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authorTavian Barnes <tavianator@gmail.com>2009-10-05 16:47:57 +0000
committerTavian Barnes <tavianator@gmail.com>2009-10-05 16:47:57 +0000
commitf3ca60606f557f24b615860e1142c70c93802fc5 (patch)
tree8448cf64e40c5e7495e725ba3587514c5be88e06
parentcea53848d3469fcae387c9f6ae689220d2385a56 (diff)
downloaddimension-f3ca60606f557f24b615860e1142c70c93802fc5.tar.xz
Begin kD splay tree implementation.
-rw-r--r--libdimension/dimension_impl.h27
-rw-r--r--libdimension/kD_splay_tree.c68
-rw-r--r--libdimension/kD_splay_tree.h47
3 files changed, 142 insertions, 0 deletions
diff --git a/libdimension/dimension_impl.h b/libdimension/dimension_impl.h
new file mode 100644
index 0000000..216302a
--- /dev/null
+++ b/libdimension/dimension_impl.h
@@ -0,0 +1,27 @@
+/*************************************************************************
+ * Copyright (C) 2009 Tavian Barnes <tavianator@gmail.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/>. *
+ *************************************************************************/
+
+#ifndef DIMENSION_IMPL_H
+#define DIMENSION_IMPL_H
+
+#include "dimension.h"
+#include "kD_splay_tree.h"
+
+#endif /* DIMENSION_IMPL_H */
diff --git a/libdimension/kD_splay_tree.c b/libdimension/kD_splay_tree.c
new file mode 100644
index 0000000..24987c4
--- /dev/null
+++ b/libdimension/kD_splay_tree.c
@@ -0,0 +1,68 @@
+/*************************************************************************
+ * Copyright (C) 2009 Tavian Barnes <tavianator@gmail.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/>. *
+ *************************************************************************/
+
+#include "dimension_impl.h"
+#include <stdlib.h>
+
+static dmnsn_kD_splay_node *
+dmnsn_new_kD_splay_node()
+{
+ dmnsn_kD_splay_node *node = malloc(sizeof(dmnsn_kD_splay_node));
+ if (!node) {
+ dmnsn_error(DMNSN_SEVERITY_HIGH, "kD splay tree node allocation failed.");
+ }
+ return node;
+}
+
+static void
+dmnsn_delete_kD_splay_node(dmnsn_kD_splay_node *node)
+{
+ free(node);
+}
+
+/* Return an empty tree */
+dmnsn_kD_splay_node *
+dmnsn_new_kD_splay_tree()
+{
+ return NULL;
+}
+
+/* Copy a kD splay tree */
+dmnsn_kD_splay_node *dmnsn_kD_splay_copy(dmnsn_kD_splay_node *root)
+{
+ dmnsn_kD_splay_node *node = NULL;
+ if (root) {
+ node = dmnsn_new_kD_splay_node();
+ *node = *root;
+ node->left = dmnsn_kD_splay_copy(node->left);
+ node->right = dmnsn_kD_splay_copy(node->right);
+ }
+ return node;
+}
+
+void
+dmnsn_delete_kD_splay_tree(dmnsn_kD_splay_node *root)
+{
+ if (root) {
+ dmnsn_delete_kD_splay_tree(root->left);
+ dmnsn_delete_kD_splay_tree(root->right);
+ dmnsn_delete_kD_splay_node(root);
+ }
+}
diff --git a/libdimension/kD_splay_tree.h b/libdimension/kD_splay_tree.h
new file mode 100644
index 0000000..2b778fa
--- /dev/null
+++ b/libdimension/kD_splay_tree.h
@@ -0,0 +1,47 @@
+/*************************************************************************
+ * Copyright (C) 2009 Tavian Barnes <tavianator@gmail.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/>. *
+ *************************************************************************/
+
+#ifndef DIMENSION_IMPL_KD_SPLAY_TREE_H
+#define DIMENSION_IMPL_KD_SPLAY_TREE_H
+
+typedef struct dmnsn_kD_splay_node dmnsn_kD_splay_node;
+
+struct dmnsn_kD_splay_node {
+ /* Tree children */
+ dmnsn_kD_splay_node *left, *right;
+
+ /* Parent node for easy backtracking */
+ dmnsn_kD_splay_node *parent;
+
+ /* Bounding box corners */
+ dmnsn_vector min, max;
+
+ /* Node payload */
+ dmnsn_object *object;
+};
+
+dmnsn_kD_splay_node *dmnsn_new_kD_splay_tree();
+dmnsn_kD_splay_node *dmnsn_kD_splay_copy(dmnsn_kD_splay_node *root);
+void dmnsn_delete_kD_splay_tree(dmnsn_kD_splay_node *root);
+
+dmnsn_kD_splay_node *dmnsn_kD_splay_insert(dmnsn_kD_splay_node *root,
+ dmnsn_object *object);
+
+#endif /* DIMENSION_IMPL_KD_SPLAY_TREE_H */