+++ /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: camera.c,v 1.12 2004/11/16 07:41:44 efalk Exp $
- */
-#define LIB3DS_EXPORT
-#include <lib3ds/camera.h>
-#include <lib3ds/chunk.h>
-#include <lib3ds/io.h>
-#include <stdlib.h>
-#include <math.h>
-#include <string.h>
-#ifdef WITH_DMALLOC
-#include <dmalloc.h>
-#endif
-
-
-/*!
- * \defgroup camera Cameras
- *
- * \author J.E. Hoffmann <je-h@gmx.net>
- */
-
-
-/*!
- * Return a new Lib3dsCamera object.
- *
- * Object is initialized with the given name and fov=45. All other
- * values are 0.
- *
- * \param name Name of this camera. Must not be NULL. Must be < 64 characters.
- *
- * \return Lib3dsCamera object or NULL on failure.
- *
- * \ingroup camera
- */
-Lib3dsCamera*
-lib3ds_camera_new(const char *name)
-{
- Lib3dsCamera *camera;
-
- ASSERT(name);
- ASSERT(strlen(name)<64);
-
- camera=(Lib3dsCamera*)calloc(sizeof(Lib3dsCamera), 1);
- if (!camera) {
- return(0);
- }
- strcpy(camera->name, name);
- camera->fov=45.0f;
- return(camera);
-}
-
-
-/*!
- * Free a Lib3dsCamera object and all of its resources.
- *
- * \param camera Lib3dsCamera object to be freed.
- *
- * \ingroup camera
- */
-void
-lib3ds_camera_free(Lib3dsCamera *camera)
-{
- memset(camera, 0, sizeof(Lib3dsCamera));
- free(camera);
-}
-
-
-/*!
- * Dump information about a Lib3dsCamera object to stdout.
- *
- * \param camera Object to be dumped.
- *
- * \see lib3ds_file_dump_cameras
- *
- * \ingroup camera
- */
-void
-lib3ds_camera_dump(Lib3dsCamera *camera)
-{
- ASSERT(camera);
- printf(" name: %s\n", camera->name);
- printf(" position: (%f, %f, %f)\n",
- camera->position[0], camera->position[1], camera->position[2]);
- printf(" target (%f, %f, %f)\n",
- camera->target[0], camera->target[1], camera->target[2]);
- printf(" roll: %f\n", camera->roll);
- printf(" fov: %f\n", camera->fov);
- printf(" see_cone: %s\n", camera->see_cone ? "yes" : "no");
- printf(" near_range: %f\n", camera->near_range);
- printf(" far_range: %f\n", camera->far_range);
- printf("\n");
-}
-
-
-/*!
- * Read a camera definition from a file.
- *
- * This function is called by lib3ds_file_read(), and you probably
- * don't want to call it directly.
- *
- * \param camera A Lib3dsCamera to be filled in.
- * \param io A Lib3dsIo object previously set up by the caller.
- *
- * \return LIB3DS_TRUE on success, LIB3DS_FALSE on failure.
- *
- * \see lib3ds_file_read
- *
- * \ingroup camera
- */
-Lib3dsBool
-lib3ds_camera_read(Lib3dsCamera *camera, Lib3dsIo *io)
-{
- Lib3dsChunk c;
- Lib3dsWord chunk;
-
- if (!lib3ds_chunk_read_start(&c, LIB3DS_N_CAMERA, io)) {
- return(LIB3DS_FALSE);
- }
- {
- int i;
- for (i=0; i<3; ++i) {
- camera->position[i]=lib3ds_io_read_float(io);
- }
- for (i=0; i<3; ++i) {
- camera->target[i]=lib3ds_io_read_float(io);
- }
- }
- camera->roll=lib3ds_io_read_float(io);
- {
- float s;
- s=lib3ds_io_read_float(io);
- if (fabs(s)<LIB3DS_EPSILON) {
- camera->fov=45.0;
- }
- else {
- camera->fov=2400.0f/s;
- }
- }
- lib3ds_chunk_read_tell(&c, io);
-
- while ((chunk=lib3ds_chunk_read_next(&c, io))!=0) {
- switch (chunk) {
- case LIB3DS_CAM_SEE_CONE:
- {
- camera->see_cone=LIB3DS_TRUE;
- }
- break;
- case LIB3DS_CAM_RANGES:
- {
- camera->near_range=lib3ds_io_read_float(io);
- camera->far_range=lib3ds_io_read_float(io);
- }
- break;
- default:
- lib3ds_chunk_unknown(chunk);
- }
- }
-
- lib3ds_chunk_read_end(&c, io);
- return(LIB3DS_TRUE);
-}
-
-
-/*!
- * Write a camera definition to a file.
- *
- * This function is called by lib3ds_file_write(), and you probably
- * don't want to call it directly.
- *
- * \param camera A Lib3dsCamera to be written.
- * \param io A Lib3dsIo object previously set up by the caller.
- *
- * \return LIB3DS_TRUE on success, LIB3DS_FALSE on failure.
- *
- * \see lib3ds_file_write
- *
- * \ingroup camera
- */
-Lib3dsBool
-lib3ds_camera_write(Lib3dsCamera *camera, Lib3dsIo *io)
-{
- Lib3dsChunk c;
-
- c.chunk=LIB3DS_N_CAMERA;
- if (!lib3ds_chunk_write_start(&c,io)) {
- return(LIB3DS_FALSE);
- }
-
- lib3ds_io_write_vector(io, camera->position);
- lib3ds_io_write_vector(io, camera->target);
- lib3ds_io_write_float(io, camera->roll);
- if (fabs(camera->fov)<LIB3DS_EPSILON) {
- lib3ds_io_write_float(io, 2400.0f/45.0f);
- }
- else {
- lib3ds_io_write_float(io, 2400.0f/camera->fov);
- }
-
- if (camera->see_cone) {
- Lib3dsChunk c;
- c.chunk=LIB3DS_CAM_SEE_CONE;
- c.size=6;
- lib3ds_chunk_write(&c, io);
- }
- {
- Lib3dsChunk c;
- c.chunk=LIB3DS_CAM_RANGES;
- c.size=14;
- lib3ds_chunk_write(&c, io);
- lib3ds_io_write_float(io, camera->near_range);
- lib3ds_io_write_float(io, camera->far_range);
- }
-
- if (!lib3ds_chunk_write_end(&c,io)) {
- return(LIB3DS_FALSE);
- }
- return(LIB3DS_TRUE);
-}
-
-
-/*!
-
-\typedef Lib3dsCamera
- \ingroup camera
- \sa _Lib3dsCamera
-
-*/
projects / summerhack / blobdiff