001/* License: GPL. For details, see LICENSE file. */ 002package org.openstreetmap.josm.data.osm.visitor.paint; 003 004import java.awt.BasicStroke; 005import java.awt.Color; 006import java.awt.Graphics2D; 007import java.awt.Point; 008import java.awt.Polygon; 009import java.awt.Rectangle; 010import java.awt.RenderingHints; 011import java.awt.Stroke; 012import java.awt.geom.GeneralPath; 013import java.util.ArrayList; 014import java.util.Iterator; 015import java.util.List; 016 017import org.openstreetmap.josm.Main; 018import org.openstreetmap.josm.data.Bounds; 019import org.openstreetmap.josm.data.osm.BBox; 020import org.openstreetmap.josm.data.osm.Changeset; 021import org.openstreetmap.josm.data.osm.DataSet; 022import org.openstreetmap.josm.data.osm.Node; 023import org.openstreetmap.josm.data.osm.OsmPrimitive; 024import org.openstreetmap.josm.data.osm.Relation; 025import org.openstreetmap.josm.data.osm.RelationMember; 026import org.openstreetmap.josm.data.osm.Way; 027import org.openstreetmap.josm.data.osm.WaySegment; 028import org.openstreetmap.josm.data.osm.visitor.Visitor; 029import org.openstreetmap.josm.gui.NavigatableComponent; 030 031/** 032 * A map renderer that paints a simple scheme of every primitive it visits to a 033 * previous set graphic environment. 034 */ 035public class WireframeMapRenderer extends AbstractMapRenderer implements Visitor { 036 037 /** Color Preference for ways not matching any other group */ 038 protected Color dfltWayColor; 039 /** Color Preference for relations */ 040 protected Color relationColor; 041 /** Color Preference for untagged ways */ 042 protected Color untaggedWayColor; 043 /** Color Preference for tagged nodes */ 044 protected Color taggedColor; 045 /** Color Preference for multiply connected nodes */ 046 protected Color connectionColor; 047 /** Color Preference for tagged and multiply connected nodes */ 048 protected Color taggedConnectionColor; 049 /** Preference: should directional arrows be displayed */ 050 protected boolean showDirectionArrow; 051 /** Preference: should arrows for oneways be displayed */ 052 protected boolean showOnewayArrow; 053 /** Preference: should only the last arrow of a way be displayed */ 054 protected boolean showHeadArrowOnly; 055 /** Preference: should the segement numbers of ways be displayed */ 056 protected boolean showOrderNumber; 057 /** Preference: should selected nodes be filled */ 058 protected boolean fillSelectedNode; 059 /** Preference: should unselected nodes be filled */ 060 protected boolean fillUnselectedNode; 061 /** Preference: should tagged nodes be filled */ 062 protected boolean fillTaggedNode; 063 /** Preference: should multiply connected nodes be filled */ 064 protected boolean fillConnectionNode; 065 /** Preference: size of selected nodes */ 066 protected int selectedNodeSize; 067 /** Preference: size of unselected nodes */ 068 protected int unselectedNodeSize; 069 /** Preference: size of multiply connected nodes */ 070 protected int connectionNodeSize; 071 /** Preference: size of tagged nodes */ 072 protected int taggedNodeSize; 073 074 /** Color cache to draw subsequent segments of same color as one <code>Path</code>. */ 075 protected Color currentColor = null; 076 /** Path store to draw subsequent segments of same color as one <code>Path</code>. */ 077 protected GeneralPath currentPath = new GeneralPath(); 078 /** 079 * <code>DataSet</code> passed to the @{link render} function to overcome the argument 080 * limitations of @{link Visitor} interface. Only valid until end of rendering call. 081 */ 082 private DataSet ds; 083 084 /** Helper variable for {@link #drawSegment} */ 085 private static final double PHI = Math.toRadians(20); 086 /** Helper variable for {@link #drawSegment} */ 087 private static final double cosPHI = Math.cos(PHI); 088 /** Helper variable for {@link #drawSegment} */ 089 private static final double sinPHI = Math.sin(PHI); 090 091 /** Helper variable for {@link #visit(Relation)} */ 092 private Stroke relatedWayStroke = new BasicStroke( 093 4, BasicStroke.CAP_SQUARE, BasicStroke.JOIN_BEVEL); 