source: josm/trunk/src/org/openstreetmap/josm/data/osm/visitor/paint/WireframeMapRenderer.java@ 9243

Last change on this file since 9243 was 9243, checked in by Don-vip, 8 years ago

javadoc update
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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.Rectangle;
9import java.awt.RenderingHints;
10import java.awt.Stroke;
11import java.awt.geom.GeneralPath;
12import java.util.ArrayList;
13import java.util.Iterator;
14import java.util.List;
15
16import org.openstreetmap.josm.Main;
17import org.openstreetmap.josm.data.Bounds;
18import org.openstreetmap.josm.data.osm.BBox;
19import org.openstreetmap.josm.data.osm.Changeset;
20import org.openstreetmap.josm.data.osm.DataSet;
21import org.openstreetmap.josm.data.osm.Node;
22import org.openstreetmap.josm.data.osm.OsmPrimitive;
23import org.openstreetmap.josm.data.osm.Relation;
24import org.openstreetmap.josm.data.osm.RelationMember;
25import org.openstreetmap.josm.data.osm.Way;
26import org.openstreetmap.josm.data.osm.WaySegment;
27import org.openstreetmap.josm.data.osm.visitor.Visitor;
28import org.openstreetmap.josm.gui.NavigatableComponent;
29
30/**
31 * A map renderer that paints a simple scheme of every primitive it visits to a
32 * previous set graphic environment.
33 * @since 23
34 */
35public class WireframeMapRenderer extends AbstractMapRenderer implements Visitor {
36
37 /** Color Preference for ways not matching any other group */
38 protected Color dfltWayColor;
39 /** Color Preference for relations */
40 protected Color relationColor;
41 /** Color Preference for untagged ways */
42 protected Color untaggedWayColor;
43 /** Color Preference for tagged nodes */
44 protected Color taggedColor;
45 /** Color Preference for multiply connected nodes */
46 protected Color connectionColor;
47 /** Color Preference for tagged and multiply connected nodes */
48 protected Color taggedConnectionColor;
49 /** Preference: should directional arrows be displayed */
50 protected boolean showDirectionArrow;
51 /** Preference: should arrows for oneways be displayed */
52 protected boolean showOnewayArrow;
53 /** Preference: should only the last arrow of a way be displayed */
54 protected boolean showHeadArrowOnly;
55 /** Preference: should the segment numbers of ways be displayed */
56 protected boolean showOrderNumber;
57 /** Preference: should selected nodes be filled */
58 protected boolean fillSelectedNode;
59 /** Preference: should unselected nodes be filled */
60 protected boolean fillUnselectedNode;
61 /** Preference: should tagged nodes be filled */
62 protected boolean fillTaggedNode;
63 /** Preference: should multiply connected nodes be filled */
64 protected boolean fillConnectionNode;
65 /** Preference: size of selected nodes */
66 protected int selectedNodeSize;
67 /** Preference: size of unselected nodes */
68 protected int unselectedNodeSize;
69 /** Preference: size of multiply connected nodes */
70 protected int connectionNodeSize;
71 /** Preference: size of tagged nodes */
72 protected int taggedNodeSize;
73
74 /** Color cache to draw subsequent segments of same color as one <code>Path</code>. */
75 protected Color currentColor;
76 /** Path store to draw subsequent segments of same color as one <code>Path</code>. */
77 protected GeneralPath currentPath = new GeneralPath();
78 /**
79 * <code>DataSet</code> passed to the @{link render} function to overcome the argument
80 * limitations of @{link Visitor} interface. Only valid until end of rendering call.
81 */
82 private DataSet ds;
83
84 /** Helper variable for {@link #drawSegment} */
85 private static final double PHI = Math.toRadians(20);
86 /** Helper variable for {@link #drawSegment} */
87 private static final double cosPHI = Math.cos(PHI);
88 /** Helper variable for {@link #drawSegment} */
89 private static final double sinPHI = Math.sin(PHI);
90
91 /** Helper variable for {@link #visit(Relation)} */
92 private final Stroke relatedWayStroke = new BasicStroke(
93 4, BasicStroke.CAP_SQUARE, BasicStroke.JOIN_BEVEL);
94
95 /**
96 * Creates an wireframe render
97 *
98 * @param g the graphics context. Must not be null.
99 * @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 if {@code g} is null
103 * @throws IllegalArgumentException 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 @Override
156 public void render(DataSet data, boolean virtual, Bounds bounds) {
157 BBox bbox = bounds.toBBox();
158 this.ds = data;
159 getSettings(virtual);
160
161 for (final Relation rel : data.searchRelations(bbox)) {
162 if (rel.isDrawable() && !ds.isSelected(rel) && !rel.isDisabledAndHidden()) {
163 rel.accept(this);
164 }
165 }
166
167 // draw tagged ways first, then untagged ways, then highlighted ways
168 List<Way> highlightedWays = new ArrayList<>();
169 List<Way> untaggedWays = new ArrayList<>();
170
171 for (final Way way : data.searchWays(bbox)) {
172 if (way.isDrawable() && !ds.isSelected(way) && !way.isDisabledAndHidden()) {
173 if (way.isHighlighted()) {
174 highlightedWays.add(way);
175 } else if (!way.isTagged()) {
176 untaggedWays.add(way);
177 } else {
178 way.accept(this);
179 }
180 }
181 }
182 displaySegments();
183
184 // Display highlighted ways after the other ones (fix #8276)
185 List<Way> specialWays = new ArrayList<>(untaggedWays);
186 specialWays.addAll(highlightedWays);
187 for (final Way way : specialWays) {
188 way.accept(this);
189 }
190 specialWays.clear();
191 displaySegments();
192
193 for (final OsmPrimitive osm : data.getSelected()) {
194 if (osm.isDrawable()) {
195 osm.accept(this);
196 }
197 }
198 displaySegments();
199
200 for (final OsmPrimitive osm: data.searchNodes(bbox)) {
201 if (osm.isDrawable() && !ds.isSelected(osm) && !osm.isDisabledAndHidden()) {
202 osm.accept(this);
203 }
204 }
205 drawVirtualNodes(data, bbox);
206
207 // draw highlighted way segments over the already drawn ways. Otherwise each
208 // way would have to be checked if it contains a way segment to highlight when
209 // in most of the cases there won't be more than one segment. Since the wireframe
210 // renderer does not feature any transparency there should be no visual difference.
211 for (final WaySegment wseg : data.getHighlightedWaySegments()) {
212 drawSegment(nc.getPoint(wseg.getFirstNode()), nc.getPoint(wseg.getSecondNode()), highlightColor, false);
213 }
214 displaySegments();
215 }
216
217 /**
218 * Helper function to calculate maximum of 4 values.
219 *
220 * @param a First value
221 * @param b Second value
222 * @param c Third value
223 * @param d Fourth value
224 * @return maximumof {@code a}, {@code b}, {@code c}, {@code d}
225 */
226 private static int max(int a, int b, int c, int d) {
227 return Math.max(Math.max(a, b), Math.max(c, d));
228 }
229
230 /**
231 * Draw a small rectangle.
232 * White if selected (as always) or red otherwise.
233 *
234 * @param n The node to draw.
