1 files changed, 55 insertions, 0 deletions
diff --git a/core/math/bvh_misc.inc b/core/math/bvh_misc.inc
new file mode 100644
index 0000000000..71aa0e4fe0
--- /dev/null
+++ b/core/math/bvh_misc.inc
@@ -0,0 +1,55 @@
+
+int _handle_get_tree_id(BVHHandle p_handle) const {
+	if (USE_PAIRS) {
+		int tree = 0;
+		if (_extra[p_handle.id()].pairable) {
+			tree = 1;
+		}
+		return tree;
+	}
+	return 0;
+}
+
+public:
+void _handle_sort(BVHHandle &p_ha, BVHHandle &p_hb) const {
+	if (p_ha.id() > p_hb.id()) {
+		BVHHandle temp = p_hb;
+		p_hb = p_ha;
+		p_ha = temp;
+	}
+}
+
+private:
+void create_root_node(int p_tree) {
+	// if there is no root node, create one
+	if (_root_node_id[p_tree] == BVHCommon::INVALID) {
+		uint32_t root_node_id;
+		TNode *node = _nodes.request(root_node_id);
+		node->clear();
+		_root_node_id[p_tree] = root_node_id;
+
+		// make the root node a leaf
+		uint32_t leaf_id;
+		TLeaf *leaf = _leaves.request(leaf_id);
+		leaf->clear();
+		node->neg_leaf_id = -(int)leaf_id;
+	}
+}
+
+bool node_is_leaf_full(TNode &tnode) const {
+	const TLeaf &leaf = _node_get_leaf(tnode);
+	return leaf.is_full();
+}
+
+public:
+TLeaf &_node_get_leaf(TNode &tnode) {
+	BVH_ASSERT(tnode.is_leaf());
+	return _leaves[tnode.get_leaf_id()];
+}
+
+const TLeaf &_node_get_leaf(const TNode &tnode) const {
+	BVH_ASSERT(tnode.is_leaf());
+	return _leaves[tnode.get_leaf_id()];
+}
+
+private: