? */ |
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break; |
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ls = dlightsets->li + dlightsets->nl++; |
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spos[0] = maxalt; spos[1] = maxazi; /* cluster */ |
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for (ssph_neigh(spos, 0); ssph_neigh(spos, 1); ) { |
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alt = spos[0]; azi = spos[1]; |
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if ((d = bright(ssamp[alt][azi].val)) < .75*thresh) |
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continue; /* too dim */ |
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ssph_direc(v, alt, azi); /* else add it in */ |
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VSUM(ls->direc, ls->direc, v, d); |
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ls->omega++; |
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addcolor(ls->val, ssamp[alt][azi].val); |
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setcolor(ssamp[alt][azi].val, 0., 0., 0.); |
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} |
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d = 1./ls->omega; /* avg. brightness */ |
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scalecolor(ls->val, d); |
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ls->omega *= 4.*PI/(NALT*NAZI); /* solid angle */ |
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normalize(ls->direc); /* direction */ |
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} |
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/* compute ambient remainder */ |
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for (alt = 0; alt < NALT; alt++) |
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for (azi = 0; azi < NAZI; azi++) |
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if (ssamp[alt][azi].nsamp) |
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addcolor(dlightsets->lamb, ssamp[alt][azi].val); |
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d = 1.0/ncells; |
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scalecolor(dlightsets->lamb, d); |
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/* clear sphere sample array */ |
| 333 |
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bzero((char *)ssamp, sizeof(ssamp)); |
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return(ncells); |
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} |
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static |
| 339 |
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getdlights(op, force) /* get lights for display object */ |
| 340 |
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register DOBJECT *op; |
| 341 |
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int force; |
| 342 |
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{ |
| 343 |
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double d2, mind2 = FHUGE*FHUGE; |
| 344 |
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FVECT ocent; |
| 345 |
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VIEW cvw; |
| 346 |
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register DLIGHTS *dl; |
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| 348 |
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op->ol = NULL; |
| 349 |
|
|
if (op->drawcode != DO_LIGHT) |
| 350 |
|
|
return(0); |
| 351 |
|
|
/* check for usable light set */ |
| 352 |
|
|
multp3(ocent, op->center, op->xfb.f.xfm); |
| 353 |
|
|
for (dl = dlightsets; dl != NULL; dl = dl->next) |
| 354 |
|
|
if ((d2 = dist2(dl->lcent, ocent)) < mind2) { |
| 355 |
|
|
op->ol = dl; |
| 356 |
|
|
mind2 = d2; |
| 357 |
|
|
} |
| 358 |
|
|
/* the following is heuristic */ |
| 359 |
|
|
d2 = 2.*op->radius*op->xfb.f.sca; d2 *= d2; |
| 360 |
|
|
if ((dl = op->ol) != NULL && (mind2 < 0.0625*dl->ravg*dl->ravg || |
| 361 |
|
|
mind2 < 4.*op->radius*op->xfb.f.sca*op->radius*op->xfb.f.sca)) |
| 362 |
|
|
return(1); |
| 363 |
|
|
if (!force) |
| 364 |
|
|
return(0); |
| 365 |
|
|
/* need to compute new light set */ |
| 366 |
|
|
copystruct(&cvw, &stdview); |
| 367 |
|
|
cvw.type = VT_PER; |
| 368 |
|
|
VCOPY(cvw.vp, ocent); |
| 369 |
|
|
cvw.vup[0] = 1.; cvw.vup[1] = cvw.vup[2] = 0.; |
| 370 |
|
|
cvw.horiz = 90; cvw.vert = 90.; |
| 371 |
|
|
beam_init(1); /* query beams through center */ |
| 372 |
|
|
cvw.vdir[0] = cvw.vdir[1] = 0.; cvw.vdir[2] = 1.; |
| 373 |
|
|
setview(&cvw); beam_view(&cvw, 0, 0); |
| 374 |
|
|
cvw.vdir[0] = cvw.vdir[1] = 0.; cvw.vdir[2] = -1.; |
| 375 |
|
|
setview(&cvw); beam_view(&cvw, 0, 0); |
| 376 |
|
|
cvw.vup[0] = cvw.vup[1] = 0.; cvw.vup[2] = 1.; |
| 377 |
|
|
cvw.vdir[0] = cvw.vdir[2] = 0.; cvw.vdir[1] = 1.; |
| 378 |
|
|
setview(&cvw); beam_view(&cvw, 0, 0); |
| 379 |
|
|
cvw.vdir[0] = cvw.vdir[2] = 0.; cvw.vdir[1] = -1.; |
| 380 |
|
|
setview(&cvw); beam_view(&cvw, 0, 0); |
| 381 |
|
|
cvw.vdir[1] = cvw.vdir[2] = 0.; cvw.vdir[0] = 1.; |
| 382 |
|
|
setview(&cvw); beam_view(&cvw, 0, 0); |
| 383 |
|
|
cvw.vdir[1] = cvw.vdir[2] = 0.; cvw.vdir[0] = -1.; |
| 384 |
|
|
setview(&cvw); beam_view(&cvw, 0, 0); |
| 385 |
|
|
/* allocate new light set */ |
| 386 |
|
|
dl = (DLIGHTS *)calloc(1, sizeof(DLIGHTS)); |
| 387 |
|
|
if (dl == NULL) |
| 388 |
|
|
goto memerr; |
| 389 |
|
|
VCOPY(dl->lcent, ocent); |
| 390 |
|
|
/* push onto our light set list */ |
| 391 |
|
|
dl->next = dlightsets; |
| 392 |
|
|
dlightsets = dl; |
| 393 |
|
|
dobj_lightsamp = ssph_sample; /* get beams from server */ |
| 394 |
|
|
imm_mode = beam_sync(-1) > 0; |
| 395 |
|
|
while (imm_mode) |
| 396 |
|
|
if (serv_result() == DS_SHUTDOWN) |
| 397 |
|
|
quit(0); |
| 398 |
|
|
if (!ssph_compute()) { /* compute light sources from sphere */ |
| 399 |
|
|
dlightsets = dl->next; |
| 400 |
|
|
free((char *)dl); |
| 401 |
|
|
return(0); |
| 402 |
|
|
} |
| 403 |
|
|
op->ol = dl; |
| 404 |
|
|
return(1); |
| 405 |
|
|
memerr: |
| 406 |
|
|
