source: josm/trunk/src/org/openstreetmap/josm/data/osm/visitor/paint/WireframeMapRenderer.java@ 7549

Last change on this file since 7549 was 7549, checked in by Don-vip, 10 years ago

fix #10307 - improvements to rendering of relations in wireframe mode
  • Property svn:eol-style set to native
File size: 17.7 KB
Line 
1/* License: GPL. For details, see LICENSE file. */
2package org.openstreetmap.josm.data.osm.visitor.paint;
3
4import java.awt.BasicStroke;
5import java.awt.Color;
6import java.awt.Graphics2D;
7import java.awt.Point;
8import java.awt.Polygon;
9import java.awt.Rectangle;
10import java.awt.RenderingHints;
11import java.awt.Stroke;
12import java.awt.geom.GeneralPath;
13import java.util.ArrayList;
14import java.util.Iterator;
15import java.util.List;
16
17import org.openstreetmap.josm.Main;
18import org.openstreetmap.josm.data.Bounds;
19import org.openstreetmap.josm.data.osm.BBox;
20import org.openstreetmap.josm.data.osm.Changeset;
21import org.openstreetmap.josm.data.osm.DataSet;
22import org.openstreetmap.josm.data.osm.Node;
23import org.openstreetmap.josm.data.osm.OsmPrimitive;
24import org.openstreetmap.josm.data.osm.Relation;
25import org.openstreetmap.josm.data.osm.RelationMember;
26import org.openstreetmap.josm.data.osm.Way;
27import org.openstreetmap.josm.data.osm.WaySegment;
28import org.openstreetmap.josm.data.osm.visitor.Visitor;
29import org.openstreetmap.josm.gui.NavigatableComponent;
30
31/**
32 * A map renderer that paints a simple scheme of every primitive it visits to a
33 * previous set graphic environment.
34 * @since 23
35 */
36public class WireframeMapRenderer extends AbstractMapRenderer implements Visitor {
37
38 /** Color Preference for ways not matching any other group */
39 protected Color dfltWayColor;
40 /** Color Preference for relations */
41 protected Color relationColor;
42 /** Color Preference for untagged ways */
43 protected Color untaggedWayColor;
44 /** Color Preference for tagged nodes */
45 protected Color taggedColor;
46 /** Color Preference for multiply connected nodes */
47 protected Color connectionColor;
48 /** Color Preference for tagged and multiply connected nodes */
49 protected Color taggedConnectionColor;
50 /** Preference: should directional arrows be displayed */
51 protected boolean showDirectionArrow;
52 /** Preference: should arrows for oneways be displayed */
53 protected boolean showOnewayArrow;
54 /** Preference: should only the last arrow of a way be displayed */
55 protected boolean showHeadArrowOnly;
56 /** Preference: should the segement numbers of ways be displayed */
57 protected boolean showOrderNumber;
58 /** Preference: should selected nodes be filled */
59 protected boolean fillSelectedNode;
60 /** Preference: should unselected nodes be filled */
61 protected boolean fillUnselectedNode;
62 /** Preference: should tagged nodes be filled */
63 protected boolean fillTaggedNode;
64 /** Preference: should multiply connected nodes be filled */
65 protected boolean fillConnectionNode;
66 /** Preference: size of selected nodes */
67 protected int selectedNodeSize;
68 /** Preference: size of unselected nodes */
69 protected int unselectedNodeSize;
70 /** Preference: size of multiply connected nodes */
71 protected int connectionNodeSize;
72 /** Preference: size of tagged nodes */
73 protected int taggedNodeSize;
74
75 /** Color cache to draw subsequent segments of same color as one <code>Path</code>. */
76 protected Color currentColor = null;
77 /** Path store to draw subsequent segments of same color as one <code>Path</code>. */
78 protected GeneralPath currentPath = new GeneralPath();
79 /**
80 * <code>DataSet</code> passed to the @{link render} function to overcome the argument
81 * limitations of @{link Visitor} interface. Only valid until end of rendering call.
82 */
83 private DataSet ds;
84
85 /** Helper variable for {@link #drawSegment} */
86 private static final double PHI = Math.toRadians(20);
87 /** Helper variable for {@link #drawSegment} */
88 private static final double cosPHI = Math.cos(PHI);
89 /** Helper variable for {@link #drawSegment} */
90 private static final double sinPHI = Math.sin(PHI);
91
92 /** Helper variable for {@link #visit(Relation)} */
93 private Stroke relatedWayStroke = new BasicStroke(
94 4, BasicStroke.CAP_SQUARE, BasicStroke.JOIN_BEVEL);
95
96 /**
97 * Creates an wireframe render
98 *
99 * @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 (ds.isSelected(r)) {
343 col = selectedColor;
344 } else {
345 col = relationColor;
346 }
347 g.setColor(col);
348
349 for (RelationMember m : r.getMembers()) {
350 if (m.getMember().isIncomplete() || !m.getMember().isDrawable()) {
351 continue;
352 }
353
354 if (m.isNode()) {
355 Point p = nc.getPoint(m.getNode());
356 if (p.x < 0 || p.y < 0
357 || p.x > nc.getWidth() || p.y > nc.getHeight()) {
358 continue;
359 }
360
361 g.drawOval(p.x-4, p.y-4, 9, 9);
362 } else if (m.isWay()) {
363 GeneralPath path = new GeneralPath();
364
365 boolean first = true;
366 for (Node n : m.getWay().getNodes()) {
367 if (!n.isDrawable()) {
368 continue;
369 }
370 Point p = nc.getPoint(n);
371 if (first) {
372 path.moveTo(p.x, p.y);
373 first = false;
374 } else {
375 path.lineTo(p.x, p.y);
376 }
377 }
378
379 g.draw(relatedWayStroke.createStrokedShape(path));
380 }
381 }
382 }
383
384 /**
385 * Visitor for changesets not used in this class
386 * @param cs The changeset for inspection.
387 */
388 @Override
389 public void visit(Changeset cs) {/* ignore */}
390
391 @Override
392 public void drawNode(Node n, Color color, int size, boolean fill) {
393 if (size > 1) {
394 int radius = size / 2;
395 Point p = nc.getPoint(n);
396 if ((p.x < 0) || (p.y < 0) || (p.x > nc.getWidth())
397 || (p.y > nc.getHeight()))
398 return;
399 g.setColor(color);
400 if (fill) {
401 g.fillRect(p.x - radius, p.y - radius, size, size);
402 g.drawRect(p.x - radius, p.y - radius, size, size);
403 } else {
404 g.drawRect(p.x - radius, p.y - radius, size, size);
405 }
406 }
407 }
408
409 /**
410 * Draw a line with the given color.
411 *
412 * @param path The path to append this segment.
413 * @param p1 First point of the way segment.
414 * @param p2 Second point of the way segment.
415 * @param showDirection <code>true</code> if segment direction should be indicated
416 */
417 protected void drawSegment(GeneralPath path, Point p1, Point p2, boolean showDirection) {
418 Rectangle bounds = g.getClipBounds();
419 bounds.grow(100, 100); // avoid arrow heads at the border
420 LineClip clip = new LineClip(p1, p2, bounds);
421 if (clip.execute()) {
422 p1 = clip.getP1();
423 p2 = clip.getP2();
424 path.moveTo(p1.x, p1.y);
425 path.lineTo(p2.x, p2.y);
426
427 if (showDirection) {
428 final double l = 10. / p1.distance(p2);
429
430 final double sx = l * (p1.x - p2.x);
431 final double sy = l * (p1.y - p2.y);
432
433 path.lineTo (p2.x + (int) Math.round(cosPHI * sx - sinPHI * sy), p2.y + (int) Math.round(sinPHI * sx + cosPHI * sy));
434 path.moveTo (p2.x + (int) Math.round(cosPHI * sx + sinPHI * sy), p2.y + (int) Math.round(- sinPHI * sx + cosPHI * sy));
435 path.lineTo(p2.x, p2.y);
436 }
437 }
438 }
439
440 /**
441 * Draw a line with the given color.
442 *
443 * @param p1 First point of the way segment.
444 * @param p2 Second point of the way segment.
445 * @param col The color to use for drawing line.
446 * @param showDirection <code>true</code> if segment direction should be indicated.
447 */
448 protected void drawSegment(Point p1, Point p2, Color col, boolean showDirection) {
449 if (col != currentColor) {
450 displaySegments(col);
451 }
452 drawSegment(currentPath, p1, p2, showDirection);
453 }
454
455 /**
456 * Checks if a polygon is visible in display.
457 *
458 * @param polygon The polygon to check.
459 * @return <code>true</code> if polygon is visible.
460 */
461 protected boolean isPolygonVisible(Polygon polygon) {
462 Rectangle bounds = polygon.getBounds();
463 if (bounds.width == 0 && bounds.height == 0) return false;
464 if (bounds.x > nc.getWidth()) return false;
465 if (bounds.y > nc.getHeight()) return false;
466 if (bounds.x + bounds.width < 0) return false;
467 if (bounds.y + bounds.height < 0) return false;
468 return true;
469 }
470
471 /**
472 * Finally display all segments in currect path.
473 */
474 protected void displaySegments() {
475 displaySegments(null);
476 }
477
478 /**
479 * Finally display all segments in currect path.
480 *
481 * @param newColor This color is set after the path is drawn.
482 */
483 protected void displaySegments(Color newColor) {
484 if (currentPath != null) {
485 g.setColor(currentColor);
486 g.draw(currentPath);
487 currentPath = new GeneralPath();
488 currentColor = newColor;
489 }
490 }
491}
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