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/*
* The 3D Studio File Format Library
* Copyright (C) 1996-2001 by J.E. Hoffmann <je-h@gmx.net>
* All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 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 Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
* $Id: file.c,v 1.23 2005/01/11 10:20:36 madmac Exp $
*/
#define LIB3DS_EXPORT
#include <lib3ds/file.h>
#include <lib3ds/chunk.h>
#include <lib3ds/io.h>
#include <lib3ds/material.h>
#include <lib3ds/mesh.h>
#include <lib3ds/camera.h>
#include <lib3ds/light.h>
#include <lib3ds/node.h>
#include <lib3ds/vector.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
#include <config.h>
#ifdef WITH_DMALLOC
#include <dmalloc.h>
#endif
/*!
* \defgroup file Files
*
* \author J.E. Hoffmann <je-h@gmx.net>
*/
static Lib3dsBool
fileio_error_func(void *self)
{
FILE *f = (FILE*)self;
return(ferror(f)!=0);
}
static long
fileio_seek_func(void *self, long offset, Lib3dsIoSeek origin)
{
FILE *f = (FILE*)self;
int o;
switch (origin) {
case LIB3DS_SEEK_SET:
o = SEEK_SET;
break;
case LIB3DS_SEEK_CUR:
o = SEEK_CUR;
break;
case LIB3DS_SEEK_END:
o = SEEK_END;
break;
default:
ASSERT(0);
return(0);
}
return (fseek(f, offset, o));
}
static long
fileio_tell_func(void *self)
{
FILE *f = (FILE*)self;
return(ftell(f));
}
static int
fileio_read_func(void *self, Lib3dsByte *buffer, int size)
{
FILE *f = (FILE*)self;
return(fread(buffer, 1, size, f));
}
static int
fileio_write_func(void *self, const Lib3dsByte *buffer, int size)
{
FILE *f = (FILE*)self;
return(fwrite(buffer, 1, size, f));
}
/*!
* Loads a .3DS file from disk into memory.
*
* \param filename The filename of the .3DS file
*
* \return A pointer to the Lib3dsFile structure containing the
* data of the .3DS file.
* If the .3DS file can not be loaded NULL is returned.
*
* \note To free the returned structure use lib3ds_free.
*
* \see lib3ds_file_save
* \see lib3ds_file_new
* \see lib3ds_file_free
*
* \ingroup file
*/
Lib3dsFile*
lib3ds_file_load(const char *filename)
{
FILE *f;
Lib3dsFile *file;
Lib3dsIo *io;
f = fopen(filename, "rb");
if (!f) {
return(0);
}
file = lib3ds_file_new();
if (!file) {
fclose(f);
return(0);
}
io = lib3ds_io_new(
f,
fileio_error_func,
fileio_seek_func,
fileio_tell_func,
fileio_read_func,
fileio_write_func
);
if (!io) {
lib3ds_file_free(file);
fclose(f);
return(0);
}
if (!lib3ds_file_read(file, io)) {
free(file);
fclose(f);
return(0);
}
lib3ds_io_free(io);
fclose(f);
return(file);
}
/*!
* Saves a .3DS file from memory to disk.
*
* \param file A pointer to a Lib3dsFile structure containing the
* the data that should be stored.
* \param filename The filename of the .3DS file to store the data in.
*
* \return TRUE on success, FALSE otherwise.
*
* \see lib3ds_file_load
*
* \ingroup file
*/
Lib3dsBool
lib3ds_file_save(Lib3dsFile *file, const char *filename)
{
FILE *f;
Lib3dsIo *io;
Lib3dsBool result;
f = fopen(filename, "wb");
if (!f) {
return(LIB3DS_FALSE);
}
io = lib3ds_io_new(
f,
fileio_error_func,
fileio_seek_func,
fileio_tell_func,
fileio_read_func,
fileio_write_func
);
if (!io) {
fclose(f);
return LIB3DS_FALSE;
}
result = lib3ds_file_write(file, io);
fclose(f);
lib3ds_io_free(io);
return(result);
}
/*!
* Creates and returns a new, empty Lib3dsFile object.
*
* \return A pointer to the Lib3dsFile structure.
* If the structure cannot be allocated, NULL is returned.
*
* \ingroup file
*/
Lib3dsFile*
lib3ds_file_new()
{
Lib3dsFile *file;
file=(Lib3dsFile*)calloc(sizeof(Lib3dsFile),1);
if (!file) {
return(0);
}
file->mesh_version=3;
file->master_scale=1.0f;
file->keyf_revision=5;
strcpy(file->name, "LIB3DS");
file->frames=100;
file->segment_from=0;
file->segment_to=100;
file->current_frame=0;
return(file);
}
/*!
* Free a Lib3dsFile object and all of its resources.
*
* \param file The Lib3dsFile object to be freed.
*
* \ingroup file
*/
void
lib3ds_file_free(Lib3dsFile* file)
{
ASSERT(file);
lib3ds_viewport_set_views(&file->viewport,0);
{
Lib3dsMaterial *p,*q;
for (p=file->materials; p; p=q) {
q=p->next;
lib3ds_material_free(p);
}
file->materials=0;
}
{
Lib3dsCamera *p,*q;
for (p=file->cameras; p; p=q) {
q=p->next;
lib3ds_camera_free(p);
}
file->cameras=0;
}
{
Lib3dsLight *p,*q;
for (p=file->lights; p; p=q) {
q=p->next;
lib3ds_light_free(p);
}
file->lights=0;
}
{
Lib3dsMesh *p,*q;
for (p=file->meshes; p; p=q) {
q=p->next;
lib3ds_mesh_free(p);
}
file->meshes=0;
}
{
Lib3dsNode *p,*q;
for (p=file->nodes; p; p=q) {
q=p->next;
lib3ds_node_free(p);
}
}
free(file);
}
/*!
* Evaluate all of the nodes in this Lib3dsFile object.
*
* \param file The Lib3dsFile object to be evaluated.
* \param t time value, between 0. and file->frames
*
* \see lib3ds_node_eval
*
* \ingroup file
*/
void
lib3ds_file_eval(Lib3dsFile *file, Lib3dsFloat t)
{
Lib3dsNode *p;
for (p=file->nodes; p!=0; p=p->next) {
lib3ds_node_eval(p, t);
}
}
static Lib3dsBool
named_object_read(Lib3dsFile *file, Lib3dsIo *io)
{
Lib3dsChunk c;
char name[64];
Lib3dsWord chunk;
if (!lib3ds_chunk_read_start(&c, LIB3DS_NAMED_OBJECT, io)) {
return(LIB3DS_FALSE);
}
if (!lib3ds_io_read_string(io, name, 64)) {
return(LIB3DS_FALSE);
}
lib3ds_chunk_dump_info(" NAME=%s", name);
lib3ds_chunk_read_tell(&c, io);
while ((chunk=lib3ds_chunk_read_next(&c, io))!=0) {
switch (chunk) {
case LIB3DS_N_TRI_OBJECT:
{
Lib3dsMesh *mesh;
mesh=lib3ds_mesh_new(name);
if (!mesh) {
return(LIB3DS_FALSE);
}
lib3ds_chunk_read_reset(&c, io);
if (!lib3ds_mesh_read(mesh, io)) {
return(LIB3DS_FALSE);
}
lib3ds_file_insert_mesh(file, mesh);
}
break;
case LIB3DS_N_CAMERA:
{
Lib3dsCamera *camera;
camera=lib3ds_camera_new(name);
if (!camera) {
return(LIB3DS_FALSE);
}
lib3ds_chunk_read_reset(&c, io);
if (!lib3ds_camera_read(camera, io)) {
return(LIB3DS_FALSE);
}
lib3ds_file_insert_camera(file, camera);
}
break;
case LIB3DS_N_DIRECT_LIGHT:
{
Lib3dsLight *light;
light=lib3ds_light_new(name);
if (!light) {
return(LIB3DS_FALSE);
}
lib3ds_chunk_read_reset(&c, io);
if (!lib3ds_light_read(light, io)) {
return(LIB3DS_FALSE);
}
lib3ds_file_insert_light(file, light);
}
break;
default:
lib3ds_chunk_unknown(chunk);
}
}
lib3ds_chunk_read_end(&c, io);
return(LIB3DS_TRUE);
}
static Lib3dsBool
ambient_read(Lib3dsFile *file, Lib3dsIo *io)
{
Lib3dsChunk c;
Lib3dsWord chunk;
Lib3dsBool have_lin=LIB3DS_FALSE;
if (!lib3ds_chunk_read_start(&c, LIB3DS_AMBIENT_LIGHT, io)) {
return(LIB3DS_FALSE);
}
while ((chunk=lib3ds_chunk_read_next(&c, io))!=0) {
switch (chunk) {
case LIB3DS_LIN_COLOR_F:
{
int i;
for (i=0; i<3; ++i) {
file->ambient[i]=lib3ds_io_read_float(io);
}
}
have_lin=LIB3DS_TRUE;
break;
case LIB3DS_COLOR_F:
{
/* gamma corrected color chunk
replaced in 3ds R3 by LIN_COLOR_24 */
if (!have_lin) {
int i;
for (i=0; i<3; ++i) {
file->ambient[i]=lib3ds_io_read_float(io);
}
}
}
break;
default:
lib3ds_chunk_unknown(chunk);
}
}
lib3ds_chunk_read_end(&c, io);
return(LIB3DS_TRUE);
}
static Lib3dsBool
mdata_read(Lib3dsFile *file, Lib3dsIo *io)
{
Lib3dsChunk c;
Lib3dsWord chunk;
if (!lib3ds_chunk_read_start(&c, LIB3DS_MDATA, io)) {
return(LIB3DS_FALSE);
}
while ((chunk=lib3ds_chunk_read_next(&c, io))!=0) {
switch (chunk) {
case LIB3DS_MESH_VERSION:
{
file->mesh_version=lib3ds_io_read_intd(io);
}
break;
case LIB3DS_MASTER_SCALE:
{
file->master_scale=lib3ds_io_read_float(io);
}
break;
case LIB3DS_SHADOW_MAP_SIZE:
case LIB3DS_LO_SHADOW_BIAS:
case LIB3DS_HI_SHADOW_BIAS:
case LIB3DS_SHADOW_SAMPLES:
case LIB3DS_SHADOW_RANGE:
case LIB3DS_SHADOW_FILTER:
case LIB3DS_RAY_BIAS:
{
lib3ds_chunk_read_reset(&c, io);
if (!lib3ds_shadow_read(&file->shadow, io)) {
return(LIB3DS_FALSE);
}
}
break;
case LIB3DS_VIEWPORT_LAYOUT:
case LIB3DS_DEFAULT_VIEW:
{
lib3ds_chunk_read_reset(&c, io);
if (!lib3ds_viewport_read(&file->viewport, io)) {
return(LIB3DS_FALSE);
}
}
break;
case LIB3DS_O_CONSTS:
{
int i;
for (i=0; i<3; ++i) {
file->construction_plane[i]=lib3ds_io_read_float(io);
}
}
break;
case LIB3DS_AMBIENT_LIGHT:
{
lib3ds_chunk_read_reset(&c, io);
if (!ambient_read(file, io)) {
return(LIB3DS_FALSE);
}
}
break;
case LIB3DS_BIT_MAP:
case LIB3DS_SOLID_BGND:
case LIB3DS_V_GRADIENT:
case LIB3DS_USE_BIT_MAP:
case LIB3DS_USE_SOLID_BGND:
case LIB3DS_USE_V_GRADIENT:
{
lib3ds_chunk_read_reset(&c, io);
if (!lib3ds_background_read(&file->background, io)) {
return(LIB3DS_FALSE);
}
}
break;
case LIB3DS_FOG:
case LIB3DS_LAYER_FOG:
case LIB3DS_DISTANCE_CUE:
case LIB3DS_USE_FOG:
case LIB3DS_USE_LAYER_FOG:
case LIB3DS_USE_DISTANCE_CUE:
{
lib3ds_chunk_read_reset(&c, io);
if (!lib3ds_atmosphere_read(&file->atmosphere, io)) {
return(LIB3DS_FALSE);
}
}
break;
case LIB3DS_MAT_ENTRY:
{
Lib3dsMaterial *material;
material=lib3ds_material_new();
if (!material) {
return(LIB3DS_FALSE);
}
lib3ds_chunk_read_reset(&c, io);
if (!lib3ds_material_read(material, io)) {
return(LIB3DS_FALSE);
}
lib3ds_file_insert_material(file, material);
}
break;
case LIB3DS_NAMED_OBJECT:
{
lib3ds_chunk_read_reset(&c, io);
if (!named_object_read(file, io)) {
return(LIB3DS_FALSE);
}
}
break;
default:
lib3ds_chunk_unknown(chunk);
}
}
lib3ds_chunk_read_end(&c, io);
return(LIB3DS_TRUE);
}
static Lib3dsBool
kfdata_read(Lib3dsFile *file, Lib3dsIo *io)
{
Lib3dsChunk c;
Lib3dsWord chunk;
if (!lib3ds_chunk_read_start(&c, LIB3DS_KFDATA, io)) {
return(LIB3DS_FALSE);
}
while ((chunk=lib3ds_chunk_read_next(&c, io))!=0) {
switch (chunk) {
case LIB3DS_KFHDR:
{
file->keyf_revision=lib3ds_io_read_word(io);
if (!lib3ds_io_read_string(io, file->name, 12+1)) {
return(LIB3DS_FALSE);
}
file->frames=lib3ds_io_read_intd(io);
}
break;
case LIB3DS_KFSEG:
{
file->segment_from=lib3ds_io_read_intd(io);
file->segment_to=lib3ds_io_read_intd(io);
}
break;
case LIB3DS_KFCURTIME:
{
file->current_frame=lib3ds_io_read_intd(io);
}
break;
case LIB3DS_VIEWPORT_LAYOUT:
case LIB3DS_DEFAULT_VIEW:
{
lib3ds_chunk_read_reset(&c, io);
if (!lib3ds_viewport_read(&file->viewport_keyf, io)) {
return(LIB3DS_FALSE);
}
}
break;
case LIB3DS_AMBIENT_NODE_TAG:
{
Lib3dsNode *node;
node=lib3ds_node_new_ambient();
if (!node) {
return(LIB3DS_FALSE);
}
lib3ds_chunk_read_reset(&c, io);
if (!lib3ds_node_read(node, file, io)) {
return(LIB3DS_FALSE);
}
lib3ds_file_insert_node(file, node);
}
break;
case LIB3DS_OBJECT_NODE_TAG:
{
Lib3dsNode *node;
node=lib3ds_node_new_object();
if (!node) {
return(LIB3DS_FALSE);
}
lib3ds_chunk_read_reset(&c, io);
if (!lib3ds_node_read(node, file, io)) {
return(LIB3DS_FALSE);
}
lib3ds_file_insert_node(file, node);
}
break;
case LIB3DS_CAMERA_NODE_TAG:
{
Lib3dsNode *node;
node=lib3ds_node_new_camera();
if (!node) {
return(LIB3DS_FALSE);
}
lib3ds_chunk_read_reset(&c, io);
if (!lib3ds_node_read(node, file, io)) {
return(LIB3DS_FALSE);
}
lib3ds_file_insert_node(file, node);
}
break;
case LIB3DS_TARGET_NODE_TAG:
{
Lib3dsNode *node;
node=lib3ds_node_new_target();
if (!node) {
return(LIB3DS_FALSE);
}
lib3ds_chunk_read_reset(&c, io);
if (!lib3ds_node_read(node, file, io)) {
return(LIB3DS_FALSE);
}
lib3ds_file_insert_node(file, node);
}
break;
case LIB3DS_LIGHT_NODE_TAG:
case LIB3DS_SPOTLIGHT_NODE_TAG:
{
Lib3dsNode *node;
node=lib3ds_node_new_light();
if (!node) {
return(LIB3DS_FALSE);
}
lib3ds_chunk_read_reset(&c, io);
if (!lib3ds_node_read(node, file, io)) {
return(LIB3DS_FALSE);
}
lib3ds_file_insert_node(file, node);
}
break;
case LIB3DS_L_TARGET_NODE_TAG:
{
Lib3dsNode *node;
node=lib3ds_node_new_spot();
if (!node) {
return(LIB3DS_FALSE);
}
lib3ds_chunk_read_reset(&c, io);
if (!lib3ds_node_read(node, file, io)) {
return(LIB3DS_FALSE);
}
lib3ds_file_insert_node(file, node);
}
break;
default:
lib3ds_chunk_unknown(chunk);
}
}
lib3ds_chunk_read_end(&c, io);
return(LIB3DS_TRUE);
}
/*!
* Read 3ds file data into a Lib3dsFile object.
*
* \param file The Lib3dsFile object to be filled.
* \param io A Lib3dsIo object previously set up by the caller.
*
* \return LIB3DS_TRUE on success, LIB3DS_FALSE on failure.
*
* \ingroup file
*/
Lib3dsBool
lib3ds_file_read(Lib3dsFile *file, Lib3dsIo *io)
{
Lib3dsChunk c;
Lib3dsWord chunk;
if (!lib3ds_chunk_read_start(&c, 0, io)) {
return(LIB3DS_FALSE);
}
switch (c.chunk) {
case LIB3DS_MDATA:
{
lib3ds_chunk_read_reset(&c, io);
if (!mdata_read(file, io)) {
return(LIB3DS_FALSE);
}
}
break;
case LIB3DS_M3DMAGIC:
case LIB3DS_MLIBMAGIC:
case LIB3DS_CMAGIC:
{
while ((chunk=lib3ds_chunk_read_next(&c, io))!=0) {
switch (chunk) {
case LIB3DS_M3D_VERSION:
{
file->mesh_version=lib3ds_io_read_dword(io);
}
break;
case LIB3DS_MDATA:
{
lib3ds_chunk_read_reset(&c, io);
if (!mdata_read(file, io)) {
return(LIB3DS_FALSE);
}
}
break;
case LIB3DS_KFDATA:
{
lib3ds_chunk_read_reset(&c, io);
if (!kfdata_read(file, io)) {
return(LIB3DS_FALSE);
}
}
break;
default:
lib3ds_chunk_unknown(chunk);
}
}
}
break;
default:
lib3ds_chunk_unknown(c.chunk);
return(LIB3DS_FALSE);
}
lib3ds_chunk_read_end(&c, io);
return(LIB3DS_TRUE);
}
static Lib3dsBool
colorf_write(Lib3dsRgba rgb, Lib3dsIo *io)
{
Lib3dsChunk c;
c.chunk=LIB3DS_COLOR_F;
c.size=18;
lib3ds_chunk_write(&c,io);
lib3ds_io_write_rgb(io, rgb);
c.chunk=LIB3DS_LIN_COLOR_F;
c.size=18;
lib3ds_chunk_write(&c,io);
lib3ds_io_write_rgb(io, rgb);
return(LIB3DS_TRUE);
}
static Lib3dsBool
mdata_write(Lib3dsFile *file, Lib3dsIo *io)
{
Lib3dsChunk c;
c.chunk=LIB3DS_MDATA;
if (!lib3ds_chunk_write_start(&c,io)) {
return(LIB3DS_FALSE);
}
{ /*---- LIB3DS_MESH_VERSION ----*/
Lib3dsChunk c;
c.chunk=LIB3DS_MESH_VERSION;
c.size=10;
lib3ds_chunk_write(&c,io);
lib3ds_io_write_intd(io, file->mesh_version);
}
{ /*---- LIB3DS_MASTER_SCALE ----*/
Lib3dsChunk c;
c.chunk=LIB3DS_MASTER_SCALE;
c.size=10;
lib3ds_chunk_write(&c,io);
lib3ds_io_write_float(io, file->master_scale);
}
{ /*---- LIB3DS_O_CONSTS ----*/
int i;
for (i=0; i<3; ++i) {
if (fabs(file->construction_plane[i])>LIB3DS_EPSILON) {
break;
}
}
if (i<3) {
Lib3dsChunk c;
c.chunk=LIB3DS_O_CONSTS;
c.size=18;
lib3ds_chunk_write(&c,io);
lib3ds_io_write_vector(io, file->construction_plane);
}
}
{ /*---- LIB3DS_AMBIENT_LIGHT ----*/
int i;
for (i=0; i<3; ++i) {
if (fabs(file->ambient[i])>LIB3DS_EPSILON) {
break;
}
}
if (i<3) {
Lib3dsChunk c;
c.chunk=LIB3DS_AMBIENT_LIGHT;
c.size=42;
lib3ds_chunk_write(&c,io);
colorf_write(file->ambient,io);
}
}
lib3ds_background_write(&file->background, io);
lib3ds_atmosphere_write(&file->atmosphere, io);
lib3ds_shadow_write(&file->shadow, io);
lib3ds_viewport_write(&file->viewport, io);
{
Lib3dsMaterial *p;
for (p=file->materials; p!=0; p=p->next) {
if (!lib3ds_material_write(p,io)) {
return(LIB3DS_FALSE);
}
}
}
{
Lib3dsCamera *p;
Lib3dsChunk c;
for (p=file->cameras; p!=0; p=p->next) {
c.chunk=LIB3DS_NAMED_OBJECT;
if (!lib3ds_chunk_write_start(&c,io)) {
return(LIB3DS_FALSE);
}
lib3ds_io_write_string(io, p->name);
lib3ds_camera_write(p,io);
if (!lib3ds_chunk_write_end(&c,io)) {
return(LIB3DS_FALSE);
}
}
}
{
Lib3dsLight *p;
Lib3dsChunk c;
for (p=file->lights; p!=0; p=p->next) {
c.chunk=LIB3DS_NAMED_OBJECT;
if (!lib3ds_chunk_write_start(&c,io)) {
return(LIB3DS_FALSE);
}
lib3ds_io_write_string(io,p->name);
lib3ds_light_write(p,io);
if (!lib3ds_chunk_write_end(&c,io)) {
return(LIB3DS_FALSE);
}
}
}
{
Lib3dsMesh *p;
Lib3dsChunk c;
for (p=file->meshes; p!=0; p=p->next) {
c.chunk=LIB3DS_NAMED_OBJECT;
if (!lib3ds_chunk_write_start(&c,io)) {
return(LIB3DS_FALSE);
}
lib3ds_io_write_string(io, p->name);
lib3ds_mesh_write(p,io);
if (!lib3ds_chunk_write_end(&c,io)) {
return(LIB3DS_FALSE);
}
}
}
if (!lib3ds_chunk_write_end(&c,io)) {
return(LIB3DS_FALSE);
}
return(LIB3DS_TRUE);
}
static Lib3dsBool
nodes_write(Lib3dsNode *node, Lib3dsFile *file, Lib3dsIo *io)
{
{
Lib3dsNode *p;
for (p=node->childs; p!=0; p=p->next) {
if (!lib3ds_node_write(p, file, io)) {
return(LIB3DS_FALSE);
}
nodes_write(p, file, io);
}
}
return(LIB3DS_TRUE);
}
static Lib3dsBool
kfdata_write(Lib3dsFile *file, Lib3dsIo *io)
{
Lib3dsChunk c;
if (!file->nodes) {
return(LIB3DS_TRUE);
}
c.chunk=LIB3DS_KFDATA;
if (!lib3ds_chunk_write_start(&c,io)) {
return(LIB3DS_FALSE);
}
{ /*---- LIB3DS_KFHDR ----*/
Lib3dsChunk c;
c.chunk=LIB3DS_KFHDR;
c.size=6 + 2 + strlen(file->name)+1 +4;
lib3ds_chunk_write(&c,io);
lib3ds_io_write_intw(io, file->keyf_revision);
lib3ds_io_write_string(io, file->name);
lib3ds_io_write_intd(io, file->frames);
}
{ /*---- LIB3DS_KFSEG ----*/
Lib3dsChunk c;
c.chunk=LIB3DS_KFSEG;
c.size=14;
lib3ds_chunk_write(&c,io);
lib3ds_io_write_intd(io, file->segment_from);
lib3ds_io_write_intd(io, file->segment_to);
}
{ /*---- LIB3DS_KFCURTIME ----*/
Lib3dsChunk c;
c.chunk=LIB3DS_KFCURTIME;
c.size=10;
lib3ds_chunk_write(&c,io);
lib3ds_io_write_intd(io, file->current_frame);
}
lib3ds_viewport_write(&file->viewport_keyf, io);
{
Lib3dsNode *p;
for (p=file->nodes; p!=0; p=p->next) {
if (!lib3ds_node_write(p, file, io)) {
return(LIB3DS_FALSE);
}
if (!nodes_write(p, file, io)) {
return(LIB3DS_FALSE);
}
}
}
if (!lib3ds_chunk_write_end(&c,io)) {
return(LIB3DS_FALSE);
}
return(LIB3DS_TRUE);
}
/*!
* Write 3ds file data from a Lib3dsFile object to a file.
*
* \param file The Lib3dsFile object to be written.
* \param io A Lib3dsIo object previously set up by the caller.
*
* \return LIB3DS_TRUE on success, LIB3DS_FALSE on failure.
*
* \ingroup file
*/
Lib3dsBool
lib3ds_file_write(Lib3dsFile *file, Lib3dsIo *io)
{
Lib3dsChunk c;
c.chunk=LIB3DS_M3DMAGIC;
if (!lib3ds_chunk_write_start(&c,io)) {
LIB3DS_ERROR_LOG;
return(LIB3DS_FALSE);
}
{ /*---- LIB3DS_M3D_VERSION ----*/
Lib3dsChunk c;
c.chunk=LIB3DS_M3D_VERSION;
c.size=10;
lib3ds_chunk_write(&c,io);
lib3ds_io_write_dword(io, file->mesh_version);
}
if (!mdata_write(file, io)) {
return(LIB3DS_FALSE);
}
if (!kfdata_write(file, io)) {
return(LIB3DS_FALSE);
}
if (!lib3ds_chunk_write_end(&c,io)) {
return(LIB3DS_FALSE);
}
return(LIB3DS_TRUE);
}
/*!
* Insert a new Lib3dsMaterial object into the materials list of
* a Lib3dsFile object.
*
* The new Lib3dsMaterial object is inserted into the materials list
* in alphabetic order by name.
*
* \param file The Lib3dsFile object to be modified.
* \param material The Lib3dsMaterial object to be inserted into file->materials
*
* \ingroup file
*/
void
lib3ds_file_insert_material(Lib3dsFile *file, Lib3dsMaterial *material)
{
Lib3dsMaterial *p,*q;
ASSERT(file);
ASSERT(material);
ASSERT(!material->next);
q=0;
for (p=file->materials; p!=0; p=p->next) {
if (strcmp(material->name, p->name)<0) {
break;
}
q=p;
}
if (!q) {
material->next=file->materials;
file->materials=material;
}
else {
material->next=q->next;
q->next=material;
}
}
/*!
* Remove a Lib3dsMaterial object from the materials list of
* a Lib3dsFile object.
*
* If the Lib3dsMaterial is not found in the materials list, nothing is
* done (except that an error log message may be generated.)
*
* \param file The Lib3dsFile object to be modified.
* \param material The Lib3dsMaterial object to be removed from file->materials
*
* \ingroup file
*/
void
lib3ds_file_remove_material(Lib3dsFile *file, Lib3dsMaterial *material)
{
Lib3dsMaterial *p,*q;
ASSERT(file);
ASSERT(material);
ASSERT(file->materials);
for (p=0,q=file->materials; q; p=q,q=q->next) {
if (q==material) {
break;
}
}
if (!q) {
ASSERT(LIB3DS_FALSE);
return;
}
if (!p) {
file->materials=material->next;
}
else {
p->next=q->next;
}
material->next=0;
}
/*!
* Return a Lib3dsMaterial object by name.
*
* \param file Lib3dsFile object to be searched.
* \param name Name of the Lib3dsMaterial object to be searched for.
*
* \return A pointer to the named Lib3dsMaterial, or NULL if not found.
*
* \ingroup file
*/
Lib3dsMaterial*
lib3ds_file_material_by_name(Lib3dsFile *file, const char *name)
{
Lib3dsMaterial *p;
ASSERT(file);
for (p=file->materials; p!=0; p=p->next) {
if (strcmp(p->name,name)==0) {
return(p);
}
}
return(0);
}
/*!
* Dump all Lib3dsMaterial objects found in a Lib3dsFile object.
*
* \param file Lib3dsFile object to be dumped.
*
* \see lib3ds_material_dump
*
* \ingroup file
*/
void
lib3ds_file_dump_materials(Lib3dsFile *file)
{
Lib3dsMaterial *p;
ASSERT(file);
for (p=file->materials; p!=0; p=p->next) {
lib3ds_material_dump(p);
}
}
/*!
* Insert a new Lib3dsMesh object into the meshes list of
* a Lib3dsFile object.
*
* The new Lib3dsMesh object is inserted into the meshes list
* in alphabetic order by name.
*
* \param file The Lib3dsFile object to be modified.
* \param material The Lib3dsMesh object to be inserted into file->meshes
*
* \ingroup file
*/
void
lib3ds_file_insert_mesh(Lib3dsFile *file, Lib3dsMesh *mesh)
{
Lib3dsMesh *p,*q;
ASSERT(file);
ASSERT(mesh);
ASSERT(!mesh->next);
q=0;
for (p=file->meshes; p!=0; p=p->next) {
if (strcmp(mesh->name, p->name)<0) {
break;
}
q=p;
}
if (!q) {
mesh->next=file->meshes;
file->meshes=mesh;
}
else {
mesh->next=q->next;
q->next=mesh;
}
}
/*!
* Remove a Lib3dsMesh object from the meshes list of
* a Lib3dsFile object.
*
* If the Lib3dsMesh is not found in the meshes list, nothing is done
* (except that an error log message may be generated.)
*
* \param file The Lib3dsFile object to be modified.
* \param material The Lib3dsMesh object to be removed from file->meshes
*
* \ingroup file
*/
void
lib3ds_file_remove_mesh(Lib3dsFile *file, Lib3dsMesh *mesh)
{
Lib3dsMesh *p,*q;
ASSERT(file);
ASSERT(mesh);
ASSERT(file->meshes);
for (p=0,q=file->meshes; q; p=q,q=q->next) {
if (q==mesh) {
break;
}
}
if (!q) {
ASSERT(LIB3DS_FALSE);
return;
}
if (!p) {
file->meshes=mesh->next;
}
else {
p->next=q->next;
}
mesh->next=0;
}
/*!
* Return a Lib3dsMesh object from a Lib3dsFile by name.
*
* \param file Lib3dsFile object to be searched.
* \param name Name of the Lib3dsMesh object to be searched for.
*
* \return A pointer to the named Lib3dsMesh, or NULL if not found.
*
* \ingroup file
*/
Lib3dsMesh*
lib3ds_file_mesh_by_name(Lib3dsFile *file, const char *name)
{
Lib3dsMesh *p;
ASSERT(file);
for (p=file->meshes; p!=0; p=p->next) {
if (strcmp(p->name,name)==0) {
return(p);
}
}
return(0);
}
/*!
* Dump all Lib3dsMesh objects found in a Lib3dsFile object.
*
* \param file Lib3dsFile object to be dumped.
*
* \see lib3ds_mesh_dump
*
* \ingroup file
*/
void
lib3ds_file_dump_meshes(Lib3dsFile *file)
{
Lib3dsMesh *p;
ASSERT(file);
for (p=file->meshes; p!=0; p=p->next) {
lib3ds_mesh_dump(p);
}
}
static void
dump_instances(Lib3dsNode *node, const char* parent)
{
Lib3dsNode *p;
char name[255];
ASSERT(node);
ASSERT(parent);
strcpy(name, parent);
strcat(name, ".");
strcat(name, node->name);
if (node->type==LIB3DS_OBJECT_NODE) {
printf(" %s : %s\n", name, node->data.object.instance);
}
for (p=node->childs; p!=0; p=p->next) {
dump_instances(p, parent);
}
}
/*!
* Dump all Lib3dsNode object names found in a Lib3dsFile object.
*
* For each node of type OBJECT_NODE, its name and data.object.instance
* fields are printed to stdout. Consider using lib3ds_file_dump_nodes()
* instead, as that function dumps more information.
*
* Nodes are dumped recursively.
*
* \param file Lib3dsFile object to be dumped.
*
* \see lib3ds_file_dump_nodes
*
* \ingroup file
*/
void
lib3ds_file_dump_instances(Lib3dsFile *file)
{
Lib3dsNode *p;
ASSERT(file);
for (p=file->nodes; p!=0; p=p->next) {
dump_instances(p,"");
}
}
/*!
* Insert a new Lib3dsCamera object into the cameras list of
* a Lib3dsFile object.
*
* The new Lib3dsCamera object is inserted into the cameras list
* in alphabetic order by name.
*
* \param file The Lib3dsFile object to be modified.
* \param material The Lib3dsCamera object to be inserted into file->cameras
*
* \ingroup file
*/
void
lib3ds_file_insert_camera(Lib3dsFile *file, Lib3dsCamera *camera)
{
Lib3dsCamera *p,*q;
ASSERT(file);
ASSERT(camera);
ASSERT(!camera->next);
q=0;
for (p=file->cameras; p!=0; p=p->next) {
if (strcmp(camera->name, p->name)<0) {
break;
}
q=p;
}
if (!q) {
camera->next=file->cameras;
file->cameras=camera;
}
else {
camera->next=q->next;
q->next=camera;
}
}
/*!
* Remove a Lib3dsCamera object from the cameras list of
* a Lib3dsFile object.
*
* If the Lib3dsCamera is not found in the cameras list, nothing is done
* (except that an error log message may be generated.)
*
* \param file The Lib3dsFile object to be modified.
* \param material The Lib3dsCamera object to be removed from file->cameras
*
* \ingroup file
*/
void
lib3ds_file_remove_camera(Lib3dsFile *file, Lib3dsCamera *camera)
{
Lib3dsCamera *p,*q;
ASSERT(file);
ASSERT(camera);
ASSERT(file->cameras);
for (p=0,q=file->cameras; q; p=q,q=q->next) {
if (q==camera) {
break;
}
}
if (!q) {
ASSERT(LIB3DS_FALSE);
return;
}
if (!p) {
file->cameras=camera->next;
}
else {
p->next=q->next;
}
camera->next=0;
}
/*!
* Return a Lib3dsCamera object from a Lib3dsFile by name.
*
* \param file Lib3dsFile object to be searched.
* \param name Name of the Lib3dsCamera object to be searched for.
*
* \return A pointer to the named Lib3dsCamera, or NULL if not found.
*
* \ingroup file
*/
Lib3dsCamera*
lib3ds_file_camera_by_name(Lib3dsFile *file, const char *name)
{
Lib3dsCamera *p;
ASSERT(file);
for (p=file->cameras; p!=0; p=p->next) {
if (strcmp(p->name,name)==0) {
return(p);
}
}
return(0);
}
/*!
* Dump all Lib3dsCamera objects found in a Lib3dsFile object.
*
* \param file Lib3dsFile object to be dumped.
*
* \see lib3ds_camera_dump
*
* \ingroup file
*/
void
lib3ds_file_dump_cameras(Lib3dsFile *file)
{
Lib3dsCamera *p;
ASSERT(file);
for (p=file->cameras; p!=0; p=p->next) {
lib3ds_camera_dump(p);
}
}
/*!
* Insert a new Lib3dsLight object into the lights list of
* a Lib3dsFile object.
*
* The new Lib3dsLight object is inserted into the lights list
* in alphabetic order by name.
*
* \param file The Lib3dsFile object to be modified.
* \param material The Lib3dsLight object to be inserted into file->lights
*
* \ingroup file
*/
void
lib3ds_file_insert_light(Lib3dsFile *file, Lib3dsLight *light)
{
Lib3dsLight *p,*q;
ASSERT(file);
ASSERT(light);
ASSERT(!light->next);
q=0;
for (p=file->lights; p!=0; p=p->next) {
if (strcmp(light->name, p->name)<0) {
break;
}
q=p;
}
if (!q) {
light->next=file->lights;
file->lights=light;
}
else {
light->next=q->next;
q->next=light;
}
}
/*!
* Remove a Lib3dsLight object from the lights list of
* a Lib3dsFile object.
*
* If the Lib3dsLight is not found in the lights list, nothing is done
* (except that an error log message may be generated.)
*
* \param file The Lib3dsFile object to be modified.
* \param material The Lib3dsLight object to be removed from file->lights
*
* \ingroup file
*/
void
lib3ds_file_remove_light(Lib3dsFile *file, Lib3dsLight *light)
{
Lib3dsLight *p,*q;
ASSERT(file);
ASSERT(light);
ASSERT(file->lights);
for (p=0,q=file->lights; q; p=q,q=q->next) {
if (q==light) {
break;
}
}
if (!q) {
ASSERT(LIB3DS_FALSE);
return;
}
if (!p) {
file->lights=light->next;
}
else {
p->next=q->next;
}
light->next=0;
}
/*!
* Return a Lib3dsLight object from a Lib3dsFile by name.
*
* \param file Lib3dsFile object to be searched.
* \param name Name of the Lib3dsLight object to be searched for.
*
* \return A pointer to the named Lib3dsLight, or NULL if not found.
*
* \ingroup file
*/
Lib3dsLight*
lib3ds_file_light_by_name(Lib3dsFile *file, const char *name)
{
Lib3dsLight *p;
ASSERT(file);
for (p=file->lights; p!=0; p=p->next) {
if (strcmp(p->name,name)==0) {
return(p);
}
}
return(0);
}
/*!
* Dump all Lib3dsLight objects found in a Lib3dsFile object.
*
* \param file Lib3dsFile object to be dumped.
*
* \see lib3ds_light_dump
*
* \ingroup file
*/
void
lib3ds_file_dump_lights(Lib3dsFile *file)
{
Lib3dsLight *p;
ASSERT(file);
for (p=file->lights; p!=0; p=p->next) {
lib3ds_light_dump(p);
}
}
/*!
* Compute the bounding box for Lib3dsFile objects.
*
* This function computes the bounding box for all meshes
* in the Lib3dsFile object. Cameras and lights are not included.
*
* \param file The Lib3dsFile object to be examined.
* \param min Returned minimum x,y,z values.
* \param max Returned maximum x,y,z values.
*
* \ingroup file
*/
void
lib3ds_object_bounding_box(Lib3dsFile *file, Lib3dsVector min, Lib3dsVector max)
{
{
Lib3dsVector lmin, lmax;
Lib3dsMesh *p=file->meshes;
if (p) {
lib3ds_mesh_bounding_box(p, min, max);
p = p->next;
}
while (p) {
lib3ds_mesh_bounding_box(p, lmin, lmax);
lib3ds_vector_min(min, lmin);
lib3ds_vector_max(max, lmax);
p=p->next;
}
}
}
/*!
* Compute the bounding box for a Lib3dsFile.
*
* This function computes the bounding box for all meshes, cameras,
* and lights in the Lib3dsFile object.
*
* \param file The Lib3dsFile object to be examined.
* \param min Returned minimum x,y,z values.
* \param max Returned maximum x,y,z values.
*
* \ingroup file
*/
void
lib3ds_file_bounding_box(Lib3dsFile *file, Lib3dsVector min, Lib3dsVector max)
{
Lib3dsBool init=LIB3DS_FALSE;
{
Lib3dsVector lmin, lmax;
Lib3dsMesh *p=file->meshes;
if (!init && p) {
init = LIB3DS_TRUE;
lib3ds_mesh_bounding_box(p, min, max);
p = p->next;
}
while (p) {
lib3ds_mesh_bounding_box(p, lmin, lmax);
lib3ds_vector_min(min, lmin);
lib3ds_vector_max(max, lmax);
p=p->next;
}
}
{
Lib3dsCamera *p=file->cameras;
if (!init && p) {
init = LIB3DS_TRUE;
lib3ds_vector_copy(min, p->position);
lib3ds_vector_copy(max, p->position);
}
while (p) {
lib3ds_vector_min(min, p->position);
lib3ds_vector_max(max, p->position);
lib3ds_vector_min(min, p->target);
lib3ds_vector_max(max, p->target);
p=p->next;
}
}
{
Lib3dsLight *p=file->lights;
if (!init && p) {
init = LIB3DS_TRUE;
lib3ds_vector_copy(min, p->position);
lib3ds_vector_copy(max, p->position);
}
while (p) {
lib3ds_vector_min(min, p->position);
lib3ds_vector_max(max, p->position);
if (p->spot_light) {
lib3ds_vector_min(min, p->spot);
lib3ds_vector_max(max, p->spot);
}
p=p->next;
}
}
}
/*!