094 095 /** 096 * Creates an wireframe render 097 * 098 * @param g the graphics context. Must not be null. 099 * @param nc the map viewport. Must not be null. 100 * @param isInactiveMode if true, the paint visitor shall render OSM objects such that they 101 * look inactive. Example: rendering of data in an inactive layer using light gray as color only. 102 * @throws IllegalArgumentException thrown if {@code g} is null 103 * @throws IllegalArgumentException thrown if {@code nc} is null 104 */ 105 public WireframeMapRenderer(Graphics2D g, NavigatableComponent nc, boolean isInactiveMode) { 106 super(g, nc, isInactiveMode); 107 } 108 109 @Override 110 public void getColors() { 111 super.getColors(); 112 dfltWayColor = PaintColors.DEFAULT_WAY.get(); 113 relationColor = PaintColors.RELATION.get(); 114 untaggedWayColor = PaintColors.UNTAGGED_WAY.get(); 115 highlightColor = PaintColors.HIGHLIGHT_WIREFRAME.get(); 116 taggedColor = PaintColors.TAGGED.get(); 117 connectionColor = PaintColors.CONNECTION.get(); 118 119 if (taggedColor != nodeColor) { 120 taggedConnectionColor = taggedColor; 121 } else { 122 taggedConnectionColor = connectionColor; 123 } 124 } 125 126 @Override 127 protected void getSettings(boolean virtual) { 128 super.getSettings(virtual); 129 MapPaintSettings settings = MapPaintSettings.INSTANCE; 130 showDirectionArrow = settings.isShowDirectionArrow(); 131 showOnewayArrow = settings.isShowOnewayArrow(); 132 showHeadArrowOnly = settings.isShowHeadArrowOnly(); 133 showOrderNumber = settings.isShowOrderNumber(); 134 selectedNodeSize = settings.getSelectedNodeSize(); 135 unselectedNodeSize = settings.getUnselectedNodeSize(); 136 connectionNodeSize = settings.getConnectionNodeSize(); 137 taggedNodeSize = settings.getTaggedNodeSize(); 138 fillSelectedNode = settings.isFillSelectedNode(); 139 fillUnselectedNode = settings.isFillUnselectedNode(); 140 fillConnectionNode = settings.isFillConnectionNode(); 141 fillTaggedNode = settings.isFillTaggedNode(); 142 143 g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, 144 Main.pref.getBoolean("mappaint.wireframe.use-antialiasing", false) ? 145 RenderingHints.VALUE_ANTIALIAS_ON : RenderingHints.VALUE_ANTIALIAS_OFF); 146 } 147 148 /** 149 * Renders the dataset for display. 150 * 151 * @param data <code>DataSet</code> to display 152 * @param virtual <code>true</code> if virtual nodes are used 153 * @param bounds display boundaries 154 */ 155 @SuppressWarnings("unchecked") 156 @Override 157 public void render(DataSet data, boolean virtual, Bounds bounds) { 158 BBox bbox = bounds.toBBox(); 159 this.ds = data; 160 getSettings(virtual); 161 162 for (final Relation rel : data.searchRelations(bbox)) { 163 if (rel.isDrawable() && !ds.isSelected(rel) && !rel.isDisabledAndHidden()) { 164 rel.accept(this); 165 } 166 } 167 168 // draw tagged ways first, then untagged ways, then highlighted ways 169 List<Way> highlightedWays = new ArrayList<>(); 170 List<Way> untaggedWays = new ArrayList<>(); 171 172 for (final Way way : data.searchWays(bbox)){ 173 if (way.isDrawable() && !ds.isSelected(way) && !way.isDisabledAndHidden()) { 174 if (way.isHighlighted()) { 175 highlightedWays.add(way); 176 } else if (!way.isTagged()) { 177 untaggedWays.add(way); 178 } else { 179 way.accept(this); 180 } 181 } 182 } 183 displaySegments(); 184 185 // Display highlighted ways after the other ones (fix #8276) 186 List<Way> specialWays = new ArrayList<>(untaggedWays); 187 specialWays.addAll(highlightedWays); 188 for (final Way way : specialWays){ 189 way.accept(this); 190 } 191 specialWays.clear(); 192 displaySegments(); 193 194 for (final OsmPrimitive osm : data.getSelected()) { 195 if (osm.isDrawable()) { 196 osm.accept(this); 197 } 198 } 199 displaySegments(); 200 201 for (final OsmPrimitive osm: data.searchNodes(bbox)) { 202 if (osm.isDrawable() && !ds.isSelected(osm) && !osm.isDisabledAndHidden()) 203 { 204 osm.accept(this); 205 } 206 } 207 drawVirtualNodes(data, bbox); 208 209 // draw highlighted way segments over the already drawn ways. Otherwise each 210 // way would have to be checked if it contains a way segment to highlight when 211 // in most of the cases there won't be more than one segment. Since the wireframe 212 // renderer does not feature any transparency there should be no visual difference. 