1 /* $Id: polyobj.c,v 1.20 2004-11-27 12:28:10 btb Exp $ */
3 THE COMPUTER CODE CONTAINED HEREIN IS THE SOLE PROPERTY OF PARALLAX
4 SOFTWARE CORPORATION ("PARALLAX"). PARALLAX, IN DISTRIBUTING THE CODE TO
5 END-USERS, AND SUBJECT TO ALL OF THE TERMS AND CONDITIONS HEREIN, GRANTS A
6 ROYALTY-FREE, PERPETUAL LICENSE TO SUCH END-USERS FOR USE BY SUCH END-USERS
7 IN USING, DISPLAYING, AND CREATING DERIVATIVE WORKS THEREOF, SO LONG AS
8 SUCH USE, DISPLAY OR CREATION IS FOR NON-COMMERCIAL, ROYALTY OR REVENUE
9 FREE PURPOSES. IN NO EVENT SHALL THE END-USER USE THE COMPUTER CODE
10 CONTAINED HEREIN FOR REVENUE-BEARING PURPOSES. THE END-USER UNDERSTANDS
11 AND AGREES TO THE TERMS HEREIN AND ACCEPTS THE SAME BY USE OF THIS FILE.
12 COPYRIGHT 1993-1999 PARALLAX SOFTWARE CORPORATION. ALL RIGHTS RESERVED.
17 * Hacked-in polygon objects
27 static char rcsid[] = "$Id: polyobj.c,v 1.20 2004-11-27 12:28:10 btb Exp $";
34 // -- I hate this warning in make depend! -- #ifdef DRIVE
35 // -- I hate this warning in make depend! -- #include "drive.h"
36 // -- I hate this warning in make depend! -- #else
38 // -- I hate this warning in make depend! -- #endif
70 polymodel Polygon_models[MAX_POLYGON_MODELS]; // = {&bot11,&bot17,&robot_s2,&robot_b2,&bot11,&bot17,&robot_s2,&robot_b2};
72 int N_polygon_models = 0;
74 #define MAX_POLYGON_VECS 1000
75 g3s_point robot_points[MAX_POLYGON_VECS];
77 #define PM_COMPATIBLE_VERSION 6
78 #define PM_OBJFILE_VERSION 8
83 #define MODEL_BUF_SIZE 32768
85 void _pof_cfseek(int len,int type)
88 case SEEK_SET: Pof_addr = len; break;
89 case SEEK_CUR: Pof_addr += len; break;
91 Assert(len <= 0); // seeking from end, better be moving back.
92 Pof_addr = Pof_file_end + len;
96 if (Pof_addr > MODEL_BUF_SIZE)
100 #define pof_cfseek(_buf,_len,_type) _pof_cfseek((_len),(_type))
102 int pof_read_int(ubyte *bufp)
106 i = *((int *) &bufp[Pof_addr]);
110 // if (cfread(&i,sizeof(i),1,f) != 1)
111 // Error("Unexpected end-of-file while reading object");
116 size_t pof_cfread(void *dst, size_t elsize, size_t nelem, ubyte *bufp)
118 if (Pof_addr + nelem*elsize > Pof_file_end)
121 memcpy(dst, &bufp[Pof_addr], elsize*nelem);
123 Pof_addr += elsize*nelem;
125 if (Pof_addr > MODEL_BUF_SIZE)
131 // #define new_read_int(i,f) cfread(&(i),sizeof(i),1,(f))
132 #define new_pof_read_int(i,f) pof_cfread(&(i),sizeof(i),1,(f))
134 short pof_read_short(ubyte *bufp)
138 s = *((short *) &bufp[Pof_addr]);
140 return INTEL_SHORT(s);
141 // if (cfread(&s,sizeof(s),1,f) != 1)
142 // Error("Unexpected end-of-file while reading object");
147 void pof_read_string(char *buf,int max_char, ubyte *bufp)
151 for (i=0; i<max_char; i++) {
152 if ((*buf++ = bufp[Pof_addr++]) == 0)
156 // while (max_char-- && (*buf=cfgetc(f)) != 0) buf++;
160 void pof_read_vecs(vms_vector *vecs,int n,ubyte *bufp)
162 // cfread(vecs,sizeof(vms_vector),n,f);
164 memcpy(vecs, &bufp[Pof_addr], n*sizeof(*vecs));
165 Pof_addr += n*sizeof(*vecs);
167 #ifdef WORDS_BIGENDIAN
169 vms_vector_swap(&vecs[--n]);
172 if (Pof_addr > MODEL_BUF_SIZE)
176 void pof_read_angs(vms_angvec *angs,int n,ubyte *bufp)
178 memcpy(angs, &bufp[Pof_addr], n*sizeof(*angs));
179 Pof_addr += n*sizeof(*angs);
181 #ifdef WORDS_BIGENDIAN
183 vms_angvec_swap(&angs[--n]);
186 if (Pof_addr > MODEL_BUF_SIZE)
190 #define ID_OHDR 0x5244484f // 'RDHO' //Object header
191 #define ID_SOBJ 0x4a424f53 // 'JBOS' //Subobject header
192 #define ID_GUNS 0x534e5547 // 'SNUG' //List of guns on this object
193 #define ID_ANIM 0x4d494e41 // 'MINA' //Animation data
194 #define ID_IDTA 0x41544449 // 'ATDI' //Interpreter data
195 #define ID_TXTR 0x52545854 // 'RTXT' //Texture filename list
198 #define robot_info void
200 vms_angvec anim_angs[N_ANIM_STATES][MAX_SUBMODELS];
202 //set the animation angles for this robot. Gun fields of robot info must
204 void robot_set_angles(robot_info *r,polymodel *pm,vms_angvec angs[N_ANIM_STATES][MAX_SUBMODELS]);
207 #define DEBUG_LEVEL CON_NORMAL
209 #ifdef WORDS_NEED_ALIGNMENT
210 ubyte * old_dest(chunk o) // return where chunk is (in unaligned struct)
212 return o.old_base + INTEL_SHORT(*((short *)(o.old_base + o.offset)));
214 ubyte * new_dest(chunk o) // return where chunk is (in aligned struct)
216 return o.new_base + INTEL_SHORT(*((short *)(o.old_base + o.offset))) + o.correction;
219 * find chunk with smallest address
221 int get_first_chunks_index(chunk *chunk_list, int no_chunks)
223 int i, first_index = 0;
224 Assert(no_chunks >= 1);
225 for (i = 1; i < no_chunks; i++)
226 if (old_dest(chunk_list[i]) < old_dest(chunk_list[first_index]))
230 #define SHIFT_SPACE 500 // increase if insufficent
232 void align_polygon_model_data(polymodel *pm)
235 int total_correction = 0;
236 ubyte *cur_old, *cur_new;
238 chunk ch_list[MAX_CHUNKS];
240 int tmp_size = pm->model_data_size + SHIFT_SPACE;
241 ubyte *tmp = d_malloc(tmp_size); // where we build the aligned version of pm->model_data
244 //start with first chunk (is always aligned!)
245 cur_old = pm->model_data;
247 chunk_len = get_chunks(cur_old, cur_new, ch_list, &no_chunks);
248 memcpy(cur_new, cur_old, chunk_len);
249 while (no_chunks > 0) {
250 int first_index = get_first_chunks_index(ch_list, no_chunks);
251 cur_ch = ch_list[first_index];
252 // remove first chunk from array:
254 for (i = first_index; i < no_chunks; i++)
255 ch_list[i] = ch_list[i + 1];
256 // if (new) address unaligned:
257 if ((u_int32_t)new_dest(cur_ch) % 4L != 0) {
258 // calculate how much to move to be aligned
259 short to_shift = 4 - (u_int32_t)new_dest(cur_ch) % 4L;
260 // correct chunks' addresses
261 cur_ch.correction += to_shift;
262 for (i = 0; i < no_chunks; i++)
263 ch_list[i].correction += to_shift;
264 total_correction += to_shift;
265 Assert((u_int32_t)new_dest(cur_ch) % 4L == 0);
266 Assert(total_correction <= SHIFT_SPACE); // if you get this, increase SHIFT_SPACE
268 //write (corrected) chunk for current chunk:
269 *((short *)(cur_ch.new_base + cur_ch.offset))
270 = INTEL_SHORT(cur_ch.correction
271 + INTEL_SHORT(*((short *)(cur_ch.old_base + cur_ch.offset))));
272 //write (correctly aligned) chunk:
273 cur_old = old_dest(cur_ch);
274 cur_new = new_dest(cur_ch);
275 chunk_len = get_chunks(cur_old, cur_new, ch_list, &no_chunks);
276 memcpy(cur_new, cur_old, chunk_len);
277 //correct submodel_ptr's for pm, too
278 for (i = 0; i < MAX_SUBMODELS; i++)
279 if (pm->model_data + pm->submodel_ptrs[i] >= cur_old
280 && pm->model_data + pm->submodel_ptrs[i] < cur_old + chunk_len)
281 pm->submodel_ptrs[i] += (cur_new - tmp) - (cur_old - pm->model_data);
283 d_free(pm->model_data);
284 pm->model_data_size += total_correction;
285 pm->model_data = d_malloc(pm->model_data_size);
286 Assert(pm->model_data != NULL);
287 memcpy(pm->model_data, tmp, pm->model_data_size);
290 #endif //def WORDS_NEED_ALIGNMENT
292 //reads a binary file containing a 3d model
293 polymodel *read_model_file(polymodel *pm,char *filename,robot_info *r)
297 int id,len, next_chunk;
301 model_buf = (ubyte *)d_malloc( MODEL_BUF_SIZE * sizeof(ubyte) );
303 Error("Can't allocate space to read model %s\n", filename);
305 if ((ifile=cfopen(filename,"rb"))==NULL)
306 Error("Can't open file <%s>",filename);
308 Assert(cfilelength(ifile) <= MODEL_BUF_SIZE);
311 Pof_file_end = cfread(model_buf, 1, cfilelength(ifile), ifile);
314 id = pof_read_int(model_buf);
316 if (id!=0x4f505350) /* 'OPSP' */
317 Error("Bad ID in model file <%s>",filename);
319 version = pof_read_short(model_buf);
321 if (version < PM_COMPATIBLE_VERSION || version > PM_OBJFILE_VERSION)
322 Error("Bad version (%d) in model file <%s>",version,filename);
324 if ( FindArg( "-bspgen" ))
325 printf( "bspgen -c1" );
327 while (new_pof_read_int(id,model_buf) == 1) {
329 //id = pof_read_int(model_buf);
