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bsp2bmp.c
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bsp2bmp.c
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/*
bsp2bmp - converts Quake I BSP's to a bitmap (map!) of the level
Copyright (C) 1999 Matthew Wong <[email protected]>
This program 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.
This program 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 this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <stdio.h>
#include <stdarg.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <string.h>
#include <math.h>
#include <values.h>
#include <stdint.h>
#define PROGNAME "bsp2bmp"
#define V_MAJOR 0
#define V_MINOR 0
#define V_REV 15
#define V_SUBREV "d"
#define Z_PAD_HACK 16
#define MAX_REF_FACES 4
#ifndef MAXINT
#include <limits.h>
#define MAXINT INT_MAX
#endif
/*
Thanks fly to Id for a hackable game! :)
Types are copied from the BSP section of the Quake specs,
thanks to Olivier Montanuy et al.
*/
int quiet;
/* Data structs */
typedef struct dentry_t {
long offset;
long size;
} dentry_t;
typedef struct dheader_t {
long version;
dentry_t entities;
dentry_t planes;
dentry_t miptex;
dentry_t vertices;
dentry_t visilist;
dentry_t nodes;
dentry_t texinfo;
dentry_t faces;
dentry_t lightmaps;
dentry_t clipnodes;
dentry_t leaves;
dentry_t iface;
dentry_t edges;
dentry_t ledges;
dentry_t models;
} dheader_t;
/* vertices */
typedef struct vertex_t {
float X;
float Y;
float Z;
} vertex_t;
/* edges */
typedef struct edge_t {
unsigned short vertex0; /* index of start vertex, 0..numvertices */
unsigned short vertex1; /* index of end vertex, 0..numvertices */
} edge_t;
/* faces */
typedef struct face_t {
unsigned short plane_id;
unsigned short side;
long ledge_id;
unsigned short ledge_num;
unsigned short texinfo_id;
unsigned char typelight;
unsigned char baselight;
unsigned char light[2];
long lightmap;
} face_t;
/* MW */
typedef struct edge_extra_t {
long num_face_ref;
long ref_faces[MAX_REF_FACES]; /* which faces ref'd */
vertex_t ref_faces_normal[MAX_REF_FACES]; /* normal of faces */
int ref_faces_area[MAX_REF_FACES]; /* area of faces */
} edge_extra_t;
typedef unsigned char eightbit;
typedef struct options_t {
char *bspf_name;
char *outf_name;
float scaledown;
float z_pad;
float image_pad;
int z_direction;
int camera_axis;
/* 1 - X, 2 - Y, 3 - Z, negatives come from negative side of axis */
int edgeremove;
float flat_threshold;
int area_threshold;
int linelen_threshold;
int negative_image;
int write_raw;
int write_nocomp;
} options_t;
typedef struct bmp_infoheader_t {
long headersize;
long imagewidth;
long imageheight;
unsigned short planes;
unsigned short bitcount;
long compression;
long datasize;
long xpelspermeter;
long ypelspermeter;
long colsused;
long colsimportant;
} bmp_infoheader_t;
typedef struct bmp_fileheader_t {
eightbit filetype[2];
long filesize; /* 4 : 4 */
unsigned short unused1; /* 2 x 2 : 4 */
unsigned short unused2; /* 2 x 2 : 4 */
long data_ofs; /* 4 : 4 */
} bmp_fileheader_t;
typedef struct rgb_quad_t {
eightbit red;
eightbit green;
eightbit blue;
eightbit unused;
} rgb_quad_t;
/*---------------------------------------------------------------------------*/
void stdprintf( char *fmt, ... ) {
va_list argp;
if (!quiet)
{
va_start( argp, fmt );
vfprintf( stdout, fmt, argp );
va_end( argp );
}
}
/*---------------------------------------------------------------------------*/
void show_help() {
stdprintf("BSP->bitmap, version %d.%d.%d%s\n",V_MAJOR,V_MINOR,V_REV,V_SUBREV);
stdprintf("Copyright (c) 1999-2004, Matthew Wong\n\n");
stdprintf("Usage:\n");
stdprintf(" %s [options] <bspfile> [outfile]\n\n",PROGNAME);
stdprintf("Options:\n");
stdprintf(" -s<scaledown> default: 4, ie 1/4 scale\n");
stdprintf(" -z<z_scaling> default: 0 for flat map, >0 for iso 3d, -1 for auto\n");
stdprintf(" -p<padding> default: 16-pixel border around final image\n");
stdprintf(" -d<direction> iso 3d direction: 7 0 1\n");
stdprintf(" \\ | /\n");
stdprintf(" 6--+--2\n");
stdprintf(" / | \\\n");
stdprintf(" 5 4 3\n");
stdprintf(" default: 7\n");
stdprintf(" -c<camera_axis> default: +Z (+/- X/Y/Z axis)\n");
stdprintf(" -t<flatness> threshold of dot product for edge removal;\n");
stdprintf(" default is 0.90\n");
stdprintf(" -e disable extraneous edges removal\n");
stdprintf(" -a<area> minimum area for a polygon to be drawn\n");
stdprintf(" default is 0\n");
stdprintf(" -l<length> minimum length for an edge to be drawn\n");
stdprintf(" default is 0\n");
stdprintf(" -n negative image (black on white\n");
stdprintf(" -r write raw data, rather than bmp file\n");
stdprintf(" -q quiet output\n");
// stdprintf(" -u write uncompressed bmp\n");
stdprintf("\n");
stdprintf("If [outfile] is omitted, then program will create .bmp file in the same directory as .bsp file.\n");
return;
}
/*---------------------------------------------------------------------------*/
void plotpoint(eightbit *image, long width, long height, long xco, long yco, unsigned int color) {
unsigned int bigcol=0;
if(xco < 0 || xco > width || yco < 0 || yco > height)
return;
bigcol=(unsigned int)image[yco * width + xco];
bigcol=bigcol + color;
if (bigcol < 0)
bigcol=0;
if (bigcol > 255)
bigcol=255;
image[yco * width + xco]=(eightbit)bigcol;
return;
}
/*---------------------------------------------------------------------------*/
void bresline(eightbit *image, long width, long height, long x1, long y1, long x2, long y2, unsigned int color) {
long x=0, y=0;
long deltax=0, deltay=0;
long xchange=0, ychange=0;
long error, length, i;
x=x1;
y=y1;
deltax=x2 - x1;
deltay=y2 - y1;
if (deltax < 0) {
xchange = -1;
deltax = -deltax;
} else {
xchange = 1;
}
if (deltay < 0) {
ychange = -1;
deltay = -deltay;
} else {
ychange = 1;
}
/* Main seq */
error = 0;
i = 0;
if (deltax < deltay) {
length = deltay + 1;
while (i < length) {
y = y + ychange;
error = error + deltax;
if (error > deltay) {
x = x + xchange;
error = error - deltay;
}
i++;
plotpoint(image, width, height, x, y, color);
}
} else {
length = deltax + 1;
while ( i < length) {
x = x + xchange;
error = error + deltay;
if (error > deltax) {
y = y + ychange;
error = error - deltax;
}
i++;
plotpoint(image, width, height, x, y, color);
}
}
}
/*---------------------------------------------------------------------------*/
void def_options(struct options_t *opt) {
static struct options_t locopt;