error(SYSTEM, "out of memory in getdlights"); |
| 407 |
|
|
} |
| 408 |
|
|
|
| 409 |
|
|
|
| 410 |
|
|
static int |
| 411 |
|
|
cmderror(cn, err) /* report command error */ |
| 412 |
|
|
int cn; |
| 413 |
|
|
char *err; |
| 414 |
|
|
{ |
| 415 |
|
|
sprintf(errmsg, "%s: %s", rhdcmd[cn], err); |
| 416 |
|
|
error(COMMAND, errmsg); |
| 417 |
|
|
return(cn); |
| 418 |
|
|
} |
| 419 |
|
|
|
| 420 |
|
|
|
| 421 |
|
|
int |
| 422 |
|
|
dobj_command(cmd, args) /* run object display command */ |
| 423 |
|
|
char *cmd; |
| 424 |
|
|
register char *args; |
| 425 |
|
|
{ |
| 426 |
|
|
int cn, na, doxfm; |
| 427 |
|
|
register int nn; |
| 428 |
|
|
char *alist[MAXAC+1], *nm; |
| 429 |
|
|
/* find command */ |
| 430 |
|
|
for (cn = 0; cn < DO_NCMDS; cn++) |
| 431 |
|
|
if (!strcmp(cmd, rhdcmd[cn])) |
| 432 |
|
|
break; |
| 433 |
|
|
if (cn >= DO_NCMDS) |
| 434 |
|
|
return(-1); /* not in our list */ |
| 435 |
|
|
/* make argument list */ |
| 436 |
|
|
for (na = 0; *args; na++) { |
| 437 |
|
|
if (na > MAXAC) |
| 438 |
|
|
goto toomany; |
| 439 |
|
|
alist[na] = args; |
| 440 |
|
|
while (*args && !isspace(*args)) |
| 441 |
|
|
args++; |
| 442 |
|
|
while (isspace(*args)) |
| 443 |
|
|
*args++ = '\0'; |
| 444 |
|
|
} |
| 445 |
|
|
alist[na] = NULL; |
| 446 |
|
|
/* execute command */ |
| 447 |
|
|
switch (cn) { |
| 448 |
|
|
case DO_LOAD: /* load an octree */ |
| 449 |
|
|
if (na == 1) |
| 450 |
|
|
dobj_load(alist[0], alist[0]); |
| 451 |
|
|
else if (na == 2) |
| 452 |
|
|
dobj_load(alist[0], alist[1]); |
| 453 |
|
|
else |
| 454 |
|
|
return(cmderror(cn, "need octree [name]")); |
| 455 |
|
|
break; |
| 456 |
|
|
case DO_UNLOAD: /* unload an object */ |
| 457 |
|
|
if (na > 1) goto toomany; |
| 458 |
|
|
if (na && alist[0][0] == '*') |
| 459 |
|
|
dobj_cleanup(); |
| 460 |
|
|
else |
| 461 |
|
|
dobj_unload(na ? alist[0] : curname); |
| 462 |
|
|
break; |
| 463 |
|
|
case DO_XFORM: /* transform object */ |
| 464 |
|
|
case DO_MOVE: |
| 465 |
|
|
if (na && alist[0][0] != '-') { |
| 466 |
|
|
nm = alist[0]; nn = 1; |
| 467 |
|
|
} else { |
| 468 |
|
|
nm = curname; nn = 0; |
| 469 |
|
|
} |
| 470 |
|
|
if (cn == DO_MOVE && nn >= na) |
| 471 |
|
|
return(cmderror(cn, "missing transform")); |
| 472 |
|
|
dobj_xform(nm, cn==DO_MOVE, na-nn, alist+nn); |
| 473 |
|
|
break; |
| 474 |
|
|
case DO_UNMOVE: /* undo last transform */ |
| 475 |
|
|
dobj_unmove(); |
| 476 |
|
|
break; |
| 477 |
|
|
case DO_OBJECT: /* print object statistics */ |
| 478 |
|
|
dobj_putstats(na ? alist[0] : curname, sstdout); |
| 479 |
|
|
break; |
| 480 |
|
|
case DO_DUP: /* duplicate object */ |
| 481 |
|
|
for (nn = 0; nn < na; nn++) |
| 482 |
|
|
if (alist[nn][0] == '-') |
| 483 |
|
|
break; |
| 484 |
|
|
switch (nn) { |
| 485 |
|
|
case 0: |
| 486 |
|
|
return(cmderror(cn, "need new object name")); |
| 487 |
|
|
case 1: |
| 488 |
|
|
nm = curname; |
| 489 |
|
|
break; |
| 490 |
|
|
case 2: |
| 491 |
|
|
nm = alist[0]; |
| 492 |
|
|
break; |
| 493 |
|
|
default: |
| 494 |
|
|
goto toomany; |
| 495 |
|
|
} |
| 496 |
|
|
if (!dobj_dup(nm, alist[nn-1])) |
| 497 |
|
|
break; |
| 498 |
|
|
if (na > nn) |
| 499 |
|
|
dobj_xform(curname, 1, na-nn, alist+nn); |
| 500 |
|
|
else |
| 501 |
|
|
curobj->drawcode = DO_HIDE; |
| 502 |
|
|
break; |
| 503 |
|
|
case DO_SHOW: /* change rendering option */ |
| 504 |
|
|
case DO_LIGHT: |
| 505 |
|
|
case DO_HIDE: |
| 506 |
|
|
if (na > 1) goto toomany; |
| 507 |
|
|
dobj_lighting(na ? alist[0] : curname, cn); |
| 508 |
|
|
break; |
| 509 |
|
|
default: |
| 510 |
|
|
error(CONSISTENCY, "bad command id in dobj_command"); |
| 511 |
|
|
} |
| 512 |
|
|
dev_view(&odev.v); /* redraw */ |
| 513 |
|
|
return(cn); |
| 514 |
|
|
toomany: |
| 515 |
|
|
return(cmderror(cn, "too many arguments")); |
| 516 |
|
|
} |
| 517 |
|
|
|
| 518 |
|
|
|
| 519 |
|
|
dobj_load(oct, nam) /* create/load an octree object */ |
| 520 |
|
|
char *oct, *nam; |
| 521 |
|
|
{ |
| 522 |
|
|
extern char *getlibpath(), *getpath(); |
| 523 |
|
|
char *fpp, fpath[128]; |
| 524 |
|
|
register DOBJECT *op; |
| 525 |
|
|
/* check arguments */ |
| 526 |
|
|
if (oct == NULL) { |
| 527 |
|
|
error(COMMAND, "missing octree"); |
| 528 |
|
|
return(0); |
| 529 |
|
|
} |
| 530 |
|
|
if (nam == NULL) { |
| 531 |
|
|
error(COMMAND, "missing name"); |
| 532 |
|
|
return(0); |
| 533 |
|
|
} |
| 534 |
|
|
if (*nam == '*' | *nam == '-') { |
| 535 |
|
|
error(COMMAND, "illegal name"); |
| 536 |
|
|
return(0); |
| 537 |
|
|
} |
| 538 |
|
|
/* get octree path */ |
| 539 |
|
|
if ((fpp = getpath(oct, getlibpath(), R_OK)) == NULL) { |
| 540 |
|
|
sprintf(errmsg, "cannot find octree \"%s\"", oct); |
| 541 |
|
|
error(COMMAND, errmsg); |
| 542 |
|
|
return(0); |
| 543 |
|
|
} |
| 544 |
|
|
strcpy(fpath, fpp); |
| 545 |
|
|
freedobj(getdobj(nam)); /* free previous use of nam */ |
| 546 |
|
|
op = (DOBJECT *)malloc(sizeof(DOBJECT)); |
| 547 |
|
|
if (op == NULL) |
| 548 |
|
|
error(SYSTEM, "out of memory in dobj_load"); |
| 549 |
|
|
/* set struct fields */ |
| 550 |
|
|
strcpy(op->name, nam); |
| 551 |
|
|
op->ol = NULL; |
| 552 |
|
|
op->drawcode = DO_HIDE; |
| 553 |
|
|
setident4(op->xfb.f.xfm); op->xfb.f.sca = 1.; |
| 554 |
|
|
setident4(op->xfb.b.xfm); op->xfb.b.sca = 1.; |
| 555 |
|
|
op->xfav[op->xfac=0] = NULL; |
| 556 |
|
|
/* load octree into display list */ |
| 557 |
|
|
dolights = 0; |
| 558 |
|
|
op->listid = rgl_octlist(fpath, op->center, &op->radius); |
| 559 |
|
|
/* start rtrace */ |
| 560 |
|
|
rtargv[RTARGC-1] = fpath; |
| 561 |
|
|
rtargv[RTARGC] = NULL; |
| 562 |
|
|
open_process(op->rtp, rtargv); |
| 563 |
|
|
/* insert into main list */ |
| 564 |
|
|
op->next = dobjects; |
| 565 |
|
|
curobj = dobjects = op; |
| 566 |
|
|
savedxf(NULL); |
| 567 |
|
|
return(1); |
| 568 |
|
|
} |
| 569 |
|
|
|
| 570 |
|
|
|
| 571 |
|
|
dobj_unload(nam) /* free the named object */ |
| 572 |
|
|
char *nam; |
| 573 |
|
|
{ |
| 574 |
|
|
register DOBJECT *op; |
| 575 |
|
|
|
| 576 |
|
|
if ((op = getdobj(nam)) == NULL) { |
| 577 |
|
|
error(COMMAND, "no object"); |