330 len = pof_read_int(model_buf);
331 next_chunk = Pof_addr + len;
335 case ID_OHDR: { //Object header
336 vms_vector pmmin,pmmax;
338 //con_printf(DEBUG_LEVEL, "Got chunk OHDR, len=%d\n",len);
340 pm->n_models = pof_read_int(model_buf);
341 pm->rad = pof_read_int(model_buf);
343 Assert(pm->n_models <= MAX_SUBMODELS);
345 pof_read_vecs(&pmmin,1,model_buf);
346 pof_read_vecs(&pmmax,1,model_buf);
348 if ( FindArg( "-bspgen" )) {
352 vm_vec_sub(&v, &pmmax, &pmmin );
354 if ( v.y > l ) l = v.y;
355 if ( v.z > l ) l = v.z;
357 printf( " -l%.3f", f2fl(l) );
363 case ID_SOBJ: { //Subobject header
368 //con_printf(DEBUG_LEVEL, "Got chunk SOBJ, len=%d\n",len);
370 n = pof_read_short(model_buf);
372 Assert(n < MAX_SUBMODELS);
374 pm->submodel_parents[n] = pof_read_short(model_buf);
376 pof_read_vecs(&pm->submodel_norms[n],1,model_buf);
377 pof_read_vecs(&pm->submodel_pnts[n],1,model_buf);
378 pof_read_vecs(&pm->submodel_offsets[n],1,model_buf);
380 pm->submodel_rads[n] = pof_read_int(model_buf); //radius
382 pm->submodel_ptrs[n] = pof_read_int(model_buf); //offset
389 case ID_GUNS: { //List of guns on this object
391 //con_printf(DEBUG_LEVEL, "Got chunk GUNS, len=%d\n",len);
396 ubyte gun_used[MAX_GUNS];
398 r->n_guns = pof_read_int(model_buf);
403 Assert(r->n_guns <= MAX_GUNS);
405 for (i=0;i<r->n_guns;i++)
408 for (i=0;i<r->n_guns;i++) {
411 id = pof_read_short(model_buf);
412 Assert(id < r->n_guns);
413 Assert(gun_used[id] == 0);
415 r->gun_submodels[id] = pof_read_short(model_buf);
416 Assert(r->gun_submodels[id] != 0xff);
417 pof_read_vecs(&r->gun_points[id],1,model_buf);
420 pof_read_vecs(&gun_dir,1,model_buf);
424 pof_cfseek(model_buf,len,SEEK_CUR);
429 case ID_ANIM: //Animation data
430 //con_printf(DEBUG_LEVEL, "Got chunk ANIM, len=%d\n",len);
437 n_frames = pof_read_short(model_buf);
439 Assert(n_frames == N_ANIM_STATES);
441 for (m=0;m<pm->n_models;m++)
442 for (f=0;f<n_frames;f++)
443 pof_read_angs(&anim_angs[f][m], 1, model_buf);
446 robot_set_angles(r,pm,anim_angs);
450 pof_cfseek(model_buf,len,SEEK_CUR);
455 case ID_TXTR: { //Texture filename list
459 //con_printf(DEBUG_LEVEL, "Got chunk TXTR, len=%d\n",len);
461 n = pof_read_short(model_buf);
462 //con_printf(DEBUG_LEVEL, " num textures = %d\n",n);
464 pof_read_string(name_buf,128,model_buf);
465 //con_printf(DEBUG_LEVEL, "<%s>\n",name_buf);
471 case ID_IDTA: //Interpreter data
472 //con_printf(DEBUG_LEVEL, "Got chunk IDTA, len=%d\n",len);
474 pm->model_data = d_malloc(len);
475 pm->model_data_size = len;
477 pof_cfread(pm->model_data,1,len,model_buf);
482 //con_printf(DEBUG_LEVEL, "Unknown chunk <%c%c%c%c>, len = %d\n",id,id>>8,id>>16,id>>24,len);
483 pof_cfseek(model_buf,len,SEEK_CUR);
487 if ( version >= 8 ) // Version 8 needs 4-byte alignment!!!