* Return a node object by name and type.
*
* This function performs a recursive search for the specified node.
* Both name and type must match.
*
* \param file The Lib3dsFile to be searched.
* \param name The target node name.
* \param type The target node type
*
* \return A pointer to the first matching node, or NULL if not found.
*
* \see lib3ds_node_by_name
*
* \ingroup file
*/
Lib3dsNode*
lib3ds_file_node_by_name(Lib3dsFile *file, const char* name, Lib3dsNodeTypes type)
{
Lib3dsNode *p,*q;
ASSERT(file);
for (p=file->nodes; p!=0; p=p->next) {
if ((p->type==type) && (strcmp(p->name, name)==0)) {
return(p);
}
q=lib3ds_node_by_name(p, name, type);
if (q) {
return(q);
}
}
return(0);
}
/*!
* Return a node object by id.
*
* This function performs a recursive search for the specified node.
*
* \param file The Lib3dsFile to be searched.
* \param node_id The target node id.
*
* \return A pointer to the first matching node, or NULL if not found.
*
* \see lib3ds_node_by_id
*
* \ingroup file
*/
Lib3dsNode*
lib3ds_file_node_by_id(Lib3dsFile *file, Lib3dsWord node_id)
{
Lib3dsNode *p,*q;
ASSERT(file);
for (p=file->nodes; p!=0; p=p->next) {
if (p->node_id==node_id) {
return(p);
}
q=lib3ds_node_by_id(p, node_id);
if (q) {
return(q);
}
}
return(0);
}
/*!
* Insert a new node into a Lib3dsFile object.
*
* If the node's parent_id structure is not LIB3DS_NO_PARENT and the
* specified parent is found inside the Lib3dsFile object, then the
* node is inserted as a child of that parent. If the parent_id
* structure is LIB3DS_NO_PARENT or the specified parent is not found,
* then the node is inserted at the top level.
*
* Node is inserted in alphabetic order by name.
*
* Finally, if any other top-level nodes in file specify this node as
* their parent, they are relocated as a child of this node.
*
* \param file The Lib3dsFile object to be modified.
* \param node The node to be inserted into file
*
* \ingroup file
*/
void
lib3ds_file_insert_node(Lib3dsFile *file, Lib3dsNode *node)
{
Lib3dsNode *parent,*p,*n;
ASSERT(node);
ASSERT(!node->next);
ASSERT(!node->parent);
parent=0;
if (node->parent_id!=LIB3DS_NO_PARENT) {
parent=lib3ds_file_node_by_id(file, node->parent_id);
}
node->parent=parent;
if (!parent) {
for (p=0,n=file->nodes; n!=0; p=n,n=n->next) {
if (strcmp(n->name, node->name)>0) {
break;
}
}
if (!p) {
node->next=file->nodes;
file->nodes=node;
}
else {
node->next=p->next;
p->next=node;
}
}
else {
for (p=0,n=parent->childs; n!=0; p=n,n=n->next) {
if (strcmp(n->name, node->name)>0) {
break;
}
}
if (!p) {
node->next=parent->childs;
parent->childs=node;
}
else {
node->next=p->next;
p->next=node;
}
}
if (node->node_id!=LIB3DS_NO_PARENT) {
for (n=file->nodes; n!=0; n=p) {
p=n->next;
if (n->parent_id==node->node_id) {
lib3ds_file_remove_node(file, n);
lib3ds_file_insert_node(file, n);
}
}
}
}
/*!
* Remove a node from the a Lib3dsFile object.
*
* \param file The Lib3dsFile object to be modified.
* \param node The Lib3dsNode object to be removed from file
*
* \return LIB3DS_TRUE on success, LIB3DS_FALSE if node is not found in file
*
* \ingroup file
*/
Lib3dsBool
lib3ds_file_remove_node(Lib3dsFile *file, Lib3dsNode *node)
{
Lib3dsNode *p,*n;
if (node->parent) {
for (p=0,n=node->parent->childs; n; p=n,n=n->next) {
if (n==node) {
break;
}
}
if (!n) {
return(LIB3DS_FALSE);
}
if (!p) {
node->parent->childs=n->next;
}
else {
p->next=n->next;
}
}
else {
for (p=0,n=file->nodes; n; p=n,n=n->next) {
if (n==node) {
break;
}
}
if (!n) {
return(LIB3DS_FALSE);
}
if (!p) {
file->nodes=n->next;
}
else {
p->next=n->next;
}
}
return(LIB3DS_TRUE);
}
/*!
* Dump all node objects found in a Lib3dsFile object.
*
* Nodes are dumped recursively.
*
* \param file Lib3dsFile object to be dumped.
*
* \see lib3ds_node_dump
*
* \ingroup file
*/
void
lib3ds_file_dump_nodes(Lib3dsFile *file)
{
Lib3dsNode *p;
ASSERT(file);
for (p=file->nodes; p!=0; p=p->next) {
lib3ds_node_dump(p,1);
}
}
/*!
\typedef Lib3dsFile
\ingroup file
\sa _Lib3dsFile
*/
/* Programming trick to force users to compile their source code against the
* correct headers. The symbol lib3ds_version1_3 will be defined iff the users
* compile with the current version of <lib3ds/types.h>
*/
//extern int lib3ds_version1_3;
//static const int *lib3ds_version = &lib3ds_version1_3;
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