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annotate dwtx/draw2d/Bendpoint.d @ 98:95307ad235d9

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Added Draw2d code, still work in progress
author Frank Benoit <benoit@tionex.de>
date Sun, 03 Aug 2008 00:52:14 +0200
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1 /*******************************************************************************
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2 * Copyright (c) 2000, 2005 IBM Corporation and others.
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3 * All rights reserved. This program and the accompanying materials
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4 * are made available under the terms of the Eclipse Public License v1.0
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5 * which accompanies this distribution, and is available at
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6 * http://www.eclipse.org/legal/epl-v10.html
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7 *
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8 * Contributors:
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9 * IBM Corporation - initial API and implementation
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10 * Port to the D programming language:
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11 * Frank Benoit <benoit@tionex.de>
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12 *******************************************************************************/
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13 module dwtx.draw2d.Bendpoint;
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15 import dwt.dwthelper.utils;
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17 import dwtx.draw2d.geometry.Point;
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19 /**
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20 * A helper used to calculate the point at which a {@link dwtx.draw2d.Connection}
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21 * should bend. A bendpoint returns a point <em>relative</em> to the connection figure on
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22 * which it is being used. This was chosen so that fixed bendpoints would be easy to
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23 * implement. A fixed bendpoint will have a fixed x and y value. Although the absolute x
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24 * and y location change during zoom and scrolling, the relative values stay the same.
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25 */
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26 public interface Bendpoint {
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27
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28 /**
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29 * Returns the location of the bendpoint <em>relative</em> to the connection. The returned
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30 * value may be by reference. The caller should NOT modify the returned value.
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31 *
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32 * @return the location of the bendpoint relative to the Connection
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33 */
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34 Point getLocation();
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35
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36 }