488 pof_cfseek(model_buf,next_chunk,SEEK_SET);
491 // for (i=0;i<pm->n_models;i++)
492 // pm->submodel_ptrs[i] += (int) pm->model_data;
494 if ( FindArg( "-bspgen" )) {
495 char *p = strchr( filename, '.' );
501 printf( " %s.3ds\n", filename );
507 #ifdef WORDS_NEED_ALIGNMENT
508 align_polygon_model_data(pm);
510 #ifdef WORDS_BIGENDIAN
511 swap_polygon_model_data(pm->model_data);
513 //verify(pm->model_data);
518 //reads the gun information for a model
519 //fills in arrays gun_points & gun_dirs, returns the number of guns read
520 int read_model_guns(char *filename,vms_vector *gun_points, vms_vector *gun_dirs, int *gun_submodels)
528 model_buf = (ubyte *)d_malloc( MODEL_BUF_SIZE * sizeof(ubyte) );
530 Error("Can't allocate space to read model %s\n", filename);
532 if ((ifile=cfopen(filename,"rb"))==NULL)
533 Error("Can't open file <%s>",filename);
535 Assert(cfilelength(ifile) <= MODEL_BUF_SIZE);
538 Pof_file_end = cfread(model_buf, 1, cfilelength(ifile), ifile);
541 id = pof_read_int(model_buf);
543 if (id!=0x4f505350) /* 'OPSP' */
544 Error("Bad ID in model file <%s>",filename);
546 version = pof_read_short(model_buf);
548 Assert(version >= 7); //must be 7 or higher for this data
550 if (version < PM_COMPATIBLE_VERSION || version > PM_OBJFILE_VERSION)
551 Error("Bad version (%d) in model file <%s>",version,filename);
553 while (new_pof_read_int(id,model_buf) == 1) {
555 //id = pof_read_int(model_buf);
556 len = pof_read_int(model_buf);
558 if (id == ID_GUNS) { //List of guns on this object
560 //con_printf(DEBUG_LEVEL, "Got chunk GUNS, len=%d\n",len);
564 n_guns = pof_read_int(model_buf);
566 for (i=0;i<n_guns;i++) {
569 id = pof_read_short(model_buf);
570 sm = pof_read_short(model_buf);
572 gun_submodels[id] = sm;
574 Error("Invalid gun submodel in file <%s>",filename);
575 pof_read_vecs(&gun_points[id],1,model_buf);
577 pof_read_vecs(&gun_dirs[id],1,model_buf);
582 pof_cfseek(model_buf,len,SEEK_CUR);
591 //free up a model, getting rid of all its memory
592 void free_model(polymodel *po)
594 d_free(po->model_data);
597 grs_bitmap *texture_list[MAX_POLYOBJ_TEXTURES];
598 bitmap_index texture_list_index[MAX_POLYOBJ_TEXTURES];
600 int Simple_model_threshhold_scale=5; //switch when this times radius far away
603 //draw a polygon model
605 void draw_polygon_model(vms_vector *pos,vms_matrix *orient,vms_angvec *anim_angles,int model_num,int flags,fix light,fix *glow_values,bitmap_index alt_textures[])
609 PA_DFX (int save_light);
611 Assert(model_num < N_polygon_models);
613 po=&Polygon_models[model_num];
615 //check if should use simple model
616 if (po->simpler_model ) //must have a simpler model
617 if (flags==0) //can't switch if this is debris
618 //!!if (!alt_textures) { //alternate textures might not match
619 //alt textures might not match, but in the one case we're using this
620 //for on 11/14/94, they do match. So we leave it in.
625 depth = g3_calc_point_depth(pos); //gets 3d depth
627 while (po->simpler_model && depth > cnt++ * Simple_model_threshhold_scale * po->rad)
628 po = &Polygon_models[po->simpler_model-1];
633 for (i=0;i<po->n_textures;i++) {
634 texture_list_index[i] = alt_textures[i];
635 texture_list[i] = &GameBitmaps[alt_textures[i].index];
638 texture_list[i]->bm_handle = texture_list_index[i].index;
644 for (i=0;i<po->n_textures;i++) {
645 texture_list_index[i] = ObjBitmaps[ObjBitmapPtrs[po->first_texture+i]];
646 texture_list[i] = &GameBitmaps[ObjBitmaps[ObjBitmapPtrs[po->first_texture+i]].index];
649 texture_list[i]->bm_handle = texture_list_index[i].index;
654 #ifdef PIGGY_USE_PAGING
655 // Make sure the textures for this object are paged in...
656 piggy_page_flushed = 0;
657 for (i=0;i<po->n_textures;i++)
658 PIGGY_PAGE_IN( texture_list_index[i] );
659 // Hmmm... cache got flushed in the middle of paging all these in,
660 // so we need to reread them all in.
661 if (piggy_page_flushed) {
662 piggy_page_flushed = 0;
663 for (i=0;i<po->n_textures;i++)
664 PIGGY_PAGE_IN( texture_list_index[i] );
666 // Make sure that they can all fit in memory.
667 Assert( piggy_page_flushed == 0 );
670 g3_start_instance_matrix(pos,orient);
672 g3_set_interp_points(robot_points);
675 _3dfx_rendering_poly_obj = 1;
677 PA_DFX(save_light = Lighting_on);
678 PA_DFX(Lighting_on = 0);
680 if (flags == 0) //draw entire object
682 g3_draw_polygon_model(po->model_data,texture_list,anim_angles,light,glow_values);
687 for (i=0;flags;flags>>=1,i++)
691 Assert(i < po->n_models);
693 //if submodel, rotate around its center point, not pivot point
695 vm_vec_avg(&ofs,&po->submodel_mins[i],&po->submodel_maxs[i]);
697 g3_start_instance_matrix(&ofs,NULL);
699 g3_draw_polygon_model(&po->model_data[po->submodel_ptrs[i]],texture_list,anim_angles,light,glow_values);
708 _3dfx_rendering_poly_obj = 0;
711 PA_DFX (Lighting_on = save_light);
716 void free_polygon_models()
720 for (i=0;i<N_polygon_models;i++) {
721 free_model(&Polygon_models[i]);
726 void polyobj_find_min_max(polymodel *pm)
732 vms_vector *big_mn,*big_mx;
737 for (m=0;m<pm->n_models;m++) {
738 vms_vector *mn,*mx,*ofs;
740 mn = &pm->submodel_mins[m];
741 mx = &pm->submodel_maxs[m];
742 ofs= &pm->submodel_offsets[m];
744 data = (ushort *)&pm->model_data[pm->submodel_ptrs[m]];
748 Assert(type == 7 || type == 1);
753 data+=2; //skip start & pad
755 vp = (vms_vector *) data;
757 *mn = *mx = *vp++; nverts--;
760 *big_mn = *big_mx = *mn;
763 if (vp->x > mx->x) mx->x = vp->x;
764 if (vp->y > mx->y) mx->y = vp->y;
765 if (vp->z > mx->z) mx->z = vp->z;
767 if (vp->x < mn->x) mn->x = vp->x;
768 if (vp->y < mn->y) mn->y = vp->y;
769 if (vp->z < mn->z) mn->z = vp->z;
771 if (vp->x+ofs->x > big_mx->x) big_mx->x = vp->x+ofs->x;
772 if (vp->y+ofs->y > big_mx->y) big_mx->y = vp->y+ofs->y;
773 if (vp->z+ofs->z > big_mx->z) big_mx->z = vp->z+ofs->z;
775 if (vp->x+ofs->x < big_mn->x) big_mn->x = vp->x+ofs->x;
776 if (vp->y+ofs->y < big_mn->y) big_mn->y = vp->y+ofs->y;
777 if (vp->z+ofs->z < big_mn->z) big_mn->z = vp->z+ofs->z;
782 // printf("Submodel %d: (%8x,%8x) (%8x,%8x) (%8x,%8x)\n",m,mn->x,mx->x,mn->y,mx->y,mn->z,mx->z);
785 // printf("Whole model: (%8x,%8x) (%8x,%8x) (%8x,%8x)\n",big_mn->x,big_mx->x,big_mn->y,big_mx->y,big_mn->z,big_mx->z);
789 extern short highest_texture_num; //from the 3d
791 char Pof_names[MAX_POLYGON_MODELS][FILENAME_LEN];
793 //returns the number of this model
795 int load_polygon_model(char *filename,int n_textures,int first_texture,robot_info *r)
797 int load_polygon_model(char *filename,int n_textures,grs_bitmap ***textures)
804 Assert(N_polygon_models < MAX_POLYGON_MODELS);
805 Assert(n_textures < MAX_POLYOBJ_TEXTURES);
807 // MK was real tired of those useless, slow mprintfs...
