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d068ffb63a2a23c73bfc29d3ce24f118883a3d55
OpenSceneGraph/src/osgPlugins/lib3ds/viewport.cpp
Robert Osfield d068ffb63a From Michael Platings, "I was getting a 0 byte memory leak reported when loading 3ds files, so 
I've changed line 196 from:

viewport->layout.viewL=(Lib3dsView*)calloc(sizeof(Lib3dsView),views);

to:

viewport->layout.viewL= views ?
(Lib3dsView*)calloc(sizeof(Lib3dsView),views) : 0;"
2007-02-14 15:25:04 +00:00

368 lines
12 KiB
C++
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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.
*
* $Id$
*/
#define LIB3DS_EXPORT
#include "viewport.h"
#include "chunk.h"
#include "readwrite.h"
#include <stdlib.h>
#include <string.h>
/*!
* \defgroup viewport Viewport and default view settings
*
* \author J.E. Hoffmann <je-h@gmx.net>
*/
/*!
* \ingroup viewport
*/
Lib3dsBool
lib3ds_viewport_read(Lib3dsViewport *viewport, FILE *f)
{
Lib3dsChunk c;
Lib3dsWord chunk;
if (!lib3ds_chunk_read_start(&c, 0, f)) {
return(LIB3DS_FALSE);
}
switch (c.chunk) {
case LIB3DS_VIEWPORT_LAYOUT:
{
int cur=0;
viewport->layout.style=lib3ds_word_read(f);
viewport->layout.active=lib3ds_intw_read(f);
lib3ds_intw_read(f);
viewport->layout.swap=lib3ds_intw_read(f);
lib3ds_intw_read(f);
viewport->layout.swap_prior=lib3ds_intw_read(f);
viewport->layout.swap_view=lib3ds_intw_read(f);
lib3ds_chunk_read_tell(&c, f);
while ((chunk=lib3ds_chunk_read_next(&c, f))!=0) {
switch (chunk) {
case LIB3DS_VIEWPORT_SIZE:
{
viewport->layout.position[0]=lib3ds_word_read(f);
viewport->layout.position[1]=lib3ds_word_read(f);
viewport->layout.size[0]=lib3ds_word_read(f);
viewport->layout.size[1]=lib3ds_word_read(f);
}
break;
case LIB3DS_VIEWPORT_DATA_3:
{
lib3ds_viewport_set_views(viewport,cur+1);
lib3ds_intw_read(f);
viewport->layout.viewL[cur].axis_lock=lib3ds_word_read(f);
viewport->layout.viewL[cur].position[0]=lib3ds_intw_read(f);
viewport->layout.viewL[cur].position[1]=lib3ds_intw_read(f);
viewport->layout.viewL[cur].size[0]=lib3ds_intw_read(f);
viewport->layout.viewL[cur].size[1]=lib3ds_intw_read(f);
viewport->layout.viewL[cur].type=lib3ds_word_read(f);
viewport->layout.viewL[cur].zoom=lib3ds_float_read(f);
lib3ds_vector_read(viewport->layout.viewL[cur].center,f);
viewport->layout.viewL[cur].horiz_angle=lib3ds_float_read(f);
viewport->layout.viewL[cur].vert_angle=lib3ds_float_read(f);
fread(viewport->layout.viewL[cur].camera,11,1,f);
++cur;
}
break;
case LIB3DS_VIEWPORT_DATA:
/* 3DS R2 & R3 chunk
unsupported */
break;
default:
lib3ds_chunk_unknown(chunk);
}
}
}
break;
case LIB3DS_DEFAULT_VIEW:
{
memset(&viewport->default_view,0,sizeof(Lib3dsDefaultView));
while ((chunk=lib3ds_chunk_read_next(&c, f))!=0) {
switch (chunk) {
case LIB3DS_VIEW_TOP:
{
viewport->default_view.type=LIB3DS_VIEW_TYPE_TOP;
lib3ds_vector_read(viewport->default_view.position,f);
viewport->default_view.width=lib3ds_float_read(f);
}
break;
case LIB3DS_VIEW_BOTTOM:
{
viewport->default_view.type=LIB3DS_VIEW_TYPE_BOTTOM;
