Mercurial > dive4elements > river
comparison flys-artifacts/src/main/java/de/intevation/flys/java2d/ShapeUtils.java @ 3468:f37e7e8907cb
merged flys-artifacts/2.8.1
| author | Thomas Arendsen Hein <thomas@intevation.de> |
|---|---|
| date | Fri, 28 Sep 2012 12:14:39 +0200 |
| parents | 0d8146989012 |
| children |
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| 3387:5ffad8bde8ad | 3468:f37e7e8907cb |
|---|---|
| 1 package de.intevation.flys.java2d; | |
| 2 | |
| 3 import java.awt.Shape; | |
| 4 | |
| 5 import java.awt.geom.AffineTransform; | |
| 6 import java.awt.geom.Ellipse2D; | |
| 7 import java.awt.geom.GeneralPath; | |
| 8 import java.awt.geom.Rectangle2D; | |
| 9 | |
| 10 import java.util.HashMap; | |
| 11 import java.util.Map; | |
| 12 | |
| 13 public class ShapeUtils | |
| 14 { | |
| 15 // TODO: Use enum | |
| 16 public static final int MEASURED = 0; | |
| 17 public static final int DIGITIZED = 1; | |
| 18 public static final int INTERPOLATED = 2; | |
| 19 | |
| 20 public static final boolean DIGITIZED_FILL = false; | |
| 21 public static final boolean MEASURED_FILL = true; | |
| 22 public static final boolean INTERPOLATED_FILL = false; | |
| 23 | |
| 24 public static final Shape DIGITIZED_SHAPE = | |
| 25 createCross(4f); | |
| 26 | |
| 27 public static final Shape MEASURED_SHAPE = | |
| 28 new Rectangle2D.Double(-2, -2, 4, 4); | |
| 29 | |
| 30 public static final Shape INTERPOLATED_SHAPE = | |
| 31 new Ellipse2D.Double(-2, -2, 4, 4); | |
| 32 | |
| 33 protected static Map<Long, Shape> scaledShapesCache = | |
| 34 new HashMap<Long, Shape>(); | |
| 35 | |
| 36 public static final Shape createCross(float size) { | |
| 37 float half = size * 0.5f; | |
| 38 GeneralPath p = new GeneralPath(); | |
| 39 p.moveTo(-half, -half); | |
| 40 p.lineTo(half, half); | |
| 41 p.closePath(); | |
| 42 p.moveTo(-half, half); | |
| 43 p.lineTo(half, -half); | |
| 44 p.closePath(); | |
| 45 return p; | |
| 46 } | |
| 47 | |
| 48 public static Shape scale(Shape shape, float factor) { | |
| 49 if (factor == 1f) { | |
| 50 return shape; | |
| 51 } | |
| 52 AffineTransform xform = | |
| 53 AffineTransform.getScaleInstance(factor, factor); | |
| 54 | |
| 55 GeneralPath gp = new GeneralPath(shape); | |
| 56 return gp.createTransformedShape(xform); | |
| 57 } | |
| 58 | |
| 59 public static synchronized Shape getScaledShape(int type, float size) { | |
| 60 | |
| 61 Long hash = Long.valueOf( | |
| 62 (((long)type) << 32) | Float.floatToIntBits(size)); | |
| 63 | |
| 64 Shape shape = scaledShapesCache.get(hash); | |
| 65 | |
| 66 if (shape == null) { | |
| 67 switch (type) { | |
| 68 case MEASURED: | |
| 69 shape = MEASURED_SHAPE; | |
| 70 break; | |
| 71 case DIGITIZED: | |
| 72 shape = DIGITIZED_SHAPE; | |
| 73 break; | |
| 74 default: | |
| 75 shape = INTERPOLATED_SHAPE; | |
| 76 } | |
| 77 scaledShapesCache.put(hash, shape = scale(shape, size)); | |
| 78 } | |
| 79 | |
| 80 return shape; | |
| 81 } | |
| 82 } | |
| 83 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |