Mercurial > dive4elements > river
annotate artifacts/src/main/java/org/dive4elements/river/java2d/ShapeUtils.java @ 9801:1d7a72a50183 3.2.x tip
Assume Compose V2, consistently
author | Tom Gottfried <tom@intevation.de> |
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date | Thu, 23 Nov 2023 10:14:13 +0100 |
parents | af13ceeba52a |
children | ddcd52d239cd |
rev | line source |
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1 /* Copyright (C) 2011, 2012, 2013 by Bundesanstalt für Gewässerkunde |
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2 * Software engineering by Intevation GmbH |
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3 * |
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4 * This file is Free Software under the GNU AGPL (>=v3) |
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5 * and comes with ABSOLUTELY NO WARRANTY! Check out the |
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6 * documentation coming with Dive4Elements River for details. |
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7 */ |
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8 |
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9 package org.dive4elements.river.java2d; |
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10 |
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11 import java.awt.Shape; |
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12 |
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13 import java.awt.geom.AffineTransform; |
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14 import java.awt.geom.Ellipse2D; |
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15 import java.awt.geom.GeneralPath; |
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16 import java.awt.geom.Rectangle2D; |
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17 |
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18 import java.util.HashMap; |
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19 import java.util.Map; |
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20 |
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21 public class ShapeUtils |
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22 { |
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23 // TODO: Use enum |
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24 public static final int MEASURED = 0; |
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25 public static final int DIGITIZED = 1; |
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26 public static final int INTERPOLATED = 2; |
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27 |
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28 public static final boolean DIGITIZED_FILL = false; |
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29 public static final boolean MEASURED_FILL = true; |
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30 public static final boolean INTERPOLATED_FILL = false; |
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31 |
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32 public static final Shape DIGITIZED_SHAPE = |
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33 createCross(4f); |
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34 |
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35 public static final Shape MEASURED_SHAPE = |
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36 new Rectangle2D.Double(-2, -2, 4, 4); |
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37 |
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38 public static final Shape INTERPOLATED_SHAPE = |
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39 new Ellipse2D.Double(-2, -2, 4, 4); |
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40 |
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41 protected static Map<Long, Shape> scaledShapesCache = |
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42 new HashMap<Long, Shape>(); |
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43 |
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44 public static final Shape createCross(float size) { |
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45 float half = size * 0.5f; |
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46 GeneralPath p = new GeneralPath(); |
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47 p.moveTo(-half, -half); |
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48 p.lineTo(half, half); |
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49 p.closePath(); |
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50 p.moveTo(-half, half); |
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51 p.lineTo(half, -half); |
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52 p.closePath(); |
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53 return p; |
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54 } |
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55 |
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56 public static Shape scale(Shape shape, float factor) { |
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57 if (factor == 1f) { |
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58 return shape; |
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59 } |
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60 AffineTransform xform = |
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61 AffineTransform.getScaleInstance(factor, factor); |
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62 |
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63 GeneralPath gp = new GeneralPath(shape); |
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64 return gp.createTransformedShape(xform); |
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65 } |
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66 |
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67 public static synchronized Shape getScaledShape(int type, float size) { |
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68 |
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69 Long hash = Long.valueOf( |
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70 (((long)type) << 32) | Float.floatToIntBits(size)); |
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71 |
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72 Shape shape = scaledShapesCache.get(hash); |
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73 |
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74 if (shape == null) { |
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75 switch (type) { |
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76 case MEASURED: |
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77 shape = MEASURED_SHAPE; |
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78 break; |
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79 case DIGITIZED: |
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80 shape = DIGITIZED_SHAPE; |
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81 break; |
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82 default: |
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83 shape = INTERPOLATED_SHAPE; |
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84 } |
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85 scaledShapesCache.put(hash, shape = scale(shape, size)); |
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86 } |
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87 |
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88 return shape; |
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89 } |
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90 } |
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91 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |