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/*************************************************************************
* Copyright (C) 2010-2014 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/>. *
*************************************************************************/
/**
* @file
* Basic tests of PR-trees.
*/
#include "../../platform/platform.c"
#include "../../concurrency/threads.c"
#include "../../concurrency/future.c"
#include "../../bvh/bvh.c"
#include "../../bvh/prtree.c"
#include <stdio.h>
#include <stdlib.h>
static unsigned int calls = 0;
static bool
dmnsn_fake_intersection_fn(const dmnsn_object *object, dmnsn_ray ray,
dmnsn_intersection *intersection)
{
intersection->t = (object->aabb.min.Z - ray.x0.Z)/ray.n.Z;
intersection->normal = dmnsn_x;
++calls;
return true;
}
static void
dmnsn_randomize_aabb(dmnsn_object *object)
{
dmnsn_vector a, b;
for (unsigned int i = 0; i < 3; ++i) {
a.n[i] = 2.0*((double)rand())/RAND_MAX - 1.0;
b.n[i] = 2.0*((double)rand())/RAND_MAX - 1.0;
}
object->aabb.min = dmnsn_vector_min(a, b);
object->aabb.max = dmnsn_vector_max(a, b);
}
static const dmnsn_object_vtable dmnsn_fake_vtable = {
.intersection_fn = dmnsn_fake_intersection_fn,
};
static dmnsn_object *
dmnsn_new_fake_object(dmnsn_pool *pool)
{
dmnsn_object *object = dmnsn_new_object(pool);
dmnsn_randomize_aabb(object);
object->vtable = &dmnsn_fake_vtable;
object->trans_inv = dmnsn_identity_matrix();
return object;
}
int
main(void)
{
// Treat warnings as errors for tests
dmnsn_die_on_warnings(true);
dmnsn_pool *pool = dmnsn_new_pool();
const size_t nobjects = 128;
dmnsn_array *objects = DMNSN_PALLOC_ARRAY(pool, dmnsn_object *);
for (size_t i = 0; i < nobjects; ++i) {
dmnsn_object *object = dmnsn_new_fake_object(pool);
dmnsn_array_push(objects, &object);
}
dmnsn_bvh *bvh = dmnsn_new_bvh(objects, DMNSN_BVH_PRTREE);
dmnsn_intersection intersection;
dmnsn_ray ray = dmnsn_new_ray(
dmnsn_new_vector(0.0, 0.0, -2.0),
dmnsn_new_vector(0.0, 0.0, 1.0)
);
if (!dmnsn_bvh_intersection(bvh, ray, &intersection, true)) {
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_bvh(bvh);
dmnsn_delete_pool(pool);
return EXIT_SUCCESS;
}
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