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.Point2D;
   8 import java.awt.geom.Rectangle2D;
   9 import java.util.Collection;
  10 import java.util.Collections;
  11
  12 import org.simantics.district.network.ModelledCRS;
  13 import org.simantics.district.network.ui.DistrictNetworkEdge;
  14 import org.simantics.district.network.ui.nodes.DistrictNetworkEdgeNode;
  15 import org.simantics.g2d.connection.handler.ConnectionHandler;
  16 import org.simantics.g2d.diagram.handler.PickRequest.PickPolicy;
  17 import org.simantics.g2d.diagram.handler.Topology.Connection;
  18 import org.simantics.g2d.element.ElementClass;
  19 import org.simantics.g2d.element.ElementUtils;
  20 import org.simantics.g2d.element.IElement;
  21 import org.simantics.g2d.element.SceneGraphNodeKey;
  22 import org.simantics.g2d.element.handler.InternalSize;
  23 import org.simantics.g2d.element.handler.Outline;
  24 import org.simantics.g2d.element.handler.Pick;
  25 import org.simantics.g2d.element.handler.SceneGraph;
  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.scenegraph.g2d.nodes.SVGNode;
  32 import org.simantics.utils.datastructures.hints.IHintContext.Key;
  33 import org.simantics.utils.datastructures.hints.IHintContext.KeyOf;
  34 import org.slf4j.Logger;
  35 import org.slf4j.LoggerFactory;
  36
  37 public class DistrictNetworkEdgeElement {
  38
  39     public static final Key KEY_DN_EDGE = new KeyOf(DistrictNetworkEdge.class, "DN_EDGE");
  40     public static final Key KEY_DN_EDGE_NODE = new SceneGraphNodeKey(DistrictNetworkEdgeNode.class, "DN_EDGE_NODE");
  41     public static final Key KEY_DN_EDGE_SYMBOL_NODE = new SceneGraphNodeKey(DistrictNetworkEdgeNode.class, "DN_EDGE_SYMBOL_NODE");
  42
  43     public static final ElementClass CLASS =
  44             ElementClass.compile(
  45                     DefaultTransform.INSTANCE,
  46                     DNEdgeInternalSize.INSTANCE,
  47                     DNEdgeSceneGraph.INSTANCE,
  48                     DNEdgeConnectionHandler.INSTANCE,
  49                     SimpleElementLayers.INSTANCE,
  50                     // TODO: do we need this and does it work?
  51                     ConnectionSelectionOutline.INSTANCE,
  52                     DistrictNetworkAdditionalColor.INSTANCE
  53             ).setId(DistrictNetworkEdgeElement.class.getSimpleName());
  54
  55     static final class DNEdgeSceneGraph implements SceneGraph {
  56
  57         public static final DNEdgeSceneGraph INSTANCE = new DNEdgeSceneGraph();
  58
  59         private static final long serialVersionUID = 68135568495835923L;
  60
  61         @Override
  62         public void init(IElement edgeElement, G2DParentNode parent) {
  63             DistrictNetworkEdge edge = edgeElement.getHint(KEY_DN_EDGE);
  64             if (edge == null) {
  65                 cleanup(edgeElement);
  66             } else {
  67                 DistrictNetworkEdgeNode node = edgeElement.getHint(KEY_DN_EDGE_NODE);
  68                 if (node == null) {
  69                     node = parent.addNode(ElementUtils.generateNodeId(edgeElement), DistrictNetworkEdgeNode.class);
  70                     edgeElement.setHint(KEY_DN_EDGE_NODE, node);
  71
  72                     SVGNode symbol = node.addNode(ElementUtils.generateNodeId(edgeElement), SVGNode.class);
  73                     edgeElement.setHint(KEY_DN_EDGE_SYMBOL_NODE, symbol);
  74                 }
  75
  76                 node.setColor(ElementUtils.getAdditionalColor(edgeElement, Color.BLUE));
  77
  78                 node.setDNEdge(edge);
  79                 AffineTransform at = ElementUtils.getTransform(edgeElement);
  80                 if (at != null)
  81                     node.setTransform(at);
  82             }
  83         }
  84
  85         @Override
  86         public void cleanup(IElement edge) {
  87             ElementUtils.removePossibleNode(edge, KEY_DN_EDGE_SYMBOL_NODE);
  88             ElementUtils.removePossibleNode(edge, KEY_DN_EDGE_NODE);
  89             edge.removeHint(KEY_DN_EDGE_NODE);
  90             edge.removeHint(KEY_DN_EDGE_SYMBOL_NODE);
  91         }
  92     }
  93
  94     static final class DNEdgeInternalSize implements InternalSize, Outline, Pick {
  95
  96         private static final Logger LOGGER = LoggerFactory.getLogger(DNEdgeInternalSize.class);
  97
  98         private static final long serialVersionUID = -7346653820911240628L;
  99
 100         public static final DNEdgeInternalSize INSTANCE = new DNEdgeInternalSize();
 101
 102         @Override
 103         public Rectangle2D getBounds(IElement e, Rectangle2D size) {
 104             DistrictNetworkEdge edge = e.getHint(KEY_DN_EDGE);
 105             if (size == null)
 106                 size = new Rectangle2D.Double();
 107             if (edge != null)
 108                 size.setFrame(DistrictNetworkEdgeNode.calculatePath(edge, null, false).getBounds2D());
 109             else
 110                 LOGGER.debug("Element {} does not have edge!", e);
 111
 112             return size;
 113         }
 114
 115         @Override