808 if (N_polygon_models > MAX_POLYGON_MODELS - 10)
809 mprintf(( 0, "Used %d/%d polygon model slots\n", N_polygon_models+1, MAX_POLYGON_MODELS ));
811 Assert(strlen(filename) <= 12);
812 strcpy(Pof_names[N_polygon_models],filename);
814 read_model_file(&Polygon_models[N_polygon_models],filename,r);
816 polyobj_find_min_max(&Polygon_models[N_polygon_models]);
818 g3_init_polygon_model(Polygon_models[N_polygon_models].model_data);
820 if (highest_texture_num+1 != n_textures)
821 Error("Model <%s> references %d textures but specifies %d.",filename,highest_texture_num+1,n_textures);
823 Polygon_models[N_polygon_models].n_textures = n_textures;
824 Polygon_models[N_polygon_models].first_texture = first_texture;
825 Polygon_models[N_polygon_models].simpler_model = 0;
827 // Assert(polygon_models[N_polygon_models]!=NULL);
831 return N_polygon_models-1;
836 void init_polygon_models()
838 N_polygon_models = 0;
840 atexit((void (*)())free_polygon_models);
844 //compare against this size when figuring how far to place eye for picture
845 #define BASE_MODEL_SIZE 0x28000
847 #define DEFAULT_VIEW_DIST 0x60000
849 //draws the given model in the current canvas. The distance is set to
850 //more-or-less fill the canvas. Note that this routine actually renders
851 //into an off-screen canvas that it creates, then copies to the current
853 void draw_model_picture(int mn,vms_angvec *orient_angles)
855 vms_vector temp_pos=ZERO_VECTOR;
856 vms_matrix temp_orient = IDENTITY_MATRIX;
858 grs_canvas *save_canv = grd_curcanv,*temp_canv;
861 Assert(mn>=0 && mn<N_polygon_models);
864 ogl_start_offscreen_render(0, 0, grd_curcanv->cv_bitmap.bm_w, grd_curcanv->cv_bitmap.bm_h);
866 temp_canv = gr_create_canvas(save_canv->cv_bitmap.bm_w,save_canv->cv_bitmap.bm_h);
867 gr_set_current_canvas(temp_canv);
869 gr_clear_canvas( BM_XRGB(0,0,0) );
872 g3_set_view_matrix(&temp_pos,&temp_orient,0x9000);
874 if (Polygon_models[mn].rad != 0)
875 temp_pos.z = fixmuldiv(DEFAULT_VIEW_DIST,Polygon_models[mn].rad,BASE_MODEL_SIZE);
877 temp_pos.z = DEFAULT_VIEW_DIST;
879 vm_angles_2_matrix(&temp_orient, orient_angles);
881 PA_DFX(save_light = Lighting_on);
882 PA_DFX(Lighting_on = 0);
883 draw_polygon_model(&temp_pos,&temp_orient,NULL,mn,0,f1_0,NULL,NULL);
884 PA_DFX (Lighting_on = save_light);
889 ogl_end_offscreen_render();
891 gr_set_current_canvas(save_canv);
893 gr_bitmap(0,0,&temp_canv->cv_bitmap);
895 gr_free_canvas(temp_canv);
901 * reads a polymodel structure from a CFILE
903 extern void polymodel_read(polymodel *pm, CFILE *fp)
907 pm->n_models = cfile_read_int(fp);
908 pm->model_data_size = cfile_read_int(fp);
909 pm->model_data = (ubyte *)cfile_read_int(fp); // garbage, read it anyway just for consistency
910 for (i = 0; i < MAX_SUBMODELS; i++)
911 pm->submodel_ptrs[i] = cfile_read_int(fp);
912 for (i = 0; i < MAX_SUBMODELS; i++)
913 cfile_read_vector(&(pm->submodel_offsets[i]), fp);
914 for (i = 0; i < MAX_SUBMODELS; i++)
915 cfile_read_vector(&(pm->submodel_norms[i]), fp);
916 for (i = 0; i < MAX_SUBMODELS; i++)
917 cfile_read_vector(&(pm->submodel_pnts[i]), fp);
918 for (i = 0; i < MAX_SUBMODELS; i++)
919 pm->submodel_rads[i] = cfile_read_fix(fp);
920 cfread(pm->submodel_parents, MAX_SUBMODELS, 1, fp);
921 for (i = 0; i < MAX_SUBMODELS; i++)
922 cfile_read_vector(&(pm->submodel_mins[i]), fp);
923 for (i = 0; i < MAX_SUBMODELS; i++)
924 cfile_read_vector(&(pm->submodel_maxs[i]), fp);
925 cfile_read_vector(&(pm->mins), fp);
926 cfile_read_vector(&(pm->maxs), fp);
927 pm->rad = cfile_read_fix(fp);
928 pm->n_textures = cfile_read_byte(fp);
929 pm->first_texture = cfile_read_short(fp);
930 pm->simpler_model = cfile_read_byte(fp);
934 * reads n polymodel structs from a CFILE
936 extern int polymodel_read_n(polymodel *pm, int n, CFILE *fp)
940 for (i = 0; i < n; i++) {
941 pm[i].n_models = cfile_read_int(fp);
942 pm[i].model_data_size = cfile_read_int(fp);
943 pm->model_data = (ubyte *)cfile_read_int(fp); // garbage, read it anyway just for consistency
944 for (j = 0; j < MAX_SUBMODELS; j++)
945 pm[i].submodel_ptrs[j] = cfile_read_int(fp);
946 for (j = 0; j < MAX_SUBMODELS; j++)
947 cfile_read_vector(&(pm[i].submodel_offsets[j]), fp);
948 for (j = 0; j < MAX_SUBMODELS; j++)
949 cfile_read_vector(&(pm[i].submodel_norms[j]), fp);
950 for (j = 0; j < MAX_SUBMODELS; j++)
951 cfile_read_vector(&(pm[i].submodel_pnts[j]), fp);
952 for (j = 0; j < MAX_SUBMODELS; j++)
953 pm[i].submodel_rads[j] = cfile_read_fix(fp);
954 cfread(pm[i].submodel_parents, MAX_SUBMODELS, 1, fp);
955 for (j = 0; j < MAX_SUBMODELS; j++)
956 cfile_read_vector(&(pm[i].submodel_mins[j]), fp);
957 for (j = 0; j < MAX_SUBMODELS; j++)
958 cfile_read_vector(&(pm[i].submodel_maxs[j]), fp);
959 cfile_read_vector(&(pm[i].mins), fp);
960 cfile_read_vector(&(pm[i].maxs), fp);
961 pm[i].rad = cfile_read_fix(fp);
962 pm[i].n_textures = cfile_read_byte(fp);
963 pm[i].first_texture = cfile_read_short(fp);
964 pm[i].simpler_model = cfile_read_byte(fp);
972 * routine which allocates, reads, and inits a polymodel's model_data
974 void polygon_model_data_read(polymodel *pm, CFILE *fp)
976 pm->model_data = d_malloc(pm->model_data_size);
977 Assert(pm->model_data != NULL);
978 cfread(pm->model_data, sizeof(ubyte), pm->model_data_size, fp );
979 #ifdef WORDS_NEED_ALIGNMENT
980 align_polygon_model_data(pm);
982 #ifdef WORDS_BIGENDIAN
983 swap_polygon_model_data(pm->model_data);
985 //verify(pm->model_data);
986 g3_init_polygon_model(pm->model_data);