235 */
236 @Override
237 public void visit(Node n) {
238 if (n.isIncomplete()) return;
239
240 if (n.isHighlighted()) {
241 drawNode(n, highlightColor, selectedNodeSize, fillSelectedNode);
242 } else {
243 Color color;
244
245 if (isInactiveMode || n.isDisabled()) {
246 color = inactiveColor;
247 } else if (n.isSelected()) {
248 color = selectedColor;
249 } else if (n.isMemberOfSelected()) {
250 color = relationSelectedColor;
251 } else if (n.isConnectionNode()) {
252 if (isNodeTagged(n)) {
253 color = taggedConnectionColor;
254 } else {
255 color = connectionColor;
256 }
257 } else {
258 if (isNodeTagged(n)) {
259 color = taggedColor;
260 } else {
261 color = nodeColor;
262 }
263 }
264
265 final int size = max(ds.isSelected(n) ? selectedNodeSize : 0,
266 isNodeTagged(n) ? taggedNodeSize : 0,
267 n.isConnectionNode() ? connectionNodeSize : 0,
268 unselectedNodeSize);
269
270 final boolean fill = (ds.isSelected(n) && fillSelectedNode) ||
271 (isNodeTagged(n) && fillTaggedNode) ||
272 (n.isConnectionNode() && fillConnectionNode) ||
273 fillUnselectedNode;
274
275 drawNode(n, color, size, fill);
276 }
277 }
278
279 private static boolean isNodeTagged(Node n) {
280 return n.isTagged() || n.isAnnotated();
281 }
282
283 /**
284 * Draw a line for all way segments.
285 * @param w The way to draw.
286 */
287 @Override
288 public void visit(Way w) {
289 if (w.isIncomplete() || w.getNodesCount() < 2)
290 return;
291
292 /* show direction arrows, if draw.segment.relevant_directions_only is not set, the way is tagged with a direction key
293 (even if the tag is negated as in oneway=false) or the way is selected */
294
295 boolean showThisDirectionArrow = ds.isSelected(w) || showDirectionArrow;
296 /* head only takes over control if the option is true,
297 the direction should be shown at all and not only because it's selected */
298 boolean showOnlyHeadArrowOnly = showThisDirectionArrow && !ds.isSelected(w) && showHeadArrowOnly;
299 Color wayColor;
300
301 if (isInactiveMode || w.isDisabled()) {
302 wayColor = inactiveColor;
303 } else if (w.isHighlighted()) {
304 wayColor = highlightColor;
305 } else if (w.isSelected()) {
306 wayColor = selectedColor;
307 } else if (w.isMemberOfSelected()) {
308 wayColor = relationSelectedColor;
309 } else if (!w.isTagged()) {
310 wayColor = untaggedWayColor;
311 } else {
312 wayColor = dfltWayColor;
313 }
314
315 Iterator<Node> it = w.getNodes().iterator();
316 if (it.hasNext()) {
317 Point lastP = nc.getPoint(it.next());
318 for (int orderNumber = 1; it.hasNext(); orderNumber++) {
319 Point p = nc.getPoint(it.next());
320 drawSegment(lastP, p, wayColor,
321 showOnlyHeadArrowOnly ? !it.hasNext() : showThisDirectionArrow);
322 if (showOrderNumber && !isInactiveMode) {
323 drawOrderNumber(lastP, p, orderNumber, g.getColor());
324 }
325 lastP = p;
326 }
327 }
328 }
329
330 /**
331 * Draw objects used in relations.
332 * @param r The relation to draw.
333 */
334 @Override
335 public void visit(Relation r) {
336 if (r.isIncomplete()) return;
337
338 Color col;
339 if (isInactiveMode || r.isDisabled()) {
340 col = inactiveColor;
341 } else if (r.isSelected()) {
342 col = selectedColor;
343 } else if (r.isMultipolygon() && r.isMemberOfSelected()) {
344 col = relationSelectedColor;
345 } else {
346 col = relationColor;
347 }
348 g.setColor(col);
349
350 for (RelationMember m : r.getMembers()) {
351 if (m.getMember().isIncomplete() || !m.getMember().isDrawable()) {
352 continue;
353 }
354
355 if (m.isNode()) {
356 Point p = nc.getPoint(m.getNode());
357 if (p.x < 0 || p.y < 0
358 || p.x > nc.getWidth() || p.y > nc.getHeight()) {
359 continue;
360 }
361
362 g.drawOval(p.x-4, p.y-4, 9, 9);
363 } else if (m.isWay()) {
364 GeneralPath path = new GeneralPath();
365
366 boolean first = true;
367 for (Node n : m.getWay().getNodes()) {
368 if (!n.isDrawable()) {
369 continue;
370 }
371 Point p = nc.getPoint(n);
372 if (first) {
373 path.moveTo(p.x, p.y);
374 first = false;
375 } else {
376 path.lineTo(p.x, p.y);
377 }
378 }
379
380 g.draw(relatedWayStroke.createStrokedShape(path));
381 }
382 }
383 }
384
385 /**
386 * Visitor for changesets not used in this class
387 * @param cs The changeset for inspection.
388 */
389 @Override
390 public void visit(Changeset cs) {/* ignore */}
391
392 @Override
393 public void drawNode(Node n, Color color, int size, boolean fill) {
394 if (size > 1) {
395 int radius = size / 2;
396 Point p = nc.getPoint(n);
397 if ((p.x < 0) || (p.y < 0) || (p.x > nc.getWidth())
398 || (p.y > nc.getHeight()))
399 return;
400 g.setColor(color);
401 if (fill) {
402 g.fillRect(p.x - radius, p.y - radius, size, size);
403 g.drawRect(p.x - radius, p.y - radius, size, size);
404 } else {
405 g.drawRect(p.x - radius, p.y - radius, size, size);
406 }
407 }
408 }
409
410 /**
411 * Draw a line with the given color.
412 *
413 * @param path The path to append this segment.
414 * @param p1 First point of the way segment.
415 * @param p2 Second point of the way segment.
416 * @param showDirection <code>true</code> if segment direction should be indicated
417 */
418 protected void drawSegment(GeneralPath path, Point p1, Point p2, boolean showDirection) {
419 Rectangle bounds = g.getClipBounds();
420 bounds.grow(100, 100); // avoid arrow heads at the border
421 LineClip clip = new LineClip(p1, p2, bounds);
422 if (clip.execute()) {
423 p1 = clip.getP1();
424 p2 = clip.getP2();
425 path.moveTo(p1.x, p1.y);
426 path.lineTo(p2.x, p2.y);
427
428 if (showDirection) {
429 final double l = 10. / p1.distance(p2);
430
431 final double sx = l * (p1.x - p2.x);
432 final double sy = l * (p1.y - p2.y);
433
434 path.lineTo(p2.x + (int) Math.round(cosPHI * sx - sinPHI * sy), p2.y + (int) Math.round(sinPHI * sx + cosPHI * sy));
435 path.moveTo(p2.x + (int) Math.round(cosPHI * sx + sinPHI * sy), p2.y + (int) Math.round(-sinPHI * sx + cosPHI * sy));
436 path.lineTo(p2.x, p2.y);
437 }
438 }
439 }
440
441 /**
442 * Draw a line with the given color.
443 *
444 * @param p1 First point of the way segment.
445 * @param p2 Second point of the way segment.
446 * @param col The color to use for drawing line.
447 * @param showDirection <code>true</code> if segment direction should be indicated.
448 */
449 protected void drawSegment(Point p1, Point p2, Color col, boolean showDirection) {
450 if (col != currentColor) {
451 displaySegments(col);
452 }
453 drawSegment(currentPath, p1, p2, showDirection);
454 }
455
456 /**
457 * Finally display all segments in currect path.
458 */
459 protected void displaySegments() {
460 displaySegments(null);
461 }
462
463 /**
464 * Finally display all segments in currect path.
465 *
466 * @param newColor This color is set after the path is drawn.
467 */
468 protected void displaySegments(Color newColor) {
469 if (currentPath != null) {
470 g.setColor(currentColor);
471 g.draw(currentPath);
472 currentPath = new GeneralPath();
473 currentColor = newColor;
474 }
475 }
476}
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