source: trunk/src/org/expeditee/items/Dot.java@ 67

Last change on this file since 67 was 67, checked in by ra33, 16 years ago

Fixed a bunch of problems with rectangles and resizing the window, as well as adding some more unit tests etc.
File size: 7.4 KB
Line 
1package org.expeditee.items;
2
3import java.awt.Color;
4import java.awt.Graphics2D;
5import java.awt.Polygon;
6import java.awt.Rectangle;
7import java.util.ArrayList;
8import java.util.LinkedList;
9import java.util.List;
10
11import org.expeditee.gui.Frame;
12
13/**
14 * Represents a point on the screen. All Point objects are stored as x,y pairs
15 * with an Item ID. Note: Lines and all combinates of lines (rectangles, etc)
16 * are represented only as Points that share line IDs.
17 *
18 * @author jdm18
19 *
20 */
21public class Dot extends Item {
22
23 // Standard Item variables
24
25 private static final int _MINIMUM_DOT_SIZE = 6;
26
27 // the polygon surrounding this point, used for 'gravity'
28 private Polygon _poly = null;
29
30 private int _pointType = Item.POINTTYPE_SQUARE;
31
32 private boolean _filled = true;
33
34 protected boolean _filledHighlight = false;
35
36 public Dot(int id) {
37 super();
38 setID(id);
39 }
40
41 /**
42 * Constructs a new Point with the given x,y coordinates and Item ID.
43 *
44 * @param x
45 * The x coordinate of this point
46 * @param y
47 * The y coordinate of this point
48 * @param id
49 * The Item ID of this Point
50 */
51 public Dot(int x, int y, int id) {
52 super();
53 setID(id);
54 setPosition(x, y);
55 }
56
57 public void setPointType(int type) {
58 _pointType = type;
59 }
60
61 public void useFilledPoints(boolean val) {
62 _filled = val;
63 }
64
65 @Override
66 protected boolean hasVisibleArrow() {
67 return getArrowheadRatio() != 0 && getArrowheadLength() != 0;
68 }
69
70 /**
71 * Sets the 'thickness' of this Dot, that is, how many pixels this Dot
72 * should be.
73 *
74 * @param thick
75 * The number of pixels to use when displaying this Dot The Dot
76 * is displayed as a thick x thick square.
77 */
78 @Override
79 public void setThickness(float thick) {
80 super.setThickness(thick);
81
82 updatePolygon();
83 }
84
85 @Override
86 public void setColor(Color c) {
87 super.setColor(c);
88
89 // update the colour of any lines
90 for (Line line : getLines())
91 line.setColor(c);
92 }
93
94 public void paintFill(Graphics2D g) {
95 if (getFillColor() != null && getEnclosingDots() != null) {
96 g.setColor(getFillColor());
97 g.fillPolygon(getEnclosedShape());
98 }
99 }
100
101 @Override
102 public void paint(Graphics2D g) {
103 if (isHighlighted() /* && !Frame.FreeItems.contains(this) */) {
104 g.setColor(getHighlightColor());
105 // Draw the highlighting rectangle surrounding the dot
106 // this is drawn even if its part of a rectangle
107 Rectangle rect = getPolygon().getBounds();
108 if (_mode == SelectedMode.Enclosed ||
109 // Make sure single dots are highlighted filled
110 this.getConnected().size() <= 1)
111 g.fillRect(rect.x, rect.y, rect.width, rect.height);
112 else if (_mode == SelectedMode.Connected)
113 g.drawRect(rect.x, rect.y, rect.width, rect.height);
114 else if (_mode == SelectedMode.Normal) {
115 g.fillOval(rect.x, rect.y, rect.width, rect.height);
116 }
117 //System.out.println(_mode.toString());
118 }
119
120 // dots on lines are hidden
121 if (getLines().size() > 0)
122 return;
123
124 g.setColor(getPaintColor());
125
126 int thick = (int) getThickness();
127 if (thick < 2)
128 thick = 2;
129
130 int width = thick / 2;
131
132 if (_pointType == Item.POINTTYPE_CIRCLE) {
133 int points = 40;
134
135 double radians = 0.0;
136 int xPoints[] = new int[points];
137 int yPoints[] = new int[xPoints.length];
138
139 for (int i = 0; i < xPoints.length; i++) {
140 xPoints[i] = getX() + (int) (width * Math.cos(radians));
141 yPoints[i] = getY() + (int) (width * Math.sin(radians));
142 radians += (2.0 * Math.PI) / xPoints.length;
143 }
144
145 if (_filled)
146 g.fillPolygon(new Polygon(xPoints, yPoints, xPoints.length));
147 else
148 g.drawPolygon(new Polygon(xPoints, yPoints, xPoints.length));
149 } else {
150 if (_filled)
151 g.fillRect(getX() - width, getY() - width, thick, thick);
152 else
