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- /* ReadTDDD.c - read a TDDD (Three Dimension Data Decription) file
- * - written by Glenn M. Lewis - 9/4/91
- */
-
- static char rcs_id[] = "$Id: readtddd.c,v 1.30 1993/02/14 07:27:06 glewis Exp glewis $";
-
- #include <stdio.h>
- #include <ctype.h>
- #include <math.h>
- #include "t3dlib.h"
- #ifdef __STDC__
- #include <stdlib.h>
- #include <strings.h>
- #include "readtddd_protos.h"
- #endif
- #define MAXLINE 132
- #ifndef PI
- #define PI (3.14159265)
- #endif
-
- int verbose_flag=0;
-
- static void process_DESC();
- static OBJECT *process_EXTR();
- static void process_INFO();
- static void process_OBJ();
- void insert_into_sorted_list();
-
- /* Here are a few necessary utilities */
-
- static void get_name(name, size, world)
- register char *name;
- register int size;
- WORLD *world;
- {
- while (size--) *name++ = fgetc(world->inp);
- *name = '\0';
- }
-
- static BYTE get_BYTE(world)
- WORLD *world;
- {
- return((BYTE)fgetc(world->inp));
- }
-
- static UBYTE get_UBYTE(world)
- WORLD *world;
- {
- return((UBYTE)fgetc(world->inp));
- }
-
- static WORD get_WORD(world)
- WORLD *world;
- {
- WORD tmp = (WORD)get_UBYTE(world)<<8;
- return((WORD)(tmp|get_UBYTE(world)));
- }
-
- static UWORD get_UWORD(world)
- WORLD *world;
- {
- UWORD tmp = (UWORD)get_UBYTE(world)<<8;
- return((UWORD)(tmp|get_UBYTE(world)));
- }
-
- static ULONG get_ULONG(world)
- WORLD *world;
- {
- ULONG tmp = (ULONG)get_UWORD(world)<<16;
- return(tmp|get_UWORD(world));
- }
-
- static double get_FRACT(world) /* This sets the precision to 10^(-3) */
- WORLD *world;
- {
- register double whole, fract;
-
- whole = (double)get_WORD(world);
- fract = ((double)get_UWORD(world))/(double)65536.0;
- return((double)(whole+fract));
- }
-
- static void stuff_XYZ(st, world)
- XYZ_st *st;
- WORLD *world;
- {
- st->x = get_FRACT(world);
- st->y = get_FRACT(world);
- st->z = get_FRACT(world);
- }
-
- static void stuff_RGB(st, world)
- RGB_st *st;
- WORLD *world;
- {
- get_UBYTE(world); /* pad byte */
- st->r = get_UBYTE(world);
- st->g = get_UBYTE(world);
- st->b = get_UBYTE(world);
- }
-
- static void output_warning(world, area, name, size)
- WORLD *world;
- char *area, *name;
- ULONG size;
- {
- ULONG i;
- int j;
- unsigned char tmpstr[20];
-
- fprintf(stderr, "WARNING: Unknown %ssub-chunk: '%s', size %lu...\n",
- area, name, size);
- for (i=0; i<size; i+=16) {
- fprintf(stderr, "%04lx:", i);
- for (j=0; j<16 && i+j<size; j++)
- fprintf(stderr, " %02x", tmpstr[j] = (fgetc(world->inp)&0xff));
- while (j++ < 16) fputs(" ", stderr);
- fputs(" ", stderr);
- /* Print out the ASCII equivalent */
- for (j=0; j<16 && i+j<size; j++) {
- tmpstr[j] &= 0x7F; /* Strip off upper bit */
- if (isprint(tmpstr[j]))
- fputc(tmpstr[j], stderr);
- else fputc('.', stderr);
- }
- fputs("\n", stderr);
- }
- }
-
- /********************/
- /* The MAIN section */
- /********************/
-
- int already_read_header = 0;
- unsigned char header_storage[13];
-
- WORLD *read_World(file)
- FILE *file;
- {
- int i;
- for (i=0; i<4; i++) header_storage[i] = fgetc(file);
- already_read_header = 4;
- if (strncmp(header_storage, "FORM", 4)==0) {
- while (i<12) header_storage[i++] = fgetc(file);
- already_read_header = 12;
- if (strncmp(&header_storage[8], "TDDD", 4)==0) return(read_TDDD(file));
- #if 0
- if (strncmp(&header_storage[8], "LWOB", 4)==0) return(read_LWOB(file));
- #endif
- if (strncmp(&header_storage[8], "ISTG", 4)==0) return(read_ISTG(file));
- /* BAD IFF */
- header_storage[12] = 0;
- fprintf(stderr, "ERROR! Unknown FORM: '%s'\n", &header_storage[8]);
- return(0);
- } else {
- return(read_TTDDD(file));
- }
- }
-
- WORLD *read_TDDD(file)
- FILE *file;
- {
- register ULONG i, len, size;
- WORLD *world;
- char name[5];
-
- if (!file) return(0L); /* File not open */
-
- if (!(world = (WORLD*)malloc(sizeof(WORLD)))) { OUT_MEM("WORLD"); }
- bzero((char*)world, sizeof(WORLD));
- world->inp = file;
-
- if (!already_read_header) {
- /* Parse the IFF TDDD file */
- get_name(name, 4, world);
- if (strcmp(name, "FORM") != 0) {
- fprintf(stderr, "ERROR: Input is not an IFF file.\n"); exit(-1); }
- if (!(len = get_ULONG(world))) {
- fprintf(stderr, "ERROR: Bad FORM length in IFF file.\n"); exit(-1); }
- get_name(name, 4, world);
- if (strcmp(name, "TDDD") != 0) {
- fprintf(stderr, "ERROR: IFF file is not a TDDD file.\n"); exit(-1); }
- } else {
- len = (header_storage[4]<<24) | (header_storage[5]<<16) |
- (header_storage[6]<< 8) | (header_storage[7] );
- already_read_header = 0;
- }
- len -= 4;
-
- /* Here is the main loop: */
- while (len>0) {
- get_name(name, 4, world);
- size = get_ULONG(world);
- len -= 8;
- if (strcmp(name, "INFO")==0) process_INFO(size, world);
- else
- if (strcmp(name, "OBJ ")==0) process_OBJ(size, world);
- else {
- if (verbose_flag) output_warning(world, "", name, size);
- else {
- for (i=size; i--; ) fgetc(world->inp); /* Skip this section */
- }
- }
- if (size&1) { fgetc(world->inp); len--; } /* Skip odd byte */
- len -= size;
- }
-
- /* All done. */
- return(world);
- }
-
- static void process_INFO(len, world)
- register ULONG len;
- WORLD *world;
- {
- register INFO *info;
- register ULONG i, size;
- char name[5];
-
- if (world->info) {
- fputs("ERROR: More than one INFO chunk!\n", stderr); exit(-1); }
- if (!(info = world->info = (INFO*)malloc(sizeof(INFO)))) { OUT_MEM("INFO"); }
- bzero((char*)world->info, sizeof(INFO));
-
- if (verbose_flag>1) fprintf(stderr, "INFO chunk.\n");
- while (len>0) {
- get_name(name, 4, world);
- size = get_ULONG(world);
- len -= 8;
- if (verbose_flag>1) fprintf(stderr, "%s chunk.\n", name);
- if (strcmp(name, "BRSH")==0) {
- i = get_UWORD(world);
- if (i<0 || i>7) { i=0; fputs("BRSH error.\n", stderr); }
- get_name(info->brsh[i], 80, world);
- } else
- if (strcmp(name, "STNC")==0) {
- i = get_UWORD(world);
- if (i<0 || i>7) { i=0; fputs("STNC error.\n", stderr); }
- get_name(info->stnc[i], 80, world);
- } else
- if (strcmp(name, "TXTR")==0) {
- i = get_UWORD(world);
- if (i<0 || i>7) { i=0; fputs("TXTR error.\n", stderr); }
- get_name(info->txtr[i], 80, world);
- } else
- if (strcmp(name, "OBSV")==0) {
- if (!info->obsv) info->obsv=(OBSV*)malloc(sizeof(OBSV));
- if (!info->obsv) { OUT_MEM("OBSV"); }
- stuff_XYZ(&info->obsv->came, world);
- stuff_XYZ(&info->obsv->rota, world);
- info->obsv->foca = get_FRACT(world);
- } else
- if (strcmp(name, "OTRK")==0) {
- get_name(info->otrk, 18, world);
- } else
- if (strcmp(name, "OSTR")==0) {
- if (!info->ostr) info->ostr=(STRY*)malloc(sizeof(STRY));
- if (!info->ostr) { OUT_MEM("OSTR"); }
- get_name(info->ostr->path, 18, world);
- stuff_XYZ(&info->ostr->tran, world);
- stuff_XYZ(&info->ostr->rota, world);
- stuff_XYZ(&info->ostr->scal, world);
- info->ostr->info = get_UWORD(world);
- } else
- if (strcmp(name, "FADE")==0) {
- if (!info->fade) info->fade=(FADE*)malloc(sizeof(FADE));
- if (!info->fade) { OUT_MEM("FADE"); }
- info->fade->at = get_FRACT(world);
- info->fade->by = get_FRACT(world);
- stuff_RGB(&info->fade->to, world);
- } else
- if (strcmp(name, "SKYC")==0) {
- if (!info->skyc) info->skyc=(SKYC*)malloc(sizeof(SKYC));
- if (!info->skyc) { OUT_MEM("SKYC"); }
- stuff_RGB(&info->skyc->hori, world);
- stuff_RGB(&info->skyc->zeni, world);
- } else
- if (strcmp(name, "AMBI")==0) {
- if (!info->ambi) info->ambi=(RGB_st*)malloc(sizeof(RGB_st));
- if (!info->ambi) { OUT_MEM("AMBI"); }
- stuff_RGB(info->ambi, world);
- } else
- if (strcmp(name, "GLB0")==0) {
- if (!info->glb0) info->glb0=(BYTE*)malloc(8*sizeof(BYTE));
- if (!info->glb0) { OUT_MEM("GLB0"); }
- for (i=0; i<8; i++)
- info->glb0[i] = get_UBYTE(world);
- } else {
- if (verbose_flag) output_warning(world, "INFO ", name, size);
- else {
- for (i=size; i--; ) fgetc(world->inp); /* Skip this section */
- }
- }
- if (size&1) { fgetc(world->inp); len--; } /* Skip odd byte */
- len -= size;
- }
- }
-
- static void process_OBJ(len, world)
- register ULONG len;
- WORLD *world;
- {
- register ULONG i, size;
- register OBJECT *p;
- char name[5];
- int depth=0;
-
- if (verbose_flag>1) fprintf(stderr, "OBJ chunk.\n");
- while (len>0) {
- get_name(name, 4, world);
- size = get_ULONG(world);
- len -= 8;
- if (verbose_flag>1) fprintf(stderr, "%s chunk.\n", name);
- if (strcmp(name, "EXTR")==0) {
- p = process_EXTR(size, create_object(), world);
- if (world->curobj) {
- world->curobj->next = p;
- p->parent = world->curobj->parent;
- } else {
- world->object = p;
- p->parent = 0;
- }
- world->curobj = p;
- } else if (strcmp(name, "DESC")==0) {
- p = create_object();
- if (world->num_DESC > world->num_TOBJ+depth) { /* This is a child */
- depth++; /* Down one in the hierarchy */
- world->curobj->child = p;
- p->parent = world->curobj;
- } else {
- if (world->curobj) {
- world->curobj->next = p;
- p->parent = world->curobj->parent;
- } else {
- world->object = p;
- p->parent = 0;
- }
- }
- world->curobj = p;
- process_DESC(size, &p->desc, world);
- } else if (strcmp(name, "TOBJ")==0) {
- world->num_TOBJ++;
- if (world->num_TOBJ > world->num_DESC) {
- fprintf(stderr, "Warning: TOBJ without DESC. Ignored.\n");
- }
- if (world->num_TOBJ+depth > world->num_DESC) { /* Up a level */
- depth--;
- world->curobj=world->curobj->parent;
- }
- } else {
- if (verbose_flag) output_warning(world, "OBJ ", name, size);
- else {
- for (i=size; i--; ) fgetc(world->inp); /* Skip this section */
- }
- }
- if (size&1) { fgetc(world->inp); len--; } /* Skip odd byte */
- len -= size;
- }
- }
-
- OBJECT *load_external_object(filename, mtrx)
- char *filename;
- MTRX *mtrx;
- {
- WORLD *new;
- FILE *newinp;
- register OBJECT *p;
-
- /* Now, load in the external object */
- TRY_EXTR_AGAIN:
- if (!(newinp=fopen(filename, "r"))) {
- fprintf(stderr, "Can't load in EXTR object: '%s'.\n",
- filename);
- fprintf(stderr, "Enter filneame (or CR to abort): "); fflush(stderr);
- fgets(filename, 512, stdin);
- if (!filename[0] || filename[0]=='\n') return(0L);
- goto TRY_EXTR_AGAIN;
- }
- new = read_World(newinp);
- fclose(newinp);
- /* scale, rotate, and translate new object hierarchy */
- for (p=new->object; p; p=p->next)
- move_extr(p, mtrx);
-
- p = new->object;
- free((char*)new);
- return(p);
- }
-
- static OBJECT *process_EXTR(len, obj, world)
- register ULONG len;
- OBJECT *obj;
- WORLD *world;
- {
- register ULONG i, size;
- register EXTR *extr;
- char name[5];
- MTRX *mtrx;
-
- if (!(extr = obj->extr = (EXTR*)malloc(sizeof(EXTR))))
- { OUT_MEM("EXTR"); }
- bzero((char*)extr, sizeof(EXTR));
- mtrx = &extr->mtrx;
- /* Initialize structure */
- mtrx->tran.x = mtrx->tran.y = mtrx->tran.z = 0.0;
- mtrx->scal.x = mtrx->scal.y = mtrx->scal.z = 1.0;
- mtrx->rota1.y = mtrx->rota1.z = 0.0;
- mtrx->rota2.x = mtrx->rota2.z = 0.0;
- mtrx->rota3.x = mtrx->rota3.y = 0.0;
- mtrx->rota1.x = mtrx->rota2.y = mtrx->rota3.z = 1.0;
-
- if (verbose_flag>1) fprintf(stderr, "EXTR chunk.\n");
- while (len>0) {
- get_name(name, 4, world);
- size = get_ULONG(world);
- len -= 8;
- if (verbose_flag>1) fprintf(stderr, "%s chunk.\n", name);
- if (strcmp(name, "MTRX")==0) {
- stuff_XYZ(&mtrx->tran, world);
- stuff_XYZ(&mtrx->scal, world);
- stuff_XYZ(&mtrx->rota1, world);
- stuff_XYZ(&mtrx->rota2, world);
- stuff_XYZ(&mtrx->rota3, world);
- } else
- if (strcmp(name, "LOAD")==0) {
- get_name(extr->filename, 80, world);
- } else {
- if (verbose_flag) output_warning(world, "EXTR ", name, size);
- else {
- for (i=size; i--; ) fgetc(world->inp); /* Skip this section */
- }
- }
- if (size&1) { fgetc(world->inp); len--; } /* Skip odd byte */
- len -= size;
- }
-
- /* Free up unused memory */
- free((char*)obj->extr);
- free((char*)obj);
-
- obj = load_external_object(extr->filename, mtrx);
- return(obj);
- }
-
- static UBYTE defclst[3], defrlst[3], deftlst[3], defspc1[3];
-
- static void malloc_arrays(i, desc)
- register int i;
- register DESC *desc;
- {
- if (!desc->fcount) {
- desc->fcount = i;
- if (!(desc->face=(UWORD*)malloc(3*desc->fcount*sizeof(UWORD))))OUT_MEM((char*)0);
- if (!(desc->clst=(UBYTE*)malloc(3*desc->fcount*sizeof(UBYTE))))OUT_MEM((char*)0);
- if (!(desc->rlst=(UBYTE*)malloc(3*desc->fcount*sizeof(UBYTE))))OUT_MEM((char*)0);
- if (!(desc->tlst=(UBYTE*)malloc(3*desc->fcount*sizeof(UBYTE))))OUT_MEM((char*)0);
- /* Initialize arrays */
- for (i=0; i<3*desc->fcount; i+=3) {
- desc->face[i] = desc->face[i+1] = desc->face[i+2] = 0;
- desc->clst[i] = defclst[0];
- desc->clst[i+1] = defclst[1];
- desc->clst[i+2] = defclst[2];
- desc->rlst[i] = defrlst[0];
- desc->rlst[i+1] = defrlst[1];
- desc->rlst[i+2] = defrlst[2];
- desc->tlst[i] = deftlst[0];
- desc->tlst[i+1] = deftlst[1];
- desc->tlst[i+2] = deftlst[2];
- }
- } else if (i != desc->fcount) {
- fprintf(stderr, "ERROR: FACE and [C|R|T]LST 'Count' values inconsistant.\n");
- OUT_MEM((char*)0);
- }
- }
-
- static void process_DESC(len, orig, world)
- register ULONG len;
- DESC **orig;
- WORLD *world;
- {
- register ULONG size;
- register DESC *desc;
- register int i, j;
- FGRP *fgrp;
- char name[5];
- ULONG ccsize;
-
- if (!(desc = *orig = (DESC*)malloc(sizeof(DESC))))
- { OUT_MEM("DESC"); }
- bzero((char*)desc, sizeof(DESC));
-
- /* Set up defaults: */
- defclst[0] = defclst[1] = defclst[2] = 240; /* TS default */
- defrlst[0] = defrlst[1] = defrlst[2] = 0;
- deftlst[0] = deftlst[1] = deftlst[2] = 0;
- defspc1[0] = defspc1[1] = defspc1[2] = 0;
-
- world->num_DESC++;
-
- if (verbose_flag>1) fprintf(stderr, "DESC chunk.\n");
- while (len>0) {
- get_name(name, 4, world);
- size = get_ULONG(world);
- len -= 8;
- if (verbose_flag>1) fprintf(stderr, "%s chunk.\n", name);
- if (strcmp(name, "NAME")==0) {
- get_name(desc->name, 18, world);
- } else
- if (strcmp(name, "SHAP")==0) {
- if (!desc->shap) {
- if (!(desc->shap=(WORD*)malloc(2*sizeof(WORD))))
- { OUT_MEM("SHAP"); }
- desc->shap[0] = 2; /* TS defaults */
- desc->shap[1] = 0;
- }
- desc->shap[0] = get_UWORD(world);
- desc->shap[1] = get_UWORD(world);
- } else
- if (strcmp(name, "POSI")==0) {
- if (!desc->posi) {
- if (!(desc->posi=(XYZ_st*)malloc(sizeof(XYZ_st))))
- { OUT_MEM("POSI"); }
- }
- stuff_XYZ(desc->posi, world);
- } else
- if (strcmp(name, "AXIS")==0) {
- if (!desc->axis) {
- if (!(desc->axis=(AXIS*)malloc(sizeof(AXIS))))
- { OUT_MEM("AXIS"); }
- bzero((char*)desc->axis, sizeof(AXIS));
- desc->axis->xaxi.x = 1;
- desc->axis->yaxi.y = 1;
- desc->axis->zaxi.z = 1;
- }
- stuff_XYZ(&desc->axis->xaxi, world);
- stuff_XYZ(&desc->axis->yaxi, world);
- stuff_XYZ(&desc->axis->zaxi, world);
- } else
- if (strcmp(name, "SIZE")==0) {
- if (!desc->size) {
- if (!(desc->size=(XYZ_st*)malloc(sizeof(XYZ_st))))
- { OUT_MEM("SIZE"); }
- }
- stuff_XYZ(desc->size, world);
- } else
- if (strcmp(name, "PNTS")==0) {
- i = desc->pcount = get_UWORD(world); /* Number of points */
- if (!(desc->pnts = (XYZ_st*)malloc(desc->pcount*sizeof(XYZ_st))))
- OUT_MEM("PNTS");
- for (j=0; j<i; j++)
- { stuff_XYZ(&desc->pnts[j], world); }
- } else
- if (strcmp(name, "EDGE")==0) {
- i = desc->ecount = get_UWORD(world); /* Number of edges */
- if (!(desc->edge = (UWORD*)malloc(2*desc->ecount*sizeof(UWORD))))
- OUT_MEM("EDGE");
- for (j=0; j<2*i; j++)
- { desc->edge[j] = get_UWORD(world); }
- } else
- if (strcmp(name, "EFLG")==0) { /* An undocumented chunk */
- if (!(desc->eflg = (EFLG*)malloc(sizeof(EFLG))))
- OUT_MEM("EFLG");
- i = desc->eflg->num = get_UWORD(world); /* Number of edge flags */
- if (!(desc->eflg->eflg=(UBYTE*)malloc(desc->eflg->num*sizeof(UBYTE))))
- OUT_MEM("EFLG");
- for (j=0; j<i; j++)
- { desc->eflg->eflg[j] = get_UBYTE(world); }
- } else
- if (strcmp(name, "FACE")==0) {
- i = get_UWORD(world); /* Number of faces */
- malloc_arrays(i, desc);
- for (j=0; j<i; j++) {
- desc->face[3*j] = get_UWORD(world);
- desc->face[3*j+1] = get_UWORD(world);
- desc->face[3*j+2] = get_UWORD(world);
- }
- } else
- if (strcmp(name, "TXT2")==0) {
- for (i=0; i<4 && desc->txt2[i]; i++) ;
- if (i==4) { /* ERROR! */
- fprintf(stderr, "WARNING! More than 4 TXT2 chunks!\n");
- i--;
- }
- if (!(desc->txt2[i] = (TXT2*)malloc(sizeof(TXT2)))) OUT_MEM("TXT2");
- desc->txt2[i]->Flags = get_UWORD(world);
- ccsize = 2;
- stuff_XYZ(&desc->txt2[i]->TAxis.tran, world);
- stuff_XYZ(&desc->txt2[i]->TAxis.rota1, world);
- stuff_XYZ(&desc->txt2[i]->TAxis.rota2, world);
- stuff_XYZ(&desc->txt2[i]->TAxis.rota3, world);
- stuff_XYZ(&desc->txt2[i]->TAxis.scal, world);
- ccsize = ccsize + 60;
- for (j = 0; j < 16; j++) desc->txt2[i]->Params[j] = get_FRACT(world);
- ccsize = ccsize + 64;
- for (j = 0; j < 16; j++) desc->txt2[i]->PFlags[j] = get_UBYTE(world);
- ccsize = ccsize + 16;
- ccsize = ccsize + 17;
- get_name(desc->txt2[i]->SubName, 17, world);
- j = get_UWORD(world);
- ccsize = ccsize + 2 + j;
- desc->txt2[i]->Length = j;
- get_name(desc->txt2[i]->Name, j, world);
- for (j=ccsize; j < size; j++) get_UBYTE(world);
- } else
- #if 0
- if (strcmp(name, "FOR2")==0) { /* Another undocumented chunk */
- newsize = size;
- i = get_UWORD(world); /* NumC */
- newsize -= 2;
- NumC = i;
- fprintf(stderr, "Encountered 'FOR2' chunk...size=%lu\n NumC=%u\n", size, i);
- i = get_UWORD(world); /* NumF */
- newsize -= 2;
- NumF = i;
- fprintf(stderr, " NumF=%u\n", i);
- i = get_UWORD(world); /* Flags */
- newsize -= 2;
- fprintf(stderr, " Flags=%u\n", i);
- i = get_UWORD(world); /* pad */
- newsize -= 2;
- fprintf(stderr, " pad=%u\n", i);
- for (j=0; j<9; j++) fprintf(stderr, " MTRX[%d]=%.12g\n", j, get_FRACT(world));
- newsize -= 36;
- fprintf(stderr, " ShiftX=%.12g ", get_FRACT(world));
- fprintf(stderr, "ShiftY=%.12g ", get_FRACT(world));
- fprintf(stderr, "ShiftZ=%.12g\n", get_FRACT(world));
- newsize -= 12;
- for (j=0; j<NumC+4*NumF; j++) {
- fprintf(stderr, " Point[%d]: X=%.12g ", j, get_FRACT(world));
- fprintf(stderr, "Y=%.12g ", get_FRACT(world));
- fprintf(stderr, "Z=%.12g\n", get_FRACT(world));
- newsize -= 12;
- }
- output_warning(world, "DESC ", "FOR2", newsize);
- } else
- #endif
- if (strcmp(name, "FGRP")==0) { /* Another undocumented chunk */
- if (!(fgrp = (FGRP*)malloc(sizeof(FGRP))))
- OUT_MEM("FGRP");
- i = fgrp->num = get_UWORD(world); /* Number of faces in group */
- if (!(fgrp->face = (UWORD*)malloc(i*sizeof(UWORD))))
- OUT_MEM("FGRP");
- get_name(fgrp->name, 18, world);
- for (j=0; j<i; j++)
- fgrp->face[j] = get_UWORD(world);
- /* Link this new FGRP into list */
- fgrp->next = desc->fgrp;
- desc->fgrp = fgrp;
- } else
- if (strcmp(name, "COLR")==0) {
- if (!desc->colr) {
- if (!(desc->colr = (RGB_st*)malloc(sizeof(RGB_st))))
- { OUT_MEM("COLR"); }
- }
- stuff_RGB((RGB_st*)&defclst[0], world);
- desc->colr->r = defclst[0];
- desc->colr->g = defclst[1];
- desc->colr->b = defclst[2];
- } else
- if (strcmp(name, "REFL")==0) {
- if (!desc->refl) {
- if (!(desc->refl = (RGB_st*)malloc(sizeof(RGB_st))))
- { OUT_MEM("REFL"); }
- }
- stuff_RGB((RGB_st*)&defrlst[0], world);
- desc->refl->r = defrlst[0];
- desc->refl->g = defrlst[1];
- desc->refl->b = defrlst[2];
- } else
- if (strcmp(name, "TRAN")==0) {
- if (!desc->tran) {
- if (!(desc->tran = (RGB_st*)malloc(sizeof(RGB_st))))
- { OUT_MEM("TRAN"); }
- }
- stuff_RGB((RGB_st*)&deftlst[0], world);
- desc->tran->r = deftlst[0];
- desc->tran->g = deftlst[1];
- desc->tran->b = deftlst[2];
- } else
- if (strcmp(name, "SPC1")==0) {
- if (!desc->spc1) {
- if (!(desc->spc1 = (RGB_st*)malloc(sizeof(RGB_st))))
- { OUT_MEM("SPC1"); }
- }
- stuff_RGB((RGB_st*)&defspc1[0], world);
- desc->spc1->r = defspc1[0];
- desc->spc1->g = defspc1[1];
- desc->spc1->b = defspc1[2];
- } else
- if (strcmp(name, "CLST")==0) {
- i = get_UWORD(world); /* Number of faces */
- malloc_arrays(i, desc);
- for (j=0; j<i; j++) {
- desc->clst[3*j+0] = get_UBYTE(world);
- desc->clst[3*j+1] = get_UBYTE(world);
- desc->clst[3*j+2] = get_UBYTE(world);
- }
- } else
- if (strcmp(name, "RLST")==0) {
- i = get_UWORD(world); /* Number of faces */
- malloc_arrays(i, desc);
- for (j=0; j<i; j++) {
- desc->rlst[3*j+0] = get_UBYTE(world);
- desc->rlst[3*j+1] = get_UBYTE(world);
- desc->rlst[3*j+2] = get_UBYTE(world);
- }
- } else
- if (strcmp(name, "TLST")==0) {
- i = get_UWORD(world); /* Number of faces */
- malloc_arrays(i, desc);
- for (j=0; j<i; j++) {
- desc->tlst[3*j+0] = get_UBYTE(world);
- desc->tlst[3*j+1] = get_UBYTE(world);
- desc->tlst[3*j+2] = get_UBYTE(world);
- }
- } else
- if (strcmp(name, "TPAR")==0) {
- if (!desc->tpar) {
- if (!(desc->tpar=(double*)malloc(16*sizeof(double))))
- { OUT_MEM("TPAR"); }
- bzero((char*)desc->tpar, 16*sizeof(double));
- }
- for (i=0; i<16; i++)
- desc->tpar[i] = get_FRACT(world);
- } else
- if (strcmp(name, "SURF")==0) {
- if (!desc->surf) {
- if (!(desc->surf=(UBYTE*)malloc(5*sizeof(UBYTE))))
- { OUT_MEM("SURF"); }
- bzero((char*)desc->surf, 5*sizeof(UBYTE));
- }
- for (i=0; i<5; i++)
- desc->surf[i] = get_BYTE(world);
- } else
- if (strcmp(name, "MTTR")==0) {
- if (!desc->mttr) {
- if (!(desc->mttr=(MTTR*)malloc(sizeof(MTTR))))
- { OUT_MEM("MTTR"); }
- bzero((char*)desc->mttr, sizeof(MTTR));
- }
- desc->mttr->type = get_UBYTE(world);
- desc->mttr->indx = (get_UBYTE(world)/100.0)+1.0;
- } else
- if (strcmp(name, "SPEC")==0) {
- if (!desc->spec) {
- if (!(desc->spec=(UBYTE*)malloc(2*sizeof(UBYTE))))
- { OUT_MEM("SPEC"); }
- bzero((char*)desc->spec, 2*sizeof(UBYTE));
- }
- desc->spec[0] = get_UBYTE(world);
- desc->spec[1] = get_UBYTE(world);
- } else
- if (strcmp(name, "PRP0")==0) {
- if (!desc->prp0) {
- if (!(desc->prp0=(UBYTE*)malloc(6*sizeof(UBYTE))))
- { OUT_MEM("PRP0"); }
- bzero((char*)desc->prp0, 6*sizeof(UBYTE));
- }
- for (i=0; i<6; i++)
- desc->prp0[i] = get_UBYTE(world);
- } else
- if (strcmp(name, "PRP1")==0) {
- if (!desc->prp1) {
- if (!(desc->prp1=(UBYTE*)malloc(8*sizeof(UBYTE))))
- { OUT_MEM("PRP1"); }
- bzero((char*)desc->prp1, 8*sizeof(UBYTE));
- }
- for (i=0; i<8; i++)
- desc->prp1[i] = get_UBYTE(world);
- } else
- if (strcmp(name, "INTS")==0) {
- if (!desc->ints) {
- if (!(desc->ints=(double*)malloc(sizeof(double))))
- { OUT_MEM("INTS"); }
- }
- *desc->ints = get_FRACT(world);
- } else
- if (strcmp(name, "INT1")==0) {
- if (!desc->int1) desc->int1=(XYZ_st*)malloc(sizeof(XYZ_st));
- if (!desc->int1) { OUT_MEM("INT1"); }
- stuff_XYZ(desc->int1, world);
- } else
- if (strcmp(name, "STRY")==0) {
- get_name(desc->stry->path, 18, world);
- stuff_XYZ(&desc->stry->tran, world);
- stuff_XYZ(&desc->stry->rota, world);
- stuff_XYZ(&desc->stry->scal, world);
- desc->stry->info = get_UWORD(world);
- } else {
- if (verbose_flag) output_warning(world, "DESC ", name, size);
- else {
- for (i=size; i--; ) fgetc(world->inp); /* Skip this section */
- }
- }
- if (size&1) { fgetc(world->inp); len--; } /* Skip odd byte */
- len -= size;
- }
- }
-
- /* readistg.c - read an Imagine Stage file
- * - written by Glenn M. Lewis - 8/11/92
- */
-
- static void process_OSIZ();
- static void process_POSN();
- static void process_ALGN();
- static void process_PALN();
- static void process_TALN();
- static void process_PTH2();
- static void process_GLB2();
- static void process_AXIS();
- static void process_LITE();
- static void process_FILE();
- static void process_SOBJ();
-
- WORLD *read_ISTG(file)
- FILE *file;
- {
- register ULONG i, len, size;
- WORLD *world;
- char name[5];
-
- if (!file) return(0L); /* File not open */
-
- if (!(world = (WORLD*)malloc(sizeof(WORLD)))) { OUT_MEM("WORLD"); }
- bzero((char*)world, sizeof(WORLD));
- world->inp = file;
-
- if (!already_read_header) {
- /* Parse the IFF ISTG file */
- get_name(name, 4, world);
- if (strcmp(name, "FORM") != 0) {
- fprintf(stderr, "ERROR: Input is not an IFF file.\n"); exit(-1); }
- if (!(len = get_ULONG(world))) {
- fprintf(stderr, "ERROR: Bad FORM length in IFF file.\n"); exit(-1); }
- get_name(name, 4, world);
- if (strcmp(name, "ISTG") != 0) {
- fprintf(stderr, "ERROR: IFF file is not a ISTG file.\n"); exit(-1); }
- } else {
- len = (header_storage[4]<<24) | (header_storage[5]<<16) |
- (header_storage[6]<< 8) | (header_storage[7] );
- already_read_header = 0;
- }
- len -= 4;
-
- /* Allocate the ISTG structure */
- if (!(world->istg = (ISTG*)malloc(sizeof(ISTG)))) { OUT_MEM("ISTG"); }
- bzero((char*)world->istg, sizeof(ISTG));
-
- /* Here is the main loop: */
- while (len>0) {
- get_name(name, 4, world);
- size = get_ULONG(world);
- len -= 8;
- if (strcmp(name, "MAXF")==0) world->istg->maxf = get_UWORD(world);
- else
- if (strcmp(name, "SOBJ")==0) process_SOBJ(size, world);
- else {
- if (verbose_flag) output_warning(world, "ISTG ", name, size);
- else {
- for (i=size; i--; ) fgetc(world->inp); /* Skip this section */
- }
- }
- if (size&1) { fgetc(world->inp); len--; } /* Skip odd byte */
- len -= size;
- }
-
- /* All done. */
- return(world);
- }
-
- SOBJ *add_SOBJ(istg) /* to tail of ISTG's SOBJ list */
- ISTG *istg;
- {
- SOBJ *new;
-
- if (!(new = (SOBJ*)malloc(sizeof(SOBJ)))) OUT_MEM("SOBJ");
- bzero((char*)new, sizeof(SOBJ));
-
- if (!istg->head) {
- istg->head = istg->tail = new;
- return(new);
- }
- /* Add this SOBJ to the tail */
- new->prev = istg->tail;
- istg->tail->next = new;
- istg->tail = new;
- return(new);
- }
-
- static void process_SOBJ(len, world)
- register ULONG len;
- WORLD *world;
- {
- register ULONG i, size;
- char name[5];
- SOBJ *sobj;
-
- if (verbose_flag>1) fprintf(stderr, "SOBJ chunk.\n");
- /* Add another SOBJ to the current ISTG list */
- sobj = add_SOBJ(world->istg);
- while (len>0) {
- get_name(name, 4, world);
- size = get_ULONG(world);
- len -= 8;
- if (verbose_flag>1) fprintf(stderr, "%s chunk.\n", name);
- if (strcmp(name, "NAME")==0) { get_name(sobj->name, (int)size, world);
- } else if (strcmp(name, "STGF")==0) { sobj->stgf = get_UWORD(world);
- } else if (strcmp(name, "OSIZ")==0) { process_OSIZ(size, sobj, world);
- } else if (strcmp(name, "POSN")==0) { process_POSN(size, sobj, world);
- } else if (strcmp(name, "ALGN")==0) { process_ALGN(size, sobj, world);
- } else if (strcmp(name, "PALN")==0) { process_PALN(size, sobj, world);
- } else if (strcmp(name, "TALN")==0) { process_TALN(size, sobj, world);
- } else if (strcmp(name, "PTH2")==0) { process_PTH2(size, sobj, world);
- } else if (strcmp(name, "GLB2")==0) { process_GLB2(size, sobj, world);
- } else if (strcmp(name, "AXIS")==0) { process_AXIS(size, sobj, world);
- } else if (strcmp(name, "LITE")==0) { process_LITE(size, sobj, world);
- } else if (strcmp(name, "FILE")==0) { process_FILE(size, sobj, world);
- } else {
- if (verbose_flag) output_warning(world, "SOBJ ", name, size);
- else {
- for (i=size; i--; ) fgetc(world->inp); /* Skip this section */
- }
- }
- if (size&1) { fgetc(world->inp); len--; } /* Skip odd byte */
- len -= size;
- }
- }
-
- static void process_OSIZ(size, sobj, world)
- ULONG size;
- SOBJ *sobj;
- WORLD *world;
- {
- register OSIZ *osiz;
-
- if (!(osiz = (OSIZ*)malloc(sizeof(OSIZ)))) OUT_MEM("OSIZ");
- osiz->flags = get_UWORD(world);
- osiz->start = get_UWORD(world);
- osiz->stop = get_UWORD(world);
- stuff_XYZ(&osiz->size, world);
- insert_into_sorted_list((PALN**)&sobj->osiz, (PALN*)osiz);
- }
-
- static void process_POSN(size, sobj, world)
- ULONG size;
- SOBJ *sobj;
- WORLD *world;
- {
- register POSN *posn;
-
- if (!(posn = (POSN*)malloc(sizeof(POSN)))) OUT_MEM("POSN");
- posn->flags = get_UWORD(world);
- posn->start = get_UWORD(world);
- posn->stop = get_UWORD(world);
- stuff_XYZ(&posn->posn, world);
- insert_into_sorted_list((PALN**)&sobj->posn, (PALN*)posn);
- }
-
- static void process_ALGN(size, sobj, world)
- ULONG size;
- SOBJ *sobj;
- WORLD *world;
- {
- register ALGN *algn;
-
- if (!(algn = (ALGN*)malloc(sizeof(ALGN)))) OUT_MEM("ALGN");
- algn->flags = get_UWORD(world);
- algn->start = get_UWORD(world);
- algn->stop = get_UWORD(world);
- stuff_XYZ(&algn->algn, world);
- insert_into_sorted_list((PALN**)&sobj->algn, (PALN*)algn);
- }
-
- static void process_PALN(size, sobj, world)
- ULONG size;
- SOBJ *sobj;
- WORLD *world;
- {
- register PALN *paln;
-
- if (!(paln = (PALN*)malloc(sizeof(PALN)))) OUT_MEM("PALN");
- paln->flags = get_UWORD(world);
- paln->start = get_UWORD(world);
- paln->stop = get_UWORD(world);
- insert_into_sorted_list(&sobj->paln, paln);
- }
-
- static void process_TALN(size, sobj, world)
- ULONG size;
- SOBJ *sobj;
- WORLD *world;
- {
- register TALN *taln;
-
- if (!(taln = (TALN*)malloc(sizeof(TALN)))) OUT_MEM("TALN");
- bzero((char*)taln, sizeof(TALN));
- taln->flags = get_UWORD(world);
- taln->start = get_UWORD(world);
- taln->stop = get_UWORD(world);
- taln->initial_y = get_FRACT(world);
- taln->final_y = get_FRACT(world);
- size -= 15L;
- /* BCPL string... byte followed by string, followed by zero */
- get_UBYTE(world);
- if (size)
- get_name(taln->trackobj, (int)size, world);
- insert_into_sorted_list((PALN**)&sobj->taln, (PALN*)taln);
- }
-
- static void process_PTH2(size, sobj, world)
- ULONG size;
- SOBJ *sobj;
- WORLD *world;
- {
- register PTH2 *pth2;
-
- if (!(pth2 = (PTH2*)malloc(sizeof(PTH2)))) OUT_MEM("PTH2");
- bzero((char*)pth2, sizeof(PTH2));
- pth2->flags = get_UWORD(world);
- pth2->start = get_UWORD(world);
- pth2->stop = get_UWORD(world);
- pth2->acceleration_frames = get_ULONG(world);
- pth2->start_speed = get_FRACT(world);
- pth2->deacceleration_frames = get_ULONG(world);
- pth2->end_speed = get_FRACT(world);
- size -= 23L;
- /* BCPL string... byte followed by string, followed by zero */
- get_UBYTE(world);
- if (size)
- get_name(pth2->path, (int)size, world);
- insert_into_sorted_list((PALN**)&sobj->pth2, (PALN*)pth2);
- }
-
- static void process_GLB2(size, sobj, world)
- ULONG size;
- SOBJ *sobj;
- WORLD *world;
- {
- register GLB2 *glb2;
-
- if (!(glb2 = (GLB2*)malloc(sizeof(GLB2)))) OUT_MEM("GLB2");
- bzero((char*)glb2, sizeof(GLB2));
- glb2->flags = get_UWORD(world);
- glb2->start = get_UWORD(world);
- glb2->stop = get_UWORD(world);
- glb2->sky_blending = get_ULONG(world);
- glb2->starfield = get_FRACT(world);
- glb2->transition = get_ULONG(world);
- /* The following are FRACTional colors */
- stuff_XYZ(&glb2->ambient, world);
- stuff_XYZ(&glb2->horizon, world);
- stuff_XYZ(&glb2->zenith1, world);
- stuff_XYZ(&glb2->zenith2, world);
- stuff_XYZ(&glb2->fog_color, world);
- glb2->fog_bottom = get_FRACT(world);
- glb2->fog_top = get_FRACT(world);
- glb2->fog_length = get_FRACT(world);
- glb2->brush_seq = get_ULONG(world);
- glb2->backdrop_seq = get_ULONG(world);
- get_name(glb2->backdrop, 256, world); /* Fixed size */
- size -= 355L;
- /* BCPL string... byte followed by string, followed by zero */
- get_UBYTE(world);
- if (size)
- get_name(glb2->globalbrush, (int)size, world); /* Var. size */
- insert_into_sorted_list((PALN**)&sobj->glb2, (PALN*)glb2);
- }
-
- static void process_AXIS(size, sobj, world)
- ULONG size;
- SOBJ *sobj;
- WORLD *world;
- {
- register SAXIS *axis;
-
- if (!(axis = (SAXIS*)malloc(sizeof(SAXIS)))) OUT_MEM("SAXIS");
- axis->flags = get_UWORD(world);
- axis->start = get_UWORD(world);
- axis->stop = get_UWORD(world);
