forked from wupeixuan/JDKSourceCode1.8
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathRectangle2D.java
More file actions
930 lines (862 loc) · 29.6 KB
/
Rectangle2D.java
File metadata and controls
930 lines (862 loc) · 29.6 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
/*
* Copyright (c) 1997, 2006, Oracle and/or its affiliates. All rights reserved.
* ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*/
package java.awt.geom;
import java.io.Serializable;
/**
* The <code>Rectangle2D</code> class describes a rectangle
* defined by a location {@code (x,y)} and dimension
* {@code (w x h)}.
* <p>
* This class is only the abstract superclass for all objects that
* store a 2D rectangle.
* The actual storage representation of the coordinates is left to
* the subclass.
*
* @author Jim Graham
* @since 1.2
*/
public abstract class Rectangle2D extends RectangularShape {
/**
* The bitmask that indicates that a point lies to the left of
* this <code>Rectangle2D</code>.
* @since 1.2
*/
public static final int OUT_LEFT = 1;
/**
* The bitmask that indicates that a point lies above
* this <code>Rectangle2D</code>.
* @since 1.2
*/
public static final int OUT_TOP = 2;
/**
* The bitmask that indicates that a point lies to the right of
* this <code>Rectangle2D</code>.
* @since 1.2
*/
public static final int OUT_RIGHT = 4;
/**
* The bitmask that indicates that a point lies below
* this <code>Rectangle2D</code>.
* @since 1.2
*/
public static final int OUT_BOTTOM = 8;
/**
* The <code>Float</code> class defines a rectangle specified in float
* coordinates.
* @since 1.2
*/
public static class Float extends Rectangle2D implements Serializable {
/**
* The X coordinate of this <code>Rectangle2D</code>.
* @since 1.2
* @serial
*/
public float x;
/**
* The Y coordinate of this <code>Rectangle2D</code>.
* @since 1.2
* @serial
*/
public float y;
/**
* The width of this <code>Rectangle2D</code>.
* @since 1.2
* @serial
*/
public float width;
/**
* The height of this <code>Rectangle2D</code>.
* @since 1.2
* @serial
*/
public float height;
/**
* Constructs a new <code>Rectangle2D</code>, initialized to
* location (0.0, 0.0) and size (0.0, 0.0).
* @since 1.2
*/
public Float() {
}
/**
* Constructs and initializes a <code>Rectangle2D</code>
* from the specified <code>float</code> coordinates.
*
* @param x the X coordinate of the upper-left corner
* of the newly constructed <code>Rectangle2D</code>
* @param y the Y coordinate of the upper-left corner
* of the newly constructed <code>Rectangle2D</code>
* @param w the width of the newly constructed
* <code>Rectangle2D</code>
* @param h the height of the newly constructed
* <code>Rectangle2D</code>
* @since 1.2
*/
public Float(float x, float y, float w, float h) {
setRect(x, y, w, h);
}
/**
* {@inheritDoc}
* @since 1.2
*/
public double getX() {
return (double) x;
}
/**
* {@inheritDoc}
* @since 1.2
*/
public double getY() {
return (double) y;
}
/**
* {@inheritDoc}
* @since 1.2
*/
public double getWidth() {
return (double) width;
}
/**
* {@inheritDoc}
* @since 1.2
*/
public double getHeight() {
return (double) height;
}
/**
* {@inheritDoc}
* @since 1.2
*/
public boolean isEmpty() {
return (width <= 0.0f) || (height <= 0.0f);
}
/**
* Sets the location and size of this <code>Rectangle2D</code>
* to the specified <code>float</code> values.
*
* @param x the X coordinate of the upper-left corner
* of this <code>Rectangle2D</code>
* @param y the Y coordinate of the upper-left corner
* of this <code>Rectangle2D</code>
* @param w the width of this <code>Rectangle2D</code>
* @param h the height of this <code>Rectangle2D</code>
* @since 1.2
*/
public void setRect(float x, float y, float w, float h) {
this.x = x;
this.y = y;
this.width = w;
this.height = h;
}
/**
* {@inheritDoc}
* @since 1.2
*/
public void setRect(double x, double y, double w, double h) {
this.x = (float) x;
this.y = (float) y;
this.width = (float) w;
this.height = (float) h;
}
/**
* {@inheritDoc}
* @since 1.2
*/
public void setRect(Rectangle2D r) {
this.x = (float) r.getX();
this.y = (float) r.getY();
this.width = (float) r.getWidth();
this.height = (float) r.getHeight();
}
/**
* {@inheritDoc}
* @since 1.2
*/
public int outcode(double x, double y) {
/*
* Note on casts to double below. If the arithmetic of
* x+w or y+h is done in float, then some bits may be
* lost if the binary exponents of x/y and w/h are not
* similar. By converting to double before the addition
* we force the addition to be carried out in double to
* avoid rounding error in the comparison.
