/*************************************************************************/
/*  shape_line_2d.cpp                                                    */
/*************************************************************************/
/*                       This file is part of:                           */
/*                           GODOT ENGINE                                */
/*                      https://godotengine.org                          */
/*************************************************************************/
/* Copyright (c) 2007-2018 Juan Linietsky, Ariel Manzur.                 */
/* Copyright (c) 2014-2018 Godot Engine contributors (cf. AUTHORS.md)    */
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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.       */
/*                                                                       */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
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/*************************************************************************/
#include "shape_line_2d.h"
#include "servers/physics_2d_server.h"
#include "servers/visual_server.h"
void LineShape2D::_update_shape() {

	Array arr;
	arr.push_back(normal);
	arr.push_back(d);
	Physics2DServer::get_singleton()->shape_set_data(get_rid(), arr);
	emit_changed();
}

void LineShape2D::set_normal(const Vector2 &p_normal) {

	normal = p_normal;
	_update_shape();
}

void LineShape2D::set_d(real_t p_d) {

	d = p_d;
	_update_shape();
}

Vector2 LineShape2D::get_normal() const {

	return normal;
}
real_t LineShape2D::get_d() const {

	return d;
}

void LineShape2D::draw(const RID &p_to_rid, const Color &p_color) {

	Vector2 point = get_d() * get_normal();

	Vector2 l1[2] = { point - get_normal().tangent() * 100, point + get_normal().tangent() * 100 };
	VS::get_singleton()->canvas_item_add_line(p_to_rid, l1[0], l1[1], p_color, 3);
	Vector2 l2[2] = { point, point + get_normal() * 30 };
	VS::get_singleton()->canvas_item_add_line(p_to_rid, l2[0], l2[1], p_color, 3);
}
Rect2 LineShape2D::get_rect() const {

	Vector2 point = get_d() * get_normal();

	Vector2 l1[2] = { point - get_normal().tangent() * 100, point + get_normal().tangent() * 100 };
	Vector2 l2[2] = { point, point + get_normal() * 30 };
	Rect2 rect;
	rect.position = l1[0];
	rect.expand_to(l1[1]);
	rect.expand_to(l2[0]);
	rect.expand_to(l2[1]);
	return rect;
}

void LineShape2D::_bind_methods() {

	ClassDB::bind_method(D_METHOD("set_normal", "normal"), &LineShape2D::set_normal);
	ClassDB::bind_method(D_METHOD("get_normal"), &LineShape2D::get_normal);

	ClassDB::bind_method(D_METHOD("set_d", "d"), &LineShape2D::set_d);
	ClassDB::bind_method(D_METHOD("get_d"), &LineShape2D::get_d);

	ADD_PROPERTY(PropertyInfo(Variant::VECTOR2, "normal"), "set_normal", "get_normal");
	ADD_PROPERTY(PropertyInfo(Variant::REAL, "d"), "set_d", "get_d");
}

LineShape2D::LineShape2D() :
		Shape2D(Physics2DServer::get_singleton()->line_shape_create()) {

	normal = Vector2(0, -1);
	d = 0;
	_update_shape();
}