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.ArrayList;
   5 import java.util.Collection;
   6 import java.util.List;
   7
   8 import org.simantics.databoard.Bindings;
   9 import org.simantics.db.Resource;
  10 import org.simantics.db.WriteGraph;
  11 import org.simantics.db.common.request.ObjectsWithType;
  12 import org.simantics.db.exception.BindingException;
  13 import org.simantics.db.exception.DatabaseException;
  14 import org.simantics.db.exception.ManyObjectsForFunctionalRelationException;
  15 import org.simantics.db.exception.ServiceException;
  16 import org.simantics.db.layer0.util.Layer0Utils;
  17 import org.simantics.diagram.stubs.DiagramResource;
  18 import org.simantics.diagram.synchronization.IModifiableSynchronizationContext;
  19 import org.simantics.diagram.synchronization.SynchronizationHints;
  20 import org.simantics.diagram.synchronization.graph.GraphSynchronizationHints;
  21 import org.simantics.diagram.synchronization.graph.layer.GraphLayerManager;
  22 import org.simantics.district.network.DistrictNetworkUtil;
  23 import org.simantics.district.network.ontology.DistrictNetworkResource;
  24 import org.simantics.g2d.diagram.IDiagram;
  25 import org.simantics.layer0.Layer0;
  26
  27 public class DNEdgeBuilder {
  28
  29     private Resource diagramResource;
  30     private IDiagram diagram;
  31     private GraphLayerManager glm;
  32
  33     public DNEdgeBuilder(Resource diagramResource, IDiagram diagram) {
  34         this.diagramResource = diagramResource;
  35         this.diagram = diagram;
  36
  37         IModifiableSynchronizationContext context = diagram.getHint(SynchronizationHints.CONTEXT);
  38         glm = context.get(GraphSynchronizationHints.GRAPH_LAYER_MANAGER);
  39     }
  40
  41     public static Resource create(WriteGraph graph, Resource diagramResource, double[] start, double[] end, double padding) throws DatabaseException {
  42         Collection<Resource> vertices = graph.syncRequest(new ObjectsWithType(diagramResource, Layer0.getInstance(graph).ConsistsOf, DistrictNetworkResource.getInstance(graph).Vertex));
  43         List<ResourceVertex> vv = new ArrayList<>(vertices.size());
  44         for (Resource vertex : vertices) {
  45             double[] existingCoords = graph.getRelatedValue2(vertex, DiagramResource.getInstance(graph).HasLocation, Bindings.DOUBLE_ARRAY);
  46             vv.add(new ResourceVertex(vertex, existingCoords));
  47         }
  48         return create(graph, vv, diagramResource, null, start, end, padding, false);
  49     }
  50
  51     public static Resource create(WriteGraph graph, Collection<ResourceVertex> vertices, Resource diagramResource, Resource mapping, double[] start, double[] end, double padding, boolean writeElevationToEdgeFromPoints) throws DatabaseException {
  52
  53         DistrictNetworkResource DN = DistrictNetworkResource.getInstance(graph);
  54
  55         // 1. Get diagram edge to construct
  56         Resource edge = getOrCreateEdge(graph, diagramResource, mapping);
  57
  58         // 2. Add vertices
  59         Resource startVertex = getOrCreateVertex(graph, diagramResource, vertices, start, padding, null);
  60         Resource endVertex = getOrCreateVertex(graph, diagramResource, vertices, end, padding, startVertex);
  61         if (writeElevationToEdgeFromPoints) {
  62             graph.claimLiteral(edge, DN.Edge_HasElevation, calculateElevationFromVertices(graph, startVertex, endVertex), Bindings.DOUBLE);
  63         }
  64
  65         graph.claim(edge, DN.HasStartVertex, startVertex);
  66         graph.claim(edge, DN.HasEndVertex, endVertex);
  67
  68         // We need to put GraphLayer to newLayers so...
