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Diffstat (limited to 'common/l3dslib.c')
| -rw-r--r-- | common/l3dslib.c | 300 |
1 files changed, 0 insertions, 300 deletions
diff --git a/common/l3dslib.c b/common/l3dslib.c deleted file mode 100644 index 1499e75..0000000 --- a/common/l3dslib.c +++ /dev/null @@ -1,300 +0,0 @@ -/* -=========================================================================== -Copyright (C) 1999-2005 Id Software, Inc. - -This file is part of Quake III Arena source code. - -Quake III Arena source code is free software; you can redistribute it -and/or modify it under the terms of the GNU General Public License as -published by the Free Software Foundation; either version 2 of the License, -or (at your option) any later version. - -Quake III Arena source code is distributed in the hope that it will be -useful, but WITHOUT ANY WARRANTY; without even the implied warranty of -MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -GNU General Public License for more details. - -You should have received a copy of the GNU General Public License -along with Foobar; if not, write to the Free Software -Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA -=========================================================================== -*/ -// -// l3dslib.c: library for loading triangles from an Alias triangle file -// - -#include <stdio.h> -#include "cmdlib.h" -#include "mathlib.h" -#include "trilib.h" -#include "l3dslib.h" - -#define MAIN3DS 0x4D4D -#define EDIT3DS 0x3D3D // this is the start of the editor config -#define EDIT_OBJECT 0x4000 -#define OBJ_TRIMESH 0x4100 -#define TRI_VERTEXL 0x4110 -#define TRI_FACEL1 0x4120 - -#define MAXVERTS 2000 - -typedef struct { - int v[4]; -} tri; - -float fverts[MAXVERTS][3]; -tri tris[MAXTRIANGLES]; - -int bytesread, level, numtris, totaltris; -int vertsfound, trisfound; - -triangle_t *ptri; - - -// Alias stores triangles as 3 explicit vertices in .tri files, so even though we -// start out with a vertex pool and vertex indices for triangles, we have to convert -// to raw, explicit triangles -void StoreAliasTriangles (void) -{ - int i, j, k; - - if ((totaltris + numtris) > MAXTRIANGLES) - Error ("Error: Too many triangles"); - - for (i=0; i<numtris ; i++) - { - for (j=0 ; j<3 ; j++) - { - for (k=0 ; k<3 ; k++) - { - ptri[i+totaltris].verts[j][k] = fverts[tris[i].v[j]][k]; - } - } - } - - totaltris += numtris; - numtris = 0; - vertsfound = 0; - trisfound = 0; -} - - -int ParseVertexL (FILE *input) -{ - int i, j, startbytesread, numverts; - unsigned short tshort; - - if (vertsfound) - Error ("Error: Multiple vertex chunks"); - - vertsfound = 1; - startbytesread = bytesread; - - if (feof(input)) - Error ("Error: unexpected end of file"); - - fread(&tshort, sizeof(tshort), 1, input); - bytesread += sizeof(tshort); - numverts = (int)tshort; - - if (numverts > MAXVERTS) - Error ("Error: Too many vertices"); - - for (i=0 ; i<numverts ; i++) - { - for (j=0 ; j<3 ; j++) - { - if (feof(input)) - Error ("Error: unexpected end of file"); - - fread(&fverts[i][j], sizeof(float), 1, input); - bytesread += sizeof(float); - } - } - - if (vertsfound && trisfound) - StoreAliasTriangles (); - - return bytesread - startbytesread; -} - - -int ParseFaceL1 (FILE *input) -{ - - int i, j, startbytesread; - unsigned short tshort; - - if (trisfound) - Error ("Error: Multiple face chunks"); - - trisfound = 1; - startbytesread = bytesread; - - if (feof(input)) - Error ("Error: unexpected end of file"); - - fread(&tshort, sizeof(tshort), 1, input); - bytesread += sizeof(tshort); - numtris = (int)tshort; - - if (numtris > MAXTRIANGLES) - Error ("Error: Too many triangles"); - - for (i=0 ; i<numtris ; i++) - { - for (j=0 ; j<4 ; j++) - { - if (feof(input)) - Error ("Error: unexpected end of file"); - - fread(&tshort, sizeof(tshort), 1, input); - bytesread += sizeof(tshort); - tris[i].v[j] = (int)tshort; - } - } - - if (vertsfound && trisfound) - StoreAliasTriangles (); - - return bytesread - startbytesread; -} - - -int ParseChunk (FILE *input) -{ -#define BLOCK_SIZE 4096 - char temp[BLOCK_SIZE]; - unsigned short type; - int i, length, w, t, retval; - - level++; - retval = 0; - -// chunk type - if (feof(input)) - Error ("Error: unexpected end of file"); - - fread(&type, sizeof(type), 1, input); - bytesread += sizeof(type); - -// chunk length - if (feof(input)) - Error ("Error: unexpected end of file"); - - fread (&length, sizeof(length), 1, input); - bytesread += sizeof(length); - w = length - 6; - -// process chunk if we care about it, otherwise skip it - switch (type) - { - case TRI_VERTEXL: - w -= ParseVertexL (input); - goto ParseSubchunk; - - case TRI_FACEL1: - w -= ParseFaceL1 (input); - goto ParseSubchunk; - - case EDIT_OBJECT: - // read the name - i = 0; - - do - { - if (feof(input)) - Error ("Error: unexpected end of file"); - - fread (&temp[i], 1, 1, input); - i++; - w--; - bytesread++; - } while (temp[i-1]); - - case MAIN3DS: - case OBJ_TRIMESH: - case EDIT3DS: - // parse through subchunks -ParseSubchunk: - while (w > 0) - { - w -= ParseChunk (input); - } - - retval = length; - goto Done; - - default: - // skip other chunks - while (w > 0) - { - t = w; - - if (t > BLOCK_SIZE) - t = BLOCK_SIZE; - - if (feof(input)) - Error ("Error: unexpected end of file"); - - fread (&temp, t, 1, input); - bytesread += t; - - w -= t; - } - - retval = length; - goto Done; - } - -Done: - level--; - return retval; -} - - -void Load3DSTriangleList (char *filename, triangle_t **pptri, int *numtriangles) -{ - FILE *input; - short int tshort; - - bytesread = 0; - level = 0; - numtris = 0; - totaltris = 0; - vertsfound = 0; - trisfound = 0; - - if ((input = fopen(filename, "rb")) == 0) { - fprintf(stderr,"reader: could not open file '%s'\n", filename); - exit(0); - } - - fread(&tshort, sizeof(tshort), 1, input); - -// should only be MAIN3DS, but some files seem to start with EDIT3DS, with -// no MAIN3DS - if ((tshort != MAIN3DS) && (tshort != EDIT3DS)) { - fprintf(stderr,"File is not a 3DS file.\n"); - exit(0); - } - -// back to top of file so we can parse the first chunk descriptor - fseek(input, 0, SEEK_SET); - - ptri = malloc (MAXTRIANGLES * sizeof(triangle_t)); - - *pptri = ptri; - -// parse through looking for the relevant chunk tree (MAIN3DS | EDIT3DS | EDIT_OBJECT | -// OBJ_TRIMESH | {TRI_VERTEXL, TRI_FACEL1}) and skipping other chunks - ParseChunk (input); - - if (vertsfound || trisfound) - Error ("Incomplete triangle set"); - - *numtriangles = totaltris; - - fclose (input); -} - |