locopt.bspf_name = NULL;
locopt.outf_name = NULL;
locopt.scaledown = 4.0;
locopt.image_pad = 16.0;
locopt.z_pad = 0.0;
locopt.z_direction = 1;
locopt.camera_axis = 3; /* default is from +Z */
locopt.edgeremove = 1;
locopt.flat_threshold = 0.90;
locopt.area_threshold = 0;
locopt.linelen_threshold = 0;
locopt.negative_image = 0;
locopt.write_raw = 0;
locopt.write_nocomp = 1;
memcpy(opt, &locopt, sizeof(struct options_t));
return;
}
/*---------------------------------------------------------------------------*/
void get_options(struct options_t *opt, int argc, char *argv[]) {
static struct options_t locopt;
int i=0;
char *arg;
long lnum=0;
float fnum=0.0;
char pm='+', axis='Z';
/* Man I hate parsing options... */
/* Copy curr options */
memcpy(&locopt, opt, sizeof(struct options_t));
/* Go through command line */
for (i=1; i<argc; i++) {
arg=argv[i];
if(arg[0] == '-') {
/* Okay, dash-something */
switch(arg[1]) {
case 'q':
quiet = 1;
break;
case 's':
if(sscanf(&arg[2],"%ld",&lnum) == 1)
if (lnum > 0)
locopt.scaledown = (float)lnum;
break;
case 'z':
if(sscanf(&arg[2],"%ld",&lnum) == 1)
if (lnum >= -1)
locopt.z_pad = (float)lnum;
break;
case 'p':
if(sscanf(&arg[2],"%ld",&lnum) == 1)
if (lnum >= 0)
locopt.image_pad = (float)lnum;
break;
case 'd':
if(sscanf(&arg[2],"%ld",&lnum) == 1)
if (lnum >= 0 && lnum <= 7)
locopt.z_direction = (int)lnum;
break;
case 'c':
if(strlen(&arg[2]) == 2) {
pm = arg[2];
axis = arg[3];
stdprintf("-c%c%c\n",pm,axis);
switch(axis) {
case 'x':
case 'X':
locopt.camera_axis=1;
break;
case 'y':
case 'Y':
locopt.camera_axis=2;
break;
case 'z':
case 'Z':
locopt.camera_axis=3;
break;
default:
stdprintf("Must specify a valid axis.\n");
show_help();
exit(1);
break;
}
switch(pm) {
case '+':
break;
case '-':
locopt.camera_axis=-locopt.camera_axis;
break;
default:
stdprintf("Must specify +/-\n");
show_help();
exit(1);
break;
}
} else {
stdprintf("Unknown option: -%s\n",&arg[1]);
show_help();
exit(1);
}
break;
case 't':
if(sscanf(&arg[2],"%f",&fnum) == 1)
if (fnum >= 0.0 && fnum <= 1.0)
locopt.flat_threshold = (float)fnum;
break;
case 'e':
locopt.edgeremove = 0;
break;
case 'n':
locopt.negative_image = 1;
break;
case 'a':
if(sscanf(&arg[2],"%ld",&lnum) == 1)
if (lnum >= 0)
locopt.area_threshold = (int)lnum;
break;
case 'l':
if(sscanf(&arg[2],"%ld",&lnum) == 1)
if (lnum >= 0)
locopt.linelen_threshold = (int)lnum;
break;
case 'r':
locopt.write_raw = 1;
break;
case 'u':
locopt.write_nocomp = 1;
break;
default:
stdprintf("Unknown option: -%s\n",&arg[1]);
show_help();
exit (1);
break;
} /* switch */
} else {
if(locopt.bspf_name == NULL) {
locopt.bspf_name = arg;
} else if (locopt.outf_name == NULL) {
locopt.outf_name = arg;
} else {
stdprintf("Unknown option: %s\n",arg);
show_help();
exit(1);
}
} /* if */
} /* for */
memcpy(opt, &locopt, sizeof(struct options_t));
return;
}
/*---------------------------------------------------------------------------*/
void show_options(struct options_t *opt)
{
char dirstr[80];
stdprintf("Options:\n");
stdprintf(" Scale down by: %.0f\n",opt->scaledown);
stdprintf(" Z scale: %.0f\n",opt->z_pad);
stdprintf(" Border: %.0f\n",opt->image_pad);
/* Zoffset calculations */
switch (opt->z_direction) {
case 0:
sprintf(dirstr,"up");
break;
case 1:
sprintf(dirstr,"up & right");
break;
case 2:
sprintf(dirstr,"right");
break;
case 3:
sprintf(dirstr,"down & right");
break;
case 4:
sprintf(dirstr,"down");
break;
case 5:
sprintf(dirstr,"down & left");
break;
case 6:
sprintf(dirstr,"left");
break;
case 7:
sprintf(dirstr,"up & left");
break;
default:
sprintf(dirstr,"unknown!");
break;
}
stdprintf(" Z direction: %d [%s]\n",opt->z_direction,dirstr);
if (opt->z_pad == 0) {
stdprintf(" Warning: direction option has no effect with Z scale set to 0.\n");
}
/* Camera axis */
switch (opt->camera_axis) {
case 1:
sprintf(dirstr,"+X");
break;
case -1:
sprintf(dirstr,"-X");
break;
case 2:
sprintf(dirstr,"+Y");
break;
case -2:
sprintf(dirstr,"-Y");
break;
case 3:
sprintf(dirstr,"+Z");
break;
case -3:
sprintf(dirstr,"-Z");
break;
default:
sprintf(dirstr,"unknown!");
break;
}
stdprintf(" Camera axis: %s\n", dirstr);
stdprintf(" Remove extraneous edges: %s\n", (opt->edgeremove == 1) ? "yes" : "no");
stdprintf(" Edge removal dot product theshold: %f\n", opt->flat_threshold);
stdprintf(" Minimum polygon area threshold (approximate): %d\n", opt->area_threshold);
stdprintf(" Minimum line length threshold: %d\n", opt->linelen_threshold);
stdprintf(" Creating %s image.\n", (opt->negative_image == 1) ? "negative" : "positive");
stdprintf("\n");
stdprintf(" Input (bsp) file: %s\n",opt->bspf_name);
if(opt->write_raw)
stdprintf(" Output (raw) file: %s\n\n",opt->outf_name);
else
stdprintf(" Output (%s bmp) file: %s\n\n",opt->write_nocomp ? "uncompressed" : "RLE compressed" ,opt->outf_name);
return;
}
/*===========================================================================*/
int main(int argc, char *argv[]) {
FILE *bspfile=NULL;
FILE *outfile=NULL;
long i=0, j=0, k=0, x=0;
long pad=0x00000000;
struct dheader_t bsp_header;
struct vertex_t *vertexlist=NULL;
struct edge_t *edgelist=NULL;
struct face_t *facelist=NULL;
int *ledges=NULL;
/* edge removal stuff */
struct edge_extra_t *edge_extra=NULL;
struct vertex_t v0, v1, vect;
int area, usearea;
long numedges=0;
long numlistedges=0;
long numvertices=0;
long numfaces=0;
float minX=0.0, maxX=0.0, minY=0.0, maxY=0.0, minZ=0.0, maxZ=0.0, midZ=0.0, tempf=0.0;
long Zoffset0=0, Zoffset1=0;
long Z_Xdir=1, Z_Ydir=-1;
long imagewidth=0,imageheight=0;
eightbit *image;
struct options_t options;
int drawcol;
static struct bmp_fileheader_t bmpfileheader;
static struct bmp_infoheader_t bmpinfoheader;
static struct rgb_quad_t rgbquad;
/*****/
/* Enough args? */
if (argc < 2) {
show_help();
return 1;
}
/* Setup options */
def_options(&options);
get_options(&options,argc,argv);
show_options(&options);
/* Create Output file name if it is not provided */
if(options.outf_name == NULL)
{
options.outf_name=malloc(strlen(options.bspf_name)+1);
strncpy (options.outf_name, options.bspf_name,strlen(options.bspf_name)-3);
strcat(options.outf_name,"bmp");
fprintf(stdout,"Assuming BMP name from BSP name: %s\n",options.outf_name);
}
bspfile=fopen(options.bspf_name,"rb");
if (bspfile == NULL) {
fprintf(stderr,"Error opening bsp file %s.\n",options.bspf_name);
return 1;
}
/* Read header */
stdprintf("Reading header...");
/* OLD:
