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3DS2POV.C
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C/C++ Source or Header
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1995-05-20
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67KB
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2,834 lines
/*
3DS2POV.C Copyright (c) 1993 Steve Anger and Jeff Bowermaster
Reads a 3D Studio .3DS file and writes a POV-Ray, Vivid, or
Polyray scene file.
Version 1.8 Written Oct/93
Compiled with MSDOS GNU C++ 2.4.1
*/
#define __GNUC__
#undef __TURBOC__
#include <stdio.h>
#include "portab.h"
#include <stdlib.h>
#include <math.h>
#include <string.h>
#include <ctype.h>
#include "vect.h"
#include "rayopt.h"
#ifdef __TURBOC__
#include <alloc.h>
extern unsigned _stklen = 16384;
#endif
#define FALSE 0
#define TRUE 1
/* Internal bounding modes */
#define OFF 0
#define ON 1
#define AUTO 2
#define MAX_LIB 10
#define ASPECT 1.333
/* Output formats */
#define POV10 0
#define POV20 1
#define VIVID 2
#define POLYRAY 3
#define RAW 99
#define DEG(x) ((180.0/M_PI)*(x))
#define RAD(x) ((M_PI/180.0)*(x))
#ifndef M_PI
#define M_PI (3.1415926535)
#endif
#ifndef MAXFLOAT
#define MAXFLOAT (1e37)
#endif
/* A generic list type */
#define LIST_INSERT(root, node) list_insert ((List **)&root, (List *)node)
#define LIST_FIND(root, name) list_find ((List **)&root, name)
#define LIST_DELETE(root, node) list_delete ((List **)&root, (List *)node)
#define LIST_KILL(root) list_kill ((List **)&root)
#define LIST_FIELDS \
char name[80]; \
void *next;
typedef unsigned char byte;
typedef unsigned short word;
typedef unsigned long dword;
typedef struct {
LIST_FIELDS
} List;
typedef struct {
int a, b, c;
} Face;
typedef struct {
float red, green, blue;
} Colour;
/* Transformation command */
typedef struct {
LIST_FIELDS
Matrix matrix;
} Transform;
/* Morph command */
typedef struct {
LIST_FIELDS
int count; /* Number of objects in morph */
char names[4][80]; /* Name of n'th object in average */
float weight[4]; /* Weight applied to n'th object */
Matrix matrix;
} Morph;
/* Omni light command */
typedef struct {
LIST_FIELDS
Vector pos; /* Light position */
Colour col; /* Light colour */
} OmniLight;
/* Spotlight command */
typedef struct {
LIST_FIELDS
Vector pos; /* Spotlight position */
Vector target; /* Spotlight target location */
Colour col; /* Spotlight colour */
float hotspot; /* Hotspot angle (degrees) */
float falloff; /* Falloff angle (degrees) */
int shadow_flag; /* Shadow flag (not used) */
} Spotlight;
/* Camera command */
typedef struct {
LIST_FIELDS
Vector pos; /* Camera location */
Vector target; /* Camera target */
float bank; /* Banking angle (degrees) */
float lens; /* Camera lens size (mm) */
} Camera;
/* Material list */
typedef struct {
LIST_FIELDS
int external; /* Externally defined material? */
} Material;
/* Object summary */
typedef struct {
LIST_FIELDS
Vector center; /* Min value of object extents */
Vector lengths; /* Max value of object extents */
} Summary;
/* Material property */
typedef struct {
LIST_FIELDS
Colour ambient;
Colour diffuse;
Colour specular;
float shininess;
float transparency;
float reflection;
int self_illum;
char tex_map[40];
float tex_strength;
char bump_map[40];
float bump_strength;
} MatProp;
/* Default material property */
MatProp DefaultMaterial = { "Default", NULL, {1.0, 1.0, 1.0}, {1.0, 1.0, 1.0},
{1.0, 1.0, 1.0}, 70.0, 0.0, 0.0, FALSE };
/* A mesh object */
typedef struct {
LIST_FIELDS
int vertices; /* Number of vertices */
Vector *vertex; /* List of object vertices */
int faces; /* Number of faces */
Face *face; /* List of object faces */
Material **mtl; /* Materials for each face */
Matrix matrix; /* Local mesh matrix */
Matrix invmatrix;
Vector center; /* Center of object */
Vector lengths; /* Dimensions of object */
int hidden; /* Hidden flag */
int shadow; /* Shadow flag */
} Mesh;
typedef struct {
dword start;
dword end;
dword length;
word tag;
} Chunk;
typedef struct {
byte red;
byte green;
byte blue;
} Colour_24;
Colour Black = {0.0, 0.0, 0.0};
OmniLight *omni_list = NULL;
Spotlight *spot_list = NULL;
Camera *cam_list = NULL;
Mesh *mesh_list = NULL;
Transform *trans_list = NULL;
Morph *morph_list = NULL;
Material *mtl_list = NULL;
List *excl_list = NULL;
List *box_list = NULL;
MatProp *mprop_list = NULL;
Summary *summary = NULL;
FILE *in;
FILE *out;
char inname[80];
char outname[80];
char vuename[80];
char obj_name[80] = "";
Colour fog_colour = {0.0, 0.0, 0.0};
Colour col = {0.0, 0.0, 0.0};
Colour global_amb = {0.1, 0.1, 0.1};
Vector pos = {0.0, 0.0, 0.0};
Vector target = {0.0, 0.0, 0.0};
float fog_distance = 0.0;
float hotspot = -1;
float falloff = -1;
Mesh *mesh = NULL;
int frame = -1;
char libname[MAX_LIB][80];
float smooth = 60.0;
int bound = 0;
int verbose = 0;
int format = POV20;
int internal_bounding = AUTO;
int box_all = FALSE;
int cameras = 0;
int libs = 0;
float vue_version = 1.0;
Matrix *ani_matrix = NULL;
void process_args (int argc, char *argv[]);
void parse_option (char *option);
void list_insert (List **root, List *new_node);
void *list_find (List **root, char *name);
void list_delete (List **root, List *node);
void list_kill (List **root);
Material *update_materials (char *new_material, int ext);
MatProp *create_mprop (void);
void read_library (char *fname);
void write_intro (FILE *f);
void write_summary (FILE *f);
void write_bgsolid (FILE *f, Colour col);
void write_light (FILE *f, char *name, Vector pos, Colour col);
void write_spot (FILE *f, char *name, Vector pos, Vector target, Colour col,
float hotspot, float falloff);
void write_fog (FILE *f, Colour col, float dist);
void write_camera (FILE *f, char *name, Vector pos, Vector target, float lens,
float bank);
void write_material (FILE *f, char *mat);
void write_pov10_material (FILE *f, MatProp *m);
void write_pov20_material (FILE *f, MatProp *m);
void write_vivid_material (FILE *f, MatProp *m);
void write_polyray_material (FILE *f, MatProp *m);
void write_mesh (FILE *f, Mesh *mesh);
Transform *parse_transform (char *string);
Morph *parse_morph (char *string);
OmniLight *parse_omnilight (char *string);
Spotlight *parse_spotlight (char *string);
Camera *parse_camera (char *string);
void read_frame (char *filename, int frame_no);
void find_frame (FILE *f, int frame_no);
void save_animation (void);
Mesh *create_mesh (char *name, int vertices, int faces);
Mesh *copy_mesh (Mesh *mesh);
void free_mesh_data (Mesh *mesh);
void update_limits (Mesh *mesh);
char *before (char *str, char *target);
char *after (char *str, char *target);
char *between (char *str, char *target1, char *target2);
char *parse_string (char *str);
char upcase (char c);
float colour_intens (Colour *colour);
void parse_file (void);
void parse_3ds (Chunk *mainchunk);
void parse_mdata (Chunk *mainchunk);
void parse_fog (Chunk *mainchunk);
void parse_fog_bgnd (void);
void parse_mat_entry (Chunk *mainchunk);
char *parse_mapname (Chunk *mainchunk);
void parse_named_object (Chunk *mainchunk);
void parse_n_tri_object (Chunk *mainchunk);
void parse_point_array (void);