  69 //        for (Resource layer : graph.getObjects(diagramResource, DiagramResource.getInstance(graph).HasLayer)) {
  70 //            IGraphLayerUtil layerUtil = graph.adapt(graph.getSingleObject(layer, Layer0.getInstance(graph).InstanceOf), IGraphLayerUtil.class);
  71 //
  72 //            GraphLayer gl = layerUtil.loadLayer(graph, layer);
  73 //            gl.forEachTag(tag -> {
  74 //                DiagramGraphUtil.tag(graph, startVertex, tag, true);
  75 //                DiagramGraphUtil.tag(graph, endVertex, tag, true);
  76 //            });
  77 //        }
  78 //
  79         return edge;
  80     }
  81     private static double calculateElevationFromVertices(WriteGraph graph, Resource startVertex, Resource endVertex) throws ManyObjectsForFunctionalRelationException, BindingException, ServiceException {
  82         DistrictNetworkResource DN = DistrictNetworkResource.getInstance(graph);
  83         Double startElevation = graph.getPossibleRelatedValue(startVertex, DN.Vertex_HasElevation, Bindings.DOUBLE);
  84         Double endElevation = graph.getPossibleRelatedValue(endVertex, DN.Vertex_HasElevation, Bindings.DOUBLE);
  85         if (startElevation != null && endElevation != null) {
  86             return (startElevation + endElevation) / 2;
  87         }
  88         return 0;
  89     }
  90
  91     public void create(WriteGraph graph,  double[] start, double[] end, double padding) throws DatabaseException {
  92
  93         Resource edge = create(graph, diagramResource, start, end, padding);
  94         // 7. Put the element on all the currently active layers if possible.
  95         if (glm != null) {
  96             putOnActiveLayer(graph, edge);
  97         }
  98
  99         Layer0Utils.addCommentMetadata(graph, "Added edge " + edge);
 100         graph.markUndoPoint();
 101     }
 102
 103     private void putOnActiveLayer(WriteGraph graph, Resource res) throws DatabaseException {
 104         glm.removeFromAllLayers(graph, res);
 105         glm.putElementOnVisibleLayers(diagram, graph, res);
 106     }
 107
 108     private static Resource getOrCreateVertex(WriteGraph graph, Resource diagramResource, Collection<ResourceVertex> vertices, double[] coords, double padding, Resource startVertex) throws DatabaseException {
 109         Resource vertex = null;
 110         double halfPadding = padding / 2;
 111         double maxDistance = Double.MAX_VALUE;
 112         for (ResourceVertex vertx : vertices) {
 113             Rectangle2D existing = new Rectangle2D.Double(vertx.coords[0] - halfPadding, vertx.coords[1] - halfPadding, padding, padding);
 114             Rectangle2D tobecreated = new Rectangle2D.Double(coords[0] - halfPadding, coords[1] - halfPadding, padding, padding);
 115             if (existing.intersects(tobecreated)) {
 116                 double dist = Math.sqrt((Math.pow(coords[0] - vertx.coords[0], 2) + (Math.pow(coords[1] - vertx.coords[1], 2))));
 117                 if (dist <= maxDistance && !vertx.vertex.equals(startVertex)) {
 118                     vertex = vertx.vertex;
 119                     maxDistance = dist;
 120                 }
 121             }
 122         }
 123         if (vertex == null) {
 124             vertex = DistrictNetworkUtil.createVertex(graph, diagramResource, coords);
 125             vertices.add(new ResourceVertex(vertex, coords));
 126         }
 127         return vertex;
 128     }
 129
 130     private static Resource getOrCreateEdge(WriteGraph graph, Resource diagramResource, Resource mapping) throws DatabaseException {
 131         return DistrictNetworkUtil.createEdge(graph, diagramResource, mapping);
 132     }
 133
 134     public static class ResourceVertex {
 135
 136         final Resource vertex;
 137         final double[] coords;
 138
 139         public ResourceVertex(Resource vertex, double[] coords) {
 140             this.vertex = vertex;
 141             this.coords = coords;
 142         }
 143     }
 144 }