org.simantics.district.network.ui/src/org/simantics/district/network/ui/adapters/DistrictNetworkEdgeElement.java

   1 package org.simantics.district.network.ui.adapters;
   2
   3 import java.awt.Color;
   4 import java.awt.Shape;
   5 import java.awt.geom.AffineTransform;
   6 import java.awt.geom.Line2D;
   7 import java.awt.geom.Rectangle2D;
   8 import java.util.Collection;
   9 import java.util.Collections;
  10
  11 import org.simantics.district.network.ModelledCRS;
  12 import org.simantics.district.network.ui.DistrictNetworkEdge;
  13 import org.simantics.district.network.ui.nodes.DistrictNetworkEdgeNode;
  14 import org.simantics.g2d.connection.handler.ConnectionHandler;
  15 import org.simantics.g2d.diagram.handler.PickRequest.PickPolicy;
  16 import org.simantics.g2d.diagram.handler.Topology.Connection;
  17 import org.simantics.g2d.element.ElementClass;
  18 import org.simantics.g2d.element.ElementUtils;
  19 import org.simantics.g2d.element.IElement;
  20 import org.simantics.g2d.element.SceneGraphNodeKey;
  21 import org.simantics.g2d.element.handler.InternalSize;
  22 import org.simantics.g2d.element.handler.Outline;
  23 import org.simantics.g2d.element.handler.Pick;
  24 import org.simantics.g2d.element.handler.SceneGraph;
  25 import org.simantics.g2d.element.handler.SelectionOutline;
  26 import org.simantics.g2d.element.handler.impl.ConnectionSelectionOutline;
  27 import org.simantics.g2d.element.handler.impl.DefaultTransform;
  28 import org.simantics.g2d.element.handler.impl.SimpleElementLayers;
  29 import org.simantics.maps.MapScalingTransform;
  30 import org.simantics.scenegraph.g2d.G2DParentNode;
  31 import org.simantics.utils.datastructures.hints.IHintContext.Key;
  32 import org.simantics.utils.datastructures.hints.IHintContext.KeyOf;
  33 import org.slf4j.Logger;
  34 import org.slf4j.LoggerFactory;
  35
  36 public class DistrictNetworkEdgeElement {
  37
  38     public static final Key KEY_DN_EDGE = new KeyOf(DistrictNetworkEdge.class, "DN_EDGE");
  39     public static final Key KEY_DN_EDGE_NODE = new SceneGraphNodeKey(DistrictNetworkEdgeNode.class, "DN_EDGE_NODE");
  40
  41     public static final ElementClass CLASS =
  42             ElementClass.compile(
  43                     DefaultTransform.INSTANCE,
  44                     DNEdgeInternalSize.INSTANCE,
  45                     DNEdgeSceneGraph.INSTANCE,
  46                     DNEdgeConnectionHandler.INSTANCE,
  47                     SimpleElementLayers.INSTANCE,
  48                     // TODO: do we need this and does it work?
  49                     ConnectionSelectionOutline.INSTANCE,
  50                     DistrictNetworkAdditionalColor.INSTANCE
  51             ).setId(DistrictNetworkEdgeElement.class.getSimpleName());
  52
  53     static final class DNEdgeSceneGraph implements SceneGraph {
  54
  55         public static final DNEdgeSceneGraph INSTANCE = new DNEdgeSceneGraph();
  56
  57         private static final long serialVersionUID = 68135568495835923L;
  58
  59         @Override
  60         public void init(IElement edgeElement, G2DParentNode parent) {
  61             DistrictNetworkEdge edge = edgeElement.getHint(KEY_DN_EDGE);
  62             if (edge == null) {
  63                 cleanup(edgeElement);
  64             } else {
  65                 DistrictNetworkEdgeNode node = edgeElement.getHint(KEY_DN_EDGE_NODE);
  66                 if (node == null) {
  67                     node = parent.addNode(ElementUtils.generateNodeId(edgeElement), DistrictNetworkEdgeNode.class);
  68                     edgeElement.setHint(KEY_DN_EDGE_NODE, node);
  69                 }
  70
  71                 node.setColor(ElementUtils.getAdditionalColor(edgeElement, Color.BLUE));
  72
  73                 node.setDNEdge(edge);
  74                 AffineTransform at = ElementUtils.getTransform(edgeElement);
  75                 if (at != null)
  76                     node.setTransform(at);
  77             }
  78         }
  79
  80         @Override
  81         public void cleanup(IElement edge) {
  82             ElementUtils.removePossibleNode(edge, KEY_DN_EDGE_NODE);
  83             edge.removeHint(KEY_DN_EDGE_NODE);
  84         }
  85     }
  86
  87     static final class DNEdgeInternalSize implements InternalSize, Outline, Pick {
  88
  89         private static final Logger LOGGER = LoggerFactory.getLogger(DNEdgeInternalSize.class);
  90
  91         private static final long serialVersionUID = -7346653820911240628L;
  92
  93         public static final DNEdgeInternalSize INSTANCE = new DNEdgeInternalSize();
  94
  95         @Override
  96         public Rectangle2D getBounds(IElement e, Rectangle2D size) {
  97             DistrictNetworkEdge edge = e.getHint(KEY_DN_EDGE);
  98             if (size == null)
  99                 size = new Rectangle2D.Double();
