+++ /dev/null
-/*
- * 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: atmosphere.c,v 1.9 2001/07/07 19:05:30 jeh Exp $
- */
-#define LIB3DS_EXPORT
-#include <lib3ds/atmosphere.h>
-#include <lib3ds/chunk.h>
-#include <lib3ds/io.h>
-
-
-/*!
- * \defgroup atmosphere Atmosphere Settings
- *
- * \author J.E. Hoffmann <je-h@gmx.net>
- */
-
-
-static Lib3dsBool
-fog_read(Lib3dsFog *fog, Lib3dsIo *io)
-{
- Lib3dsChunk c;
- Lib3dsWord chunk;
-
- if (!lib3ds_chunk_read_start(&c, LIB3DS_FOG, io)) {
- return(LIB3DS_FALSE);
- }
- fog->near_plane = lib3ds_io_read_float(io);
- fog->near_density=lib3ds_io_read_float(io);
- fog->far_plane=lib3ds_io_read_float(io);
- fog->far_density=lib3ds_io_read_float(io);
- lib3ds_chunk_read_tell(&c, io);
-
- while ((chunk=lib3ds_chunk_read_next(&c, io))!=0) {
- switch (chunk) {
- case LIB3DS_LIN_COLOR_F:
- {
- int i;
- for (i=0; i<3; ++i) {
- fog->col[i]=lib3ds_io_read_float(io);
- }
- }
- break;
- case LIB3DS_COLOR_F:
- break;
- case LIB3DS_FOG_BGND:
- {
- fog->fog_background=LIB3DS_TRUE;
- }
- break;
- default:
- lib3ds_chunk_unknown(chunk);
- }
- }
-
- lib3ds_chunk_read_end(&c, io);
- return(LIB3DS_TRUE);
-}
-
-
-static Lib3dsBool
-layer_fog_read(Lib3dsLayerFog *fog, Lib3dsIo *io)
-{
- Lib3dsChunk c;
- Lib3dsWord chunk;
-
- if (!lib3ds_chunk_read_start(&c, LIB3DS_LAYER_FOG, io)) {
- return(LIB3DS_FALSE);
- }
- fog->near_y=lib3ds_io_read_float(io);
- fog->far_y=lib3ds_io_read_float(io);
- fog->density=lib3ds_io_read_float(io);
- fog->flags=lib3ds_io_read_dword(io);
- lib3ds_chunk_read_tell(&c, io);
-
- while ((chunk=lib3ds_chunk_read_next(&c, io))!=0) {
- switch (chunk) {
- case LIB3DS_LIN_COLOR_F:
- lib3ds_io_read_rgb(io, fog->col);
- break;
- case LIB3DS_COLOR_F:
- lib3ds_io_read_rgb(io, fog->col);
- break;
- default:
- lib3ds_chunk_unknown(chunk);
- }
- }
-
- lib3ds_chunk_read_end(&c, io);
- return(LIB3DS_TRUE);
-}
-
-
-static Lib3dsBool
-distance_cue_read(Lib3dsDistanceCue *cue, Lib3dsIo *io)
-{
- Lib3dsChunk c;
- Lib3dsWord chunk;
-
- if (!lib3ds_chunk_read_start(&c, LIB3DS_DISTANCE_CUE, io)) {
- return(LIB3DS_FALSE);
- }
- cue->near_plane=lib3ds_io_read_float(io);
- cue->near_dimming=lib3ds_io_read_float(io);
- cue->far_plane=lib3ds_io_read_float(io);
- cue->far_dimming=lib3ds_io_read_float(io);
- lib3ds_chunk_read_tell(&c, io);
-
- while ((chunk=lib3ds_chunk_read_next(&c, io))!=0) {
- switch (chunk) {
- case LIB3DS_DCUE_BGND:
- {
- cue->cue_background=LIB3DS_TRUE;
- }
- break;
- default:
- lib3ds_chunk_unknown(chunk);
- }
- }
-
- lib3ds_chunk_read_end(&c, io);
- return(LIB3DS_TRUE);
-}
-
-
-/*!
- * \ingroup atmosphere
- */
-Lib3dsBool
-lib3ds_atmosphere_read(Lib3dsAtmosphere *atmosphere, Lib3dsIo *io)
-{
- Lib3dsChunk c;
-
- if (!lib3ds_chunk_read(&c, io)) {
- return(LIB3DS_FALSE);
- }
-
- switch (c.chunk) {
- case LIB3DS_FOG:
- {
- lib3ds_chunk_read_reset(&c, io);
- if (!fog_read(&atmosphere->fog, io)) {
- return(LIB3DS_FALSE);
- }
- }
- break;
- case LIB3DS_LAYER_FOG:
- {
- lib3ds_chunk_read_reset(&c, io);
- if (!layer_fog_read(&atmosphere->layer_fog, io)) {
- return(LIB3DS_FALSE);
- }
- }
- break;
- case LIB3DS_DISTANCE_CUE:
- {
- lib3ds_chunk_read_reset(&c, io);
- if (!distance_cue_read(&atmosphere->dist_cue, io)) {
- return(LIB3DS_FALSE);
- }
- }
- break;
- case LIB3DS_USE_FOG:
- {
- atmosphere->fog.use=LIB3DS_TRUE;
- }
- break;
- case LIB3DS_USE_LAYER_FOG:
- {
- atmosphere->fog.use=LIB3DS_TRUE;
- }
- break;
- case LIB3DS_USE_DISTANCE_CUE:
- {
- atmosphere->dist_cue.use=LIB3DS_TRUE;
- }
- break;
- }
-
- return(LIB3DS_TRUE);
-}
-
-
-/*!
- * \ingroup atmosphere
- */
-Lib3dsBool
-lib3ds_atmosphere_write(Lib3dsAtmosphere *atmosphere, Lib3dsIo *io)
-{
- if (atmosphere->fog.use) { /*---- LIB3DS_FOG ----*/
- Lib3dsChunk c;
- c.chunk=LIB3DS_FOG;
- if (!lib3ds_chunk_write_start(&c,io)) {
- return(LIB3DS_FALSE);
- }
- lib3ds_io_write_float(io, atmosphere->fog.near_plane);
- lib3ds_io_write_float(io, atmosphere->fog.near_density);
- lib3ds_io_write_float(io, atmosphere->fog.far_plane);
- lib3ds_io_write_float(io, atmosphere->fog.far_density);
- {
- Lib3dsChunk c;
- c.chunk=LIB3DS_COLOR_F;
- c.size=18;
- lib3ds_chunk_write(&c,io);
- lib3ds_io_write_rgb(io, atmosphere->fog.col);
- }
- if (atmosphere->fog.fog_background) {
- Lib3dsChunk c;
- c.chunk=LIB3DS_FOG_BGND;
- c.size=6;
- lib3ds_chunk_write(&c,io);
- }
- if (!lib3ds_chunk_write_end(&c,io)) {
- return(LIB3DS_FALSE);
- }
- }
-
- if (atmosphere->layer_fog.use) { /*---- LIB3DS_LAYER_FOG ----*/
- Lib3dsChunk c;
- c.chunk=LIB3DS_LAYER_FOG;
- c.size=40;
- lib3ds_chunk_write(&c,io);
- lib3ds_io_write_float(io, atmosphere->layer_fog.near_y);
- lib3ds_io_write_float(io, atmosphere->layer_fog.far_y);
- lib3ds_io_write_float(io, atmosphere->layer_fog.near_y);
- lib3ds_io_write_dword(io, atmosphere->layer_fog.flags);
- {
- Lib3dsChunk c;
- c.chunk=LIB3DS_COLOR_F;
- c.size=18;
- lib3ds_chunk_write(&c,io);
- lib3ds_io_write_rgb(io, atmosphere->fog.col);
- }
- }
-
- if (atmosphere->dist_cue.use) { /*---- LIB3DS_DISTANCE_CUE ----*/
- Lib3dsChunk c;
- c.chunk=LIB3DS_DISTANCE_CUE;
- if (!lib3ds_chunk_write_start(&c,io)) {
- return(LIB3DS_FALSE);
- }
- lib3ds_io_write_float(io, atmosphere->dist_cue.near_plane);
- lib3ds_io_write_float(io, atmosphere->dist_cue.near_dimming);
- lib3ds_io_write_float(io, atmosphere->dist_cue.far_plane);
- lib3ds_io_write_float(io, atmosphere->dist_cue.far_dimming);
- if (atmosphere->dist_cue.cue_background) {
- Lib3dsChunk c;
- c.chunk=LIB3DS_DCUE_BGND;
- c.size=6;
- lib3ds_chunk_write(&c,io);
- }
- if (!lib3ds_chunk_write_end(&c,io)) {
- return(LIB3DS_FALSE);
- }
- }
-
- if (atmosphere->fog.use) { /*---- LIB3DS_USE_FOG ----*/
- Lib3dsChunk c;
- c.chunk=LIB3DS_USE_FOG;
- c.size=6;
- lib3ds_chunk_write(&c,io);
- }
-
- if (atmosphere->layer_fog.use) { /*---- LIB3DS_USE_LAYER_FOG ----*/
- Lib3dsChunk c;
- c.chunk=LIB3DS_USE_LAYER_FOG;
- c.size=6;
- lib3ds_chunk_write(&c,io);
- }
-
- if (atmosphere->dist_cue.use) { /*---- LIB3DS_USE_DISTANCE_CUE ----*/
- Lib3dsChunk c;
- c.chunk=LIB3DS_USE_V_GRADIENT;
- c.size=6;
- lib3ds_chunk_write(&c,io);
- }
-
- return(LIB3DS_TRUE);
-}
-
-
-/*!
-
-\typedef Lib3dsAtmosphere
- \ingroup atmosphere
- \sa _Lib3dsAtmosphere
-
-*/
-
projects / summerhack / blobdiff