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 * @since 23 035 */ 036public class WireframeMapRenderer extends AbstractMapRenderer implements Visitor { 037 038 /** Color Preference for ways not matching any other group */ 039 protected Color dfltWayColor; 040 /** Color Preference for relations */ 041 protected Color relationColor; 042 /** Color Preference for untagged ways */ 043 protected Color untaggedWayColor; 044 /** Color Preference for tagged nodes */ 045 protected Color taggedColor; 046 /** Color Preference for multiply connected nodes */ 047 protected Color connectionColor; 048 /** Color Preference for tagged and multiply connected nodes */ 049 protected Color taggedConnectionColor; 050 /** Preference: should directional arrows be displayed */ 051 protected boolean showDirectionArrow; 052 /** Preference: should arrows for oneways be displayed */ 053 protected boolean showOnewayArrow; 054 /** Preference: should only the last arrow of a way be displayed */ 055 protected boolean showHeadArrowOnly; 056 /** Preference: should the segement numbers of ways be displayed */ 057 protected boolean showOrderNumber; 058 /** Preference: should selected nodes be filled */ 059 protected boolean fillSelectedNode; 060 /** Preference: should unselected nodes be filled */ 061 protected boolean fillUnselectedNode; 062 /** Preference: should tagged nodes be filled */ 063 protected boolean fillTaggedNode; 064 /** Preference: should multiply connected nodes be filled */ 065 protected boolean fillConnectionNode; 066 /** Preference: size of selected nodes */ 067 protected int selectedNodeSize; 068 /** Preference: size of unselected nodes */ 069 protected int unselectedNodeSize; 070 /** Preference: size of multiply connected nodes */ 071 protected int connectionNodeSize; 072 /** Preference: size of tagged nodes */ 073 protected int taggedNodeSize; 074 075 /** Color cache to draw subsequent segments of same color as one <code>Path</code>. */ 076 protected Color currentColor = null; 077 /** Path store to draw subsequent segments of same color as one <code>Path</code>. */ 078 protected GeneralPath currentPath = new GeneralPath(); 079 /** 080 * <code>DataSet</code> passed to the @{link render} function to overcome the argument 081 * limitations of @{link Visitor} interface. Only valid until end of rendering call. 082 */ 083 private DataSet ds; 084 085 /** Helper variable for {@link #drawSegment} */ 086 private static final double PHI = Math.toRadians(20); 087 /** Helper variable for {@link #drawSegment} */ 088 private static final double cosPHI = Math.cos(PHI); 089 /** Helper variable for {@link #drawSegment} */ 090 private static final double sinPHI = Math.sin(PHI); 091 092 /** Helper variable for {@link #visit(Relation)} */ 093 private Stroke relatedWayStroke = new BasicStroke( 094 4, BasicStroke.CAP_SQUARE, BasicStroke.JOIN_BEVEL); 095 096 /** 097 * Creates an wireframe render 098 * 099 * @param g the graphics context. Must not be null. 100 * @param nc the map viewport. Must not be null. 101 * @param isInactiveMode if true, the paint visitor shall render OSM objects such that they 102 * look inactive. Example: rendering of data in an inactive layer using light gray as color only. 103 * @throws IllegalArgumentException thrown if {@code g} is null 104 * @throws IllegalArgumentException thrown if {@code nc} is null 105 */ 106 public WireframeMapRenderer(Graphics2D g, NavigatableComponent nc, boolean isInactiveMode) { 107 super(g, nc, isInactiveMode); 108 } 109 110 @Override 111 public void getColors() { 112 super.getColors(); 113 dfltWayColor = PaintColors.DEFAULT_WAY.get(); 114 relationColor = PaintColors.RELATION.get(); 115 untaggedWayColor = PaintColors.UNTAGGED_WAY.get(); 116 highlightColor = PaintColors.HIGHLIGHT_WIREFRAME.get(); 117 taggedColor = PaintColors.TAGGED.get(); 118 connectionColor = PaintColors.CONNECTION.get(); 119 120 if (taggedColor != nodeColor) { 121 taggedConnectionColor = taggedColor; 122 } else { 123 taggedConnectionColor = connectionColor; 124 } 125 } 126 127 @Override 128 protected void getSettings(boolean virtual) { 129 super.getSettings(virtual); 130 MapPaintSettings settings = MapPaintSettings.INSTANCE; 131 showDirectionArrow = settings.isShowDirectionArrow(); 132 showOnewayArrow = settings.isShowOnewayArrow(); 133 showHeadArrowOnly = settings.isShowHeadArrowOnly(); 134 showOrderNumber = settings.isShowOrderNumber(); 135 selectedNodeSize = settings.getSelectedNodeSize(); 136 unselectedNodeSize = settings.getUnselectedNodeSize(); 137 connectionNodeSize = settings.getConnectionNodeSize(); 138 taggedNodeSize = settings.getTaggedNodeSize(); 139 fillSelectedNode = settings.isFillSelectedNode(); 140 fillUnselectedNode = settings.isFillUnselectedNode(); 141 fillConnectionNode = settings.isFillConnectionNode(); 142 fillTaggedNode = settings.isFillTaggedNode(); 143 144 g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, 145 Main.pref.getBoolean("mappaint.wireframe.use-antialiasing", false) ? 146 RenderingHints.VALUE_ANTIALIAS_ON : RenderingHints.VALUE_ANTIALIAS_OFF); 147 } 148 149 /** 150 * Renders the dataset for display. 151 * 152 * @param data <code>DataSet</code> to display 153 * @param virtual <code>true</code> if virtual nodes are used 154 * @param bounds display boundaries 155 */ 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 (n.isSelected()) { 249 color = selectedColor; 250 } else if (n.isMemberOfSelected()) { 251 color = relationSelectedColor; 252 } else if (n.isConnectionNode()) { 253 if (isNodeTagged(n)) { 254 color = taggedConnectionColor; 255 } else { 256 color = connectionColor; 257 } 258 } else { 259 if (isNodeTagged(n)) { 260 color = taggedColor; 261 } else { 262 color = nodeColor; 263 } 264 } 265 266 final int size = max((ds.isSelected(n) ? selectedNodeSize : 0), 267 (isNodeTagged(n) ? taggedNodeSize : 0), 268 (n.isConnectionNode() ? connectionNodeSize : 0), 269 unselectedNodeSize); 270 271 final boolean fill = (ds.isSelected(n) && fillSelectedNode) || 272 (isNodeTagged(n) && fillTaggedNode) || 273 (n.isConnectionNode() && fillConnectionNode) || 274 fillUnselectedNode; 275 276 drawNode(n, color, size, fill); 277 } 278 } 279 280 private boolean isNodeTagged(Node n) { 281 return n.isTagged() || n.isAnnotated(); 282 } 283 284 /** 285 * Draw a line for all way segments. 286 * @param w The way to draw. 287 */ 288 @Override 289 public void visit(Way w) { 290 if (w.isIncomplete() || w.getNodesCount() < 2) 291 return; 292 293 /* show direction arrows, if draw.segment.relevant_directions_only is not set, the way is tagged with a direction key 294 (even if the tag is negated as in oneway=false) or the way is selected */ 295 296 boolean showThisDirectionArrow = ds.isSelected(w) || showDirectionArrow; 297 /* head only takes over control if the option is true, 298 the direction should be shown at all and not only because it's selected */ 299 boolean showOnlyHeadArrowOnly = showThisDirectionArrow && !ds.isSelected(w) && showHeadArrowOnly; 300 Color wayColor; 301 302 if (isInactiveMode || w.isDisabled()) { 303 wayColor = inactiveColor; 304 } else if (w.isHighlighted()) { 305 wayColor = highlightColor; 306 } else if (w.isSelected()) { 307 wayColor = selectedColor; 308 } else if (w.isMemberOfSelected()) { 309 wayColor = relationSelectedColor; 310 } else if (!w.isTagged()) { 311 wayColor = untaggedWayColor; 312 } else { 313 wayColor = dfltWayColor; 314 } 315 316 Iterator<Node> it = w.getNodes().iterator(); 317 if (it.hasNext()) { 318 Point lastP = nc.getPoint(it.next()); 319 for (int orderNumber = 1; it.hasNext(); orderNumber++) { 320 Point p = nc.getPoint(it.next()); 321 drawSegment(lastP, p, wayColor, 322 showOnlyHeadArrowOnly ? !it.hasNext() : showThisDirectionArrow); 323 if (showOrderNumber && !isInactiveMode) { 324 drawOrderNumber(lastP, p, orderNumber, g.getColor()); 325 } 326 lastP = p; 327 } 328 } 329 } 330 331 /** 332 * Draw objects used in relations. 333 * @param r The relation to draw. 334 */ 335 @Override 336 public void visit(Relation r) { 337 if (r.isIncomplete()) return; 338 339 Color col; 340 if (isInactiveMode || r.isDisabled()) { 341 col = inactiveColor; 342 } else if (r.isSelected()) { 343 col = selectedColor; 344 } else if (r.isMultipolygon() && r.isMemberOfSelected()) { 345 col = relationSelectedColor; 346 } else { 347 col = relationColor; 348 } 349 g.setColor(col); 350 351 for (RelationMember m : r.getMembers()) { 352 if (m.getMember().isIncomplete() || !m.getMember().isDrawable()) { 353 continue; 354 } 355 356 if (m.isNode()) { 357 Point p = nc.getPoint(m.getNode()); 358 if (p.x < 0 || p.y < 0 359 || p.x > nc.getWidth() || p.y > nc.getHeight()) { 360 continue; 361 } 362 363 g.drawOval(p.x-4, p.y-4, 9, 9); 364 } else if (m.isWay()) { 365 GeneralPath path = new GeneralPath(); 366 367 boolean first = true; 368 for (Node n : m.getWay().getNodes()) { 369 if (!n.isDrawable()) { 370 continue; 371 } 372 Point p = nc.getPoint(n); 373 if (first) { 374 path.moveTo(p.x, p.y); 375 first = false; 376 } else { 377 path.lineTo(p.x, p.y); 378 } 379 } 380 381 g.draw(relatedWayStroke.createStrokedShape(path)); 382 } 383 } 384 } 385 386 /** 387 * Visitor for changesets not used in this class 388 * @param cs The changeset for inspection. 389 */ 390 @Override 391 public void visit(Changeset cs) {/* ignore */} 392 393 @Override 394 public void drawNode(Node n, Color color, int size, boolean fill) { 395 if (size > 1) { 396 int radius = size / 2; 397 Point p = nc.getPoint(n); 398 if ((p.x < 0) || (p.y < 0) || (p.x > nc.getWidth()) 399 || (p.y > nc.getHeight())) 400 return; 401 g.setColor(color); 402 if (fill) { 403 g.fillRect(p.x - radius, p.y - radius, size, size); 404 g.drawRect(p.x - radius, p.y - radius, size, size); 405 } else { 406 g.drawRect(p.x - radius, p.y - radius, size, size); 407 } 408 } 409 } 410 411 /** 412 * Draw a line with the given color. 413 * 414 * @param path The path to append this segment. 415 * @param p1 First point of the way segment. 416 * @param p2 Second point of the way segment. 417 * @param showDirection <code>true</code> if segment direction should be indicated 418 */ 419 protected void drawSegment(GeneralPath path, Point p1, Point p2, boolean showDirection) { 420 Rectangle bounds = g.getClipBounds(); 421 bounds.grow(100, 100); // avoid arrow heads at the border 422 LineClip clip = new LineClip(p1, p2, bounds); 423 if (clip.execute()) { 424 p1 = clip.getP1(); 425 p2 = clip.getP2(); 426 path.moveTo(p1.x, p1.y); 427 path.lineTo(p2.x, p2.y); 428 429 if (showDirection) { 430 final double l = 10. / p1.distance(p2); 431 432 final double sx = l * (p1.x - p2.x); 433 final double sy = l * (p1.y - p2.y); 434 435 path.lineTo (p2.x + (int) Math.round(cosPHI * sx - sinPHI * sy), p2.y + (int) Math.round(sinPHI * sx + cosPHI * sy)); 436 path.moveTo (p2.x + (int) Math.round(cosPHI * sx + sinPHI * sy), p2.y + (int) Math.round(- sinPHI * sx + cosPHI * sy)); 437 path.lineTo(p2.x, p2.y); 438 } 439 } 440 } 441 442 /** 443 * Draw a line with the given color. 444 * 445 * @param p1 First point of the way segment. 446 * @param p2 Second point of the way segment. 447 * @param col The color to use for drawing line. 448 * @param showDirection <code>true</code> if segment direction should be indicated. 449 */ 450 protected void drawSegment(Point p1, Point p2, Color col, boolean showDirection) { 451 if (col != currentColor) { 452 displaySegments(col); 453 } 454 drawSegment(currentPath, p1, p2, showDirection); 455 } 456 457 /** 458 * Checks if a polygon is visible in display. 459 * 460 * @param polygon The polygon to check. 461 * @return <code>true</code> if polygon is visible. 462 */ 463 protected boolean isPolygonVisible(Polygon polygon) { 464 Rectangle bounds = polygon.getBounds(); 465 if (bounds.width == 0 && bounds.height == 0) return false; 466 if (bounds.x > nc.getWidth()) return false; 467 if (bounds.y > nc.getHeight()) return false; 468 if (bounds.x + bounds.width < 0) return false; 469 if (bounds.y + bounds.height < 0) return false; 470 return true; 471 } 472 473 /** 474 * Finally display all segments in currect path. 475 */ 476 protected void displaySegments() { 477 displaySegments(null); 478 } 479 480 /** 481 * Finally display all segments in currect path. 482 * 483 * @param newColor This color is set after the path is drawn. 484 */ 485 protected void displaySegments(Color newColor) { 486 if (currentPath != null) { 487 g.setColor(currentColor); 488 g.draw(currentPath); 489 currentPath = new GeneralPath(); 490 currentColor = newColor; 491 } 492 } 493}