 100             if (edge != null)
 101                 size.setFrame(DistrictNetworkEdgeNode.calculatePath(edge, null).getBounds2D());
 102             else
 103                 LOGGER.debug("Element {} does not have edge!", e);
 104
 105             return size;
 106         }
 107
 108         @Override
 109         public Shape getElementShape(IElement e) {
 110             DistrictNetworkEdge edge = e.getHint(KEY_DN_EDGE);
 111             if (edge != null) {
 112                 return DistrictNetworkEdgeNode.calculatePath(edge, null);
 113             } else {
 114                 return getBounds(e, null);
 115             }
 116         }
 117
 118         private Shape getSelectionShape(IElement e) {
 119             for (SelectionOutline so : e.getElementClass().getItemsByClass(SelectionOutline.class)) {
 120                 Shape shape = so.getSelectionShape(e);
 121                 if (shape != null)
 122                     return shape;
 123             }
 124             // Using on-diagram coordinates because neither connections nor
 125             // edges have a non-identity transform which means that
 126             // coordinates are always absolute. Therefore branch point
 127             // shape also needs to be calculated in absolute coordinates.
 128             Shape shape = ElementUtils.getElementShapeOrBoundsOnDiagram(e);
 129             return shape;
 130         }
 131
 132         @Override
 133         public boolean pickTest(IElement e, Shape s, PickPolicy policy) {
 134             DistrictNetworkEdge edge = e.getHint(KEY_DN_EDGE);
 135             if (edge != null) {
 136                 Rectangle2D bounds = getBounds(s);
 137
 138                 switch (policy) {
 139                 case PICK_CONTAINED_OBJECTS:
 140                     Shape selectionShape = getSelectionShape(e);
 141                     return bounds.contains(selectionShape.getBounds2D());
 142
 143                 case PICK_INTERSECTING_OBJECTS:
 144                     double tolerance = (bounds.getHeight() + bounds.getHeight()) * 0.25 / MapScalingTransform.getScaleX();
 145                     Line2D line = new Line2D.Double(edge.getStartPoint(), edge.getEndPoint());
 146                     double sx = bounds.getCenterX() / MapScalingTransform.getScaleX();
 147                     double sy = bounds.getCenterY() / MapScalingTransform.getScaleY();
 148                     double ssx = ModelledCRS.xToLongitude(sx);
 149                     double ssy = ModelledCRS.yToLatitude(-sy); // Invert for Simantics diagram coordinate system
 150                     double distSq = line.ptSegDistSq(ssx, ssy);
 151 //                    System.out.println("s: " + sx + ", " + sy);
 152 //                    System.out.println("ss: " + ssx + ", " + ssy);
 153 //                    System.out.println("p1: " + edge.getStartPoint());
 154 //                    System.out.println("p2: " + edge.getEndPoint());
 155 //                    System.out.println("line: " + "(" + line.getX1() + ", " + line.getY1() + ", " + line.getX2() + ", " + line.getY2() + ")");
 156 //                    System.out.println("distance from line is " + Math.sqrt(distSq) + " with tolerance " + tolerance);
 157                     if (distSq <= tolerance * tolerance) {
 158                         return true;
 159                     }
 160                 }
 161                 return false;
 162             }
 163
 164             return false;
 165         }
 166
 167         private Rectangle2D getBounds(Shape shape) {
 168             if (shape instanceof Rectangle2D)
 169                 return (Rectangle2D) shape;
 170             return shape.getBounds2D();
 171         }
 172
 173     }
 174
 175     static class DNEdgeConnectionHandler implements ConnectionHandler {
 176
 177         private static final long serialVersionUID = -6882671891381761687L;
 178
 179         public static final DNEdgeConnectionHandler INSTANCE = new DNEdgeConnectionHandler();
 180
 181         @Override
 182         public Collection<IElement> getChildren(IElement connection, Collection<IElement> result) {
 183             return Collections.emptyList();
 184         }
 185
 186         @Override
 187         public Collection<IElement> getBranchPoints(IElement connection, Collection<IElement> result) {
 188             return Collections.emptyList();
 189         }
 190
 191         @Override
 192         public Collection<IElement> getSegments(IElement connection, Collection<IElement> result) {
 193             return Collections.emptyList();
 194         }
 195
 196         @Override
 197         public Collection<Connection> getTerminalConnections(IElement connection, Collection<Connection> result) {
 198             return Collections.emptyList();
 199         }
 200     }
 201
 202 }