1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
|
/*************************************************************************
* Copyright (C) 2009-2010 Tavian Barnes <tavianator@gmail.com> *
* *
* This file is part of The Dimension Benchmark Suite. *
* *
* The Dimension Benchmark 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 Benchmark 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/>. *
*************************************************************************/
#include "dimension-impl.h"
#include <sandglass.h>
#include <stdlib.h>
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;
return true;
}
static bool
dmnsn_fake_inside_fn(const dmnsn_object *object, dmnsn_vector point)
{
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);
}
static dmnsn_object *
dmnsn_new_fake_object(void)
{
dmnsn_object *object = dmnsn_new_object();
/* Generate a bounding box in (-1, -1, -1), (1, 1, 1) */
dmnsn_randomize_bounding_box(object);
object->intersection_fn = &dmnsn_fake_intersection_fn;
object->inside_fn = &dmnsn_fake_inside_fn;
return object;
}
int
main(void)
{
const size_t nobjects = 10000;
sandglass_t sandglass;
if (sandglass_init_monotonic(&sandglass, SANDGLASS_CPUTIME) != 0) {
perror("sandglass_create()");
return EXIT_FAILURE;
}
dmnsn_array *objects = dmnsn_new_array(sizeof(dmnsn_object *));
for (size_t i = 0; i < nobjects; ++i) {
dmnsn_object *object = dmnsn_new_fake_object();
dmnsn_initialize_object(object);
dmnsn_array_push(objects, &object);
}
dmnsn_prtree *tree;
sandglass_bench_noprecache(&sandglass, {
tree = dmnsn_new_prtree(objects);
});
printf("dmnsn_new_prtree(): %ld\n", sandglass.grains);
/* dmnsn_prtree_intersection() */
dmnsn_line ray = dmnsn_new_line(
dmnsn_new_vector( 1.0, 1.0, -2.0),
dmnsn_new_vector(-0.5, -0.5, 1.0)
);
dmnsn_intersection intersection;
sandglass_bench_fine(&sandglass, {
dmnsn_prtree_intersection(tree, ray, &intersection);
});
printf("dmnsn_prtree_intersection(): %ld\n", sandglass.grains);
/* dmnsn_prtree_inside() */
sandglass_bench_fine(&sandglass, {
dmnsn_prtree_inside(tree, dmnsn_zero);
});
printf("dmnsn_prtree_inside(): %ld\n", sandglass.grains);
/* Cleanup */
dmnsn_delete_prtree(tree);
for (size_t i = 0; i < nobjects; ++i) {
dmnsn_object *object;
dmnsn_array_get(objects, i, &object);
dmnsn_delete_object(object);
}
dmnsn_delete_array(objects);
return EXIT_SUCCESS;
}
|