i = fread(&bsp_header, sizeof(struct dheader_t), 1, bspfile);
*/
i = 0;
i = i + fread(&bsp_header.version, sizeof(long), 1, bspfile);
/* entities: */
i = i + fread(&bsp_header.entities.offset, sizeof(long), 1, bspfile);
i = i + fread(&bsp_header.entities.size, sizeof(long), 1, bspfile);
/* planes: */
i = i + fread(&bsp_header.planes.offset, sizeof(long), 1, bspfile);
i = i + fread(&bsp_header.planes.size, sizeof(long), 1, bspfile);
/* miptex: */
i = i + fread(&bsp_header.miptex.offset, sizeof(long), 1, bspfile);
i = i + fread(&bsp_header.miptex.size, sizeof(long), 1, bspfile);
/* vertices: */
i = i + fread(&bsp_header.vertices.offset, sizeof(long), 1, bspfile);
i = i + fread(&bsp_header.vertices.size, sizeof(long), 1, bspfile);
/* visilist: */
i = i + fread(&bsp_header.visilist.offset, sizeof(long), 1, bspfile);
i = i + fread(&bsp_header.visilist.size, sizeof(long), 1, bspfile);
/* nodes: */
i = i + fread(&bsp_header.nodes.offset, sizeof(long), 1, bspfile);
i = i + fread(&bsp_header.nodes.size, sizeof(long), 1, bspfile);
/* texinfo: */
i = i + fread(&bsp_header.texinfo.offset, sizeof(long), 1, bspfile);
i = i + fread(&bsp_header.texinfo.size, sizeof(long), 1, bspfile);
/* faces: */
i = i + fread(&bsp_header.faces.offset, sizeof(long), 1, bspfile);
i = i + fread(&bsp_header.faces.size, sizeof(long), 1, bspfile);
/* lightmaps: */
i = i + fread(&bsp_header.lightmaps.offset, sizeof(long), 1, bspfile);
i = i + fread(&bsp_header.lightmaps.size, sizeof(long), 1, bspfile);
/* clipnodes: */
i = i + fread(&bsp_header.clipnodes.offset, sizeof(long), 1, bspfile);
i = i + fread(&bsp_header.clipnodes.size, sizeof(long), 1, bspfile);
/* leaves: */
i = i + fread(&bsp_header.leaves.offset, sizeof(long), 1, bspfile);
i = i + fread(&bsp_header.leaves.size, sizeof(long), 1, bspfile);
/* iface: */
i = i + fread(&bsp_header.iface.offset, sizeof(long), 1, bspfile);
i = i + fread(&bsp_header.iface.size, sizeof(long), 1, bspfile);
/* edges: */
i = i + fread(&bsp_header.edges.offset, sizeof(long), 1, bspfile);
i = i + fread(&bsp_header.edges.size, sizeof(long), 1, bspfile);
/* ledges: */
i = i + fread(&bsp_header.ledges.offset, sizeof(long), 1, bspfile);
i = i + fread(&bsp_header.ledges.size, sizeof(long), 1, bspfile);
/* models: */
i = i + fread(&bsp_header.models.offset, sizeof(long), 1, bspfile);
i = i + fread(&bsp_header.models.size, sizeof(long), 1, bspfile);
if (i != 31) {
stdprintf("error %s!\n",strerror(errno));
return 1;
} else {
stdprintf("done.\n");
}
numvertices = (bsp_header.vertices.size/sizeof(struct vertex_t));
numedges = (bsp_header.edges.size/sizeof(struct edge_t));
numlistedges = (bsp_header.ledges.size/sizeof(short));
numfaces = (bsp_header.faces.size/sizeof(struct face_t));
/* display header */
stdprintf("Header info:\n\n");
stdprintf(" version %ld\n",bsp_header.version);
stdprintf(" vertices - offset %ld\n",bsp_header.vertices.offset);
stdprintf(" - size %ld",bsp_header.vertices.size);
stdprintf(" [numvertices = %ld]\n", numvertices);
stdprintf("\n");
stdprintf(" edges - offset %ld\n",bsp_header.edges.offset);
stdprintf(" - size %ld",bsp_header.edges.size);
stdprintf(" [numedges = %ld]\n", numedges);
stdprintf("\n");
stdprintf(" ledges - offset %ld\n",bsp_header.ledges.offset);
stdprintf(" - size %ld",bsp_header.ledges.size);
stdprintf(" [numledges = %ld]\n", numlistedges);
stdprintf("\n");
stdprintf(" faces - offset %ld\n",bsp_header.faces.offset);
stdprintf(" - size %ld",bsp_header.faces.size);
stdprintf(" [numfaces = %ld]\n", numfaces);
stdprintf("\n");
/* Read vertices - - - - - - - - - - - - - - - - - */
vertexlist = malloc(sizeof(struct vertex_t) * numvertices);
if (vertexlist == NULL) {
fprintf(stderr,"Error allocating %ld bytes for vertices.",sizeof(struct vertex_t) * numvertices);
return 2;
}
stdprintf("Reading %ld vertices...",numvertices);
if (fseek(bspfile,bsp_header.vertices.offset,SEEK_SET)) {
fprintf(stderr, "error seeking to %ld\n",bsp_header.vertices.offset);
return 1;
} else {
stdprintf("seek to %ld...",ftell(bspfile));
}
/* OLD:
i=fread(vertexlist, sizeof(struct vertex_t), numvertices, bspfile);
*/
i = 0;
while (i < numvertices) {
j = 0;
j = j + fread(&(vertexlist[i].X), sizeof(float), 1, bspfile);
j = j + fread(&(vertexlist[i].Y), sizeof(float), 1, bspfile);
j = j + fread(&(vertexlist[i].Z), sizeof(float), 1, bspfile);
if (j < 3)
break;
i++;
}
if (i != numvertices) {
fprintf(stderr, "error %s! only %ld read.\n",strerror(errno),i);
return 1;
} else {
stdprintf("successfully read %ld vertices.\n",i);
}
/* Read edges - - - - - - - - - - - - - - - - - - */
edgelist = malloc(sizeof(struct edge_t) * numedges);
if (edgelist == NULL) {
fprintf(stderr,"Error allocating %ld bytes for edges.",sizeof(struct edge_t) * numedges);
return 2;
}
stdprintf( "Reading %ld edges...",numedges);
if (fseek(bspfile,bsp_header.edges.offset,SEEK_SET)) {
fprintf(stderr,"error seeking to %ld\n",bsp_header.vertices.offset);
return 1;
} else {
stdprintf("seek to %ld...",ftell(bspfile));
}
/* OLD:
i=fread(edgelist, sizeof(struct edge_t), numedges, bspfile);
*/
i = 0;
while (i < numedges) {
j = 0;
j = j + fread(&(edgelist[i].vertex0), sizeof(unsigned short), 1, bspfile);
j = j + fread(&(edgelist[i].vertex1), sizeof(unsigned short), 1, bspfile);
if (j < 2)
break;
i++;
}
if (i != numedges) {
fprintf(stderr, "error %s! only %ld read.\n",strerror(errno),i);
return 1;
} else {
stdprintf("successfully read %ld edges.\n",i);
}
/* Read ledges - - - - - - - - - - - - - - - - - */
ledges = malloc(sizeof(short) * numlistedges);
if (ledges == NULL) {
fprintf(stderr,"Error allocating %ld bytes for ledges.",sizeof(short) * numlistedges);
return 2;
}
stdprintf("Reading ledges...");
if (fseek(bspfile,bsp_header.ledges.offset,SEEK_SET)) {
fprintf(stderr, "error seeking to %ld\n",bsp_header.ledges.offset);
return 1;
} else {
stdprintf("seek to %ld...",ftell(bspfile));
}
i=fread(ledges,sizeof(short),numlistedges,bspfile);
if (i != numlistedges) {
fprintf(stderr, "error %s! only %ld read.\n",strerror(errno),i);
return 1;
} else {
stdprintf("successfully read %ld ledges.\n",i);
}
/* Read faces - - - - - - - - - - - - - - - - - - */
facelist = malloc(sizeof(struct face_t) * numfaces);
if (facelist == NULL) {
fprintf(stderr,"Error allocating %ld bytes for faces.",sizeof(short) * numfaces);
return 2;
}
stdprintf("Reading faces...");
if (fseek(bspfile,bsp_header.faces.offset,SEEK_SET)) {
