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-rw-r--r--bench/libdimension/Makefile.am8
-rw-r--r--bench/libdimension/kD_splay_tree.c133
2 files changed, 139 insertions, 2 deletions
diff --git a/bench/libdimension/Makefile.am b/bench/libdimension/Makefile.am
index 076f7f5..609ecd5 100644
--- a/bench/libdimension/Makefile.am
+++ b/bench/libdimension/Makefile.am
@@ -19,7 +19,7 @@
INCLUDES = -I$(top_srcdir)/libdimension
-EXTRA_PROGRAMS = bench-array bench-geometry
+EXTRA_PROGRAMS = bench-array bench-geometry bench-kD_splay_tree
bench_array_SOURCES = array.c
bench_array_LDADD = -lsandglass $(top_srcdir)/libdimension/libdimension.la
@@ -27,8 +27,12 @@ bench_array_LDADD = -lsandglass $(top_srcdir)/libdimension/libdimension.la
bench_geometry_SOURCES = geometry.c
bench_geometry_LDADD = -lsandglass $(top_srcdir)/libdimension/libdimension.la
-bench: bench-array$(EXEEXT) bench-geometry$(EXEEXT)
+bench_kD_splay_tree_SOURCES = kD_splay_tree.c
+bench_kD_splay_tree_LDADD = -lsandglass $(top_srcdir)/libdimension/libdimension.la
+
+bench: bench-array$(EXEEXT) bench-geometry$(EXEEXT) bench-kD_splay_tree$(EXEEXT)
./bench-array$(EXEEXT)
./bench-geometry$(EXEEXT)
+ ./bench-kD_splay_tree$(EXEEXT)
.PHONY: bench
diff --git a/bench/libdimension/kD_splay_tree.c b/bench/libdimension/kD_splay_tree.c
new file mode 100644
index 0000000..d6d0936
--- /dev/null
+++ b/bench/libdimension/kD_splay_tree.c
@@ -0,0 +1,133 @@
+/*************************************************************************
+ * Copyright (C) 2009 Tavian Barnes <tavianator@gmail.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/>. *
+ *************************************************************************/
+
+#include "../../libdimension/dimension_impl.h"
+#include <sandglass.h>
+#include <stdlib.h>
+
+dmnsn_intersection *
+dmnsn_fake_intersection_fn(const dmnsn_object *object, dmnsn_line line)
+{
+ dmnsn_intersection *intersection = dmnsn_new_intersection();
+ intersection->t = (object->min.z - line.x0.z)/line.n.z;
+ intersection->texture = object->texture;
+ return intersection;
+}
+
+dmnsn_vector
+dmnsn_random_vector(dmnsn_vector min)
+{
+ dmnsn_vector ret;
+ ret.x = 2.0*((double)rand())/RAND_MAX - 1.0;
+ ret.y = 2.0*((double)rand())/RAND_MAX - 1.0;
+ ret.z = 2.0*((double)rand())/RAND_MAX - 1.0;
+ if (ret.x < min.x) ret.x += 2.0;
+ if (ret.y < min.y) ret.y += 2.0;
+ if (ret.z < min.z) ret.z += 2.0;
+ return ret;
+}
+
+int
+main()
+{
+ dmnsn_kD_splay_tree *tree;
+ dmnsn_object *object;
+ dmnsn_array *objects;
+ dmnsn_intersection *intersection;
+ dmnsn_line ray;
+ unsigned int i;
+ long grains;
+ const unsigned int nobjects = 128;
+
+ sandglass_t sandglass;
+ sandglass_attributes_t attr = { SANDGLASS_MONOTONIC, SANDGLASS_CPUTIME };
+
+ if (sandglass_create(&sandglass, &attr, &attr) != 0) {
+ perror("sandglass_create()");
+ return EXIT_FAILURE;
+ }
+
+ tree = dmnsn_new_kD_splay_tree();
+ objects = dmnsn_new_array(sizeof(dmnsn_object *));
+
+ for (i = 0; i < nobjects; ++i) {
+ object = dmnsn_new_object();
+ if (!object) {
+ fprintf(stderr, "--- Couldn't allocate object! ---\n");
+ return EXIT_FAILURE;
+ }
+
+ /* Generate a bounding box in (-1, -1, -1), (1, 1, 1) */
+ object->min = dmnsn_random_vector(dmnsn_vector_construct(-1.0, -1.0, -1.0));
+ object->max = dmnsn_random_vector(object->min);
+ object->intersection_fn = &dmnsn_fake_intersection_fn;
+ dmnsn_array_push(objects, &object);
+ }
+
+ /* dmnsn_kD_splay_insert() */
+
+ sandglass_begin(&sandglass);
+ sandglass_elapse(&sandglass);
+
+ sandglass_begin(&sandglass);
+ sandglass_elapse(&sandglass);
+ sandglass.baseline = sandglass.grains;
+
+ grains = 0;
+ for (i = 0; i < nobjects; ++i) {
+ dmnsn_array_get(objects, i, &object);
+
+ sandglass_begin(&sandglass);
+ dmnsn_kD_splay_insert(tree, object);
+ sandglass_elapse(&sandglass);
+
+ sandglass.grains += grains;
+ grains = sandglass.grains;
+ }
+ printf("dmnsn_kD_splay_insert(): %ld\n", sandglass.grains/nobjects);
+
+ /* dmnsn_kD_splay_search() */
+
+ ray.x0 = dmnsn_vector_construct(0.0, 0.0, -2.0);
+ ray.n = dmnsn_vector_construct(0.0, 0.0, 1.0);
+
+ dmnsn_delete_intersection((*object->intersection_fn)(object, ray));
+ sandglass_begin(&sandglass);
+ sandglass_elapse(&sandglass);
+
+ sandglass_begin(&sandglass);
+ sandglass_elapse(&sandglass);
+ sandglass.baseline = sandglass.grains;
+
+ sandglass_begin(&sandglass);
+ intersection = dmnsn_kD_splay_search(tree, ray);
+ sandglass_elapse(&sandglass);
+ dmnsn_delete_intersection(intersection);
+ printf("dmnsn_kD_splay_search(): %ld\n", sandglass.grains);
+
+ /* Cleanup */
+ dmnsn_delete_kD_splay_tree(tree);
+ for (i = 0; i < nobjects; ++i) {
+ dmnsn_array_get(objects, i, &object);
+ dmnsn_delete_object(object);
+ }
+ dmnsn_delete_array(objects);
+
+ return EXIT_SUCCESS;
+}