vtm/source/helpers/vector.ts

/*
 * Verrückte Turing-Maschinen — A turing complete game
 * Copyright (C) 2016-2018 kcf <vidofnir@folksprak.org>
 * 
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 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 General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */

namespace lib_vector
	{
		
		/**
		 * @author kcf <vidofnir@folksprak.org>
		 */
		export type type_vector = {x : float; y : float;};
		
		
		/**
		 * @author kcf <vidofnir@folksprak.org>
		 */
		export function cartesian(x : float, y : float) : type_vector
			{
				return {"x": x, "y": y};
			}
		
		
		/**
		 * @author kcf <vidofnir@folksprak.org>
		 */
		export function polar(angle : float, radius : float = 1) : type_vector
			{
				return {"x": (radius * Math.cos(angle)), "y": (radius * Math.sin(angle))};
			}
		
		
		/**
		 * @author kcf <vidofnir@folksprak.org>
		 */
		export function scale(vector : type_vector, factor : float) : type_vector
			{
				return {"x": (vector.x * factor), "y": (vector.y * factor)};
			}
		
		
		/**
		 * @author kcf <vidofnir@folksprak.org>
		 */
		export function add(vector1 : type_vector, vector2 : type_vector) : type_vector
			{
				return {"x": (vector1.x + vector2.x), "y": (vector1.y + vector2.y)};
			}
		
	}