void parse_face_array (Chunk *mainchunk);
void parse_msh_mat_group (void);
void parse_smooth_group (void);
void parse_mesh_matrix (void);
void parse_n_direct_light (Chunk *mainchunk);
void parse_dl_spotlight (void);
void parse_n_camera (void);
void parse_colour (Colour *colour);
void parse_colour_f (Colour *colour);
void parse_colour_24 (Colour_24 *colour);
float parse_percentage (void);
short parse_int_percentage (void);
float parse_float_percentage (void);
void start_chunk (Chunk *chunk);
void end_chunk (Chunk *chunk);
byte read_byte (void);
word read_word (void);
dword read_dword (void);
float read_float (void);
void read_point (Vector v);
char *read_string (void);
float findfov (float lens);
int main (int argc, char *argv[])
{
Material *m;
int i;
process_args (argc, argv);
if (format != RAW) {
opt_set_format (format);
opt_set_dec (4);
opt_set_bound (bound);
opt_set_smooth (smooth);
opt_set_quiet (!verbose);
opt_set_fname (outname, "");
}
if ((in = fopen (inname, "rb")) == NULL) {
printf ("Cannot open input file %s!\n", inname);
exit (1);
}
if ((out = fopen (outname, "w")) == NULL) {
printf ("Cannot open output file %s!\n", outname);
exit (1);
}
/* Load the names of pre-defined materials */
for (i = 0; i < MAX_LIB; i++) {
if (strlen(libname[i]) > 0)
read_library (libname[i]);
}
/* Load the instructions for the current frame */
if (strlen(vuename) > 0)
read_frame (vuename, frame);
printf("Output to: %s\n", outname);
if (frame >= 0)
printf ("Generating frame #%d\n", frame);
printf("\nPlease wait; Processing...\n");
write_intro(out);
parse_file();
fclose(in);
for (m = mtl_list; m != NULL; m = m->next) {
if (!m->external)
write_material (out, m->name);
}
fclose (out);
if (frame >= 0)
save_animation();
if (format != RAW) {
out = fopen (outname, "a");
write_summary (out);
fclose (out);
opt_finish();
}
LIST_KILL (omni_list);
LIST_KILL (spot_list);
LIST_KILL (cam_list);
LIST_KILL (mesh_list);
LIST_KILL (trans_list);
LIST_KILL (morph_list);
LIST_KILL (mtl_list);
LIST_KILL (excl_list);
LIST_KILL (box_list);
LIST_KILL (mprop_list);
LIST_KILL (summary);
return 0;
}
/* Handle the command line args */
void process_args (int argc, char *argv[])
{
int i;
char *env_opt, *option;
printf("\n\nAutodesk 3D Studio to Raytracer file Translator. Oct/93\n");
printf("Version 1.8 Copyright (c) 1993 Steve Anger and Jeff Bowermaster\n");
#ifdef __GNUC__
printf ("32 bit version. DOS extender Copyright (c) 1991 DJ Delorie\n");
#endif
printf ("\n");
if (argc < 2) {
printf ("Usage: 3ds2pov inputfile[.3ds] [outputfile] [options]\n\n");
printf ("Options: -snnn - Smooth triangles with angles < nnn\n");
printf (" -l<filename> - Specifies 3DS texture library\n");
printf (" -a<filename> - Use animation information in specified file\n");
printf (" -fnnn - Generate frame nnn of animation\n");
printf (" -x<object> - Exclude this object from conversion\n");
printf (" -b<object> - Convert this object as a box\n");
printf (" +i, -i - Turn internal bounding on or off\n");
printf (" +v, -v - Turn verbose status messages on or off\n");
printf (" -op - Output to POV-Ray 2.0 format (default)\n");
printf (" -op1 - Output to POV-Ray 1.0 format\n");
printf (" -ov - Output to Vivid format\n");
printf (" -ol - Output to poLyray format\n");
printf (" -or - Output to RAW triangle format\n\n");
printf ("ex. 3ds2pov birdshow +v -l3ds.inc\n\n");
exit(1);
}
strcpy (inname, "");
strcpy (outname, "");
strcpy (vuename, "");
for (i = 0; i < MAX_LIB; i++)
strcpy (libname[i], "");
frame = -1;
smooth = 70.0;
bound = 0;
verbose = 0;
format = POV20;
internal_bounding = AUTO;
box_all = FALSE;
libs = 0;
/* Parse the enviroment string options */
env_opt = getenv ("3DS2POV");
if (env_opt != NULL) {
option = parse_string (env_opt);
while (strlen(option) > 0) {
parse_option (option);
option = parse_string (NULL);
}
}
/* Parse the command line options */
for (i = 1; i < argc; i++)
parse_option (argv[i]);
if (strlen(inname) == 0)
abortmsg ("No input file specified", 1);
if (strlen(outname) == 0) {
strcpy (outname, inname);
switch (format) {
case POV10:
case POV20: add_ext (outname, "pov", 1); break;
case VIVID: add_ext (outname, "v", 1); break;
case POLYRAY: add_ext (outname, "pi", 1); break;
case RAW: add_ext (outname, "raw", 1); break;
}
}
else {
switch (format) {
case POV10:
case POV20: add_ext (outname, "pov", 0); break;
case VIVID: add_ext (outname, "v", 0); break;
case POLYRAY: add_ext (outname, "pi", 0); break;
case RAW: add_ext (outname, "raw", 0); break;
}
}
switch (internal_bounding) {
case OFF: bound = 2; break;
case ON: bound = 0; break;
case AUTO: bound = (format == POV10) ? 0 : 2; break;
}
if ((strlen(vuename) > 0) != (frame >= 0))
abortmsg ("The -a and -f parameters must be used together", 1);
}
void parse_option (char *option)
{
List *excl, *box;
char name[80];
if (option[0] == '-' || option[0] == '+') {
switch (upcase(option[1])) {
case 'A': strcpy (vuename, &option[2]);
break;
case 'B': strcpy (name, parse_string (&option[2]));
if (strlen(name) == 0)
box_all = TRUE;
else {
cleanup_name (name);
box = malloc (sizeof (*box));
strcpy (box->name, name);
LIST_INSERT (box_list, box);
}
break;
case 'F': if (option[2] != '\0')
frame = atoi (&option[2]);
break;
case 'I': if (option[0] == '-')
internal_bounding = OFF;
else
internal_bounding = ON;
break;
case 'L': if (libs == MAX_LIB)
abortmsg ("Too many libraries specified", 1);
strcpy (libname[libs++], &option[2]);
break;
case 'O': switch (upcase(option[2])) {
case 'P': if (option[3] == '1')
format = POV10;
else
format = POV20;
break;
case 'V': format = VIVID;
break;
case 'L': format = POLYRAY;
break;
case 'R': format = RAW;
break;
default: printf ("Invalid output format %s specified\n", option);
exit(1);
}
break;
case 'S': if (option[2] != '\0')
smooth = atof (&option[2]);
break;
case 'U': printf ("Warning: -u parameter no long has any effect\n");
printf (" use +i or -i instead.\n");
break;
case 'V': if (option[0] == '-')
verbose = 0;
else
verbose = 1;
break;
case 'X': strcpy (name, parse_string (&option[2]));
cleanup_name (name);
excl = malloc (sizeof (*excl));
strcpy (excl->name, name);
LIST_INSERT (excl_list, excl);
break;
default : printf ("\nInvalid option %s specified\n", option);
exit (1);
}
}
else if (strlen (inname) == 0) {
strcpy (inname, option);
add_ext (inname, "3ds", 0);
}
else if (strlen (outname) == 0)
strcpy (outname, option);
else
abortmsg ("Too many file names specified.\n", 1);
}
/* Insert a new node into the list */
void list_insert (List **root, List *new_node)
{
new_node->next = *root;
*root = new_node;
}
/* Find the node with the specified name */
void *list_find (List **root, char *name)
{
List *p;
for (p = *root; p != NULL; p = p->next) {
if (strcmp (p->name, name) == 0)
break;
}
return (void *)p;
}
/* Delete the indicated node from the list */
void list_delete (List **root, List *node)
{
List *prev;
prev = *root;
while (prev != NULL && prev->next != node)
prev = prev->next;
if (prev == NULL)
*root = node->next;
else
prev->next = node->next;
free (node);
}
/* Delete the entire list */
void list_kill (List **root)
{
List *temp;
while (*root != NULL) {
temp = *root;
*root = (*root)->next;
free (temp);
}
}
/* Add a new material to the material list */
Material *update_materials (char *new_material, int ext)
{
Material *p;
p = LIST_FIND (mtl_list, new_material);
if (p == NULL) {
p = malloc (sizeof (*p));
if (p == NULL)
abortmsg ("Out of memory adding material", 1);
strcpy (p->name, new_material);
p->external = ext;
LIST_INSERT (mtl_list, p);
}
return p;
}
MatProp *create_mprop()
{
MatProp *new_mprop;
new_mprop = malloc (sizeof(*new_mprop));
if (new_mprop == NULL)
abortmsg ("Out of memory adding material", 1);
strcpy (new_mprop->name, "");
new_mprop->ambient = Black;
new_mprop->diffuse = Black;
new_mprop->specular = Black;
new_mprop->shininess = 0.0;
new_mprop->transparency = 0.0;
new_mprop->reflection = 0.0;
new_mprop->self_illum = FALSE;
strcpy (new_mprop->tex_map, "");
new_mprop->tex_strength = 0.0;
strcpy (new_mprop->bump_map, "");
new_mprop->bump_strength = 0.0;
return new_mprop;
}
/* Load in any predefined materials */
void read_library (char *fname)
{
FILE *lib;
char string[256], name[80];
if ((lib = fopen (fname, "r")) == NULL) {
printf ("Cannot open texture library file %s!\n", fname);
exit(1);
}
switch (format) {
case POV10:
case POV20:
while (fgets (string, 256, lib) != NULL) {
if (strstr (string, "#declare")) {
strcpy (name, between (string, "#declare", "="));
cleanup_name (name);
(void)update_materials (name, TRUE);
}
}
break;
case VIVID:
while (fgets (string, 256, lib) != NULL) {
if (strstr (string, "#define")) {
(void)parse_string (string);
strcpy (name, parse_string (NULL));
cleanup_name (name);
(void)update_materials (name, TRUE);
}
}
break;
case POLYRAY:
while (fgets (string, 256, lib) != NULL) {
if (strstr (string, "define")) {
(void)parse_string (string);
strcpy (name, parse_string (NULL));
cleanup_name (name);
(void)update_materials (name, TRUE);
}
}
break;
}
fclose (lib);
}
void write_intro (FILE *f)
{
int i;
switch (format) {
case POV10:
case POV20:
fprintf (f, "#include \"colors.inc\"\n");
fprintf (f, "#include \"shapes.inc\"\n");
fprintf (f, "#include \"textures.inc\"\n");
for (i = 0; i < MAX_LIB; i++) {
if (strlen(libname[i]) > 0)
fprintf (f, "#include \"%s\"\n", libname[i]);
}
fprintf (f, "\n");
break;
case VIVID:
fprintf (f, "#include color.vc\n");
for (i = 0; i < MAX_LIB; i++) {
if (strlen(libname[i]) > 0)
fprintf (f, "#include %s\n", libname[i]);
}
fprintf (f, "\n");
break;
case POLYRAY:
fprintf (f, "include \"colors.inc\"\n");
for (i = 0; i < MAX_LIB; i++) {
if (strlen(libname[i]) > 0)
fprintf (f, "include \"%s\"\n", libname[i]);
}
fprintf (f, "\n");
break;
}
}
/* Write the object summary */
void write_summary (FILE *f)
{
Summary *s;
if (summary == NULL)
return;
fprintf (f, "// Object CenterX CenterY CenterZ LengthX LengthY LengthZ\n");
fprintf (f, "// ---------- ---------- ---------- ---------- ---------- ---------- ----------\n");
for (s = summary; s != NULL; s = s->next) {
fprintf (f, "// %-10s%11.2f%11.2f%11.2f%11.2f%11.2f%11.2f\n",
s->name, s->center[X], s->center[Y], s->center[Z],
s->lengths[X], s->lengths[Y], s->lengths[Z]);
}
fprintf (f, "\n");
}
/* Write background solid colour */
void write_bgsolid (FILE *f, Colour col)
{
switch (format) {
case POV10:
fprintf (f, "/* Background colour */\n");
fprintf (f, "object {\n");
fprintf (f, " sphere { <0.0 0.0 0.0> 1e6 }\n");
fprintf (f, " texture {\n");
fprintf (f, " ambient 1.0\n");
fprintf (f, " diffuse 0.0\n");
fprintf (f, " color red %4.2f green %4.2f blue %4.2f\n",
col.red, col.green, col.blue);
fprintf (f, " }\n");
fprintf (f, "}\n\n");
break;
case POV20:
fprintf (f, "background { color red %4.2f green %4.2f blue %4.2f }\n\n",
col.red, col.green, col.blue);
break;
case POLYRAY:
fprintf (f, "background <%4.2f, %4.2f, %4.2f>\n\n",
col.red, col.green, col.blue);
break;
}
}
void write_light (FILE *f, char *name, Vector pos, Colour col)
{
switch (format) {
case POV10:
fprintf (f, "/* Light: %s */\n", name);
fprintf (f, "object {\n");
fprintf (f, " light_source { <%.4f %.4f %.4f> color red %4.2f green %4.2f blue %4.2f }\n",
pos[X], pos[Y], pos[Z], col.red, col.green, col.blue);
fprintf (f, "}\n\n");
break;
case POV20:
fprintf (f, "/* Light: %s */\n", name);
fprintf (f, "light_source {\n");
fprintf (f, " <%.4f, %.4f, %.4f> color rgb <%4.2f, %4.2f, %4.2f>\n",
pos[X], pos[Y], pos[Z], col.red, col.green, col.blue);
fprintf (f, "}\n\n");
break;
case VIVID:
fprintf (f, "/* Light: %s */\n", name);
fprintf (f, "light {\n");
fprintf (f, " type point\n");
fprintf (f, " position %.4f %.4f %.4f\n",
pos[X], pos[Y], pos[Z]);
fprintf (f, " color %4.2f %4.2f %4.2f\n",
col.red, col.green, col.blue);
fprintf (f, "}\n\n");
break;
case POLYRAY:
fprintf (f, "// Light: %s\n", name);
fprintf (f, "light <%4.2f, %4.2f, %4.2f>, <%.4f, %.4f, %.4f>\n\n",
col.red, col.green, col.blue, pos[X], pos[Y], pos[Z]);
break;
}
}
void write_spot (FILE *f, char *name, Vector pos, Vector target, Colour col,
float hotspot, float falloff)
{
switch (format) {
case POV10:
fprintf (f, "/* Spotlight: %s */\n", name);
fprintf (f, "object {\n");
fprintf (f, " light_source {\n");
fprintf (f, " <%.4f %.4f %.4f> color red %4.2f green %4.2f blue %4.2f\n",
pos[X], pos[Y], pos[Z],
col.red, col.green, col.blue);
fprintf (f, " spotlight\n");
fprintf (f, " point_at <%.4f %.4f %.4f>\n",
target[X], target[Y], target[Z]);
fprintf (f, " tightness 0\n");
fprintf (f, " radius %.2f\n", 0.5*hotspot);
fprintf (f, " falloff %.2f\n", 0.5*falloff);
fprintf (f, " }\n");
fprintf (f, "}\n\n");
break;
case POV20:
fprintf (f, "/* Spotlight: %s */\n", name);
fprintf (f, "light_source {\n");
fprintf (f, " <%.4f, %.4f, %.4f> color rgb <%4.2f, %4.2f, %4.2f>\n",
pos[X], pos[Y], pos[Z],
col.red, col.green, col.blue);
fprintf (f, " spotlight\n");
fprintf (f, " point_at <%.4f, %.4f, %.4f>\n",
target[X], target[Y], target[Z]);
fprintf (f, " tightness 0\n");
fprintf (f, " radius %.2f\n", 0.5*hotspot);
fprintf (f, " falloff %.2f\n", 0.5*falloff);
fprintf (f, "}\n\n");
break;
case VIVID:
fprintf (f, "/* Spotlight: %s */\n", name);
fprintf (f, "light {\n");
fprintf (f, " type spot\n");
fprintf (f, " position %.4f %.4f %.4f\n",
pos[X], pos[Y], pos[Z]);
fprintf (f, " at %.4f %.4f %.4f\n",
target[X], target[Y], target[Z]);
fprintf (f, " color %4.2f %4.2f %4.2f\n",
col.red, col.green, col.blue);
fprintf (f, " min_angle %.2f\n", hotspot);
fprintf (f, " max_angle %.2f\n", falloff);
fprintf (f, "}\n\n");
break;
case POLYRAY:
fprintf (f, "// Spotlight: %s\n", name);
fprintf (f, "spot_light <%4.2f, %4.2f, %4.2f>, <%.4f, %.4f, %.4f>,\n",
col.red, col.green, col.blue, pos[X], pos[Y], pos[Z]);
fprintf (f, " <%.4f, %.4f, %.4f>, 0.0, %.2f, %.2f\n\n",
target[X], target[Y], target[Z], hotspot/2.0, falloff/2.0);
break;
}
}
void write_fog (FILE *f, Colour col, float dist)
{
if (dist <= 0.0)
return;
switch (format) {
case POV10:
fprintf (f, "fog {\n");
fprintf (f, " color red %4.2f green %4.2f blue %4.2f %.4f\n",
col.red, col.green, col.blue, dist/2.0);
fprintf (f, "}\n\n");
break;
case POV20:
fprintf (f, "fog {\n");
fprintf (f, " color red %4.2f green %4.2f blue %4.2f distance %.4f\n",
col.red, col.green, col.blue, dist/2.0);
fprintf (f, "}\n\n");
break;
}
}
void write_camera (FILE *f, char *name, Vector pos, Vector target,
float lens, float bank)
{
float fov;
cameras++;
fov = findfov (lens);
switch (format) {
case POV10:
/* Comment out multiple cameras */
if (cameras > 1)
fprintf (f, "/*\n");
fprintf (f, "/* Camera: %s */\n", name);
fprintf (f, "camera {\n");
fprintf (f, " location <%.4f %.4f %.4f>\n",
pos[X], pos[Y], pos[Z]);
fprintf (f, " direction <0 %.3f 0>\n", 0.60/tan(0.5*RAD(fov)) );
fprintf (f, " up <0 0 1>\n");
fprintf (f, " sky <0 0 1>\n");
fprintf (f, " right <%.3f 0 0>\n", ASPECT);
fprintf (f, " look_at <%.4f %.4f %.4f>\n",
target[X], target[Y], target[Z]);
if (bank != 0.0)
fprintf (f, " /* Bank angle = %.2f */\n", bank);
fprintf (f, "}\n");
if (cameras > 1)
fprintf (f, "*/\n");
fprintf (f, "\n");
break;
case POV20:
/* Comment out multiple cameras */
if (cameras > 1)
fprintf (f, "/*\n");
fprintf (f, "/* Camera: %s */\n", name);
fprintf (f, "camera {\n");
fprintf (f, " location <%.4f, %.4f, %.4f>\n",
pos[X], pos[Y], pos[Z]);
fprintf (f, " direction <0, %.3f, 0>\n", 0.60/tan(0.5*RAD(fov)) );
fprintf (f, " up <0, 0, 1>\n");
fprintf (f, " sky <0, 0, 1>\n");
fprintf (f, " right <%.3f, 0, 0>\n", ASPECT);
fprintf (f, " look_at <%.4f, %.4f, %.4f>\n",
target[X], target[Y], target[Z]);
if (bank != 0.0)
fprintf (f, " /* Bank angle = %.2f */\n", bank);
fprintf (f, "}\n");
if (cameras > 1)
fprintf (f, "*/\n");
fprintf (f, "\n");
break;
case VIVID:
fprintf (f, "/* Camera: %s */\n", name);
if (cameras > 1)
fprintf (f, "/*\n");
fprintf (f, "studio {\n");
fprintf (f, " from %.4f %.4f %.4f\n",
pos[X], pos[Y], pos[Z]);
fprintf (f, " at %.4f %.4f %.4f\n",
target[X], target[Y], target[Z]);
fprintf (f, " up 0 0 1\n");
fprintf (f, " angle %.2f\n", 1.1*fov);
fprintf (f, " aspect %.3f\n", ASPECT);
fprintf (f, " resolution 320 200\n");
fprintf (f, " antialias none\n");
fprintf (f, "}\n");
if (cameras > 1)
fprintf (f, "*/\n");
fprintf (f, "\n");
break;
case POLYRAY:
if (cameras == 1) {
fprintf (f, "// Camera: %s\n", name);
fprintf (f, "viewpoint {\n");
fprintf (f, " from <%.4f, %.4f, %.4f>\n",
pos[X], pos[Y], pos[Z]);
fprintf (f, " at <%.4f, %.4f, %.4f>\n",
target[X], target[Y], target[Z]);
fprintf (f, " up <0, 0, 1>\n");
fprintf (f, " angle %.2f\n", 0.85*fov);
fprintf (f, " aspect %.3f\n", -(ASPECT));
fprintf (f, " resolution 320, 200\n");
fprintf (f, "}\n");
}
fprintf (f, "\n");
break;
}
}
void write_material (FILE *f, char *mat)
{
MatProp *mprop = LIST_FIND (mprop_list, mat);
if (mprop == NULL)
mprop = &DefaultMaterial;
switch (format) {
case POV10:
write_pov10_material (f, mprop);
break;
case POV20:
write_pov20_material (f, mprop);
break;
case VIVID:
write_vivid_material (f, mprop);
break;
case POLYRAY:
write_polyray_material (f, mprop);
break;
}
}
void write_pov10_material (FILE *f, MatProp *m)
{
float amb = 0.1, dif = 0.9, spec = 1.0;
float dist_white, dist_diff, phong, phong_size;
float red, green, blue;
/* amb = get_ambient (m); */
if (m->self_illum) {
amb = 0.9;
dif = 0.1;
}
dist_white = fabs(1.0 - m->specular.red) +
fabs(1.0 - m->specular.green) +
fabs(1.0 - m->specular.blue);
dist_diff = fabs(m->diffuse.red - m->specular.red) +
fabs(m->diffuse.green - m->specular.green) +
fabs(m->diffuse.blue - m->specular.blue);
phong_size = 0.7*m->shininess;
if (phong_size < 1.0) phong_size = 1.0;
if (phong_size > 30.0)
phong = 1.0;
else
phong = phong_size/30.0;
fprintf (f, "#declare %s = texture {\n", m->name);
fprintf (f, " ambient %.2f\n", amb);
fprintf (f, " diffuse %.2f\n", dif);
fprintf (f, " phong %.2f\n", phong);
fprintf (f, " phong_size %.1f\n", phong_size);
if (dist_diff < dist_white)
fprintf (f, " metallic\n");
if (m->reflection > 0.0) {
spec = (m->specular.red + m->specular.green + m->specular.blue)/3.0;
fprintf (f, " reflection %.3f\n", spec * m->reflection);
}
if (m->transparency > 0.0) {
red = m->diffuse.red;
green = m->diffuse.green;
blue = m->diffuse.blue;
/* Saturate the colour towards white as the transparency increases */
red = ((1.0 - m->transparency) * red) + m->transparency;
green = ((1.0 - m->transparency) * green) + m->transparency;
blue = ((1.0 - m->transparency) * blue) + m->transparency;
fprintf (f, " color red %.3f green %.3f blue %.3f alpha %.3f\n",
red, green, blue, m->transparency);
fprintf (f, " ior 1.1\n");
fprintf (f, " refraction 1.0\n");
}
else
fprintf (f, " color red %.3f green %.3f blue %.3f\n",
m->diffuse.red, m->diffuse.green, m->diffuse.blue);
if (strlen (m->tex_map) > 0) {
fprintf (f, " /* Image map: %s, Strength: %.2f */\n",
m->tex_map, m->tex_strength);
}
if (strlen (m->bump_map) > 0) {
fprintf (f, " /* Bump map: %s, Strength: %.2f */\n",
m->bump_map, m->bump_strength);
}
fprintf (f, "}\n\n");
}
void write_pov20_material (FILE *f, MatProp *m)
{
float amb = 0.1, dif = 0.9, spec = 1.0;
float dist_white, dist_diff, phong, phong_size;
float red, green, blue;
/* amb = get_ambient (m); */
if (m->self_illum) {
amb = 0.9;
dif = 0.1;
}
dist_white = fabs(1.0 - m->specular.red) +
fabs(1.0 - m->specular.green) +
fabs(1.0 - m->specular.blue);
dist_diff = fabs(m->diffuse.red - m->specular.red) +
fabs(m->diffuse.green - m->specular.green) +
fabs(m->diffuse.blue - m->specular.blue);
phong_size = 0.7*m->shininess;
if (phong_size < 1.0) phong_size = 1.0;
if (phong_size > 30.0)
phong = 1.0;
else
phong = phong_size/30.0;
fprintf (f, "#declare %s = texture {\n", m->name);
fprintf (f, " finish {\n");
fprintf (f, " ambient %.2f\n", amb);
fprintf (f, " diffuse %.2f\n", dif);
fprintf (f, " phong %.2f\n", phong);
fprintf (f, " phong_size %.1f\n", phong_size);
if (dist_diff < dist_white)
fprintf (f, " metallic\n");
if (m->reflection > 0.0) {
spec = (m->specular.red + m->specular.green + m->specular.blue)/3.0;
fprintf (f, " reflection %.3f\n", spec * m->reflection);
}
if (m->transparency > 0.0) {
fprintf (f, " ior 1.1\n");
fprintf (f, " refraction 1.0\n");
}
fprintf (f, " }\n");
if (m->transparency > 0.0) {
red = m->diffuse.red;
green = m->diffuse.green;
blue = m->diffuse.blue;
/* Saturate the colour towards white as the transparency increases */
red = ((1.0 - m->transparency) * red) + m->transparency;
green = ((1.0 - m->transparency) * green) + m->transparency;
blue = ((1.0 - m->transparency) * blue) + m->transparency;
fprintf (f, " pigment { rgbf <%.3f, %.3f, %.3f, %.3f> }\n",
red, green, blue, m->transparency);
}
else
fprintf (f, " pigment { rgb <%.3f, %.3f, %.3f> }\n",
m->diffuse.red, m->diffuse.green, m->diffuse.blue);
if (strlen (m->tex_map) > 0) {
fprintf (f, " /* Image map: %s, Strength: %.2f */\n",
m->tex_map, m->tex_strength);
}
if (strlen (m->bump_map) > 0) {
fprintf (f, " /* Bump map: %s, Strength: %.2f */\n",
m->bump_map, m->bump_strength);
}
fprintf (f, "}\n\n");
}
void write_vivid_material (FILE *f, MatProp *m)
{
float amb = 0.1, dif = 0.9;
/* amb = get_ambient (m); */
if (m->self_illum) {
amb = 0.9;
dif = 0.1;
}
if (m->transparency > 0.0) {
dif = dif - m->transparency;
if (dif < 0.0) dif = 0.0;
}
fprintf (f, "#define %s \\ \n", m->name);
fprintf (f, " surface { \\ \n");
fprintf (f, " ambient %.3f %.3f %.3f \\ \n",
amb*m->ambient.red, amb*m->ambient.green, amb*m->ambient.blue);
fprintf (f, " diffuse %.3f %.3f %.3f \\ \n",
dif*m->diffuse.red, dif*m->diffuse.green, dif*m->diffuse.blue);
fprintf (f, " shine %.1f %.3f %.3f %.3f \\ \n",
0.7*m->shininess, m->specular.red, m->specular.green, m->specular.blue);
if (m->transparency > 0.0) {
fprintf (f, " transparent %.3f*white \\ \n", 1.0 - (1.0 - m->transparency)/14.0);
fprintf (f, " ior 1.1 \\ \n");
}
if (m->reflection > 0.0)
fprintf (f, " specular %.3f*white \\ \n", m->reflection);
if (strlen (m->tex_map) > 0) {
fprintf (f, " /* Image map: %s, Strength: %.2f */ \\ \n",
m->tex_map, m->tex_strength);
}
if (strlen (m->bump_map) > 0) {
fprintf (f, " /* Bump map: %s, Strength: %.2f */ \\ \n",
m->bump_map, m->bump_strength);
}
fprintf (f, " }\n\n");
}
void write_polyray_material (FILE *f, MatProp *m)
{
float amb = 0.1, dif = 0.9, spec;
/* amb = get_ambient (m); */
if (m->self_illum) {
amb = 0.9;
dif = 0.1;
}
if (m->transparency > 0.0) {
dif = dif - m->transparency;
if (dif < 0.0) dif = 0.0;
}
if (m->shininess == 0.0)
m->shininess = 0.1;
if (m->shininess > 40.0)
spec = 1.0;
else
spec = m->shininess/40.0;
fprintf (f, "define %s\n", m->name);
fprintf (f, "texture {\n");
fprintf (f, " surface {\n");
fprintf (f, " ambient <%.3f, %.3f, %.3f>, %.1f\n",
m->ambient.red, m->ambient.green, m->ambient.blue, amb);
fprintf (f, " diffuse <%.3f, %.3f, %.3f>, %.1f\n",
m->diffuse.red, m->diffuse.green, m->diffuse.blue, dif);
fprintf (f, " specular <%.3f, %.3f, %.3f>, %.2f\n",
m->specular.red, m->specular.green, m->specular.blue, spec);
fprintf (f, " microfacet Reitz %.1f\n", 400.0/m->shininess);
if (m->transparency > 0.0)
fprintf (f, " transmission %.3f, 1.1\n", m->transparency);
if (m->reflection > 0.0)
fprintf (f, " reflection %.3f\n", m->reflection);
if (strlen (m->tex_map) > 0) {
fprintf (f, " // Image map: %s, Strength: %.2f\n",
m->tex_map, m->tex_strength);
}
if (strlen (m->bump_map) > 0) {
fprintf (f, " // Bump map: %s, Strength: %.2f\n",
m->bump_map, m->bump_strength);
}
fprintf (f, " }\n");
fprintf (f, "}\n\n");
}
/* Write a mesh file */
void write_mesh (FILE *f, Mesh *mesh)
{
int i;
Vector va, vb, vc;
Summary *new_summary;
Matrix obj_matrix;
if (mesh->hidden || LIST_FIND (excl_list, mesh->name))
return;
/* Add this object's stats to the summary */
new_summary = malloc (sizeof(*new_summary));
if (new_summary == NULL)
abortmsg ("Out of memory adding summary", 1);
strcpy (new_summary->name, mesh->name);
vect_copy (new_summary->center, mesh->center);
vect_copy (new_summary->lengths, mesh->lengths);
LIST_INSERT (summary, new_summary);
/* Compute the object transformation matrix for animations */
if (ani_matrix != NULL) {
mat_copy (obj_matrix, *ani_matrix);
if (vue_version > 2.0)
mat_mult (obj_matrix, mesh->invmatrix, obj_matrix);
}
switch (format) {
case POV10:
case POV20:
case VIVID:
case POLYRAY:
opt_set_vert (mesh->vertices);
for (i = 0; i < mesh->faces; i++) {
vect_copy (va, mesh->vertex[mesh->face[i].a]);
vect_copy (vb, mesh->vertex[mesh->face[i].b]);
vect_copy (vc, mesh->vertex[mesh->face[i].c]);
opt_set_texture (mesh->mtl[i]->name);
opt_add_tri (va[X], va[Y], va[Z], vc[X], vc[Y], vc[Z],
vb[X], vb[Y], vb[Z]);
}
fclose (f);
if (ani_matrix != NULL)
opt_set_transform (obj_matrix);
if (box_all || LIST_FIND (box_list, mesh->name))
opt_write_box (mesh->name);
else
opt_write_file (mesh->name);
f = fopen (outname, "a");
break;
case RAW:
fprintf (f, "%s\n", mesh->name);
for (i = 0; i < mesh->faces; i++) {
vect_copy (va, mesh->vertex[mesh->face[i].a]);
vect_copy (vb, mesh->vertex[mesh->face[i].b]);
vect_copy (vc, mesh->vertex[mesh->face[i].c]);
if (ani_matrix != NULL) {
vect_transform (va, va, obj_matrix);
vect_transform (vb, vb, obj_matrix);
vect_transform (vc, vc, obj_matrix);
}
fprintf (f, "%f %f %f %f %f %f %f %f %f\n",
va[X], va[Y], va[Z], vb[X], vb[Y], vb[Z],
vc[X], vc[Y], vc[Z]);
}
break;
}
}
/* Parses an object transformation and returns a pointer to the
newly allocated transformation */
Transform *parse_transform (char *string)
{
Transform *t;
char *token;
int token_no;
t = (Transform *)malloc (sizeof(*t));
if (t == NULL)
abortmsg ("Out of memory allocating transform", 1);
mat_identity (t->matrix);
token = parse_string (string);
token_no = 0;
while (strlen(token) > 0) {
switch (token_no) {
case 0: break;
case 1: strcpy (t->name, token); break;
case 2: t->matrix[0][0] = atof(token); break;
case 3: t->matrix[0][1] = atof(token); break;
case 4: t->matrix[0][2] = atof(token); break;
case 5: t->matrix[1][0] = atof(token); break;
case 6: t->matrix[1][1] = atof(token); break;
case 7: t->matrix[1][2] = atof(token); break;
case 8: t->matrix[2][0] = atof(token); break;
case 9: t->matrix[2][1] = atof(token); break;
case 10: t->matrix[2][2] = atof(token); break;
case 11: t->matrix[3][0] = atof(token); break;
case 12: t->matrix[3][1] = atof(token); break;
case 13: t->matrix[3][2] = atof(token); break;
default: abortmsg ("Error parsing transform", 1);
}
token = parse_string (NULL);
token_no++;
}
t->matrix[0][3] = 0.0;
t->matrix[1][3] = 0.0;
t->matrix[2][3] = 0.0;
t->matrix[3][3] = 1.0;
cleanup_name (t->name);
return t;
}
/* Parses a morph command and returns a pointer to the
newly allocated morph */
Morph *parse_morph (char *string)
{
Morph *m;
char *token;
int i, token_no;
m = (Morph *)malloc (sizeof(*m));
if (m == NULL)
abortmsg ("Out of memory allocating morph", 1);
mat_identity (m->matrix);
token = parse_string (string);
token = parse_string (NULL);
strcpy (m->name, token);
token = parse_string (NULL);
m->count = atoi (token);
if (strlen (m->name) == 0 || m->count < 1 || m->count > 4)
abortmsg ("Error parsing morph command", 1);
cleanup_name (m->name);
for (i = 0; i < m->count; i++) {
token = parse_string (NULL);
strcpy (m->names[i], token);
token = parse_string (NULL);
m->weight[i] = atof (token);
if (strlen (m->names[i]) == 0)
abortmsg ("Error parsing morph command", 1);
cleanup_name (m->names[i]);
}
token = parse_string (NULL);
token_no = 0;
while (strlen(token) > 0) {
switch (token_no) {
case 0: m->matrix[0][0] = atof(token); break;
case 1: m->matrix[0][1] = atof(token); break;
case 2: m->matrix[0][2] = atof(token); break;
case 3: m->matrix[1][0] = atof(token); break;
case 4: m->matrix[1][1] = atof(token); break;
case 5: m->matrix[1][2] = atof(token); break;
case 6: m->matrix[2][0] = atof(token); break;
case 7: m->matrix[2][1] = atof(token); break;
case 8: m->matrix[2][2] = atof(token); break;
case 9: m->matrix[3][0] = atof(token); break;
case 10: m->matrix[3][1] = atof(token); break;
case 11: m->matrix[3][2] = atof(token); break;
default: abortmsg ("Error parsing morph command", 1);
}
token = parse_string (NULL);
token_no++;
}
m->matrix[0][3] = 0.0;
m->matrix[1][3] = 0.0;
m->matrix[2][3] = 0.0;
m->matrix[3][3] = 1.0;
return m;
}
/* Parses an omni light and returns a pointer to the
newly allocated light */
OmniLight *parse_omnilight (char *string)
{
OmniLight *o;
char *token;
int token_no;
o = (OmniLight *)malloc (sizeof(*o));