fprintf(stderr, "error seeking to %ld\n",bsp_header.faces.offset);
return 1;
} else {
stdprintf("seek to %ld...",ftell(bspfile));
}
/* OLD:
i=fread(facelist,sizeof(struct face_t),numfaces,bspfile);
*/
i = 0;
while (i < numfaces) {
j = 0;
j = j + fread(&(facelist[i].plane_id),sizeof(unsigned short), 1, bspfile);
j = j + fread(&(facelist[i].side),sizeof(unsigned short), 1, bspfile);
j = j + fread(&(facelist[i].ledge_id),sizeof(long), 1, bspfile);
j = j + fread(&(facelist[i].ledge_num),sizeof(unsigned short), 1, bspfile);
j = j + fread(&(facelist[i].texinfo_id),sizeof(unsigned short), 1, bspfile);
j = j + fread(&(facelist[i].typelight),sizeof(unsigned char), 1, bspfile);
j = j + fread(&(facelist[i].baselight),sizeof(unsigned char), 1, bspfile);
j = j + fread(&(facelist[i].light[0]),sizeof(unsigned char), 1, bspfile);
j = j + fread(&(facelist[i].light[1]),sizeof(unsigned char), 1, bspfile);
j = j + fread(&(facelist[i].lightmap),sizeof(long), 1, bspfile);
if (j < 10)
break;
i++;
}
if (i != numfaces) {
fprintf(stderr, "error %s! only %ld read.\n",strerror(errno),i);
return 1;
} else {
stdprintf("successfully read %ld faces.\n",i);
}
/* Should be done reading stuff - - - - - - - - - - - - */
fclose(bspfile);
/* Precalc stuff if we're removing edges - - - - - - - - - */
/*
typedef struct edge_extra_t
{
int num_face_ref;
int ref_faces[MAX_REF_FACES];
vertex_t ref_faces_normal[MAX_REF_FACES];
} edge_extra_t;
*/
if (options.edgeremove) {
stdprintf("Precalc edge removal stuff...\n");
edge_extra = malloc(sizeof(struct edge_extra_t) * numedges);
if (edge_extra == NULL) {
fprintf(stderr,"Error allocating %ld bytes for extra edge info.",sizeof(struct edge_extra_t) * numedges);
return 2;
}
/* initialize the array */
for (i=0; i<numedges; i++) {
edge_extra[i].num_face_ref=0;
for (j=0;j<MAX_REF_FACES;j++) {
edge_extra[i].ref_faces[j]=-1;
}
}
for (i=0; i<numfaces; i++) {
/* calculate the normal (cross product) */
/* starting edge: edgelist[ledges[facelist[i].ledge_id]] */
/* number of edges: facelist[i].ledge_num; */
/* quick hack - just take the first 2 edges */
j=facelist[i].ledge_id;
k=j;
vect.X = 0.0; vect.Y = 0.0; vect.Z = 0.0;
while (vect.X == 0.0 && vect.Y == 0.0 && vect.Z == 0.0 && k < (facelist[i].ledge_num + j)) {
/* If the first 2 are par?llel edges, go with the next one */
k++;
/*
if (i == (numfaces-1))
k=0;
*/
if (ledges[j] > 0) {
v0.X = vertexlist[edgelist[abs((int)ledges[j])].vertex0].X - vertexlist[edgelist[abs((int)ledges[j])].vertex1].X;
v0.Y = vertexlist[edgelist[abs((int)ledges[j])].vertex0].Y - vertexlist[edgelist[abs((int)ledges[j])].vertex1].Y;
v0.Z = vertexlist[edgelist[abs((int)ledges[j])].vertex0].Z - vertexlist[edgelist[abs((int)ledges[j])].vertex1].Z;
v1.X = vertexlist[edgelist[abs((int)ledges[k])].vertex0].X - vertexlist[edgelist[abs((int)ledges[k])].vertex1].X;
v1.Y = vertexlist[edgelist[abs((int)ledges[k])].vertex0].Y - vertexlist[edgelist[abs((int)ledges[k])].vertex1].Y;
v1.Z = vertexlist[edgelist[abs((int)ledges[k])].vertex0].Z - vertexlist[edgelist[abs((int)ledges[k])].vertex1].Z;
} else {
/* negative index, therefore walk in reverse order */
v0.X = vertexlist[edgelist[abs((int)ledges[j])].vertex1].X - vertexlist[edgelist[abs((int)ledges[j])].vertex0].X;
