+++ /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: background.c,v 1.8 2001/07/07 19:05:30 jeh Exp $
- */
-#define LIB3DS_EXPORT
-#include <lib3ds/background.h>
-#include <lib3ds/chunk.h>
-#include <lib3ds/io.h>
-#include <string.h>
-#include <math.h>
-
-
-/*!
- * \defgroup background Background Settings
- *
- * \author J.E. Hoffmann <je-h@gmx.net>
- */
-
-
-static Lib3dsBool
-solid_bgnd_read(Lib3dsBackground *background, Lib3dsIo *io)
-{
- Lib3dsChunk c;
- Lib3dsWord chunk;
-
- if (!lib3ds_chunk_read_start(&c, LIB3DS_SOLID_BGND, io)) {
- return(LIB3DS_FALSE);
- }
-
- while ((chunk=lib3ds_chunk_read_next(&c, io))!=0) {
- switch (chunk) {
- case LIB3DS_LIN_COLOR_F:
- lib3ds_io_read_rgb(io, background->solid.col);
- break;
- case LIB3DS_COLOR_F:
- lib3ds_io_read_rgb(io, background->solid.col);
- break;
- default:
- lib3ds_chunk_unknown(chunk);
- }
- }
-
- lib3ds_chunk_read_end(&c, io);
- return(LIB3DS_TRUE);
-}
-
-
-static Lib3dsBool
-v_gradient_read(Lib3dsBackground *background, Lib3dsIo *io)
-{
- Lib3dsChunk c;
- Lib3dsWord chunk;
- int index[2];
- Lib3dsRgb col[2][3];
- int have_lin=0;
-
-
- if (!lib3ds_chunk_read_start(&c, LIB3DS_V_GRADIENT, io)) {
- return(LIB3DS_FALSE);
- }
- background->gradient.percent=lib3ds_io_read_float(io);
- lib3ds_chunk_read_tell(&c, io);
-
- index[0]=index[1]=0;
- while ((chunk=lib3ds_chunk_read_next(&c, io))!=0) {
- switch (chunk) {
- case LIB3DS_COLOR_F:
- lib3ds_io_read_rgb(io, col[0][index[0]]);
- index[0]++;
- break;
- case LIB3DS_LIN_COLOR_F:
- lib3ds_io_read_rgb(io, col[1][index[1]]);
- index[1]++;
- have_lin=1;
- break;
- default:
- lib3ds_chunk_unknown(chunk);
- }
- }
- {
- int i;
- for (i=0; i<3; ++i) {
- background->gradient.top[i]=col[have_lin][0][i];
- background->gradient.middle[i]=col[have_lin][1][i];
- background->gradient.bottom[i]=col[have_lin][2][i];
- }
- }
- lib3ds_chunk_read_end(&c, io);
- return(LIB3DS_TRUE);
-}
-
-
-/*!
- * \ingroup background
- */
-Lib3dsBool
-lib3ds_background_read(Lib3dsBackground *background, Lib3dsIo *io)
-{
- Lib3dsChunk c;
-
- if (!lib3ds_chunk_read(&c, io)) {
- return(LIB3DS_FALSE);
- }
-
- switch (c.chunk) {
- case LIB3DS_BIT_MAP:
- {
- if (!lib3ds_io_read_string(io, background->bitmap.name, 64)) {
- return(LIB3DS_FALSE);
- }
- }
- break;
- case LIB3DS_SOLID_BGND:
- {
- lib3ds_chunk_read_reset(&c, io);
- if (!solid_bgnd_read(background, io)) {
- return(LIB3DS_FALSE);
- }
- }
- break;
- case LIB3DS_V_GRADIENT:
- {
- lib3ds_chunk_read_reset(&c, io);
- if (!v_gradient_read(background, io)) {
- return(LIB3DS_FALSE);
- }
- }
- break;
- case LIB3DS_USE_BIT_MAP:
- {
- background->bitmap.use=LIB3DS_TRUE;
- }
- break;
- case LIB3DS_USE_SOLID_BGND:
- {
- background->solid.use=LIB3DS_TRUE;
- }
- break;
- case LIB3DS_USE_V_GRADIENT:
- {
- background->gradient.use=LIB3DS_TRUE;
- }
- break;
- }
-
- 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
-colorf_defined(Lib3dsRgba rgb)
-{
- int i;
- for (i=0; i<3; ++i) {
- if (fabs(rgb[i])>LIB3DS_EPSILON) {
- break;
- }
- }
- return(i<3);
-}
-
-
-/*!
- * \ingroup background
- */
-Lib3dsBool
-lib3ds_background_write(Lib3dsBackground *background, Lib3dsIo *io)
-{
- if (strlen(background->bitmap.name)) { /*---- LIB3DS_BIT_MAP ----*/
- Lib3dsChunk c;
- c.chunk=LIB3DS_BIT_MAP;
- c.size=6+1+strlen(background->bitmap.name);
- lib3ds_chunk_write(&c,io);
- lib3ds_io_write_string(io, background->bitmap.name);
- }
-
- if (colorf_defined(background->solid.col)) { /*---- LIB3DS_SOLID_BGND ----*/
- Lib3dsChunk c;
- c.chunk=LIB3DS_SOLID_BGND;
- c.size=42;
- lib3ds_chunk_write(&c,io);
- colorf_write(background->solid.col, io);
- }
-
- if (colorf_defined(background->gradient.top) ||
- colorf_defined(background->gradient.middle) ||
- colorf_defined(background->gradient.bottom)) { /*---- LIB3DS_V_GRADIENT ----*/
- Lib3dsChunk c;
- c.chunk=LIB3DS_V_GRADIENT;
- c.size=118;
- lib3ds_chunk_write(&c,io);
- lib3ds_io_write_float(io, background->gradient.percent);
- colorf_write(background->gradient.top,io);
- colorf_write(background->gradient.middle,io);
- colorf_write(background->gradient.bottom,io);
- }
-
- if (background->bitmap.use) { /*---- LIB3DS_USE_BIT_MAP ----*/
- Lib3dsChunk c;
- c.chunk=LIB3DS_USE_BIT_MAP;
- c.size=6;
- lib3ds_chunk_write(&c,io);
- }
-
- if (background->solid.use) { /*---- LIB3DS_USE_SOLID_BGND ----*/
- Lib3dsChunk c;
- c.chunk=LIB3DS_USE_SOLID_BGND;
- c.size=6;
- lib3ds_chunk_write(&c,io);
- }
-
- if (background->gradient.use) { /*---- LIB3DS_USE_V_GRADIENT ----*/
- Lib3dsChunk c;
- c.chunk=LIB3DS_USE_V_GRADIENT;
- c.size=6;
- lib3ds_chunk_write(&c,io);
- }
-
- return(LIB3DS_TRUE);
-}
-
-
-/*!
-
-\typedef Lib3dsBackground
- \ingroup background
- \sa _Lib3dsBackground
-
-*/
projects / summerhack / blobdiff