if (o == NULL)
abortmsg ("Out of memory allocating omnilight", 1);
token = parse_string (string);
token_no = 0;
while (strlen(token) > 0) {
switch (token_no) {
case 0: break;
case 1: strcpy (o->name, token); break;
case 2: o->pos[X] = atof (token); break;
case 3: o->pos[Y] = atof (token); break;
case 4: o->pos[Z] = atof (token); break;
case 5: o->col.red = atof (token); break;
case 6: o->col.green = atof (token); break;
case 7: o->col.blue = atof (token); break;
default: abortmsg ("Error parsing omnilight", 1);
}
token = parse_string (NULL);
token_no++;
}
cleanup_name (o->name);
return o;
}
/* Parses a spotlight and returns a pointer to the
newly allocated spotlight */
Spotlight *parse_spotlight (char *string)
{
Spotlight *s;
char *token;
int token_no;
s = (Spotlight *)malloc (sizeof(*s));
if (s == NULL)
abortmsg ("Out of memory allocating spotlight", 1);
token = parse_string (string);
token_no = 0;
while (strlen(token) > 0) {
switch (token_no) {
case 0: break;
case 1: strcpy (s->name, token); break;
case 2: s->pos[X] = atof (token); break;
case 3: s->pos[Y] = atof (token); break;
case 4: s->pos[Z] = atof (token); break;
case 5: s->target[X] = atof (token); break;
case 6: s->target[Y] = atof (token); break;
case 7: s->target[Z] = atof (token); break;
case 8: s->col.red = atof (token); break;
case 9: s->col.green = atof (token); break;
case 10: s->col.blue = atof (token); break;
case 11: s->hotspot = atof (token); break;
case 12: s->falloff = atof (token); break;
case 13: break;
default: abortmsg ("Error parsing spotlight", 1);
}
token = parse_string (NULL);
token_no++;
}
cleanup_name (s->name);
return s;
}
/* Parses a camera command and returns a pointer to the
newly allocated camera */
Camera *parse_camera (char *string)
{
Camera *c;
char *token;
int token_no;
c = (Camera *)malloc (sizeof(*c));
if (c == NULL)
abortmsg ("Out of memory allocating camera", 1);
token = parse_string (string);
token_no = 0;
while (strlen(token) > 0) {
switch (token_no) {
case 0: break;
case 1: c->pos[X] = atof (token); break;
case 2: c->pos[Y] = atof (token); break;
case 3: c->pos[Z] = atof (token); break;
case 4: c->target[X] = atof (token); break;
case 5: c->target[Y] = atof (token); break;
case 6: c->target[Z] = atof (token); break;
case 7: c->bank = atof (token); break;
case 8: c->lens = atof (token); break;
default: abortmsg ("Error parsing camera", 1);
}
token = parse_string (NULL);
token_no++;
}
return c;
}
/* Load the transforms, camera movements, etc for the specified frame */
void read_frame (char *filename, int frame_no)
{
FILE *f;
char fname[80];
char string[256];
char *token;
/* Open the .vue file */
strcpy (fname, filename); /* Make a copy we can mess with */
add_ext (fname, "vue", 0);
f = fopen (fname, "r");
if (f == NULL) {
printf ("Error opening file '%s'\n", fname);
exit(1);
}
/* Load the specified frame */
find_frame (f, frame_no);
while (fgets (string, 256, f) != NULL) {
token = parse_string (string);
if (strcmp (token, "frame") == 0)
break;
else if (strcmp (token, "transform") == 0) {
LIST_INSERT (trans_list, parse_transform (string));
}
else if (strcmp (token, "morph") == 0) {
LIST_INSERT (morph_list, parse_morph (string));
}
else if (strcmp (token, "light") == 0) {
LIST_INSERT (omni_list, parse_omnilight (string));
}
else if (strcmp (token, "spotlight") == 0) {
LIST_INSERT (spot_list, parse_spotlight (string));
}
else if (strcmp (token, "camera") == 0) {
if (cam_list != NULL)
abortmsg ("ERROR - Multiple cameras in .vue file", 1);
LIST_INSERT (cam_list, parse_camera (string));
}
else if (strcmp (token, "top") == 0)
abortmsg ("ERROR - Orthogonal viewports are not supported", 1);
else if (strcmp (token, "bottom") == 0)
abortmsg ("ERROR - Orthogonal viewports are not supported", 1);
else if (strcmp (token, "left") == 0)
abortmsg ("ERROR - Orthogonal viewports are not supported", 1);
else if (strcmp (token, "right") == 0)
abortmsg ("ERROR - Orthogonal viewports are not supported", 1);
else if (strcmp (token, "front") == 0)
abortmsg ("ERROR - Orthogonal viewports are not supported", 1);
else if (strcmp (token, "back") == 0)
abortmsg ("ERROR - Orthogonal viewports are not supported", 1);
else if (strcmp (token, "user") == 0)
abortmsg ("ERROR - User viewports are not supported", 1);
}
fclose(f);
}
void find_frame (FILE *f, int frame_no)
{
char string[256];
char *token;
int frame = 0;
/* Search the .vue file for the required frame */
while (1) {
/* Read the next line in the file */
if (fgets (string, 256, f) == NULL) {
printf ("Unable to locate frame #%d in .vue file\n", frame_no);
exit(1);
}
token = parse_string (string);
if (strcmp (token, "frame") == 0) {
token = parse_string (NULL);
if (strlen(token) == 0) {
printf ("Unable to locate frame #%d in .vue file\n", frame_no);
exit(1);
}
frame = atoi (token);
if (frame == frame_no)
break;
}
else if (strcmp (token, "VERSION") == 0) {
token = parse_string (NULL);
vue_version = atoi(token) / 100.0;
}
}
}
void save_animation()
{
Mesh *mesh, *master;
Transform *t;
Morph *m;
Vector temp;
int i, j;
printf ("\n");
for (t = trans_list; t != NULL; t = t->next) {
printf ("Transforming object: %s\n", t->name);
ani_matrix = &(t->matrix);
mesh = LIST_FIND (mesh_list, t->name);
if (mesh == NULL) {
printf ("Unable to locate mesh object %s\n", t->name);
exit(1);
}
write_mesh (out, mesh);
}
for (m = morph_list; m != NULL; m = m->next) {
printf ("Morphing object: %s\n", m->name);
ani_matrix = &(m->matrix);
mesh = LIST_FIND (mesh_list, m->name);
if (mesh == NULL) {
printf ("Unable to locate mesh object %s\n", m->name);
exit(1);
}
/* Make a copy to mess with */
master = copy_mesh (mesh);
master->hidden = FALSE;
strcpy (master->name, m->name);
for (i = 0; i < master->vertices; i++)
vect_init (master->vertex[i], 0.0, 0.0, 0.0);
for (i = 0; i < m->count; i++) {
mesh = LIST_FIND (mesh_list, m->names[i]);
if (mesh == NULL) {
printf ("Unable to locate mesh object %s\n", m->names[0]);
exit(1);
}
if (mesh->vertices != master->vertices)
abortmsg ("Morphed objects do not contain the same number of vertices", 1);
if (mesh->faces != master->faces)
abortmsg ("Morphed objects do not contain the same number of faces", 1);
for (j = 0; j < master->vertices; j++) {
vect_transform (temp, mesh->vertex[j], mesh->invmatrix);
vect_scale (temp, temp, m->weight[i]);
vect_add (master->vertex[j], master->vertex[j], temp);
}
}
for (i = 0; i < master->vertices; i++)
vect_transform (master->vertex[i], master->vertex[i], master->matrix);
write_mesh (out, master);
free_mesh_data (master);
free (master);
}
for (mesh = mesh_list; mesh != NULL; mesh = mesh->next)
free_mesh_data (mesh);
}
/* Create a new mesh */
Mesh *create_mesh (char *name, int vertices, int faces)
{
Mesh *new_mesh;
new_mesh = malloc (sizeof(*new_mesh));
if (new_mesh == NULL)
abortmsg ("Out of memory allocating mesh", 1);
strcpy (new_mesh->name, name);
new_mesh->vertices = vertices;
if (vertices <= 0)
new_mesh->vertex = NULL;
else {
new_mesh->vertex = malloc (vertices * sizeof(*new_mesh->vertex));
if (new_mesh->vertex == NULL)
abortmsg ("Out of memory allocating mesh", 1);
}
new_mesh->faces = faces;
if (faces <= 0) {
new_mesh->face = NULL;
new_mesh->mtl = NULL;
}
else {
new_mesh->face = malloc (faces * sizeof(*new_mesh->face));
if (new_mesh->face == NULL)
abortmsg ("Out of memory allocating mesh", 1);
new_mesh->mtl = malloc (faces * sizeof(*new_mesh->mtl));
if (new_mesh->mtl == NULL)
abortmsg ("Out of memory allocating mesh", 1);
}
vect_init (new_mesh->center, 0.0, 0.0, 0.0);
vect_init (new_mesh->lengths, 0.0, 0.0, 0.0);
mat_identity (new_mesh->matrix);
mat_identity (new_mesh->invmatrix);
new_mesh->hidden = FALSE;
new_mesh->shadow = TRUE;
return new_mesh;
}
/* Creates a duplicate copy of a mesh */
Mesh *copy_mesh (Mesh *mesh)
{
Mesh *new_mesh;
int i;
new_mesh = create_mesh (mesh->name, mesh->vertices, mesh->faces);
if (new_mesh == NULL)
abortmsg ("Out of memory allocating mesh", 1);
for (i = 0; i < mesh->vertices; i++)
vect_copy (new_mesh->vertex[i], mesh->vertex[i]);
for (i = 0; i < mesh->faces; i++) {
new_mesh->face[i] = mesh->face[i];
new_mesh->mtl[i] = mesh->mtl[i];
}
mat_copy (new_mesh->matrix, mesh->matrix);
mat_copy (new_mesh->invmatrix, mesh->invmatrix);
vect_copy (new_mesh->center, mesh->center);
vect_copy (new_mesh->lengths, mesh->lengths);
new_mesh->hidden = mesh->hidden;
new_mesh->shadow = mesh->shadow;
return new_mesh;
}
/* Free all data associated with mesh object */
void free_mesh_data (Mesh *mesh)
{
if (mesh->vertex != NULL)
free (mesh->vertex);
if (mesh->face != NULL)
free (mesh->face);
if (mesh->mtl != NULL)
free (mesh->mtl);
}
/* Updates the center (pivot) point of the mesh */
void update_limits (Mesh *mesh)
{
Vector vmin = {+MAXFLOAT, +MAXFLOAT, +MAXFLOAT};
Vector vmax = {-MAXFLOAT, -MAXFLOAT, -MAXFLOAT};
int i;
for (i = 0; i < mesh->vertices; i++) {
vect_min (vmin, vmin, mesh->vertex[i]);
vect_max (vmax, vmax, mesh->vertex[i]);
}
vect_add (mesh->center, vmin, vmax);
vect_scale (mesh->center, mesh->center, 0.5);
vect_sub (mesh->lengths, vmax, vmin);
}
/* Return the sub-string of 'str' that is before 'target' */
char *before (char *str, char *target)
{
static char result[256];
char *search;
strncpy (result, str, 256);
result[255] = '\0';
search = strstr (result, target);
if (search != NULL)
*search = '\0';
return result;
}
/* Return the sub-string of 'str' that is after 'target' */
char *after (char *str, char *target)
{
static char result[256];
char *search;
search = strstr (str, target);
if (search == NULL)
strncpy (result, "", 256);
else
strncpy (result, search + strlen(target), 256);
result[255] = '\0';
return result;
}
/* Return the sub-string of 'str' that is between 'target1' and 'target2' */
char *between (char *str, char *target1, char *target2)
{
static char result[256];
strcpy (result, after (str, target1));
strcpy (result, before (result, target2));
return result;
}
/* Works like the C strtok() function except that it can handle */
/* tokens enclosed in double quotes */
char *parse_string (char *str)
{
static char result[256];
static char *p;
char QUOTE = '\"';
int index;
strcpy (result, "");
index = 0;
if (str != NULL)
p = str;
/* Find the start of the next token */
while (isspace (*p))
p++;
if (*p == QUOTE) {
p++;
while (*p != '\0' && *p != QUOTE)
result[index++] = *p++;
if (*p == QUOTE)
p++;
}
else {
while (*p != '\0' && !isspace(*p))
result[index++] = *p++;
}
result[index] = '\0';
return result;
}
/* Convert character 'c' to upper case */
char upcase (char c)
{
if (c >= 'a' && c <= 'z')
c = c - 'a' + 'A';
return c;
}
float colour_intens (Colour *colour)
{
return sqrt (colour->red * colour->red +
colour->green * colour->green +
colour->blue * colour->blue);
}
void parse_file()
{
Chunk chunk;
start_chunk(&chunk);
if (chunk.tag == 0x4D4D)
parse_3ds (&chunk);
else
abortmsg ("Error: Input file is not .3DS format", 1);
end_chunk (&chunk);
}
void parse_3ds (Chunk *mainchunk)
{
Chunk chunk;
do {
start_chunk (&chunk);
if (chunk.end <= mainchunk->end) {
switch (chunk.tag) {
case 0x3D3D: parse_mdata (&chunk);
break;
}
}
end_chunk (&chunk);
} while (chunk.end <= mainchunk->end);
}
void parse_mdata (Chunk *mainchunk)
{
Chunk chunk;
Colour bgnd_colour;
do {
start_chunk (&chunk);
if (chunk.end <= mainchunk->end) {
switch (chunk.tag) {
case 0x2100: parse_colour (&global_amb);
break;
case 0x1200: parse_colour (&bgnd_colour);
break;
case 0x1201: write_bgsolid (out, bgnd_colour);
break;
case 0x2200: parse_fog (&chunk);
break;
case 0x2210: parse_fog_bgnd();
break;
case 0x2201: write_fog (out, fog_colour, fog_distance);
break;
case 0xAFFF: parse_mat_entry (&chunk);
break;
case 0x4000: parse_named_object (&chunk);
break;
}
}
end_chunk (&chunk);
} while (chunk.end <= mainchunk->end);
}
void parse_fog (Chunk *mainchunk)
{
Chunk chunk;
(void)read_float();
(void)read_float();
fog_distance = read_float();
(void)read_float();
parse_colour (&fog_colour);
do {
start_chunk (&chunk);
if (chunk.end <= mainchunk->end) {
switch (chunk.tag) {
case 0x2210: parse_fog_bgnd();
break;
}
}
end_chunk (&chunk);
} while (chunk.end <= mainchunk->end);
}
void parse_fog_bgnd()
{
}
void parse_mat_entry (Chunk *mainchunk)
{
Chunk chunk;
MatProp *mprop;
mprop = create_mprop();
do {
start_chunk (&chunk);
if (chunk.end <= mainchunk->end) {
switch (chunk.tag) {
case 0xA000: strcpy (mprop->name, read_string());
cleanup_name (mprop->name);
break;
case 0xA010: parse_colour (&mprop->ambient);
break;
case 0xA020: parse_colour (&mprop->diffuse);
break;
case 0xA030: parse_colour (&mprop->specular);
break;
case 0xA040: mprop->shininess = 100.0*parse_percentage();
break;
case 0xA050: mprop->transparency = parse_percentage();
break;
case 0xA080: mprop->self_illum = TRUE;
break;
case 0xA220: mprop->reflection = parse_percentage();
(void)parse_mapname (&chunk);
break;
case 0xA310: if (mprop->reflection == 0.0)
mprop->reflection = 1.0;
break;
case 0xA200: mprop->tex_strength = parse_percentage();
strcpy (mprop->tex_map, parse_mapname (&chunk));
break;
case 0xA230: mprop->bump_strength = parse_percentage();
strcpy (mprop->bump_map, parse_mapname (&chunk));
break;
}
}
end_chunk (&chunk);
} while (chunk.end <= mainchunk->end);
LIST_INSERT (mprop_list, mprop);
}
char *parse_mapname (Chunk *mainchunk)
{
static char name[80] = "";
Chunk chunk;
do {
start_chunk (&chunk);
if (chunk.end <= mainchunk->end) {
switch (chunk.tag) {
case 0xA300: strcpy (name, read_string());
break;
}
}
end_chunk (&chunk);
} while (chunk.end <= mainchunk->end);
return name;
}
void parse_named_object (Chunk *mainchunk)
{
Chunk chunk;
strcpy (obj_name, read_string());
cleanup_name (obj_name);
printf ("Working on: %s\n", obj_name);
mesh = NULL;
do {
start_chunk (&chunk);
if (chunk.end <= mainchunk->end) {
switch (chunk.tag) {
case 0x4100: parse_n_tri_object (&chunk);
break;
case 0x4600: parse_n_direct_light (&chunk);
break;
case 0x4700: parse_n_camera();
break;
case 0x4010: if (mesh != NULL) mesh->hidden = TRUE;
break;
case 0x4012: if (mesh != NULL) mesh->shadow = FALSE;
break;
}
}
end_chunk (&chunk);
} while (chunk.end <= mainchunk->end);
if (mesh != NULL) {
update_limits (mesh);
if (frame >= 0)
LIST_INSERT (mesh_list, mesh);
else {
write_mesh (out, mesh);
free_mesh_data (mesh);
free (mesh);
}
}
}
void parse_n_tri_object (Chunk *mainchunk)
{
Chunk chunk;
mesh = create_mesh (obj_name, 0, 0);
do {
start_chunk (&chunk);
if (chunk.end <= mainchunk->end) {
switch (chunk.tag) {
case 0x4110: parse_point_array();
break;
case 0x4120: parse_face_array (&chunk);
break;
case 0x4160: parse_mesh_matrix();
break;
}
}
end_chunk (&chunk);
} while (chunk.end <= mainchunk->end);
}
void parse_point_array()
{
int i;
mesh->vertices = read_word();
mesh->vertex = malloc (mesh->vertices * sizeof(*(mesh->vertex)));
if (mesh->vertex == NULL)
abortmsg ("Out of memory allocating mesh", 1);
for (i = 0; i < mesh->vertices; i++)
read_point (mesh->vertex[i]);
}
void parse_face_array (Chunk *mainchunk)
{
Chunk chunk;
int i;
mesh->faces = read_word();
mesh->face = malloc (mesh->faces * sizeof(*(mesh->face)));
if (mesh->face == NULL)
abortmsg ("Out of memory allocating mesh", 1);
mesh->mtl = malloc (mesh->faces * sizeof(*(mesh->mtl)));
if (mesh->mtl == NULL)
abortmsg ("Out of memory allocating mesh", 1);
for (i = 0; i < mesh->faces; i++) {
mesh->face[i].a = read_word();
mesh->face[i].b = read_word();
mesh->face[i].c = read_word();
(void)read_word();
mesh->mtl[i] = NULL;
}
do {
start_chunk (&chunk);
if (chunk.end <= mainchunk->end) {
switch (chunk.tag) {
case 0x4130: parse_msh_mat_group();
break;
case 0x4150: parse_smooth_group();
break;
}
}
end_chunk (&chunk);
} while (chunk.end <= mainchunk->end);
for (i = 0; i < mesh->faces; i++) {
if (mesh->mtl[i] == NULL)
mesh->mtl[i] = update_materials ("Default", 0);
}
}
void parse_msh_mat_group()
{
Material *new_mtl;
char mtlname[80];
int mtlcnt;
int i, face;
strcpy (mtlname, read_string());
cleanup_name (mtlname);
new_mtl = update_materials (mtlname, 0);
mtlcnt = read_word();
for (i = 0; i < mtlcnt; i++) {
face = read_word();
mesh->mtl[face] = new_mtl;
}
}
void parse_smooth_group()
{
}
void parse_mesh_matrix()
{
int i, j;
if (mesh != NULL) {
for (i = 0; i < 4; i++) {
for (j = 0; j < 3; j++)
mesh->matrix[i][j] = read_float();
}
mat_inv (mesh->invmatrix, mesh->matrix);
}
}
void parse_n_direct_light (Chunk *mainchunk)
{
Chunk chunk;
Spotlight *s;
OmniLight *o;
int light_off = FALSE;
int spot_flag = FALSE;
read_point (pos);
parse_colour (&col);
do {
start_chunk (&chunk);
if (chunk.end <= mainchunk->end) {
switch (chunk.tag) {
case 0x4620: light_off = TRUE;
break;
case 0x4610: parse_dl_spotlight();
spot_flag = TRUE;
break;
}
}
end_chunk (&chunk);
} while (chunk.end <= mainchunk->end);
if (light_off)
return;
if (!spot_flag) {
if (frame >= 0) {
o = LIST_FIND (omni_list, obj_name);
if (o != NULL) {
pos[X] = o->pos[X];
pos[Y] = o->pos[Y];
pos[Z] = o->pos[Z];
col = o->col;
}
}
write_light (out, obj_name, pos, col);
}
else {
if (frame >= 0) {
s = LIST_FIND (spot_list, obj_name);
if (s != NULL) {
pos[X] = s->pos[X];
pos[Y] = s->pos[Y];
pos[Z] = s->pos[Z];
target[X] = s->target[X];
target[Y] = s->target[Y];
target[Z] = s->target[Z];
col = s->col;
hotspot = s->hotspot;
falloff = s->falloff;
}
}
if (falloff <= 0.0)
falloff = 180.0;
if (hotspot <= 0.0)
hotspot = 0.7*falloff;
write_spot (out, obj_name, pos, target, col, hotspot, falloff);
}
}
void parse_dl_spotlight()
{
read_point (target);
hotspot = read_float();
falloff = read_float();
}
void parse_n_camera()
{
float bank;
float lens;
read_point (pos);
read_point (target);
bank = read_float();
lens = read_float();
if (frame >= 0 && cam_list != NULL) {
pos[X] = cam_list->pos[X];
pos[Y] = cam_list->pos[Y];
pos[Z] = cam_list->pos[Z];
target[X] = cam_list->target[X];
target[Y] = cam_list->target[Y];
target[Z] = cam_list->target[Z];
lens = cam_list->lens;
bank = cam_list->bank;
}
write_camera (out, obj_name, pos, target, lens, bank);
}
void parse_colour (Colour *colour)
{
Chunk chunk;
Colour_24 colour_24;
start_chunk (&chunk);
switch (chunk.tag) {
case 0x0010: parse_colour_f (colour);
break;
case 0x0011: parse_colour_24 (&colour_24);
colour->red = colour_24.red/255.0;
colour->green = colour_24.green/255.0;
colour->blue = colour_24.blue/255.0;
break;
default: abortmsg ("Error parsing colour", 1);
}
end_chunk (&chunk);
}
void parse_colour_f (Colour *colour)
{
colour->red = read_float();
colour->green = read_float();
colour->blue = read_float();
}
void parse_colour_24 (Colour_24 *colour)
{
colour->red = read_byte();
colour->green = read_byte();
colour->blue = read_byte();
}
float parse_percentage()
{
Chunk chunk;
float percent = 0.0;
start_chunk (&chunk);
switch (chunk.tag) {
case 0x0030: percent = parse_int_percentage()/100.0;
break;
case 0x0031: percent = parse_float_percentage();
break;
default: printf ("WARNING: Error parsing percentage");
}
end_chunk (&chunk);
return percent;
}
short parse_int_percentage()
{
word percent = read_word();
return percent;
}
float parse_float_percentage()
{
float percent = read_float();
return percent;
}
void start_chunk (Chunk *chunk)
{
chunk->start = ftell(in);
chunk->tag = read_word();
chunk->length = read_dword();
chunk->end = chunk->start + chunk->length;
}
void end_chunk (Chunk *chunk)
{
fseek (in, chunk->end, 0);
}
byte read_byte()
{
byte data;
data = fgetc (in);
return data;
}
word read_word()
{
/*
word data;
fread (&data, 2, 1, in);
*/
word newdata;
byte byte0;
byte byte1;
byte0 = fgetc (in);
byte1 = fgetc (in);
newdata = ((((unsigned word)byte1)<<8)|((unsigned word)byte0));
return newdata;
}
dword read_dword()
{
/*
dword data;
fread (&data, 4, 1, in);
*/
dword newdata;
byte byte0;
byte byte1;
byte byte2;
byte byte3;
byte0 = fgetc (in);
byte1 = fgetc (in);
byte2 = fgetc (in);
byte3 = fgetc (in);
/*
newdata = ((byte3<<24)|(byte2<<16)|(byte1<<8)|byte0);
*/
newdata = ((((unsigned long)byte3)<<24)|(((unsigned long)byte2)<<16)|(((unsigned long)byte1)<<8)|((unsigned long)byte0));
return newdata;
}
float read_float()
{
/*
float data;
fread (&data, 4, 1, in);
return data;
*/
long data;
float *pf;
float value;
byte byte0;
byte byte1;
byte byte2;
byte byte3;
byte0 = fgetc (in);
byte1 = fgetc (in);
byte2 = fgetc (in);
byte3 = fgetc (in);
data = ((((unsigned long)byte3)<<24)|(((unsigned long)byte2)<<16)|(((unsigned long)byte1)<<8)|((unsigned long)byte0));
pf = (float *)&data;
value = *pf;
/*
printf ("Value: %f",value);
*/
return value;
}
void read_point (Vector v)
{
v[X] = read_float();
v[Y] = read_float();
v[Z] = read_float();
}
char *read_string()
{
static char string[80];
int i;
for (i = 0; i < 80; i++) {
string[i] = read_byte();
if (string[i] == '\0')
break;
}
return string;
}
float findfov (float lens)
{
static float lens_table[13] =
{ 15.0, 17.0, 24.0, 35.0, 50.0, 85.0, 100.0, 135.0, 200.0,
500.0, 625.0, 800.0, 1000.0 };
static float fov_table[13] =
{ 115.0, 102.0, 84.0, 63.0, 46.0, 28.0, 24.0, 18.0,
12.0, 5.0, 4.0, 3.125, 2.5 };
float fov, f1, f2, l1, l2;
int i;
if (lens < 15.0)
lens = 15.0;
else if (lens > 1000.0)
lens = 1000.0;
for (i = 0; i < 13; i++)
if (lens < lens_table[i])
break;
if (i == 13)
i = 12;
else if (i == 0)
i = 1;
f1 = fov_table[i-1];
f2 = fov_table[i];
l1 = lens_table[i-1];
l2 = lens_table[i];
fov = f1 + (lens - l1) * (f2 - f1) / (l2 - l1);
return fov;
}