bundles/org.simantics.g2d/src/org/simantics/g2d/elementclass/connection/Path2DOutlineShape.java

   1 /*******************************************************************************\r
   2  * Copyright (c) 2007, 2010 Association for Decentralized Information Management\r
   3  * in Industry THTH ry.\r
   4  * All rights reserved. This program and the accompanying materials\r
   5  * are made available under the terms of the Eclipse Public License v1.0\r
   6  * which accompanies this distribution, and is available at\r
   7  * http://www.eclipse.org/legal/epl-v10.html\r
   8  *\r
   9  * Contributors:\r
  10  *     VTT Technical Research Centre of Finland - initial API and implementation\r
  11  *******************************************************************************/\r
  12 package org.simantics.g2d.elementclass.connection;\r
  13 \r
  14 import java.awt.Rectangle;\r
  15 import java.awt.Shape;\r
  16 import java.awt.geom.AffineTransform;\r
  17 import java.awt.geom.Path2D;\r
  18 import java.awt.geom.PathIterator;\r
  19 import java.awt.geom.Point2D;\r
  20 import java.awt.geom.Rectangle2D;\r
  21 \r
  22 public class Path2DOutlineShape implements Shape {\r
  23 \r
  24         Path2D path;\r
  25         \r
  26         public Path2DOutlineShape(Path2D path) {\r
  27                 this.path = path;\r
  28         }\r
  29 \r
  30         @Override\r
  31         public boolean contains(Point2D p) {\r
  32                 return false;\r
  33         }\r
  34 \r
  35         @Override\r
  36         public boolean contains(Rectangle2D r) {\r
  37                 return false;\r
  38         }\r
  39 \r
  40         @Override\r
  41         public boolean contains(double x, double y) {           \r
  42                 return false;\r
  43         }\r
  44 \r
  45         @Override\r
  46         public boolean contains(double x, double y, double w, double h) {               \r
  47                 return false;\r
  48         }\r
  49 \r
  50         @Override\r
  51         public Rectangle getBounds() {\r
  52                 return path.getBounds();\r
  53         }\r
  54 \r
  55         @Override\r
  56         public Rectangle2D getBounds2D() {\r
  57                 return path.getBounds2D();\r
  58         }\r
  59 \r
  60         @Override\r
  61         public PathIterator getPathIterator(AffineTransform at) {\r
  62                 return path.getPathIterator(at);\r
  63         }\r
  64 \r
  65         @Override\r
  66         public PathIterator getPathIterator(AffineTransform at, double flatness) {\r
  67                 return path.getPathIterator(at, flatness);\r
  68         }\r
  69 \r
  70         @Override\r
  71         public boolean intersects(Rectangle2D r) {\r
  72                 return intersects(r.getX(), r.getY(), r.getWidth(), r.getHeight());\r
  73         }\r
  74 \r
  75         @Override\r
  76         public boolean intersects(double x, double y, double w, double h) {\r
  77                 PathIterator it = path.getPathIterator(new AffineTransform(), 1.0);\r
  78                 double[] coords = new double[2];\r
  79                 double x0, y0, x1=0.0, y1=0.0;\r
  80                 while(!it.isDone()) {\r
  81                         x0 = x1;\r
  82                         y0 = y1;\r
  83                         switch(it.currentSegment(coords)) {\r
  84                         case PathIterator.SEG_MOVETO:\r
  85                                 x1 = coords[0];\r
  86                                 y1 = coords[1];\r
  87                                 break;\r
  88                                 \r
  89                         case PathIterator.SEG_LINETO:\r
  90                                 x1 = coords[0];\r
  91                                 y1 = coords[1];\r
  92                                 \r
  93                                 // Lines are approximated by their bounding boxes. This works for\r
  94                                 // orthogonal paths.\r
  95                                 if(x0 < x1) {\r
  96                                         if(x > x1 || x+w < x0)\r
  97                                                 break;                                          \r
  98                                 }\r
  99                                 else {\r
 100                                         if(x > x0 || x+w < x1)\r
 101                                                 break;\r
 102                                 }\r
 103 \r
 104                                 if(y0 < y1) {\r
 105                                         if(y > y1 || y+h < y0)\r
 106                                                 break;                                          \r
 107                                 }\r
 108                                 else {\r
 109                                         if(y > y0 || y+h < y1)\r
 110                                                 break;\r
 111                                 }       \r
 112                                 return true;\r
 113                         }                       \r
 114                         it.next();\r
 115                 }\r
 116                 return false;\r
 117         }\r
 118         \r
 119 }\r