org.simantics.district.network.ui/src/org/simantics/district/network/ui/nodes/DistrictNetworkEdgeNode.java

   1 package org.simantics.district.network.ui.nodes;
   2
   3 import java.awt.BasicStroke;
   4 import java.awt.Color;
   5 import java.awt.Graphics2D;
   6 import java.awt.RenderingHints;
   7 import java.awt.geom.AffineTransform;
   8 import java.awt.geom.Line2D;
   9 import java.awt.geom.Path2D;
  10 import java.awt.geom.Point2D;
  11 import java.awt.geom.Rectangle2D;
  12
  13 import org.simantics.district.network.ModelledCRS;
  14 import org.simantics.district.network.ui.DistrictNetworkEdge;
  15 import org.simantics.district.network.ui.adapters.DistrictNetworkEdgeElementFactory;
  16 import org.simantics.scenegraph.INode;
  17 import org.simantics.scenegraph.ISelectionPainterNode;
  18 import org.simantics.scenegraph.g2d.G2DNode;
  19 import org.simantics.scenegraph.g2d.G2DParentNode;
  20 import org.simantics.scenegraph.g2d.G2DRenderingHints;
  21 import org.simantics.scenegraph.g2d.nodes.SVGNode;
  22 import org.simantics.scenegraph.utils.GeometryUtils;
  23 import org.simantics.scenegraph.utils.NodeUtil;
  24
  25 public class DistrictNetworkEdgeNode extends G2DParentNode implements ISelectionPainterNode {
  26
  27     private static final long serialVersionUID = 8049769475036519806L;
  28
  29     private static final BasicStroke STROKE           = new BasicStroke(4, BasicStroke.CAP_ROUND, BasicStroke.JOIN_ROUND);
  30     private static final Color       SELECTION_COLOR  = new Color(255, 0, 255, 96);
  31
  32     private DistrictNetworkEdge edge;
  33     private Rectangle2D bounds;
  34     private transient Path2D path;
  35     private transient Path2D detailedPath;
  36
  37     private transient int zoomLevel = 0;
  38
  39     private static boolean scaleStroke = true;
  40     private Color color;
  41     private Double stroke;
  42     private transient Color dynamicColor = null;
  43
  44     // Dimensions for shut-off valve symbol
  45     private static final double left = -0.25;
  46     private static final double top = -0.25;
  47     private static final double width = 0.5;
  48     private static final double height = 0.5;
  49
  50     private static final Rectangle2D NORMAL = new Rectangle2D.Double(left, top, width, height);
  51
  52     private transient Point2D centerPoint;
  53     private transient Point2D detailedCenterPoint;
  54     private transient Point2D direction;
  55     private transient Point2D detailedDirection;
  56
  57     private transient Rectangle2D symbolRect;
  58     private transient AffineTransform symbolTransform;
  59
  60     private boolean hidden = false;
  61
  62     private Double arrowLength;
  63
  64     private static double startX;
  65     private static double startY;
  66     private static double endX;
  67     private static double endY;
  68
  69     private Path2D arrowPath;
  70
  71     @Override
  72     public void init() {
  73     }
  74
  75     @Override
  76     public void render(Graphics2D g2d) {
  77         AffineTransform ot = null;
  78         AffineTransform t = getTransform();
  79         double scale = scaleStroke ? (Double) g2d.getRenderingHint(DistrictRenderingHints.KEY_VIEW_SCALE_UNDER_SPATIAL_ROOT) : 1.0;
  80         if (t != null && !t.isIdentity()) {
  81             //ot = g2d.getTransform();
  82             ot = (AffineTransform) g2d.getRenderingHint(G2DRenderingHints.KEY_TRANSFORM_UNDER_SPATIAL_ROOT);
  83             if (ot == null)
  84                 ot = g2d.getTransform();
  85             g2d.transform(t);
  86             if (scaleStroke) {
  87                 AffineTransform work = DistrictNetworkNodeUtils.sharedTransform.get();
  88                 work.setTransform(ot);
  89                 work.concatenate(t);
  90                 scale = DistrictNetworkNodeUtils.getScale(work);
  91             }
  92         }
  93
  94         zoomLevel = (Integer) g2d.getRenderingHint(DistrictRenderingHints.KEY_VIEW_ZOOM_LEVEL);
  95
  96         if (!hidden) {
  97             Object aaHint = g2d.getRenderingHint(RenderingHints.KEY_ANTIALIASING);
  98             g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
  99
 100             Color oldColor = g2d.getColor();
 101             BasicStroke oldStroke = (BasicStroke) g2d.getStroke();
 102
 103             BasicStroke bs = null;
 104             if (scaleStroke) {
 105                 bs = GeometryUtils.scaleStroke(STROKE, getStrokeWidth(scale));
 106             } else {
 107                 bs = STROKE;
