/*
Minetest-c55
Copyright (C) 2010-2012 celeron55, Perttu Ahola <celeron55@gmail.com>,
			  2012-2013 RealBadAngel, Maciej Kasatkin <mk@realbadangel.pl>
This program 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 2.1 of the License, or
(at your option) any later version.

This program 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, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/

#ifndef TREEGEN_HEADER
#define TREEGEN_HEADER

#include <matrix4.h>

class ManualMapVoxelManipulator;
class INodeDefManager;


namespace treegen
{

struct TreeDef
{
std::string initial_axiom;
std::string rules_a;
std::string rules_b;
std::string rules_c;
std::string rules_d;
MapNode trunknode;
MapNode leavesnode;
MapNode leaves2node;
int leaves2_chance;
int angle;
int iterations;
int iterations_random_level;
std::string trunk_type;
bool thin_branches;
MapNode fruitnode;
int fruit_chance;
};

	// Add default tree
	void make_tree(ManualMapVoxelManipulator &vmanip, v3s16 p0,
		bool is_apple_tree, INodeDefManager *ndef);

	// Add L-Systems tree (used by engine)
	void make_ltree(ManualMapVoxelManipulator &vmanip, v3s16 p0, INodeDefManager *ndef,
		TreeDef tree_definition);
	// Spawn L-systems tree from LUA
	void spawn_ltree (ServerEnvironment *env, v3s16 p0, INodeDefManager *ndef,
		TreeDef tree_definition);

	// L-System tree gen helper functions
	void tree_node_placement(ManualMapVoxelManipulator &vmanip, v3f p0,
		MapNode node);
	void tree_trunk_placement(ManualMapVoxelManipulator &vmanip, v3f p0,
		TreeDef &tree_definition);
	void tree_leaves_placement(ManualMapVoxelManipulator &vmanip, v3f p0,
		TreeDef &tree_definition);
	void tree_single_leaves_placement(ManualMapVoxelManipulator &vmanip, v3f p0,
		TreeDef &tree_definition);
	void tree_fruit_placement(ManualMapVoxelManipulator &vmanip, v3f p0,
		TreeDef &tree_definition);
	irr::core::matrix4 setRotationAxisRadians(irr::core::matrix4 M, double angle,v3f axis);

	v3f transposeMatrix(irr::core::matrix4 M ,v3f v);

}; // namespace treegen
#endif