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/*************************************************************************
* Copyright (C) 2009-2011 Tavian Barnes <tavianator@tavianator.com> *
* *
* This file is part of The Dimension Library. *
* *
* The Dimension Library 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 3 of the *
* License, or (at your option) any later version. *
* *
* The Dimension Library 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, see *
* <http://www.gnu.org/licenses/>. *
*************************************************************************/
/**
* @file
* Objects.
*/
#include "dimension.h"
#include <stdlib.h>
/* Allocate a dummy object */
dmnsn_object *
dmnsn_new_object(void)
{
dmnsn_object *object = dmnsn_malloc(sizeof(dmnsn_object));
object->texture = NULL;
object->interior = NULL;
object->trans = dmnsn_identity_matrix();
object->children = dmnsn_new_array(sizeof(dmnsn_object *));
object->intersection_fn = NULL;
object->inside_fn = NULL;
object->initialize_fn = NULL;
object->free_fn = NULL;
return object;
}
/* Free a dummy object */
void
dmnsn_delete_object(dmnsn_object *object)
{
if (object) {
DMNSN_ARRAY_FOREACH (dmnsn_object **, child, object->children) {
dmnsn_delete_object(*child);
}
dmnsn_delete_array(object->children);
dmnsn_delete_interior(object->interior);
dmnsn_delete_texture(object->texture);
if (object->free_fn) {
object->free_fn(object->ptr);
}
dmnsn_free(object);
}
}
/* Precompute object properties */
void
dmnsn_initialize_object(dmnsn_object *object)
{
/* Don't double-init textures */
bool should_init = false;
dmnsn_matrix old_trans = object->trans;
if (object->texture) {
DMNSN_INCREF(object->texture);
should_init = object->texture->should_init;
object->texture->should_init = false;
}
if (object->interior) {
DMNSN_INCREF(object->interior);
}
if (object->initialize_fn) {
object->initialize_fn(object);
}
object->bounding_box
= dmnsn_transform_bounding_box(object->trans, object->bounding_box);
object->trans_inv = dmnsn_matrix_inverse(object->trans);
if (should_init) {
/* Transform the texture with the object */
object->texture->trans
= dmnsn_matrix_mul(old_trans, object->texture->trans);
dmnsn_initialize_texture(object->texture);
}
}
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