| 578 |
|
|
return(0); |
| 579 |
|
|
} |
| 580 |
|
|
freedobj(op); |
| 581 |
|
|
savedxf(curobj = NULL); |
| 582 |
|
|
return(1); |
| 583 |
|
|
} |
| 584 |
|
|
|
| 585 |
|
|
|
| 586 |
|
|
dobj_cleanup() /* free all resources */ |
| 587 |
|
|
{ |
| 588 |
|
|
register DLIGHTS *lp; |
| 589 |
|
|
|
| 590 |
|
|
while (dobjects != NULL) |
| 591 |
|
|
freedobj(dobjects); |
| 592 |
|
|
savedxf(curobj = NULL); |
| 593 |
|
|
while ((lp = dlightsets) != NULL) { |
| 594 |
|
|
dlightsets = lp->next; |
| 595 |
|
|
free((char *)lp); |
| 596 |
|
|
} |
| 597 |
|
|
return(1); |
| 598 |
|
|
} |
| 599 |
|
|
|
| 600 |
|
|
|
| 601 |
|
|
dobj_xform(nam, add, ac, av) /* set/add transform for nam */ |
| 602 |
|
|
char *nam; |
| 603 |
|
|
int add, ac; |
| 604 |
|
|
char **av; |
| 605 |
|
|
{ |
| 606 |
|
|
register DOBJECT *op; |
| 607 |
|
|
|
| 608 |
|
|
if ((op = getdobj(nam)) == NULL) { |
| 609 |
|
|
error(COMMAND, "no object"); |
| 610 |
|
|
return(0); |
| 611 |
|
|
} |
| 612 |
|
|
if (add) add = op->xfac; |
| 613 |
|
|
if (ac + add > MAXAC) { |
| 614 |
|
|
error(COMMAND, "too many transform arguments"); |
| 615 |
|
|
return(0); |
| 616 |
|
|
} |
| 617 |
|
|
savedxf(curobj = op); |
| 618 |
|
|
if (!add) |
| 619 |
|
|
while (op->xfac) |
| 620 |
|
|
freestr(op->xfav[--op->xfac]); |
| 621 |
|
|
while (ac--) |
| 622 |
|
|
op->xfav[op->xfac++] = savestr(*av++); |
| 623 |
|
|
op->xfav[op->xfac] = NULL; |
| 624 |
|
|
if (fullxf(&op->xfb, op->xfac, op->xfav) != op->xfac) { |
| 625 |
|
|
error(COMMAND, "bad transform arguments"); |
| 626 |
|
|
dobj_unmove(); |
| 627 |
|
|
savedxf(op); /* save current transform instead */ |
| 628 |
|
|
return(0); |
| 629 |
|
|
} |
| 630 |
|
|
/* don't know local lights anymore */ |
| 631 |
|
|
getdlights(op, 0); |
| 632 |
|
|
return(1); |
| 633 |
|
|
} |
| 634 |
|
|
|
| 635 |
|
|
|
| 636 |
|
|
dobj_putstats(nam, fp) /* put out statistics for nam */ |
| 637 |
|
|
char *nam; |
| 638 |
|
|
FILE *fp; |
| 639 |
|
|
{ |
| 640 |
|
|
FVECT ocent; |
| 641 |
|
|
register DOBJECT *op; |
| 642 |
|
|
register int i; |
| 643 |
|
|
|
| 644 |
|
|
if (nam == NULL) { |
| 645 |
|
|
error(COMMAND, "no current object"); |
| 646 |
|
|
return(0); |
| 647 |
|
|
} |
| 648 |
|
|
if (nam[0] == '*') { |
| 649 |
|
|
i = 0; |
| 650 |
|
|
for (op = dobjects; op != NULL; op = op->next) |
| 651 |
|
|
i += dobj_putstats(op->name, fp); |
| 652 |
|
|
return(i); |
| 653 |
|
|
} |
| 654 |
|
|
if ((op = getdobj(nam)) == NULL) { |
| 655 |
|
|
error(COMMAND, "unknown object"); |
| 656 |
|
|
return(0); |
| 657 |
|
|
} |
| 658 |
|
|
multp3(ocent, op->center, op->xfb.f.xfm); |
| 659 |
|
|
fprintf(fp, "%s: %s, center [%f %f %f], radius %f", op->name, |
| 660 |
|
|
op->drawcode==DO_HIDE ? "hid" : |
| 661 |
|
|
op->drawcode==DO_LIGHT && op->ol!=NULL ? "lit" : |
| 662 |
|
|
"shown", |
| 663 |
|
|
ocent[0],ocent[1],ocent[2], op->radius*op->xfb.f.sca); |
| 664 |
|
|
if (op->xfac) |
| 665 |
|
|
fputs(", (xform", fp); |
| 666 |
|
|
for (i = 0; i < op->xfac; i++) { |
| 667 |
|
|
putc(' ', fp); |
