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/*************************************************************************
* Copyright (C) 2010-2011 Tavian Barnes <tavianator@tavianator.com> *
* *
* This file is part of The Dimension Test Suite. *
* *
* The Dimension Test Suite is free software; you can redistribute it *
* and/or modify it under the terms of the GNU 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 Test Suite 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 *
* General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program. If not, see <http://www.gnu.org/licenses/>. *
*************************************************************************/
/*
* Basic tests of PR-trees
*/
#include "dimension-impl.h"
#include "../../libdimension/prtree.c" /* For DMNSN_PRTREE_B */
#include <stdio.h>
#include <stdlib.h>
unsigned int calls = 0;
static bool
dmnsn_fake_intersection_fn(const dmnsn_object *object, dmnsn_line line,
dmnsn_intersection *intersection)
{
intersection->t = (object->bounding_box.min.z - line.x0.z)/line.n.z;
intersection->normal = dmnsn_x;
++calls;
return true;
}
static void
dmnsn_randomize_bounding_box(dmnsn_object *object)
{
dmnsn_vector a, b;
a.x = 2.0*((double)rand())/RAND_MAX - 1.0;
a.y = 2.0*((double)rand())/RAND_MAX - 1.0;
a.z = 2.0*((double)rand())/RAND_MAX - 1.0;
b.x = 2.0*((double)rand())/RAND_MAX - 1.0;
b.y = 2.0*((double)rand())/RAND_MAX - 1.0;
b.z = 2.0*((double)rand())/RAND_MAX - 1.0;
object->bounding_box.min = dmnsn_vector_min(a, b);
object->bounding_box.max = dmnsn_vector_max(a, b);
}
int
main(void)
{
/* Treat warnings as errors for tests */
dmnsn_die_on_warnings(true);
const size_t nobjects = 128;
dmnsn_scene *scene = dmnsn_new_scene();
for (size_t i = 0; i < nobjects; ++i) {
dmnsn_object *object = dmnsn_new_object();
dmnsn_randomize_bounding_box(object);
object->intersection_fn = dmnsn_fake_intersection_fn;
dmnsn_initialize_object(object);
dmnsn_array_push(scene->objects, &object);
}
dmnsn_prtree *prtree = dmnsn_new_prtree(scene->objects);
dmnsn_intersection intersection;
dmnsn_line ray = dmnsn_new_line(
dmnsn_new_vector(0.0, 0.0, -2.0),
dmnsn_new_vector(0.0, 0.0, 1.0)
);
if (!dmnsn_prtree_intersection(prtree, ray, &intersection)) {
fprintf(stderr, "--- Didn't find intersection! ---\n");
return EXIT_FAILURE;
}
if (calls > DMNSN_PRTREE_B) {
fprintf(stderr,
"--- Too many intersection function calls: %u! ---\n",
calls);
return EXIT_FAILURE;
}
dmnsn_delete_prtree(prtree);
dmnsn_delete_scene(scene);
return EXIT_SUCCESS;
}
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