 108             }
 109
 110             Path2D path = renderDetailed(zoomLevel) ? this.detailedPath : this.path;
 111
 112             if (isSelected()) {
 113                 g2d.setColor(SELECTION_COLOR);
 114                 g2d.setStroke(GeometryUtils.scaleAndOffsetStrokeWidth(bs, 1.f, (float)(2 * STROKE.getLineWidth() / scale)));
 115                 g2d.draw(path);
 116             }
 117
 118             g2d.setColor(dynamicColor != null ? dynamicColor : color);
 119             g2d.setStroke(bs);
 120             g2d.draw(path);
 121
 122             // Draw arrow
 123             if (arrowLength != null) {
 124                 g2d.setColor(Color.BLACK);
 125                 float lw = STROKE.getLineWidth() / (float)scale;
 126                 g2d.setStroke(new BasicStroke(lw, BasicStroke.CAP_BUTT, BasicStroke.JOIN_BEVEL));
 127
 128                 double l = arrowLength;
 129                 double w = 2 * (double) lw * Math.signum(l);
 130                 if (Math.abs(w) > Math.abs(l)) w = l;
 131                 double offset = 2 * (double) lw;
 132
 133                 Point2D centerPoint = getCenterPoint(zoomLevel);
 134                 Point2D direction = getDirection(zoomLevel);
 135                 double centerX = centerPoint.getX(), centerY = centerPoint.getY();
 136                 double deltaX = direction.getX(), deltaY = direction.getY();
 137
 138                 // Ensure the line is always rendered on top of the edge
 139                 // to prevent overlap with static info rendered below it.
 140                 double odx = offset * deltaY;
 141                 double ody = offset * deltaX;
 142                 if (odx < 0) {
 143                     odx = -odx;
 144                     ody = -ody;
 145                 }
 146
 147                 double x0 = centerX - l/2 * deltaX + ody;
 148                 double y0 = centerY - l/2 * deltaY - odx;
 149                 double x1 = centerX + (l/2 - w) * deltaX + ody;
 150                 double y1 = centerY + (l/2 - w) * deltaY - odx;
 151
 152                 g2d.draw(new Line2D.Double(x0, y0, x1, y1));
 153
 154                 arrowPath = new Path2D.Double();
 155                 arrowPath.moveTo(x1 + w * deltaX, y1 + w * deltaY);
 156                 arrowPath.lineTo(x1 + w * deltaY, y1 - w * deltaX);
 157                 arrowPath.lineTo(x1 - w * deltaY, y1 + w * deltaX);
 158                 arrowPath.closePath();
 159                 g2d.fill(arrowPath);
 160             }
 161
 162             // Reset
 163             g2d.setStroke(oldStroke);
 164             g2d.setColor(oldColor);
 165             g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, aaHint);
 166         }
 167
 168         Point2D centerP = getCenterPoint(zoomLevel);
 169         for (INode nn : getNodes()) {
 170             G2DNode g2dNode = (G2DNode) nn;
 171             if (g2dNode instanceof SVGNode) {
 172                 // If the node is hidden from the start, then the center point cannot be calculated yet.
 173                 if (!isDefined(centerP))
 174                     break;
 175
 176                 // Render SVG symbol
 177                 double viewScaleRecip = scaleStroke ? 10 / scale : 10;
 178                 symbolRect = DistrictNetworkNodeUtils.calculateDrawnGeometry(centerP, NORMAL, symbolRect, viewScaleRecip);
 179                 symbolTransform = DistrictNetworkNodeUtils.getTransformToRectangle(symbolRect, symbolTransform);
 180                 g2dNode.setTransform(symbolTransform);
 181             }
 182             g2dNode.render(g2d);
 183         }
 184
 185         if (ot != null)
 186             g2d.setTransform(ot);
 187     }
 188
 189     static boolean isDefined(Point2D p) {
 190         return p != null && !(Double.isNaN(p.getX()) || Double.isNaN(p.getY()));
 191     }
 192
 193     boolean renderDetailed(int zoomLevel) {
 194         return zoomLevel > 13;
 195     }
 196
 197     public float getStrokeWidth(AffineTransform tr, boolean selection) {
 198         double scale = DistrictNetworkNodeUtils.getScale(tr);
 199         float width = STROKE.getLineWidth() * getStrokeWidth(scale);
 200         if (selection) width = width + (float) (2 * STROKE.getLineWidth() / scale);
 201         return width;
 202     }
 203
 204     private float getStrokeWidth(double scale) {
 205         if (scaleStroke) {
 206             double str = stroke != null ? Math.abs(stroke) : 1.0;
 207             float strokeWidth = (float) (str / scale);
 208             return strokeWidth;
 209         }
 210         else {
 211             return 1.f;
 212         }
 213     }
 214
 215     public Path2D getPath() {
 216         return renderDetailed(zoomLevel) ? detailedPath : path;
 217     }
 218
 219     public Point2D getCenterPoint(int zoomLevel) {
 220         return renderDetailed(zoomLevel) ? detailedCenterPoint : centerPoint;
 221     }
 222
 223     public Point2D getDirection(int zoomLevel) {
 224         return renderDetailed(zoomLevel) ? detailedDirection : direction;
 225     }
 226
 227     public static Path2D calculatePath(DistrictNetworkEdge edge, Path2D result, boolean detailed) {
 228         startX = ModelledCRS.longitudeToX(edge.getStartPoint().getX());
 229         startY = ModelledCRS.latitudeToY(-edge.getStartPoint().getY());
 230         endX = ModelledCRS.longitudeToX(edge.getEndPoint().getX());
 231         endY = ModelledCRS.latitudeToY(-edge.getEndPoint().getY());
 232
 233         if (result == null) {
 234              result = new Path2D.Double();
 235         } else {
 236              result.reset();
 237         }
 238         result.moveTo(startX, startY);
 239         if (detailed) {
 240             double[] detailedGeometry = edge.getGeometry();
 241             if (detailedGeometry != null && !DistrictNetworkEdgeElementFactory.EMPTY.equals(detailedGeometry)) {
 242                 // ok, lets do this
 243                 for (int i = 0; i < detailedGeometry.length; i += 2) {
 244                     double x = ModelledCRS.longitudeToX(detailedGeometry[i]);
 245                     double y = ModelledCRS.latitudeToY(-detailedGeometry[i+1]);// Invert for Simantics
 246                     result.lineTo(x, y);
 247                 }
 248             }
 249         }
 250         result.lineTo(endX, endY);
 251         return result;
 252     }
 253
 254     private boolean isSelected() {
 255         return NodeUtil.isSelected(this, 1);
 256     }
 257
 258     @Override
 259     public Rectangle2D getBoundsInLocal() {
 260         return bounds;
 261     }
 262
 263     private void updateBounds() {
 264         Rectangle2D oldBounds = bounds;
 265         if (oldBounds == null)
 266             oldBounds = new Rectangle2D.Double();
 267         bounds = calculateBounds(oldBounds);
 268     }
 269
 270     /**
 271      * Calculates conservative bounds of the node provided by
 272      * <code>detailedPath</code>. These might be larger than the simplified bounds
 273      * of <code>path</code> but the conservative bounds ensure that spatial
 274      * optimizations work properly.
 275      */
 276     private Rectangle2D calculateBounds(Rectangle2D rect) {
 277         if (detailedPath == null)
 278             detailedPath = calculatePath(edge, detailedPath, true);
 279         return detailedPath.getBounds2D();
 280     }
 281
 282     public void setDNEdge(DistrictNetworkEdge edge) {
 283         this.edge = edge;
 284         path = calculatePath(edge, path, false);
 285         detailedPath = calculatePath(edge, detailedPath, true);
 286
 287         centerPoint = new Point2D.Double();
 288         detailedCenterPoint = new Point2D.Double();
 289         direction = new Point2D.Double();
 290         detailedDirection = new Point2D.Double();
 291
 292         DistrictNetworkNodeUtils.calculateCenterPointAndDirection(path, centerPoint, direction);
 293         DistrictNetworkNodeUtils.calculateCenterPointAndDirection(detailedPath, detailedCenterPoint, detailedDirection);
 294
 295         updateBounds();
 296     }
 297
 298     public void setColor(Color color) {
 299         this.color = color;
 300     }
 301
 302     public Color getColor() {
 303         return color;
 304     }
 305
 306     @PropertySetter(value = "stroke")
 307     public void setStroke(Double stroke) {
 308         this.stroke = stroke;
 309     }
 310
 311     @PropertySetter(value = "dynamicColor")
 312     public void setDynamicColor(Color color) {
 313         this.dynamicColor = color;
 314     }
 315
 316     @PropertySetter(value = "arrowLength")
 317     public void setArrowLength(Double length) {
 318         arrowLength = length;
 319     }
 320
 321     @PropertySetter(value = "SVG")
 322     public void setSVG(String value) {
 323         for (INode nn : this.getNodes())
 324             if (nn instanceof SVGNode)
 325                 ((SVGNode)nn).setData(value);
 326     }
 327
 328     @PropertySetter(value = "hidden")
 329     public void setHidden(Boolean value) {
 330         this.hidden = value;
 331     }
 332
 333 }