213 for (final WaySegment wseg : data.getHighlightedWaySegments()) { 214 drawSegment(nc.getPoint(wseg.getFirstNode()), nc.getPoint(wseg.getSecondNode()), highlightColor, false); 215 } 216 displaySegments(); 217 } 218 219 /** 220 * Helper function to calculate maximum of 4 values. 221 * 222 * @param a First value 223 * @param b Second value 224 * @param c Third value 225 * @param d Fourth value 226 */ 227 private static final int max(int a, int b, int c, int d) { 228 return Math.max(Math.max(a, b), Math.max(c, d)); 229 } 230 231 /** 232 * Draw a small rectangle. 233 * White if selected (as always) or red otherwise. 234 * 235 * @param n The node to draw. 236 */ 237 @Override 238 public void visit(Node n) { 239 if (n.isIncomplete()) return; 240 241 if (n.isHighlighted()) { 242 drawNode(n, highlightColor, selectedNodeSize, fillSelectedNode); 243 } else { 244 Color color; 245 246 if (isInactiveMode || n.isDisabled()) { 247 color = inactiveColor; 248 } else if (ds.isSelected(n)) { 249 color = selectedColor; 250 } else if (n.isConnectionNode()) { 251 if (isNodeTagged(n)) { 252 color = taggedConnectionColor; 253 } else { 254 color = connectionColor; 255 } 256 } else { 257 if (isNodeTagged(n)) { 258 color = taggedColor; 259 } else { 260 color = nodeColor; 261 } 262 } 263 264 final int size = max((ds.isSelected(n) ? selectedNodeSize : 0), 265 (isNodeTagged(n) ? taggedNodeSize : 0), 266 (n.isConnectionNode() ? connectionNodeSize : 0), 267 unselectedNodeSize); 268 269 final boolean fill = (ds.isSelected(n) && fillSelectedNode) || 270 (isNodeTagged(n) && fillTaggedNode) || 271 (n.isConnectionNode() && fillConnectionNode) || 272 fillUnselectedNode; 273 274 drawNode(n, color, size, fill); 275 } 276 } 277 278 private boolean isNodeTagged(Node n) { 279 return n.isTagged() || n.isAnnotated(); 280 } 281 282 /** 283 * Draw a line for all way segments. 284 * @param w The way to draw. 285 */ 286 @Override 287 public void visit(Way w) { 288 if (w.isIncomplete() || w.getNodesCount() < 2) 289 return; 290 291 /* show direction arrows, if draw.segment.relevant_directions_only is not set, the way is tagged with a direction key 292 (even if the tag is negated as in oneway=false) or the way is selected */ 293 294 boolean showThisDirectionArrow = ds.isSelected(w) || showDirectionArrow; 295 /* head only takes over control if the option is true, 296 the direction should be shown at all and not only because it's selected */ 297 boolean showOnlyHeadArrowOnly = showThisDirectionArrow && !ds.isSelected(w) && showHeadArrowOnly; 298 Color wayColor; 299 300 if (isInactiveMode || w.isDisabled()) { 301 wayColor = inactiveColor; 302 } else if(w.isHighlighted()) { 303 wayColor = highlightColor; 304 } else if(ds.isSelected(w)) { 305 wayColor = selectedColor; 306 } else if (!w.isTagged()) { 307 wayColor = untaggedWayColor; 308 } else { 309 wayColor = dfltWayColor; 310 } 311 312 Iterator<Node> it = w.getNodes().iterator(); 313 if (it.hasNext()) { 314 Point lastP = nc.getPoint(it.next()); 315 for (int orderNumber = 1; it.hasNext(); orderNumber++) { 316 Point p = nc.getPoint(it.next()); 317 drawSegment(lastP, p, wayColor, 318 showOnlyHeadArrowOnly ? !it.hasNext() : showThisDirectionArrow); 319 if (showOrderNumber && !isInactiveMode) { 320 drawOrderNumber(lastP, p, orderNumber, g.getColor()); 321 } 322 lastP = p; 323 } 324 } 325 } 326 327 /** 328 * Draw objects used in relations. 329 * @param r The relation to draw. 330 */ 331 @Override 332 public void visit(Relation r) { 333 if (r.isIncomplete()) return; 334 335 Color col; 336 if (isInactiveMode || r.isDisabled()) { 337 col = inactiveColor; 338 } else if (ds.isSelected(r)) { 339 col = selectedColor; 340 } else { 341 col = relationColor; 342 } 343 g.setColor(col); 344 345 for (RelationMember m : r.getMembers()) { 346 if (m.getMember().isIncomplete() || !m.getMember().isDrawable()) { 347 continue; 348 } 349 350 if (m.isNode()) { 351 Point p = nc.getPoint(m.getNode()); 352 if (p.x < 0 || p.y < 0 353 || p.x > nc.getWidth() || p.y > nc.getHeight()) { 354 continue; 355 } 356 357 g.drawOval(p.x-3, p.y-3, 6, 6); 358 } else if (m.isWay()) { 359 GeneralPath path = new GeneralPath(); 360 361 boolean first = true; 362 for (Node n : m.getWay().getNodes()) { 363 if (!n.isDrawable()) { 364 continue; 365 } 366 Point p = nc.getPoint(n); 367 if (first) { 368 path.moveTo(p.x, p.y); 369 first = false; 370 } else { 371 path.lineTo(p.x, p.y); 372 } 373 } 374 375 g.draw(relatedWayStroke.createStrokedShape(path)); 376 } 377 } 378 } 379 380 /** 381 * Visitor for changesets not used in this class 382 * @param cs The changeset for inspection. 383 */ 384 @Override 385 public void visit(Changeset cs) {/* ignore */} 386 387 @Override 388 public void drawNode(Node n, Color color, int size, boolean fill) { 389 if (size > 1) { 390 int radius = size / 2; 391 Point p = nc.getPoint(n); 392 if ((p.x < 0) || (p.y < 0) || (p.x > nc.getWidth()) 393 || (p.y > nc.getHeight())) 394 return; 395 g.setColor(color); 396 if (fill) { 397 g.fillRect(p.x - radius, p.y - radius, size, size); 398 g.drawRect(p.x - radius, p.y - radius, size, size); 399 } else { 400 g.drawRect(p.x - radius, p.y - radius, size, size); 401 } 402 } 403 } 404 405 /** 406 * Draw a line with the given color. 407 * 408 * @param path The path to append this segment. 409 * @param p1 First point of the way segment. 410 * @param p2 Second point of the way segment. 411 * @param showDirection <code>true</code> if segment direction should be indicated 412 */ 413 protected void drawSegment(GeneralPath path, Point p1, Point p2, boolean showDirection) { 414 Rectangle bounds = g.getClipBounds(); 415 bounds.grow(100, 100); // avoid arrow heads at the border 416 LineClip clip = new LineClip(p1, p2, bounds); 417 if (clip.execute()) { 418 p1 = clip.getP1(); 419 p2 = clip.getP2(); 420 path.moveTo(p1.x, p1.y); 421 path.lineTo(p2.x, p2.y); 422 423 if (showDirection) { 424 final double l = 10. / p1.distance(p2); 425 426 final double sx = l * (p1.x - p2.x); 427 final double sy = l * (p1.y - p2.y); 428 429 path.lineTo (p2.x + (int) Math.round(cosPHI * sx - sinPHI * sy), p2.y + (int) Math.round(sinPHI * sx + cosPHI * sy)); 430 path.moveTo (p2.x + (int) Math.round(cosPHI * sx + sinPHI * sy), p2.y + (int) Math.round(- sinPHI * sx + cosPHI * sy)); 431 path.lineTo(p2.x, p2.y); 432 } 433 } 434 } 435 436 /** 437 * Draw a line with the given color. 438 * 439 * @param p1 First point of the way segment. 440 * @param p2 Second point of the way segment. 441 * @param col The color to use for drawing line. 442 * @param showDirection <code>true</code> if segment direction should be indicated. 443 */ 444 protected void drawSegment(Point p1, Point p2, Color col, boolean showDirection) { 445 if (col != currentColor) { 446 displaySegments(col); 447 } 448 drawSegment(currentPath, p1, p2, showDirection); 449 } 450 451 /** 452 * Checks if a polygon is visible in display. 453 * 454 * @param polygon The polygon to check. 455 * @return <code>true</code> if polygon is visible. 456 */ 457 protected boolean isPolygonVisible(Polygon polygon) { 458 Rectangle bounds = polygon.getBounds(); 459 if (bounds.width == 0 && bounds.height == 0) return false; 460 if (bounds.x > nc.getWidth()) return false; 461 if (bounds.y > nc.getHeight()) return false; 462 if (bounds.x + bounds.width < 0) return false; 463 if (bounds.y + bounds.height < 0) return false; 464 return true; 465 } 466 467 /** 468 * Finally display all segments in currect path. 469 */ 470 protected void displaySegments() { 471 displaySegments(null); 472 } 473 474 /** 475 * Finally display all segments in currect path. 476 * 477 * @param newColor This color is set after the path is drawn. 478 */ 479 protected void displaySegments(Color newColor) { 480 if (currentPath != null) { 481 g.setColor(currentColor); 482 g.draw(currentPath); 483 currentPath = new GeneralPath(); 484 currentColor = newColor; 485 } 486 } 487}