153 g.drawRect(getX() - width, getY() - width, thick, thick);
154 }
155
156 }
157
158 /**
159 * Updates the points of the polygon surrounding this Dot
160 */
161 protected void updatePolygon() {
162 int thick = (int) Math.ceil(getThickness());
163 // Sets a minimum size for the dot
164 thick = Math.max(thick, _MINIMUM_DOT_SIZE);
165
166 int x = getX() - thick / 2;
167 int y = getY() - thick / 2;
168
169 _poly = new Polygon();
170 _poly.addPoint(x - getGravity(), y - getGravity());
171 _poly.addPoint(x + thick + getGravity(), y - getGravity());
172 _poly.addPoint(x + thick + getGravity(), y + thick + getGravity());
173 _poly.addPoint(x - getGravity(), y + thick + getGravity());
174 }
175
176 @Override
177 public Polygon getPolygon() {
178 if (_poly == null)
179 updatePolygon();
180
181 Polygon external = new Polygon(_poly.xpoints, _poly.ypoints,
182 _poly.npoints);
183
184 return external;
185 }
186
187 @Override
188 public Dot copy() {
189 Dot copy = new Dot(getX(), getY(), getID());
190
191 Item.DuplicateItem(this, copy);
192
193 copy.setThickness(getThickness());
194 copy.setPointType(_pointType);
195 copy.useFilledPoints(_filled);
196
197 return copy;
198 }
199
200 @Override
201 public int setSelectionColor() {
202 super.setSelectionColor();
203
204 return Item.DEFAULT_CURSOR;
205 }
206
207 @Override
208 public void setAnnotation(boolean val) {
209 }
210
211 @Override
212 public boolean isAnnotation() {
213 return false;
214 }
215
216 @Override
217 public Item merge(Item merger, int mouseX, int mouseY) {
218 // if the item being merged with is another Dot
219 if (merger instanceof Dot) {
220 Dot dot = (Dot) merger;
221
222 // prevent concurrency issues if removing lines
223 List<Line> lines = new ArrayList<Line>();
224 lines.addAll(dot.getLines());
225
226 for (Line line : lines) {
227 // remove lines that are in common
228 if (getLines().contains(line)) {
229 dot.removeLine(line);
230 removeLine(line);
231 } else {
232 // check for duplicated lines as a result of merging
233 Dot check = (Dot) line.getOppositeEnd(dot);
234 boolean dup = false;
235
236 for (Line l : getLines()) {
237 Item opposite = l.getOppositeEnd(this);
238
239 if (check == opposite) {
240 line.getStartItem().removeLine(line);
241 line.getEndItem().removeLine(line);
242 dup = true;
243 break;
244 }
245 }
246
247 if (!dup)
248 line.replaceEnd(dot, this);
249 }
250 }
251
252 setThickness(dot.getThickness());
253 setColor(dot.getColor());
254 setFillColor(dot.getFillColor());
255
256 return null;
257 }
258
259 if (merger instanceof Text) {
260 merger.setPosition(this.getPosition());
261 List<Line> lines = new LinkedList<Line>();
262 lines.addAll(getLines());
263 for (Line line : lines)
264 line.replaceEnd(this, merger);
265 this.delete();
266 return merger;
267 }
268
269 // if the item being merged with is a Line
270 if (merger instanceof Line) {
271 Line line = (Line) merger;
272 // if this dot is part of the line then keep it, otherwise it
273 // can be removed
274 if (line.getOppositeEnd(this) != null && getLines().contains(line))
275 return merger;
276 else
277 return null;
278 }
279
280 return merger;
281 }
282
283 @Override
284 public String getTypeAndID() {
285 return "P " + getID();
286 }
287
288 @Override
289 public void setFilledHighlight(boolean value) {
290 _filledHighlight = value;
291 }
292
293 @Override
294 public void delete() {
295 super.delete();
296
297 for (Line l : this.getLines())
298 l.delete();
299 }
300
301 @Override
302 public void anchor() {
303 super.anchor();
304 Frame current = getParentOrCurrentFrame();
305 for (Line line : getLines()) {
306 if (line.getID() < 0 && !current.getItems().contains(line)) {
307 line.setID(current.getNextItemID());
308 line.setSelectionColor();
309 // Mike: Why was this line here?
310 // anchor(line);
311 }
312 }
313 }
314
315 @Override
316 public void addLine(Line line) {
317 super.addLine(line);
318 line.setColor(getColor());
319 line.setThickness(getThickness());
320 line.setLinePattern(getLinePattern());
321 }
322
323 @Override
324 public void lineColorChanged(Color c) {
325 if (getColor() != c) {
326 setColor(c);
327 }
328 }
329}
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