- insert_into_sorted_list((PALN**)&sobj->axis, (PALN*)axis);
- }
-
- static void process_LITE(size, sobj, world)
- ULONG size;
- SOBJ *sobj;
- WORLD *world;
- {
- register LITE *lite;
-
- if (!(lite = (LITE*)malloc(sizeof(LITE)))) OUT_MEM("LITE");
- lite->flags = get_UWORD(world);
- lite->start = get_UWORD(world);
- lite->stop = get_UWORD(world);
- /* The following is a FRACTional color */
- stuff_XYZ(&lite->color, world);
- lite->transition = get_ULONG(world);
- insert_into_sorted_list((PALN**)&sobj->lite, (PALN*)lite);
- }
-
- static void process_FILE(size, sobj, world)
- ULONG size;
- SOBJ *sobj;
- WORLD *world;
- {
- register SFILE *file;
-
- if (!(file = (SFILE*)malloc(sizeof(SFILE)))) OUT_MEM("SFILE");
- bzero((char*)file, sizeof(SFILE));
- file->flags = get_UWORD(world);
- file->start = get_UWORD(world);
- file->stop = get_UWORD(world);
- file->cycles_to_perform = get_FRACT(world);
- file->initial_cycle_phase = get_FRACT(world);
- file->transition = get_ULONG(world);
- size -= 19L;
- /* BCPL string... byte followed by string, followed by zero */
- get_UBYTE(world);
- if (size)
- get_name(file->object_description, (int)size, world);
- insert_into_sorted_list((PALN**)&sobj->file, (PALN*)file);
- }
-
- /* We use "PALN" here, even though this routine inserts all SOBJ sub-types
- * into their proper list, because all be need is "START" and "STOP"
- * information, and "PALN" is the minimal structure that provides this
- */
- void insert_into_sorted_list(ppaln, paln)
- PALN **ppaln, *paln;
- {
- register PALN *p;
-
- if (!*ppaln) { *ppaln = paln; return; } /* First in list */
- /* Now search through the list and insert in the proper place */
- for (p= *ppaln; p; p=p->next) {
- if (paln->start == p->start ||
- paln->start == p->stop ||
- paln->stop == p->start ||
- paln->stop == p->stop) {
- fprintf(stderr, "WARNING!!! start and stop times collide! (%u-%u) vs (%u-%u)\n",
- paln->start, paln->stop, p->start, p->stop);
- }
- if (paln->stop < p->start) { /* Insert the item before this one */
- paln->prev = p->prev;
- paln->next = p;
- p->prev = paln;
- if (p == *ppaln) { *ppaln = paln; } /* New head of list */
- return;
- }
- if (!p->next) { /* Insert after this item */
- p->next = paln;
- paln->prev = p;
- return;
- }
- }
- /* Never will reach here! */
- }
-
- /* Find the last existing key frame that would be applicable for "frame" */
- void delete_unused_frames(orig, frame)
- PALN **orig;
- {
- register PALN *p;
- PALN *p2;
-
- for (p= *orig; p; ) {
- if (frame>=p->start && frame<=p->stop) return; /* It falls within this keyframe */
- if (frame>=p->stop && (!p->next || (p->next && frame<p->next->start))) return; /* This is the one! */
- /* Otherwise, delete it */
- if (p->next) p->next->prev = p->prev;
- if (p->prev) p->prev->next = p->next;
- if (p== *orig) *orig = p->next;
- p2 = p->next;
- free(p);
- p = p2;
- }
- }
-
- static void mtrx_ident(mtrx)
- register MTRX *mtrx;
- {
- mtrx->tran.x = mtrx->tran.y = mtrx->tran.z = 0.0;
- mtrx->scal.x = mtrx->scal.y = mtrx->scal.z = 1.0;
- mtrx->rota1.y = mtrx->rota1.z = 0.0;
- mtrx->rota2.x = mtrx->rota2.z = 0.0;
- mtrx->rota3.x = mtrx->rota3.y = 0.0;
- mtrx->rota1.x = mtrx->rota2.y = mtrx->rota3.z = 1.0;
- }
-
- static void mmultiply(s, d)
- register double *s;
- register double *d;
- {
- register int j;
- double tmp[9];
- tmp[0] = s[0]*d[0] + s[1]*d[3] + s[2]*d[6];
- tmp[1] = s[0]*d[1] + s[1]*d[4] + s[2]*d[7];
- tmp[2] = s[0]*d[2] + s[1]*d[5] + s[2]*d[8];
- tmp[3] = s[3]*d[0] + s[4]*d[3] + s[5]*d[6];
- tmp[4] = s[3]*d[1] + s[4]*d[4] + s[5]*d[7];
- tmp[5] = s[3]*d[2] + s[4]*d[5] + s[5]*d[8];
- tmp[6] = s[6]*d[0] + s[7]*d[3] + s[8]*d[6];
- tmp[7] = s[6]*d[1] + s[7]*d[4] + s[8]*d[7];
- tmp[8] = s[6]*d[2] + s[7]*d[5] + s[8]*d[8];
- for (j = 9; j--; ) d[j] = tmp[j];
- }
-
- /*
- Matrix Inversion
- by Richard Carling
- from "Graphics Gems", Academic Press, 1990
- tweaked heavily by Glenn M. Lewis to not require "GraphicsGems.h" and
- to work only on 3x3 matrices
- */
-
-
- #define SMALL_NUMBER 1.e-8
- #define det2x2(a,b,c,d) ((a)*(d)-(b)*(c))
- #define det3x3(a1, a2, a3, b1, b2, b3, c1, c2, c3) \
- ((a1) * det2x2((b2), (b3), (c2), (c3)) \
- -(b1) * det2x2((a2), (a3), (c2), (c3)) \
- +(c1) * det2x2((a2), (a3), (b2), (b3)))
-
- /*
- * inverse(original_matrix, inverse_matrix)
- *
- * calculate the inverse of a 3x3 matrix
- *
- * -1
- * A = ___1__ adjoint A
- * det A
- */
-
- void inverse(in, out)
- register double *in, *out;
- {
- int i;
- double det;
- void adjoint();
-
- /* calculate the adjoint matrix */
- adjoint(in, out);
- /* calculate the 3x3 determinent
- * if the determinent is zero,
- * then the inverse matrix is not unique.
- */
- det = det3x3(
- in[0], in[1], in[2],
- in[3], in[4], in[5],
- in[6], in[7], in[8]
- );
- if (fabs(det) < SMALL_NUMBER) return; /* non-singular matrix */
- /* scale the adjoint matrix to get the inverse */
- det = 1.0/det;
- for (i=0; i<9; i++) out[i] *= det;
- }
-
- /*
- * adjoint(original_matrix, inverse_matrix)
- *
- * calculate the adjoint of a 4x4 matrix
- *
- * Let a denote the minor determinant of matrix A obtained by
- * ij
- *
- * deleting the ith row and jth column from A.
- *
- * i+j
- * Let b = (-1) a
- * ij ji
- *
- * The matrix B = (b ) is the adjoint of A
- * ij
- */
-
- void adjoint(in, out)
- register double *in, *out;
- {
- /* row column labeling reversed since we transpose rows & columns */
- out[0] = det2x2(in[4], in[7], in[5], in[8]);
- out[4] = - det2x2(in[3], in[6], in[5], in[8]);
- out[6] = det2x2(in[3], in[6], in[4], in[7]);
-
- out[1] = - det2x2(in[1], in[7], in[2], in[8]);
- out[4] = det2x2(in[0], in[6], in[2], in[8]);
- out[7] = - det2x2(in[0], in[6], in[1], in[7]);
-
- out[2] = det2x2(in[1], in[4], in[2], in[5]);
- out[5] = - det2x2(in[0], in[3], in[2], in[5]);
- out[8] = det2x2(in[0], in[3], in[1], in[4]);
- }
-
- OBJECT *load_staging_object(filename, mtrx)
- char *filename;
- MTRX *mtrx;
- {
- WORLD *new;
- FILE *newinp;
- register OBJECT *p;
-
- /* Now, load in the external object */
- TRY_EXTR_AGAIN:
- if (!(newinp=fopen(filename, "r"))) {
- fprintf(stderr, "Can't load in EXTR object: '%s'.\n",
- filename);
- fprintf(stderr, "Enter filneame (or CR to abort): "); fflush(stderr);
- fgets(filename, 512, stdin);
- if (!filename[0] || filename[0]=='\n') return(0L);
- goto TRY_EXTR_AGAIN;
- }
- new = read_World(newinp);
- fclose(newinp);
-
- /* scale, rotate, and translate new object hierarchy */
- /* First, take a look at the root object's size an orientation,
- * and scale all subobjects appropriately
- */
-
- p = new->object;
- if (p) {
- if (p->desc->size) {
- if (p->desc->size->x != 0.0)
- mtrx->scal.x /= p->desc->size->x;
- if (p->desc->size->y != 0.0)
- mtrx->scal.y /= p->desc->size->y;
- if (p->desc->size->z != 0.0)
- mtrx->scal.z /= p->desc->size->z;
- }
- if (p->desc->axis) {
- /* inverse(&p->desc->axis->xaxi.x, &newmtrx.rota1.x); */
- /* mmultiply(&newmtrx.rota1.x, &mtrx->rota1.x); */
- mmultiply(&p->desc->axis->xaxi.x, &mtrx->rota1.x);
- }
- }
- for (p=new->object; p; p=p->next)
- move_extr(p, mtrx);
-
- p = new->object;
- free((char*)new);
- return(p);
- }
-
- void load_staging_frame_objects(world, frame)
- WORLD *world;
- int frame;
- {
- register SOBJ *sobj;
- MTRX mtrx, tmpmtrx;
- OBJECT *obj;
- double angle, sin(), cos();
-
- if (!world) return;
- if (!world->istg) return;
- if (frame<1 || frame>world->istg->maxf) {
- fprintf(stderr, "ERROR: desired frame (%d) is larger than MAXF (%d)\n",
- frame, world->istg->maxf);
- return;
- }
- /* Search through all of the "SOBJ" chunks and load in objects that
- * are active during the specified frame
- */
- for (sobj=world->istg->head; sobj; sobj=sobj->next) {
- /* Easiest method is to simply delete all the information in the SOBJ
- * sub-chunks that does not fall within the specified frame time.
- */
- delete_unused_frames((PALN**)&sobj->osiz, frame); /* Size */
- delete_unused_frames((PALN**)&sobj->posn, frame); /* Position */
- delete_unused_frames((PALN**)&sobj->algn, frame); /* Alignment */
- delete_unused_frames((PALN**)&sobj->paln, frame); /* Path Alignment */
- delete_unused_frames((PALN**)&sobj->taln, frame); /* Track Alignment */
- delete_unused_frames((PALN**)&sobj->pth2, frame); /* Follow Path */
- delete_unused_frames((PALN**)&sobj->glb2, frame); /* Globals */
- delete_unused_frames((PALN**)&sobj->axis, frame); /* Stagefile AXIS */
- delete_unused_frames((PALN**)&sobj->lite, frame); /* Light */
- delete_unused_frames((PALN**)&sobj->file, frame); /* Stage file */
-
- /* Now, we have a list of SOBJ chunks with information for this frame */
- if (!sobj->file) continue; /* No filename information */
-
- /* Initialize transformation matrix structure */
- mtrx_ident(&mtrx);
-
- /* Now modify matrix based upon requested transformations */
- if (sobj->posn) { bcopy((char*)&sobj->posn->posn.x, (char*)&mtrx.tran.x, sizeof(XYZ_st)); }
- if (sobj->osiz) { bcopy((char*)&sobj->osiz->size.x, (char*)&mtrx.scal.x, sizeof(XYZ_st)); }
- if (sobj->algn) {
- /* First Z rotation, then X, then Y */
- if (sobj->algn->algn.z != 0.0) {
- angle = sobj->algn->algn.z * PI / 180.0;
- mtrx_ident(&tmpmtrx); /* Initialize it */
- tmpmtrx.rota1.x = tmpmtrx.rota2.y = cos(angle);
- tmpmtrx.rota2.x = sin(angle);
- tmpmtrx.rota1.y = -tmpmtrx.rota2.x;
- mmultiply(&tmpmtrx.rota1.x, &mtrx.rota1.x);
- } else if (sobj->algn->algn.x != 0.0) {
- angle = sobj->algn->algn.x * PI / 180.0;
- mtrx_ident(&tmpmtrx); /* Initialize it */
- tmpmtrx.rota2.y = tmpmtrx.rota3.z = cos(angle);
- tmpmtrx.rota3.y = sin(angle);
- tmpmtrx.rota2.z = -tmpmtrx.rota3.y;
- mmultiply(&tmpmtrx.rota1.x, &mtrx.rota1.x);
- } else if (sobj->algn->algn.y != 0.0) {
- angle = sobj->algn->algn.y * PI / 180.0;
- mtrx_ident(&tmpmtrx); /* Initialize it */
- tmpmtrx.rota1.x = tmpmtrx.rota3.z = cos(angle);
- tmpmtrx.rota1.z = sin(angle);
- tmpmtrx.rota3.x = -tmpmtrx.rota1.z;
- mmultiply(&tmpmtrx.rota1.x, &mtrx.rota1.x);
- }
- }
- /* Okeydokey... let's load in that object! */
- obj = load_staging_object(sobj->file->object_description, &mtrx);
- if (world->curobj) {
- world->curobj->next = obj;
- obj->parent = world->curobj->parent;
- while (obj->next) {
- obj->next->parent = obj->parent;
- obj = obj->next;
- world->curobj = obj;
- }
- } else {
- world->object = obj;
- obj->parent = 0;
- }
- world->curobj = obj;
- }
- }
-