| 668 |
|
|
fputs(op->xfav[i], fp); |
| 669 |
|
|
} |
| 670 |
|
|
if (op->xfac) |
| 671 |
|
|
fputc(')', fp); |
| 672 |
|
|
fputc('\n', fp); |
| 673 |
|
|
return(1); |
| 674 |
|
|
} |
| 675 |
|
|
|
| 676 |
|
|
|
| 677 |
|
|
dobj_unmove() /* undo last transform change */ |
| 678 |
|
|
{ |
| 679 |
|
|
int txfac; |
| 680 |
|
|
char *txfav[MAXAC+1]; |
| 681 |
|
|
|
| 682 |
|
|
if (curobj == NULL) { |
| 683 |
|
|
error(COMMAND, "no current object"); |
| 684 |
|
|
return(0); |
| 685 |
|
|
} |
| 686 |
|
|
/* hold last transform */ |
| 687 |
|
|
bcopy((char *)lastxfav, (char *)txfav, |
| 688 |
|
|
(txfac=lastxfac)*sizeof(char *)); |
| 689 |
|
|
/* save this transform */ |
| 690 |
|
|
bcopy((char *)curobj->xfav, (char *)lastxfav, |
| 691 |
|
|
(lastxfac=curobj->xfac)*sizeof(char *)); |
| 692 |
|
|
/* copy back last transform */ |
| 693 |
|
|
bcopy((char *)txfav, (char *)curobj->xfav, |
| 694 |
|
|
(curobj->xfac=txfac)*sizeof(char *)); |
| 695 |
|
|
/* set matrices */ |
| 696 |
|
|
fullxf(&curobj->xfb, curobj->xfac, curobj->xfav); |
| 697 |
|
|
/* don't know local lights anymore */ |
| 698 |
|
|
getdlights(curobj, 0); |
| 699 |
|
|
return(1); |
| 700 |
|
|
} |
| 701 |
|
|
|
| 702 |
|
|
|
| 703 |
|
|
dobj_dup(oldnm, nam) /* duplicate object oldnm as nam */ |
| 704 |
|
|
char *oldnm, *nam; |
| 705 |
|
|
{ |
| 706 |
|
|
register DOBJECT *op, *opdup; |
| 707 |
|
|
/* check arguments */ |
| 708 |
|
|
if ((op = getdobj(oldnm)) == NULL) { |
| 709 |
|
|
error(COMMAND, "no object"); |
| 710 |
|
|
return(0); |
| 711 |
|
|
} |
| 712 |
|
|
if (nam == NULL) { |
| 713 |
|
|
error(COMMAND, "missing name"); |
| 714 |
|
|
return(0); |
| 715 |
|
|
} |
| 716 |
|
|
if (*nam == '*' | *nam == '-') { |
| 717 |
|
|
error(COMMAND, "illegal name"); |
| 718 |
|
|
return(0); |
| 719 |
|
|
} |
| 720 |
|
|
/* allocate and copy struct */ |
| 721 |
|
|
opdup = (DOBJECT *)malloc(sizeof(DOBJECT)); |
| 722 |
|
|
if (opdup == NULL) |
| 723 |
|
|
error(SYSTEM, "out of memory in dobj_dup"); |
| 724 |
|
|
copystruct(opdup, op); |
| 725 |
|
|
/* rename */ |
| 726 |
|
|
strcpy(opdup->name, nam); |
| 727 |
|
|
/* get our own copy of transform */ |
| 728 |
|
|
for (opdup->xfac = 0; opdup->xfac < op->xfac; opdup->xfac++) |
| 729 |
|
|
opdup->xfav[opdup->xfac] = savestr(op->xfav[opdup->xfac]); |
| 730 |
|
|
opdup->xfav[opdup->xfac] = NULL; |
| 731 |
|
|
/* insert it into our list */ |
| 732 |
|
|
opdup->next = dobjects; |
| 733 |
|
|
curobj = dobjects = opdup; |
| 734 |
|
|
return(1); |
| 735 |
|
|
} |
| 736 |
|
|
|
| 737 |
|
|
|
| 738 |
|
|
dobj_lighting(nam, cn) /* set up lighting for display object */ |
| 739 |
|
|
char *nam; |
| 740 |
|
|
int cn; |
| 741 |
|
|
{ |
| 742 |
|
|
int i, res[2]; |
| 743 |
|
|
VIEW *dv; |
| 744 |
|
|
register DOBJECT *op; |
| 745 |
|
|
|
| 746 |
|
|
if (nam == NULL) { |
| 747 |
|
|
error(COMMAND, "no current object"); |
| 748 |
|
|
return(0); |
| 749 |
|
|
} |
| 750 |
|
|
if (nam[0] == '*') { |
| 751 |
|
|
for (op = dobjects; op != NULL; op = op->next) |
| 752 |
|
|
if ((op->drawcode = cn) == DO_LIGHT) |
| 753 |
|
|
getdlights(op, 1); |
| 754 |
|
|
else |
| 755 |
|
|
op->ol = NULL; |
| 756 |
|
|
} else if ((op = getdobj(nam)) == NULL) { |
| 757 |
|
|
error(COMMAND, "unknown object"); |
| 758 |
|
|
return(0); |
| 759 |
|
|
} else if ((op->drawcode = cn) == DO_LIGHT) |
| 760 |
|
|
getdlights(op, 1); |
| 761 |
|
|
else |
| 762 |
|
|
op->ol = NULL; |
| 763 |
|
|
|
| 764 |
|
|
if (dobj_lightsamp != NULL) { /* restore beam set */ |
| 765 |
|
|
dobj_lightsamp = NULL; |
| 766 |
|
|
beam_init(1); |
| 767 |
|
|
for (i = 0; (dv = dev_auxview(i, res)) != NULL; i++) |
| 768 |
|
|
beam_view(dv, res[0], res[1]); |
| 769 |
|
|
beam_sync(1); /* update server */ |
| 770 |
|
|
} |
| 771 |
|
|
} |
| 772 |
|
|
|
| 773 |
|
|
|
| 774 |
|
|
double |
| 775 |
|
|
dobj_trace(rorg, rdir) /* check for ray intersection with objects */ |
| 776 |
|
|
FVECT rorg, rdir; |
| 777 |
|
|
{ |
| 778 |
|
|
register DOBJECT *op; |
| 779 |
|
|
FVECT xorg, xdir; |
| 780 |
|
|
double darr[6], mindist = FHUGE; |
| 781 |
|
|
/* check each visible object */ |
| 782 |
|
|
for (op = dobjects; op != NULL; op = op->next) { |
| 783 |
|
|
if (op->drawcode == DO_HIDE) |
| 784 |
|
|
continue; |
| 785 |
|
|
if (op->xfac) { /* transform ray */ |
| 786 |
|
|
multp3(xorg, rorg, op->xfb.b.xfm); |
| 787 |
|
|
multv3(xdir, rdir, op->xfb.b.xfm); |
| 788 |
|
|
VCOPY(darr, xorg); VCOPY(darr+3, xdir); |
| 789 |
|
|
} else { |
| 790 |
|
|
VCOPY(darr, rorg); VCOPY(darr+3, rdir); |
| 791 |
|
|
} |
| 792 |
|
|
/* trace it */ |
| 793 |
|
|
if (process(op->rtp, darr, darr, sizeof(double), |
| 794 |
|
|
6*sizeof(double)) != sizeof(double)) |
| 795 |
|
|
error(SYSTEM, "rtrace communication error"); |
| 796 |
|
|
/* get closest */ |
| 797 |
|
|
if ((darr[0] *= op->xfb.f.sca) < mindist) |
| 798 |
|
|
mindist = darr[0]; |
| 799 |
|
|
} |
| 800 |
|
|
return(mindist); |
| 801 |
|
|
} |
| 802 |
|
|
|
| 803 |
|
|
|
| 804 |
|
|
dobj_render() /* render our objects in OpenGL */ |
| 805 |
|
|
{ |
| 806 |
|
|
GLboolean normalizing; |
| 807 |
|
|
GLfloat vec[4]; |
| 808 |
|
|
register DOBJECT *op; |
| 809 |
|
|
register int i; |
| 810 |
|
|
/* anything to render? */ |
| 811 |
|
|
for (op = dobjects; op != NULL; op = op->next) |
| 812 |
|
|
if (op->drawcode != DO_HIDE) |
| 813 |
|
|
break; |
| 814 |
|
|
if (op == NULL) |
| 815 |
|
|
return(1); |
| 816 |
|
|
/* set up general rendering params */ |
| 817 |
|
|
glGetBooleanv(GL_NORMALIZE, &normalizing); |
| 818 |
|
|
glPushAttrib(GL_LIGHTING_BIT|GL_TRANSFORM_BIT| |
| 819 |
|
|
GL_DEPTH_BUFFER_BIT|GL_POLYGON_BIT); |
| 820 |
|
|
glDepthFunc(GL_LESS); |
| 821 |
|
|
glEnable(GL_DEPTH_TEST); |
| 822 |
|
|
glLightModeli(GL_LIGHT_MODEL_TWO_SIDE, GL_TRUE); |
| 823 |
|
|
glPolygonMode(GL_FRONT_AND_BACK, GL_FILL); |
| 824 |
|
|
glShadeModel(GL_SMOOTH); |
| 825 |
|
|
glFrontFace(GL_CCW); |
| 826 |
|
|
glDisable(GL_CULL_FACE); |
| 827 |
|
|
for (i = MAXLIGHTS; i--; ) |
| 828 |
|
|
glDisable(glightid[i]); |
| 829 |
|
|
glEnable(GL_LIGHTING); |
| 830 |
|
|
rgl_checkerr("setting rendering modes in dobj_render"); |
| 831 |
|
|
/* render each object */ |
| 832 |
|
|
for (op = dobjects; op != NULL; op = op->next) { |
| 833 |
|
|
if (op->drawcode == DO_HIDE) |
| 834 |
|
|
continue; |
| 835 |
|
|
/* set up lighting */ |
| 836 |
|
|
if (op->drawcode == DO_LIGHT && op->ol != NULL) { |
| 837 |
|
|
BYTE pval; |
| 838 |
|
|
double expval, d; |
| 839 |
|
|
|
| 840 |
|
|
if (tmMapPixels(&pval, &op->ol->larb, TM_NOCHROM, 1) |
| 841 |
|
|
!= TM_E_OK) |
| 842 |
|
|
error(CONSISTENCY, "dobj_render w/o tone map"); |
| 843 |
|
|
expval = pval * (WHTEFFICACY/256.) / |
| 844 |
|
|
tmLuminance(op->ol->larb); |
| 845 |
|
|
vec[0] = expval * colval(op->ol->lamb,RED); |
| 846 |
|
|
vec[1] = expval * colval(op->ol->lamb,GRN); |
| 847 |
|
|
vec[2] = expval * colval(op->ol->lamb,BLU); |
| 848 |
|
|
vec[3] = 1.; |
| 849 |
|
|
glLightModelfv(GL_LIGHT_MODEL_AMBIENT, vec); |
| 850 |
|
|
for (i = op->ol->nl; i--; ) { |
| 851 |
|
|
VCOPY(vec, op->ol->li[i].direc); |
| 852 |
|
|
vec[3] = 0.; |
| 853 |
|
|
glLightfv(glightid[i], GL_POSITION, vec); |
| 854 |
|
|
d = expval * op->ol->li[i].omega; |
| 855 |
|
|
vec[0] = d * colval(op->ol->li[i].val,RED); |
| 856 |
|
|
vec[1] = d * colval(op->ol->li[i].val,GRN); |
| 857 |
|
|
vec[2] = d * colval(op->ol->li[i].val,BLU); |
| 858 |
|
|
vec[3] = 1.; |
| 859 |
|
|
glLightfv(glightid[i], GL_SPECULAR, vec); |
| 860 |
|
|
glLightfv(glightid[i], GL_DIFFUSE, vec); |
| 861 |
|
|
vec[0] = vec[1] = vec[2] = 0.; vec[3] = 1.; |
| 862 |
|
|
glLightfv(glightid[i], GL_AMBIENT, vec); |
| 863 |
|
|
glEnable(glightid[i]); |
| 864 |
|
|
} |
| 865 |
|
|
} else { |
| 866 |
|
|
vec[0] = vec[1] = vec[2] = 1.; vec[3] = 1.; |
| 867 |
|
|
glLightModelfv(GL_LIGHT_MODEL_AMBIENT, vec); |
| 868 |
|
|
} |
| 869 |
|
|
/* set up object transform */ |
| 870 |
|
|
if (op->xfac) { |
| 871 |
|
|
if (!normalizing && op->xfb.f.sca < 1.-FTINY | |
| 872 |
|
|
op->xfb.f.sca > 1.+FTINY) |
| 873 |
|
|
glEnable(GL_NORMALIZE); |
| 874 |
|
|
glMatrixMode(GL_MODELVIEW); |
| 875 |
|
|
glPushMatrix(); |
| 876 |
|
|
/* matrix order works out to same */ |
| 877 |
|
|
#ifdef SMLFLT |
| 878 |
|
|
glMultMatrixf((GLfloat *)op->xfb.f.xfm); |
| 879 |
|
|
#else |
| 880 |
|
|
glMultMatrixd((GLdouble *)op->xfb.f.xfm); |
| 881 |
|
|
#endif |
| 882 |
|
|
} |
| 883 |
|
|
/* render the display list */ |
| 884 |
|
|
glCallList(op->listid); |
| 885 |
|
|
/* restore matrix */ |
| 886 |
|
|
if (op->xfac) { |
| 887 |
|
|
glMatrixMode(GL_MODELVIEW); |
| 888 |
|
|
glPopMatrix(); |
| 889 |
|
|
if (!normalizing) |
| 890 |
|
|
glDisable(GL_NORMALIZE); |
| 891 |
|
|
} |
| 892 |
|
|
/* restore lighting */ |
| 893 |
|
|
if (op->drawcode == DO_LIGHT && op->ol != NULL) |
| 894 |
|
|
for (i = op->ol->nl; i--; ) |
| 895 |
|
|
glDisable(glightid[i]); |
| 896 |
|
|
/* check errors */ |
| 897 |
|
|
rgl_checkerr("rendering object in dobj_render"); |
| 898 |
|
|
} |
| 899 |
|
|
glPopAttrib(); /* restore rendering params */ |
| 900 |
|
|
return(1); |
| 901 |
|
|
} |
