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
  41         DistrictNetworkResource DN = DistrictNetworkResource.getInstance(graph);
  42
  43         // 1. Get diagram edge to construct
  44         Resource edge = getOrCreateEdge(graph, diagramResource);
  45
  46         // 2. Add vertices
  47         Collection<Resource> vertices = graph.syncRequest(new ObjectsWithType(diagramResource, Layer0.getInstance(graph).ConsistsOf, DistrictNetworkResource.getInstance(graph).Vertex));
  48         Resource startVertex = getOrCreateVertex(graph, diagramResource, vertices, start, padding);
  49         Resource endVertex = getOrCreateVertex(graph, diagramResource, vertices, end, padding);
  50
  51         graph.claim(edge, DN.HasStartVertex, startVertex);
  52         graph.claim(edge, DN.HasEndVertex, endVertex);
  53
  54         // We need to put GraphLayer to newLayers so...
  55         for (Resource layer : graph.getObjects(diagramResource, DiagramResource.getInstance(graph).HasLayer)) {
  56             IGraphLayerUtil layerUtil = graph.adapt(graph.getSingleObject(layer, Layer0.getInstance(graph).InstanceOf), IGraphLayerUtil.class);
  57
  58             GraphLayer gl = layerUtil.loadLayer(graph, layer);
  59             gl.forEachTag(tag -> {
  60                 DiagramGraphUtil.tag(graph, startVertex, tag, true);
  61                 DiagramGraphUtil.tag(graph, endVertex, tag, true);
  62             });
  63         }
  64
  65         return edge;
  66     }
  67     public void create(WriteGraph graph,  double[] start, double[] end, double padding) throws DatabaseException {
  68
  69         Resource edge = create(graph, diagramResource, start, end, padding);
  70         // 7. Put the element on all the currently active layers if possible.
  71         if (glm != null) {
  72             putOnActiveLayer(graph, edge);
  73         }
  74
  75         Layer0Utils.addCommentMetadata(graph, "Added edge " + edge);
  76         graph.markUndoPoint();
  77     }
  78
  79     private void putOnActiveLayer(WriteGraph graph, Resource res) throws DatabaseException {
  80         glm.removeFromAllLayers(graph, res);
  81         glm.putElementOnVisibleLayers(diagram, graph, res);
  82     }
  83
  84     private static Resource getOrCreateVertex(WriteGraph graph, Resource diagramResource, Collection<Resource> vertices, double[] coords, double padding) throws DatabaseException {
  85         Resource vertex = null;
  86         double halfPadding = padding / 2;
  87         double maxDistance = Double.MAX_VALUE;
  88         for (Resource vertx : vertices) {
  89             double[] existingCoords = graph.getRelatedValue2(vertx, DiagramResource.getInstance(graph).HasLocation, Bindings.DOUBLE_ARRAY);
  90             Rectangle2D existing = new Rectangle2D.Double(existingCoords[0] - halfPadding, existingCoords[1] - halfPadding, padding, padding);
  91             Rectangle2D tobecreated = new Rectangle2D.Double(coords[0] - halfPadding, coords[1] - halfPadding, padding, padding);
  92             if (existing.intersects(tobecreated)) {
  93                 double dist = Math.sqrt((Math.pow(coords[0] - existingCoords[0], 2) + (Math.pow(coords[1] - existingCoords[1], 2))));
  94                 if (dist <= maxDistance) {
  95                     vertex = vertx;
  96                 }
  97             }
  98         }
  99         if (vertex == null) {
 100             vertex = DistrictNetworkUtil.createVertex(graph, diagramResource, coords);
 101         }
 102         return vertex;
 103     }
 104
 105     private static Resource getOrCreateEdge(WriteGraph graph, Resource diagramResource) throws DatabaseException {
 106         return DistrictNetworkUtil.createEdge(graph, diagramResource);
 107     }
 108
 109 }