*
* See bug 4320890 for problems that this inaccuracy causes.
*/
int out = 0;
if (this.width <= 0) {
out |= OUT_LEFT | OUT_RIGHT;
} else if (x < this.x) {
out |= OUT_LEFT;
} else if (x > this.x + (double) this.width) {
out |= OUT_RIGHT;
}
if (this.height <= 0) {
out |= OUT_TOP | OUT_BOTTOM;
} else if (y < this.y) {
out |= OUT_TOP;
} else if (y > this.y + (double) this.height) {
out |= OUT_BOTTOM;
}
return out;
}
/**
* {@inheritDoc}
* @since 1.2
*/
public Rectangle2D getBounds2D() {
return new Float(x, y, width, height);
}
/**
* {@inheritDoc}
* @since 1.2
*/
public Rectangle2D createIntersection(Rectangle2D r) {
Rectangle2D dest;
if (r instanceof Float) {
dest = new Rectangle2D.Float();
} else {
dest = new Rectangle2D.Double();
}
Rectangle2D.intersect(this, r, dest);
return dest;
}
/**
* {@inheritDoc}
* @since 1.2
*/
public Rectangle2D createUnion(Rectangle2D r) {
Rectangle2D dest;
if (r instanceof Float) {
dest = new Rectangle2D.Float();
} else {
dest = new Rectangle2D.Double();
}
Rectangle2D.union(this, r, dest);
return dest;
}
/**
* Returns the <code>String</code> representation of this
* <code>Rectangle2D</code>.
* @return a <code>String</code> representing this
* <code>Rectangle2D</code>.
* @since 1.2
*/
public String toString() {
return getClass().getName()
+ "[x=" + x +
",y=" + y +
",w=" + width +
",h=" + height + "]";
}
/*
* JDK 1.6 serialVersionUID
*/
private static final long serialVersionUID = 3798716824173675777L;
}
/**
* The <code>Double</code> class defines a rectangle specified in
* double coordinates.
* @since 1.2
*/
public static class Double extends Rectangle2D implements Serializable {
/**
* The X coordinate of this <code>Rectangle2D</code>.
* @since 1.2
* @serial
*/
public double x;
/**
* The Y coordinate of this <code>Rectangle2D</code>.
* @since 1.2
* @serial
*/
public double y;
/**
* The width of this <code>Rectangle2D</code>.
* @since 1.2
* @serial
*/
public double width;
/**
* The height of this <code>Rectangle2D</code>.
* @since 1.2
* @serial
*/
public double height;
/**
* Constructs a new <code>Rectangle2D</code>, initialized to
* location (0, 0) and size (0, 0).
* @since 1.2
*/
public Double() {
}
/**
* Constructs and initializes a <code>Rectangle2D</code>
* from the specified <code>double</code> coordinates.
*
* @param x the X coordinate of the upper-left corner
* of the newly constructed <code>Rectangle2D</code>
* @param y the Y coordinate of the upper-left corner
* of the newly constructed <code>Rectangle2D</code>
* @param w the width of the newly constructed
* <code>Rectangle2D</code>
* @param h the height of the newly constructed
* <code>Rectangle2D</code>
* @since 1.2
*/
public Double(double x, double y, double w, double h) {
setRect(x, y, w, h);
}
/**
* {@inheritDoc}
* @since 1.2
*/
public double getX() {
return x;
}
/**
* {@inheritDoc}
* @since 1.2
*/
public double getY() {
return y;
}
/**
* {@inheritDoc}
* @since 1.2
*/
public double getWidth() {
return width;
}
/**
* {@inheritDoc}
* @since 1.2
*/
public double getHeight() {
return height;
}
/**
* {@inheritDoc}
* @since 1.2
*/
public boolean isEmpty() {
return (width <= 0.0) || (height <= 0.0);
}
/**
* {@inheritDoc}
* @since 1.2
*/
public void setRect(double x, double y, double w, double h) {
this.x = x;
this.y = y;
this.width = w;
this.height = h;
}
/**
* {@inheritDoc}
* @since 1.2
*/
public void setRect(Rectangle2D r) {
this.x = r.getX();
this.y = r.getY();
this.width = r.getWidth();
this.height = r.getHeight();
}
/**
* {@inheritDoc}
* @since 1.2
*/
public int outcode(double x, double y) {
int out = 0;
if (this.width <= 0) {
out |= OUT_LEFT | OUT_RIGHT;
} else if (x < this.x) {
out |= OUT_LEFT;
} else if (x > this.x + this.width) {
out |= OUT_RIGHT;
}
if (this.height <= 0) {
out |= OUT_TOP | OUT_BOTTOM;
} else if (y < this.y) {
out |= OUT_TOP;
} else if (y > this.y + this.height) {
out |= OUT_BOTTOM;
}
return out;
}
/**
* {@inheritDoc}
* @since 1.2
*/
public Rectangle2D getBounds2D() {
return new Double(x, y, width, height);
}
/**
* {@inheritDoc}
* @since 1.2
*/
public Rectangle2D createIntersection(Rectangle2D r) {
Rectangle2D dest = new Rectangle2D.Double();
Rectangle2D.intersect(this, r, dest);
return dest;
}
/**
* {@inheritDoc}
* @since 1.2
*/
public Rectangle2D createUnion(Rectangle2D r) {
Rectangle2D dest = new Rectangle2D.Double();
Rectangle2D.union(this, r, dest);
return dest;
}
/**
* Returns the <code>String</code> representation of this
* <code>Rectangle2D</code>.
* @return a <code>String</code> representing this
* <code>Rectangle2D</code>.
* @since 1.2
*/
public String toString() {
return getClass().getName()
+ "[x=" + x +
",y=" + y +
",w=" + width +
",h=" + height + "]";
}
/*
* JDK 1.6 serialVersionUID
*/
private static final long serialVersionUID = 7771313791441850493L;
}
/**
* This is an abstract class that cannot be instantiated directly.
* Type-specific implementation subclasses are available for
* instantiation and provide a number of formats for storing
* the information necessary to satisfy the various accessor
* methods below.
*
* @see java.awt.geom.Rectangle2D.Float
* @see java.awt.geom.Rectangle2D.Double
* @see java.awt.Rectangle
* @since 1.2
*/
protected Rectangle2D() {
}
/**
* Sets the location and size of this <code>Rectangle2D</code>
* to the specified <code>double</code> values.
*
* @param x the X coordinate of the upper-left corner
* of this <code>Rectangle2D</code>
* @param y the Y coordinate of the upper-left corner
* of this <code>Rectangle2D</code>
* @param w the width of this <code>Rectangle2D</code>
* @param h the height of this <code>Rectangle2D</code>
* @since 1.2
*/
public abstract void setRect(double x, double y, double w, double h);
/**
* Sets this <code>Rectangle2D</code> to be the same as the specified
* <code>Rectangle2D</code>.
* @param r the specified <code>Rectangle2D</code>
* @since 1.2
*/
public void setRect(Rectangle2D r) {
setRect(r.getX(), r.getY(), r.getWidth(), r.getHeight());
}
/**
* Tests if the specified line segment intersects the interior of this
* <code>Rectangle2D</code>.
*
* @param x1 the X coordinate of the start point of the specified
* line segment
* @param y1 the Y coordinate of the start point of the specified
* line segment
* @param x2 the X coordinate of the end point of the specified
* line segment
* @param y2 the Y coordinate of the end point of the specified
* line segment
* @return <code>true</code> if the specified line segment intersects
* the interior of this <code>Rectangle2D</code>; <code>false</code>
* otherwise.
* @since 1.2
*/
public boolean intersectsLine(double x1, double y1, double x2, double y2) {
int out1, out2;
if ((out2 = outcode(x2, y2)) == 0) {
return true;
}
while ((out1 = outcode(x1, y1)) != 0) {
if ((out1 & out2) != 0) {
return false;
}
if ((out1 & (OUT_LEFT | OUT_RIGHT)) != 0) {
double x = getX();
if ((out1 & OUT_RIGHT) != 0) {
x += getWidth();
}
y1 = y1 + (x - x1) * (y2 - y1) / (x2 - x1);
x1 = x;
} else {
double y = getY();
if ((out1 & OUT_BOTTOM) != 0) {
y += getHeight();
}
x1 = x1 + (y - y1) * (x2 - x1) / (y2 - y1);
y1 = y;
}
}
return true;
}
/**
* Tests if the specified line segment intersects the interior of this
* <code>Rectangle2D</code>.
* @param l the specified {@link Line2D} to test for intersection
* with the interior of this <code>Rectangle2D</code>
* @return <code>true</code> if the specified <code>Line2D</code>
* intersects the interior of this <code>Rectangle2D</code>;
* <code>false</code> otherwise.
* @since 1.2
*/
public boolean intersectsLine(Line2D l) {
return intersectsLine(l.getX1(), l.getY1(), l.getX2(), l.getY2());
}
/**
* Determines where the specified coordinates lie with respect
* to this <code>Rectangle2D</code>.
* This method computes a binary OR of the appropriate mask values
* indicating, for each side of this <code>Rectangle2D</code>,
* whether or not the specified coordinates are on the same side
* of the edge as the rest of this <code>Rectangle2D</code>.
* @param x the specified X coordinate
* @param y the specified Y coordinate
* @return the logical OR of all appropriate out codes.
* @see #OUT_LEFT
* @see #OUT_TOP
* @see #OUT_RIGHT
* @see #OUT_BOTTOM
* @since 1.2
*/
public abstract int outcode(double x, double y);
/**
* Determines where the specified {@link Point2D} lies with
* respect to this <code>Rectangle2D</code>.
* This method computes a binary OR of the appropriate mask values
* indicating, for each side of this <code>Rectangle2D</code>,
* whether or not the specified <code>Point2D</code> is on the same
* side of the edge as the rest of this <code>Rectangle2D</code>.
* @param p the specified <code>Point2D</code>
* @return the logical OR of all appropriate out codes.
* @see #OUT_LEFT
* @see #OUT_TOP
* @see #OUT_RIGHT
* @see #OUT_BOTTOM
* @since 1.2
*/
public int outcode(Point2D p) {
return outcode(p.getX(), p.getY());
}
/**
* Sets the location and size of the outer bounds of this
* <code>Rectangle2D</code> to the specified rectangular values.
*
* @param x the X coordinate of the upper-left corner
* of this <code>Rectangle2D</code>
* @param y the Y coordinate of the upper-left corner
* of this <code>Rectangle2D</code>
* @param w the width of this <code>Rectangle2D</code>
* @param h the height of this <code>Rectangle2D</code>
* @since 1.2
*/
public void setFrame(double x, double y, double w, double h) {
setRect(x, y, w, h);
}
/**
* {@inheritDoc}
* @since 1.2
*/
public Rectangle2D getBounds2D() {
return (Rectangle2D) clone();
}
/**
* {@inheritDoc}
* @since 1.2
*/
public boolean contains(double x, double y) {
double x0 = getX();
double y0 = getY();
return (x >= x0 &&
y >= y0 &&
x < x0 + getWidth() &&
y < y0 + getHeight());
}
/**
* {@inheritDoc}
* @since 1.2
*/
public boolean intersects(double x, double y, double w, double h) {
if (isEmpty() || w <= 0 || h <= 0) {
return false;
}
double x0 = getX();
double y0 = getY();
return (x + w > x0 &&
y + h > y0 &&
x < x0 + getWidth() &&
y < y0 + getHeight());
}
/**
* {@inheritDoc}
* @since 1.2
*/
public boolean contains(double x, double y, double w, double h) {
if (isEmpty() || w <= 0 || h <= 0) {
return false;
}
double x0 = getX();
double y0 = getY();
return (x >= x0 &&
y >= y0 &&
(x + w) <= x0 + getWidth() &&
(y + h) <= y0 + getHeight());
}
/**
* Returns a new <code>Rectangle2D</code> object representing the
* intersection of this <code>Rectangle2D</code> with the specified
* <code>Rectangle2D</code>.
* @param r the <code>Rectangle2D</code> to be intersected with
* this <code>Rectangle2D</code>
* @return the largest <code>Rectangle2D</code> contained in both
* the specified <code>Rectangle2D</code> and in this
* <code>Rectangle2D</code>.
* @since 1.2
*/
public abstract Rectangle2D createIntersection(Rectangle2D r);
/**
* Intersects the pair of specified source <code>Rectangle2D</code>
* objects and puts the result into the specified destination
* <code>Rectangle2D</code> object. One of the source rectangles
* can also be the destination to avoid creating a third Rectangle2D
* object, but in this case the original points of this source
* rectangle will be overwritten by this method.
* @param src1 the first of a pair of <code>Rectangle2D</code>
* objects to be intersected with each other
* @param src2 the second of a pair of <code>Rectangle2D</code>
* objects to be intersected with each other
* @param dest the <code>Rectangle2D</code> that holds the
* results of the intersection of <code>src1</code> and
* <code>src2</code>
* @since 1.2
*/
public static void intersect(Rectangle2D src1,
Rectangle2D src2,
Rectangle2D dest) {
double x1 = Math.max(src1.getMinX(), src2.getMinX());
double y1 = Math.max(src1.getMinY(), src2.getMinY());
double x2 = Math.min(src1.getMaxX(), src2.getMaxX());
double y2 = Math.min(src1.getMaxY(), src2.getMaxY());
dest.setFrame(x1, y1, x2-x1, y2-y1);
}
/**
* Returns a new <code>Rectangle2D</code> object representing the
* union of this <code>Rectangle2D</code> with the specified
* <code>Rectangle2D</code>.
* @param r the <code>Rectangle2D</code> to be combined with
* this <code>Rectangle2D</code>
* @return the smallest <code>Rectangle2D</code> containing both
* the specified <code>Rectangle2D</code> and this
* <code>Rectangle2D</code>.
* @since 1.2
*/
public abstract Rectangle2D createUnion(Rectangle2D r);
/**
* Unions the pair of source <code>Rectangle2D</code> objects
* and puts the result into the specified destination
* <code>Rectangle2D</code> object. One of the source rectangles
* can also be the destination to avoid creating a third Rectangle2D
* object, but in this case the original points of this source
* rectangle will be overwritten by this method.
* @param src1 the first of a pair of <code>Rectangle2D</code>
* objects to be combined with each other
* @param src2 the second of a pair of <code>Rectangle2D</code>
* objects to be combined with each other
* @param dest the <code>Rectangle2D</code> that holds the
* results of the union of <code>src1</code> and
* <code>src2</code>
* @since 1.2
*/
public static void union(Rectangle2D src1,
Rectangle2D src2,
Rectangle2D dest) {
double x1 = Math.min(src1.getMinX(), src2.getMinX());
double y1 = Math.min(src1.getMinY(), src2.getMinY());
double x2 = Math.max(src1.getMaxX(), src2.getMaxX());
double y2 = Math.max(src1.getMaxY(), src2.getMaxY());
dest.setFrameFromDiagonal(x1, y1, x2, y2);
}
/**
* Adds a point, specified by the double precision arguments
* <code>newx</code> and <code>newy</code>, to this
* <code>Rectangle2D</code>. The resulting <code>Rectangle2D</code>
* is the smallest <code>Rectangle2D</code> that
* contains both the original <code>Rectangle2D</code> and the
* specified point.
* <p>
* After adding a point, a call to <code>contains</code> with the
* added point as an argument does not necessarily return
* <code>true</code>. The <code>contains</code> method does not
* return <code>true</code> for points on the right or bottom
* edges of a rectangle. Therefore, if the added point falls on
* the left or bottom edge of the enlarged rectangle,
* <code>contains</code> returns <code>false</code> for that point.
* @param newx the X coordinate of the new point
* @param newy the Y coordinate of the new point
* @since 1.2
*/
public void add(double newx, double newy) {
double x1 = Math.min(getMinX(), newx);
double x2 = Math.max(getMaxX(), newx);
double y1 = Math.min(getMinY(), newy);
double y2 = Math.max(getMaxY(), newy);
setRect(x1, y1, x2 - x1, y2 - y1);
}
/**
* Adds the <code>Point2D</code> object <code>pt</code> to this
* <code>Rectangle2D</code>.
* The resulting <code>Rectangle2D</code> is the smallest
* <code>Rectangle2D</code> that contains both the original
* <code>Rectangle2D</code> and the specified <code>Point2D</code>.
* <p>
* After adding a point, a call to <code>contains</code> with the
* added point as an argument does not necessarily return
* <code>true</code>. The <code>contains</code>
* method does not return <code>true</code> for points on the right
* or bottom edges of a rectangle. Therefore, if the added point falls
* on the left or bottom edge of the enlarged rectangle,
* <code>contains</code> returns <code>false</code> for that point.
* @param pt the new <code>Point2D</code> to add to this
* <code>Rectangle2D</code>.
* @since 1.2
*/
public void add(Point2D pt) {
add(pt.getX(), pt.getY());
}
/**
* Adds a <code>Rectangle2D</code> object to this
* <code>Rectangle2D</code>. The resulting <code>Rectangle2D</code>
* is the union of the two <code>Rectangle2D</code> objects.
* @param r the <code>Rectangle2D</code> to add to this
* <code>Rectangle2D</code>.
* @since 1.2
*/
public void add(Rectangle2D r) {
double x1 = Math.min(getMinX(), r.getMinX());
double x2 = Math.max(getMaxX(), r.getMaxX());
double y1 = Math.min(getMinY(), r.getMinY());
double y2 = Math.max(getMaxY(), r.getMaxY());
setRect(x1, y1, x2 - x1, y2 - y1);
}
/**
* Returns an iteration object that defines the boundary of this
* <code>Rectangle2D</code>.
* The iterator for this class is multi-threaded safe, which means
* that this <code>Rectangle2D</code> class guarantees that
* modifications to the geometry of this <code>Rectangle2D</code>
* object do not affect any iterations of that geometry that
* are already in process.
* @param at an optional <code>AffineTransform</code> to be applied to
* the coordinates as they are returned in the iteration, or
* <code>null</code> if untransformed coordinates are desired
* @return the <code>PathIterator</code> object that returns the
* geometry of the outline of this
* <code>Rectangle2D</code>, one segment at a time.
* @since 1.2
*/
public PathIterator getPathIterator(AffineTransform at) {
return new RectIterator(this, at);
}
/**
* Returns an iteration object that defines the boundary of the
* flattened <code>Rectangle2D</code>. Since rectangles are already
* flat, the <code>flatness</code> parameter is ignored.
* The iterator for this class is multi-threaded safe, which means
* that this <code>Rectangle2D</code> class guarantees that
* modifications to the geometry of this <code>Rectangle2D</code>
* object do not affect any iterations of that geometry that
* are already in process.
* @param at an optional <code>AffineTransform</code> to be applied to
* the coordinates as they are returned in the iteration, or
* <code>null</code> if untransformed coordinates are desired
* @param flatness the maximum distance that the line segments used to
* approximate the curved segments are allowed to deviate from any
* point on the original curve. Since rectangles are already flat,
* the <code>flatness</code> parameter is ignored.
* @return the <code>PathIterator</code> object that returns the
* geometry of the outline of this
* <code>Rectangle2D</code>, one segment at a time.
* @since 1.2
*/
public PathIterator getPathIterator(AffineTransform at, double flatness) {
return new RectIterator(this, at);
}
/**
* Returns the hashcode for this <code>Rectangle2D</code>.
* @return the hashcode for this <code>Rectangle2D</code>.
* @since 1.2
*/
public int hashCode() {
long bits = java.lang.Double.doubleToLongBits(getX());
bits += java.lang.Double.doubleToLongBits(getY()) * 37;
bits += java.lang.Double.doubleToLongBits(getWidth()) * 43;
bits += java.lang.Double.doubleToLongBits(getHeight()) * 47;
return (((int) bits) ^ ((int) (bits >> 32)));
}
/**
* Determines whether or not the specified <code>Object</code> is
* equal to this <code>Rectangle2D</code>. The specified
* <code>Object</code> is equal to this <code>Rectangle2D</code>
* if it is an instance of <code>Rectangle2D</code> and if its
* location and size are the same as this <code>Rectangle2D</code>.
* @param obj an <code>Object</code> to be compared with this
* <code>Rectangle2D</code>.
* @return <code>true</code> if <code>obj</code> is an instance
* of <code>Rectangle2D</code> and has
* the same values; <code>false</code> otherwise.
* @since 1.2
*/
public boolean equals(Object obj) {
if (obj == this) {
return true;
}
if (obj instanceof Rectangle2D) {
Rectangle2D r2d = (Rectangle2D) obj;
return ((getX() == r2d.getX()) &&
(getY() == r2d.getY()) &&
(getWidth() == r2d.getWidth()) &&
(getHeight() == r2d.getHeight()));
}
return false;
}
}