lib3ds_vector_read(viewport->default_view.position,f);
viewport->default_view.width=lib3ds_float_read(f);
}
break;
case LIB3DS_VIEW_LEFT:
{
viewport->default_view.type=LIB3DS_VIEW_TYPE_LEFT;
lib3ds_vector_read(viewport->default_view.position,f);
viewport->default_view.width=lib3ds_float_read(f);
}
break;
case LIB3DS_VIEW_RIGHT:
{
viewport->default_view.type=LIB3DS_VIEW_TYPE_RIGHT;
lib3ds_vector_read(viewport->default_view.position,f);
viewport->default_view.width=lib3ds_float_read(f);
}
break;
case LIB3DS_VIEW_FRONT:
{
viewport->default_view.type=LIB3DS_VIEW_TYPE_FRONT;
lib3ds_vector_read(viewport->default_view.position,f);
viewport->default_view.width=lib3ds_float_read(f);
}
break;
case LIB3DS_VIEW_BACK:
{
viewport->default_view.type=LIB3DS_VIEW_TYPE_BACK;
lib3ds_vector_read(viewport->default_view.position,f);
viewport->default_view.width=lib3ds_float_read(f);
}
break;
case LIB3DS_VIEW_USER:
{
viewport->default_view.type=LIB3DS_VIEW_TYPE_USER;
lib3ds_vector_read(viewport->default_view.position,f);
viewport->default_view.width=lib3ds_float_read(f);
viewport->default_view.horiz_angle=lib3ds_float_read(f);
viewport->default_view.vert_angle=lib3ds_float_read(f);
viewport->default_view.roll_angle=lib3ds_float_read(f);
}
break;
case LIB3DS_VIEW_CAMERA:
{
viewport->default_view.type=LIB3DS_VIEW_TYPE_CAMERA;
fread(viewport->default_view.camera,11,1,f);
}
break;
default:
lib3ds_chunk_unknown(chunk);
}
}
}
break;
}
lib3ds_chunk_read_end(&c, f);
return(LIB3DS_TRUE);
}
/*!
* \ingroup viewport
*/
void
lib3ds_viewport_set_views(Lib3dsViewport *viewport, Lib3dsDword views)
{
ASSERT(viewport);
if (viewport->layout.views) {
if (views) {
viewport->layout.views=views;
viewport->layout.viewL=(Lib3dsView*)realloc(viewport->layout.viewL, sizeof(Lib3dsView)*views);
}
else {
free(viewport->layout.viewL);
viewport->layout.views=0;
viewport->layout.viewL=0;
}
}
else {
viewport->layout.views=views;
viewport->layout.viewL= views ? (Lib3dsView*)calloc(sizeof(Lib3dsView),views) : 0;
}
}
/*!
* \ingroup viewport
*/
Lib3dsBool
lib3ds_viewport_write(Lib3dsViewport *viewport, FILE *f)
{
if (viewport->layout.views) {
Lib3dsChunk c;
unsigned i;
c.chunk=LIB3DS_VIEWPORT_LAYOUT;
if (!lib3ds_chunk_write_start(&c,f)) {
return(LIB3DS_FALSE);
}
lib3ds_word_write(viewport->layout.style,f);
lib3ds_intw_write(viewport->layout.active,f);
lib3ds_intw_write(0,f);
lib3ds_intw_write(viewport->layout.swap,f);
lib3ds_intw_write(0,f);
lib3ds_intw_write(viewport->layout.swap_prior,f);
lib3ds_intw_write(viewport->layout.swap_view,f);
{
Lib3dsChunk c;
c.chunk=LIB3DS_VIEWPORT_SIZE;
c.size=14;
lib3ds_chunk_write(&c,f);
lib3ds_intw_write(viewport->layout.position[0],f);
lib3ds_intw_write(viewport->layout.position[1],f);
lib3ds_intw_write(viewport->layout.size[0],f);
lib3ds_intw_write(viewport->layout.size[1],f);
}
for (i=0; i<viewport->layout.views; ++i) {
Lib3dsChunk c;
c.chunk=LIB3DS_VIEWPORT_DATA_3;
c.size=55;
lib3ds_chunk_write(&c,f);
lib3ds_intw_write(0,f);
lib3ds_word_write(viewport->layout.viewL[i].axis_lock,f);
lib3ds_intw_write(viewport->layout.viewL[i].position[0],f);
lib3ds_intw_write(viewport->layout.viewL[i].position[1],f);
lib3ds_intw_write(viewport->layout.viewL[i].size[0],f);
lib3ds_intw_write(viewport->layout.viewL[i].size[1],f);
lib3ds_word_write(viewport->layout.viewL[i].type,f);
lib3ds_float_write(viewport->layout.viewL[i].zoom,f);
lib3ds_vector_write(viewport->layout.viewL[i].center,f);
lib3ds_float_write(viewport->layout.viewL[i].horiz_angle,f);
lib3ds_float_write(viewport->layout.viewL[i].vert_angle,f);
fwrite(viewport->layout.viewL[i].camera,11,1,f);
}
if (!lib3ds_chunk_write_end(&c,f)) {
return(LIB3DS_FALSE);
}
}
if (viewport->default_view.type) {
Lib3dsChunk c;
c.chunk=LIB3DS_DEFAULT_VIEW;
if (!lib3ds_chunk_write_start(&c,f)) {
return(LIB3DS_FALSE);
}
switch (viewport->default_view.type) {
case LIB3DS_VIEW_TYPE_TOP:
{
Lib3dsChunk c;
c.chunk=LIB3DS_VIEW_TOP;
c.size=22;
lib3ds_chunk_write(&c,f);
lib3ds_vector_write(viewport->default_view.position,f);
lib3ds_float_write(viewport->default_view.width,f);
}
break;
case LIB3DS_VIEW_TYPE_BOTTOM:
{
Lib3dsChunk c;
c.chunk=LIB3DS_VIEW_BOTTOM;
c.size=22;
lib3ds_chunk_write(&c,f);
lib3ds_vector_write(viewport->default_view.position,f);
lib3ds_float_write(viewport->default_view.width,f);
}
break;
case LIB3DS_VIEW_TYPE_LEFT:
{
Lib3dsChunk c;
c.chunk=LIB3DS_VIEW_LEFT;
c.size=22;
lib3ds_chunk_write(&c,f);
lib3ds_vector_write(viewport->default_view.position,f);
lib3ds_float_write(viewport->default_view.width,f);
}
break;
case LIB3DS_VIEW_TYPE_RIGHT:
{
Lib3dsChunk c;
c.chunk=LIB3DS_VIEW_RIGHT;
c.size=22;
lib3ds_chunk_write(&c,f);
lib3ds_vector_write(viewport->default_view.position,f);
lib3ds_float_write(viewport->default_view.width,f);
}
break;
case LIB3DS_VIEW_TYPE_FRONT:
{
Lib3dsChunk c;
c.chunk=LIB3DS_VIEW_FRONT;
c.size=22;
lib3ds_chunk_write(&c,f);
lib3ds_vector_write(viewport->default_view.position,f);
lib3ds_float_write(viewport->default_view.width,f);
}
break;
case LIB3DS_VIEW_TYPE_BACK:
{
Lib3dsChunk c;
c.chunk=LIB3DS_VIEW_BACK;
c.size=22;
lib3ds_chunk_write(&c,f);
lib3ds_vector_write(viewport->default_view.position,f);
lib3ds_float_write(viewport->default_view.width,f);
}
break;
case LIB3DS_VIEW_TYPE_USER:
{
Lib3dsChunk c;
c.chunk=LIB3DS_VIEW_USER;
c.size=34;
lib3ds_chunk_write(&c,f);
lib3ds_vector_write(viewport->default_view.position,f);
lib3ds_float_write(viewport->default_view.width,f);
lib3ds_float_write(viewport->default_view.horiz_angle,f);
lib3ds_float_write(viewport->default_view.vert_angle,f);
lib3ds_float_write(viewport->default_view.roll_angle,f);
}
break;
case LIB3DS_VIEW_TYPE_CAMERA:
{
Lib3dsChunk c;
c.chunk=LIB3DS_VIEW_CAMERA;
c.size=17;
lib3ds_chunk_write(&c,f);
fwrite(viewport->default_view.camera,1,11,f);
}
break;
}
if (!lib3ds_chunk_write_end(&c,f)) {
return(LIB3DS_FALSE);
}
}
return(LIB3DS_TRUE);
}
/*!
\typedef Lib3dsViewport
\ingroup viewport
\sa _Lib3dsViewport
*/
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