Begin kD splay tree implementation.

1 files changed, 47 insertions, 0 deletions

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 */