/*************************************************************************/
/*  plane_shape.cpp                                                      */
/*************************************************************************/
/*                       This file is part of:                           */
/*                           GODOT ENGINE                                */
/*                    http://www.godotengine.org                         */
/*************************************************************************/
/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur.                 */
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/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the       */
/* "Software"), to deal in the Software without restriction, including   */
/* without limitation the rights to use, copy, modify, merge, publish,   */
/* distribute, sublicense, and/or sell copies of the Software, and to    */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions:                                             */
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/* The above copyright notice and this permission notice shall be        */
/* included in all copies or substantial portions of the Software.       */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/*************************************************************************/
#include "plane_shape.h"

#include "servers/physics_server.h"

Vector<Vector3> PlaneShape::_gen_debug_mesh_lines() {

	Plane p = get_plane();
	Vector<Vector3> points;

	Vector3 n1 = p.get_any_perpendicular_normal();
	Vector3 n2 = p.normal.cross(n1).normalized();

	Vector3 pface[4] = {
		p.normal * p.d + n1 * 10.0 + n2 * 10.0,
		p.normal * p.d + n1 * 10.0 + n2 * -10.0,
		p.normal * p.d + n1 * -10.0 + n2 * -10.0,
		p.normal * p.d + n1 * -10.0 + n2 * 10.0,
	};

	points.push_back(pface[0]);
	points.push_back(pface[1]);
	points.push_back(pface[1]);
	points.push_back(pface[2]);
	points.push_back(pface[2]);
	points.push_back(pface[3]);
	points.push_back(pface[3]);
	points.push_back(pface[0]);
	points.push_back(p.normal * p.d);
	points.push_back(p.normal * p.d + p.normal * 3);

	return points;
}

void PlaneShape::_update_shape() {

	PhysicsServer::get_singleton()->shape_set_data(get_shape(), plane);
}

void PlaneShape::set_plane(Plane p_plane) {

	plane = p_plane;
	_update_shape();
	notify_change_to_owners();
	_change_notify("plane");
}

Plane PlaneShape::get_plane() const {

	return plane;
}

void PlaneShape::_bind_methods() {

	ClassDB::bind_method(D_METHOD("set_plane", "plane"), &PlaneShape::set_plane);
	ClassDB::bind_method(D_METHOD("get_plane"), &PlaneShape::get_plane);

	ADD_PROPERTY(PropertyInfo(Variant::PLANE, "plane"), "set_plane", "get_plane");
}

PlaneShape::PlaneShape()
	: Shape(PhysicsServer::get_singleton()->shape_create(PhysicsServer::SHAPE_PLANE)) {

	set_plane(Plane(0, 1, 0, 0));
}