org.simantics.proconf.g3d/src/org/simantics/proconf/g3d/base/GeometryProviderRegistry.java

   1 /*******************************************************************************\r
   2  * Copyright (c) 2007 VTT Technical Research Centre of Finland and others.\r
   3  * All rights reserved. This program and the accompanying materials\r
   4  * are made available under the terms of the Eclipse Public License v1.0\r
   5  * which accompanies this distribution, and is available at\r
   6  * http://www.eclipse.org/legal/epl-v10.html\r
   7  *\r
   8  * Contributors:\r
   9  *     VTT Technical Research Centre of Finland - initial API and implementation\r
  10  *******************************************************************************/\r
  11 package org.simantics.proconf.g3d.base;\r
  12 \r
  13 import java.util.Collection;\r
  14 import java.util.HashMap;\r
  15 import java.util.Map;\r
  16 \r
  17 import org.simantics.db.Resource;\r
  18 import org.simantics.layer0.utils.IEntity;\r
  19 import org.simantics.utils.ui.plugin.Extension;\r
  20 import org.simantics.utils.ui.plugin.ExtensionLoader;\r
  21 \r
  22 import com.jme.scene.Geometry;\r
  23 \r
  24 public class GeometryProviderRegistry {\r
  25     private static GeometryProviderRegistry instance;\r
  26     public final static String ELEMENT_NAME = "Geometry";\r
  27     public final static String NAME_SPACE = "org.simantics.proconf.g3d";\r
  28     public final static String EP_NAME = "geometry";\r
  29     \r
  30     private ExtensionLoader<GeometryProvider> loader;\r
  31     private Map<Resource,GeometryProvider> providers;\r
  32     \r
  33     private GeometryProviderRegistry() {\r
  34         loader = new ExtensionLoader<GeometryProvider>(ELEMENT_NAME, NAME_SPACE, EP_NAME);\r
  35         providers = new HashMap<Resource,GeometryProvider>();\r
  36     }\r
  37     \r
  38     public static GeometryProviderRegistry getInstance() {\r
  39         if (instance==null) instance = new GeometryProviderRegistry();\r
  40         return instance;\r
  41     }\r
  42 \r
  43     public Extension<GeometryProvider>[] getExtensions() {\r
  44         return loader.getExtensions();\r
  45     }\r
  46     \r
  47     private Map<Resource,GeometryProvider> getProviderMap() {\r
  48         return providers;\r
  49     }\r
  50     \r
  51     public static Geometry[] getGeometry(IEntity thing, boolean transform) {\r
  52         GeometryProvider provider = getGeometryProvider(thing);\r
  53         return provider.getGeometryFromResource(thing, transform);\r
  54     }\r
  55     \r
  56     public static GeometryProvider getGeometryProvider(IEntity thing) {\r
  57         Collection<IEntity> types = thing.getRelatedObjects(thing.getGraph().getBuiltins().InstanceOf);\r
  58         \r
  59         //Resource types[] = OntologyUtils.getTypes(resource);\r
  60         for (IEntity t : types) {\r
  61                 GeometryProvider provider = getInstance().getProviderMap().get(t.getResource());\r
  62                 if (provider == null) {\r
  63                 for (Extension<GeometryProvider> e : getInstance().getExtensions()) {\r
  64                     if (e.getInstance().canHandle(thing)) {\r
  65                         getInstance().getProviderMap().put(t.getResource(), e.getInstance());\r
  66                         return e.getInstance();\r
  67                     }\r
  68                 }\r
  69                 \r
  70             } else {\r
  71                 return provider;\r
  72             }\r
  73         }\r
  74         \r
  75         throw new UnsupportedOperationException("Cannot handle resource " + thing);\r
  76     }\r
  77 }\r