001/* 002* Airfoil -- The interface in common to all airfoil type objects. 003* 004* Copyright (C) 2000-2025, by Joseph A. Huwaldt. All rights reserved. 005* 006* This library is free software; you can redistribute it and/or 007* modify it under the terms of the GNU Lesser General Public 008* License as published by the Free Software Foundation; either 009* version 2.1 of the License, or (at your option) any later version. 010* 011* This library is distributed in the hope that it will be useful, 012* but WITHOUT ANY WARRANTY; without even the implied warranty of 013* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 014* Lesser General Public License for more details. 015* 016* You should have received a copy of the GNU Lesser General Public License 017* along with this program; if not, write to the Free Software 018* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. 019* Or visit: http://www.gnu.org/licenses/lgpl.html 020*/ 021package jahuwaldt.aero.airfoils; 022 023import java.util.List; 024import java.awt.geom.Point2D; 025 026 027/** 028* Defines the interface in common to all airfoil type objects. 029* 030* <p> Modified by: Joseph A. Huwaldt </p> 031* 032* @author Joseph A. Huwaldt Date: October 8, 2000 033* @version February 22, 2025 034*/ 035public interface Airfoil extends java.io.Serializable { 036 037 /** 038 * Returns a list of points containing the abscissas (X coordinate) and 039 * ordinates (Y coordinate) of the points defining the upper surface of the airfoil. 040 * 041 * @return A list of points containing the abscissas (X coordinate) and 042 * ordinates (Y coordinate) of the points defining the upper surface of the airfoil. 043 */ 044 public List<Point2D> getUpper(); 045 046 /** 047 * Returns a list of points containing the abscissas (X coordinate) and 048 * ordinates (Y coordinate) of the points defining the lower surface of the airfoil. 049 * 050 * @return A list of points containing the abscissas (X coordinate) and 051 * ordinates (Y coordinate) of the points defining the lower surface of the airfoil. 052 */ 053 public List<Point2D> getLower(); 054 055 /** 056 * Returns a list of points containing the camber line of the airfoil. 057 * 058 * @return A list of points containing the camber line of the airfoil. 059 */ 060 public List<Point2D> getCamber(); 061 062 /** 063 * Returns a list containing the slope (dy/dx) of the upper 064 * surface of the airfoil at each ordinate. 065 * 066 * @return A list containing the slope (dy/dx) of the upper 067 * surface of the airfoil at each ordinate. 068 */ 069 public List<Double> getUpperYp(); 070 071 /** 072 * Returns a list containing the slope (dy/dx) of the lower 073 * surface of the airfoil at each ordinate. 074 * 075 * @return A list containing the slope (dy/dx) of the lower 076 * surface of the airfoil at each ordinate. 077 */ 078 public List<Double> getLowerYp(); 079 080} 081