org.simantics.district.network.ui/src/org/simantics/district/network/ui/DNEdgeBuilder.java

   1 package org.simantics.district.network.ui;
   2
   3 import java.awt.geom.Rectangle2D;
   4 import java.util.Collection;
   5
   6 import org.simantics.databoard.Bindings;
   7 import org.simantics.db.Resource;
   8 import org.simantics.db.WriteGraph;
   9 import org.simantics.db.common.request.ObjectsWithType;
  10 import org.simantics.db.exception.DatabaseException;
  11 import org.simantics.db.layer0.util.Layer0Utils;
  12 import org.simantics.diagram.stubs.DiagramResource;
  13 import org.simantics.diagram.synchronization.IModifiableSynchronizationContext;
  14 import org.simantics.diagram.synchronization.SynchronizationHints;
  15 import org.simantics.diagram.synchronization.graph.DiagramGraphUtil;
  16 import org.simantics.diagram.synchronization.graph.GraphSynchronizationHints;
  17 import org.simantics.diagram.synchronization.graph.layer.GraphLayer;
  18 import org.simantics.diagram.synchronization.graph.layer.GraphLayerManager;
  19 import org.simantics.diagram.synchronization.graph.layer.IGraphLayerUtil;
  20 import org.simantics.district.network.DistrictNetworkUtil;
  21 import org.simantics.district.network.ontology.DistrictNetworkResource;
  22 import org.simantics.g2d.diagram.IDiagram;
  23 import org.simantics.layer0.Layer0;
  24
  25 public class DNEdgeBuilder {
  26
  27     private Resource diagramResource;
  28     private IDiagram diagram;
  29     private GraphLayerManager glm;
  30
  31     public DNEdgeBuilder(Resource diagramResource, IDiagram diagram) {
  32         this.diagramResource = diagramResource;
  33         this.diagram = diagram;
  34
  35         IModifiableSynchronizationContext context = diagram.getHint(SynchronizationHints.CONTEXT);
  36         glm = context.get(GraphSynchronizationHints.GRAPH_LAYER_MANAGER);
  37     }
  38
  39     public static Resource create(WriteGraph graph, Resource diagramResource, double[] start, double[] end, double padding) throws DatabaseException {
  40         return create(graph, diagramResource, null, start, end, padding);
  41     }
  42
  43     public static Resource create(WriteGraph graph, Resource diagramResource, Resource mapping, double[] start, double[] end, double padding) throws DatabaseException {
  44
  45         DistrictNetworkResource DN = DistrictNetworkResource.getInstance(graph);
  46
  47         // 1. Get diagram edge to construct
  48         Resource edge = getOrCreateEdge(graph, diagramResource, mapping);
  49
  50         // 2. Add vertices
  51         Collection<Resource> vertices = graph.syncRequest(new ObjectsWithType(diagramResource, Layer0.getInstance(graph).ConsistsOf, DistrictNetworkResource.getInstance(graph).Vertex));
  52         Resource startVertex = getOrCreateVertex(graph, diagramResource, vertices, start, padding);
  53         Resource endVertex = getOrCreateVertex(graph, diagramResource, vertices, end, padding);
  54
  55         graph.claim(edge, DN.HasStartVertex, startVertex);
  56         graph.claim(edge, DN.HasEndVertex, endVertex);
  57
  58         // We need to put GraphLayer to newLayers so...
  59         for (Resource layer : graph.getObjects(diagramResource, DiagramResource.getInstance(graph).HasLayer)) {
  60             IGraphLayerUtil layerUtil = graph.adapt(graph.getSingleObject(layer, Layer0.getInstance(graph).InstanceOf), IGraphLayerUtil.class);
  61
  62             GraphLayer gl = layerUtil.loadLayer(graph, layer);
  63             gl.forEachTag(tag -> {
  64                 DiagramGraphUtil.tag(graph, startVertex, tag, true);
  65                 DiagramGraphUtil.tag(graph, endVertex, tag, true);
  66             });
  67         }
  68
  69         return edge;
  70     }
  71     public void create(WriteGraph graph,  double[] start, double[] end, double padding) throws DatabaseException {
  72
  73         Resource edge = create(graph, diagramResource, start, end, padding);
  74         // 7. Put the element on all the currently active layers if possible.
  75         if (glm != null) {
  76             putOnActiveLayer(graph, edge);
  77         }
  78
  79         Layer0Utils.addCommentMetadata(graph, "Added edge " + edge);
  80         graph.markUndoPoint();
  81     }
  82
  83     private void putOnActiveLayer(WriteGraph graph, Resource res) throws DatabaseException {
  84         glm.removeFromAllLayers(graph, res);
  85         glm.putElementOnVisibleLayers(diagram, graph, res);
  86     }
  87
  88     private static Resource getOrCreateVertex(WriteGraph graph, Resource diagramResource, Collection<Resource> vertices, double[] coords, double padding) throws DatabaseException {
  89         Resource vertex = null;
  90         double halfPadding = padding / 2;
  91         double maxDistance = Double.MAX_VALUE;
  92         for (Resource vertx : vertices) {
  93             double[] existingCoords = graph.getRelatedValue2(vertx, DiagramResource.getInstance(graph).HasLocation, Bindings.DOUBLE_ARRAY);
  94             Rectangle2D existing = new Rectangle2D.Double(existingCoords[0] - halfPadding, existingCoords[1] - halfPadding, padding, padding);
  95             Rectangle2D tobecreated = new Rectangle2D.Double(coords[0] - halfPadding, coords[1] - halfPadding, padding, padding);
  96             if (existing.intersects(tobecreated)) {
  97                 double dist = Math.sqrt((Math.pow(coords[0] - existingCoords[0], 2) + (Math.pow(coords[1] - existingCoords[1], 2))));
  98                 if (dist <= maxDistance) {
  99                     vertex = vertx;
 100                 }
 101             }
 102         }
 103         if (vertex == null) {
 104             vertex = DistrictNetworkUtil.createVertex(graph, diagramResource, coords);
 105         }
 106         return vertex;
 107     }
 108
 109     private static Resource getOrCreateEdge(WriteGraph graph, Resource diagramResource, Resource mapping) throws DatabaseException {
 110         return DistrictNetworkUtil.createEdge(graph, diagramResource, mapping);
 111     }
 112
 113 }