 116         public Shape getElementShape(IElement e) {
 117             DistrictNetworkEdge edge = e.getHint(KEY_DN_EDGE);
 118             if (edge != null) {
 119                 return DistrictNetworkEdgeNode.calculatePath(edge, null, false);
 120             } else {
 121                 return getBounds(e, null);
 122             }
 123         }
 124
 125         @Override
 126         public boolean pickTest(IElement e, Shape s, PickPolicy policy) {
 127             DistrictNetworkEdge edge = e.getHint(KEY_DN_EDGE);
 128             if (edge != null) {
 129                 Rectangle2D bounds = getBounds(s);
 130                 switch (policy) {
 131                 case PICK_CONTAINED_OBJECTS:    return pickContainedObjects(edge, bounds);
 132                 case PICK_INTERSECTING_OBJECTS: return pickIntersectingObjects(edge, bounds);
 133                 }
 134                 return false;
 135             }
 136
 137             return false;
 138         }
 139
 140         private boolean pickContainedObjects(DistrictNetworkEdge edge, Rectangle2D bounds) {
 141             double bminx = bounds.getMinX() / MapScalingTransform.getScaleX();
 142             double bminy = bounds.getMinY() / MapScalingTransform.getScaleY();
 143             double bmaxx = bounds.getMaxX() / MapScalingTransform.getScaleX();
 144             double bmaxy = bounds.getMaxY() / MapScalingTransform.getScaleY();
 145
 146             double bsminx = ModelledCRS.xToLongitude(bminx);
 147             double bsminy = ModelledCRS.yToLatitude(-bminy); // Invert for Simantics diagram coordinate system
 148             double bsmaxx = ModelledCRS.xToLongitude(bmaxx);
 149             double bsmaxy = ModelledCRS.yToLatitude(-bmaxy); // Invert for Simantics diagram coordinate system
 150
 151             double boundsMinY = Math.min(bsminy, bsmaxy);
 152             double boundsMaxY = Math.max(bsminy, bsmaxy);
 153
 154             Point2D start = edge.getStartPoint();
 155             Point2D end = edge.getEndPoint();
 156
 157             double eminx = Math.min(start.getX(), end.getX());
 158             double eminy = Math.min(start.getY(), end.getY());
 159             double emaxx = Math.max(start.getX(), end.getX());
 160             double emaxy = Math.max(start.getY(), end.getY());
 161
 162             return eminx >= bsminx && eminy >= boundsMinY && emaxx <= bsmaxx && emaxy <= boundsMaxY;
 163         }
 164
 165         private boolean pickIntersectingObjects(DistrictNetworkEdge edge, Rectangle2D bounds) {
 166             double tolerance = (bounds.getHeight() + bounds.getHeight()) * 1 / MapScalingTransform.getScaleX();
 167             Line2D line = new Line2D.Double(edge.getStartPoint(), edge.getEndPoint());
 168             double sx = bounds.getCenterX() / MapScalingTransform.getScaleX();
 169             double sy = bounds.getCenterY() / MapScalingTransform.getScaleY();
 170             double ssx = ModelledCRS.xToLongitude(sx);
 171             double ssy = ModelledCRS.yToLatitude(-sy); // Invert for Simantics diagram coordinate system
 172             double distSq = line.ptSegDistSq(ssx, ssy);
 173 //            System.out.println("s: " + sx + ", " + sy);
 174 //            System.out.println("ss: " + ssx + ", " + ssy);
 175 //            System.out.println("p1: " + edge.getStartPoint());
 176 //            System.out.println("p2: " + edge.getEndPoint());
 177 //            System.out.println("line: " + "(" + line.getX1() + ", " + line.getY1() + ", " + line.getX2() + ", " + line.getY2() + ")");
 178 //            System.out.println("distance from line is " + Math.sqrt(distSq) + " with tolerance " + tolerance);
 179             return distSq <= tolerance * tolerance;
 180         }
 181
 182         private Rectangle2D getBounds(Shape shape) {
 183             if (shape instanceof Rectangle2D)
 184                 return (Rectangle2D) shape;
 185             return shape.getBounds2D();
 186         }
 187
 188     }
 189
 190     static class DNEdgeConnectionHandler implements ConnectionHandler {
 191
 192         private static final long serialVersionUID = -6882671891381761687L;
 193
 194         public static final DNEdgeConnectionHandler INSTANCE = new DNEdgeConnectionHandler();
 195
 196         @Override
 197         public Collection<IElement> getChildren(IElement connection, Collection<IElement> result) {
 198             return Collections.emptyList();
 199         }
 200
 201         @Override
 202         public Collection<IElement> getBranchPoints(IElement connection, Collection<IElement> result) {
 203             return Collections.emptyList();
 204         }
 205
 206         @Override
 207         public Collection<IElement> getSegments(IElement connection, Collection<IElement> result) {
 208             return Collections.emptyList();
 209         }
 210
 211         @Override
 212         public Collection<Connection> getTerminalConnections(IElement connection, Collection<Connection> result) {
 213             return Collections.emptyList();
 214         }
 215     }
 216
 217 }