v0.Y = vertexlist[edgelist[abs((int)ledges[j])].vertex1].Y - vertexlist[edgelist[abs((int)ledges[j])].vertex0].Y;
v0.Z = vertexlist[edgelist[abs((int)ledges[j])].vertex1].Z - vertexlist[edgelist[abs((int)ledges[j])].vertex0].Z;
v1.X = vertexlist[edgelist[abs((int)ledges[k])].vertex1].X - vertexlist[edgelist[abs((int)ledges[k])].vertex0].X;
v1.Y = vertexlist[edgelist[abs((int)ledges[k])].vertex1].Y - vertexlist[edgelist[abs((int)ledges[k])].vertex0].Y;
v1.Z = vertexlist[edgelist[abs((int)ledges[k])].vertex1].Z - vertexlist[edgelist[abs((int)ledges[k])].vertex0].Z;
}
/* cross product */
vect.X = (v0.Y * v1.Z) - (v0.Z * v1.Y);
vect.Y = (v0.Z * v1.X) - (v0.X * v1.Z);
vect.Z = (v0.X * v1.Y) - (v0.Y * v1.X);
/* Okay, it's not the REAL area, but i'm lazy, and since a lot of mapmakers use rectangles anyways... */
area = (int)(sqrt(v0.X*v0.X + v0.Y*v0.Y + v0.Z*v0.Z) * sqrt(v1.X*v1.X + v1.Y*v1.Y + v1.Z*v1.Z));
} /* while */
/* reduce cross product to a unit vector */
tempf = (float)sqrt((double)(vect.X*vect.X + vect.Y*vect.Y + vect.Z*vect.Z));
//stdprintf("%4ld - (%8.3f, %8.3f, %8.3f) X (%8.3f, %8.3f, %8.3f) = (%8.3f, %8.3f, %8.3f) -> ",i,v0.X, v0.Y, v0.Z, v1.X, v1.Y, v1.Z, vect.X, vect.Y, vect.Z);
if (tempf > 0.0) {
vect.X = vect.X / tempf;
vect.Y = vect.Y / tempf;
vect.Z = vect.Z / tempf;
} else {
vect.X = 0.0;
vect.Y = 0.0;
vect.Z = 0.0;
}
//stdprintf("(%8.3f, %8.3f, %8.3f)\n",vect.X, vect.Y, vect.Z);
/* Now go put ref in all edges... */
// stdprintf("<id=%ld|num=%ld>",facelist[i].ledge_id, facelist[i].ledge_num);
for (j=0; j<facelist[i].ledge_num; j++) {
k = j + facelist[i].ledge_id;
x = edge_extra[abs((int)ledges[k])].num_face_ref;
//stdprintf("e%d(le%ld)",abs((int)ledges[k]),k);
if (edge_extra[abs((int)ledges[k])].num_face_ref < MAX_REF_FACES) {
x++;
edge_extra[abs((int)ledges[k])].num_face_ref = x;
edge_extra[abs((int)ledges[k])].ref_faces[x-1]=i;
edge_extra[abs((int)ledges[k])].ref_faces_normal[x-1].X=vect.X;
edge_extra[abs((int)ledges[k])].ref_faces_normal[x-1].Y=vect.Y;
edge_extra[abs((int)ledges[k])].ref_faces_normal[x-1].Z=vect.Z;
edge_extra[abs((int)ledges[k])].ref_faces_area[x-1]=area;
}
} /* for */
}
}
/* . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . */
stdprintf("Collecting min/max\n");
/* Collect min and max */
for (i=0;i<numvertices;i++) {
/* DEBUG - print vertices */
// stdprintf("vertex %ld: (%f, %f, %f)\n", i, vertexlist[i].X, vertexlist[i].Y, vertexlist[i].Z);
/* Ugly hack - flip stuff around for different camera angles */
switch(options.camera_axis) {
case -1:
/* -X -- (-y <--> +y, +x into screen, -x out of screen; -z down, +z up) */
tempf = vertexlist[i].X;
vertexlist[i].X = vertexlist[i].Y;
vertexlist[i].Y = vertexlist[i].Z;
vertexlist[i].Z = -tempf;
break;
case 1:
/* +X -- (+y <--> -y; -x into screen, +x out of screen; -z down, +z up) */
tempf = vertexlist[i].X;
vertexlist[i].X = -vertexlist[i].Y;
vertexlist[i].Y = vertexlist[i].Z;
vertexlist[i].Z = tempf;
break;
case -2:
/* -Y -- (+x <--> -x; -y out of screen, +z up) */
vertexlist[i].X = -vertexlist[i].X;
tempf = vertexlist[i].Z;
vertexlist[i].Z = vertexlist[i].Y;
vertexlist[i].Y = tempf;
break;