Flutter Engine
The Flutter Engine
rect_unittests.cc
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1// Copyright 2013 The Flutter Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#include "gtest/gtest.h"
6
7#include "flutter/impeller/geometry/rect.h"
8
9#include "flutter/impeller/geometry/geometry_asserts.h"
10
11namespace impeller {
12namespace testing {
13
14TEST(RectTest, RectEmptyDeclaration) {
15 Rect rect;
16
17 EXPECT_EQ(rect.GetLeft(), 0.0f);
18 EXPECT_EQ(rect.GetTop(), 0.0f);
19 EXPECT_EQ(rect.GetRight(), 0.0f);
20 EXPECT_EQ(rect.GetBottom(), 0.0f);
21 EXPECT_EQ(rect.GetX(), 0.0f);
22 EXPECT_EQ(rect.GetY(), 0.0f);
23 EXPECT_EQ(rect.GetWidth(), 0.0f);
24 EXPECT_EQ(rect.GetHeight(), 0.0f);
25 EXPECT_TRUE(rect.IsEmpty());
26 EXPECT_TRUE(rect.IsFinite());
27}
28
29TEST(RectTest, IRectEmptyDeclaration) {
30 IRect rect;
31
32 EXPECT_EQ(rect.GetLeft(), 0);
33 EXPECT_EQ(rect.GetTop(), 0);
34 EXPECT_EQ(rect.GetRight(), 0);
35 EXPECT_EQ(rect.GetBottom(), 0);
36 EXPECT_EQ(rect.GetX(), 0);
37 EXPECT_EQ(rect.GetY(), 0);
38 EXPECT_EQ(rect.GetWidth(), 0);
39 EXPECT_EQ(rect.GetHeight(), 0);
40 EXPECT_TRUE(rect.IsEmpty());
41 // EXPECT_TRUE(rect.IsFinite()); // should fail to compile
42}
43
44TEST(RectTest, RectDefaultConstructor) {
45 Rect rect = Rect();
46
47 EXPECT_EQ(rect.GetLeft(), 0.0f);
48 EXPECT_EQ(rect.GetTop(), 0.0f);
49 EXPECT_EQ(rect.GetRight(), 0.0f);
50 EXPECT_EQ(rect.GetBottom(), 0.0f);
51 EXPECT_EQ(rect.GetX(), 0.0f);
52 EXPECT_EQ(rect.GetY(), 0.0f);
53 EXPECT_EQ(rect.GetWidth(), 0.0f);
54 EXPECT_EQ(rect.GetHeight(), 0.0f);
55 EXPECT_TRUE(rect.IsEmpty());
56 EXPECT_TRUE(rect.IsFinite());
57}
58
59TEST(RectTest, IRectDefaultConstructor) {
60 IRect rect = IRect();
61
62 EXPECT_EQ(rect.GetLeft(), 0);
63 EXPECT_EQ(rect.GetTop(), 0);
64 EXPECT_EQ(rect.GetRight(), 0);
65 EXPECT_EQ(rect.GetBottom(), 0);
66 EXPECT_EQ(rect.GetX(), 0);
67 EXPECT_EQ(rect.GetY(), 0);
68 EXPECT_EQ(rect.GetWidth(), 0);
69 EXPECT_EQ(rect.GetHeight(), 0);
70 EXPECT_TRUE(rect.IsEmpty());
71}
72
73TEST(RectTest, RectSimpleLTRB) {
74 // Using fractional-power-of-2 friendly values for equality tests
75 Rect rect = Rect::MakeLTRB(5.125f, 10.25f, 20.625f, 25.375f);
76
77 EXPECT_EQ(rect.GetLeft(), 5.125f);
78 EXPECT_EQ(rect.GetTop(), 10.25f);
79 EXPECT_EQ(rect.GetRight(), 20.625f);
80 EXPECT_EQ(rect.GetBottom(), 25.375f);
81 EXPECT_EQ(rect.GetX(), 5.125f);
82 EXPECT_EQ(rect.GetY(), 10.25f);
83 EXPECT_EQ(rect.GetWidth(), 15.5f);
84 EXPECT_EQ(rect.GetHeight(), 15.125f);
85 EXPECT_FALSE(rect.IsEmpty());
86 EXPECT_TRUE(rect.IsFinite());
87}
88
89TEST(RectTest, IRectSimpleLTRB) {
90 IRect rect = IRect::MakeLTRB(5, 10, 20, 25);
91
92 EXPECT_EQ(rect.GetLeft(), 5);
93 EXPECT_EQ(rect.GetTop(), 10);
94 EXPECT_EQ(rect.GetRight(), 20);
95 EXPECT_EQ(rect.GetBottom(), 25);
96 EXPECT_EQ(rect.GetX(), 5);
97 EXPECT_EQ(rect.GetY(), 10);
98 EXPECT_EQ(rect.GetWidth(), 15);
99 EXPECT_EQ(rect.GetHeight(), 15);
100 EXPECT_FALSE(rect.IsEmpty());
101}
102
103TEST(RectTest, RectSimpleXYWH) {
104 // Using fractional-power-of-2 friendly values for equality tests
105 Rect rect = Rect::MakeXYWH(5.125f, 10.25f, 15.5f, 15.125f);
106
107 EXPECT_EQ(rect.GetLeft(), 5.125f);
108 EXPECT_EQ(rect.GetTop(), 10.25f);
109 EXPECT_EQ(rect.GetRight(), 20.625f);
110 EXPECT_EQ(rect.GetBottom(), 25.375f);
111 EXPECT_EQ(rect.GetX(), 5.125f);
112 EXPECT_EQ(rect.GetY(), 10.25f);
113 EXPECT_EQ(rect.GetWidth(), 15.5f);
114 EXPECT_EQ(rect.GetHeight(), 15.125f);
115 EXPECT_FALSE(rect.IsEmpty());
116 EXPECT_TRUE(rect.IsFinite());
117}
118
119TEST(RectTest, IRectSimpleXYWH) {
120 IRect rect = IRect::MakeXYWH(5, 10, 15, 16);
121
122 EXPECT_EQ(rect.GetLeft(), 5);
123 EXPECT_EQ(rect.GetTop(), 10);
124 EXPECT_EQ(rect.GetRight(), 20);
125 EXPECT_EQ(rect.GetBottom(), 26);
126 EXPECT_EQ(rect.GetX(), 5);
127 EXPECT_EQ(rect.GetY(), 10);
128 EXPECT_EQ(rect.GetWidth(), 15);
129 EXPECT_EQ(rect.GetHeight(), 16);
130 EXPECT_FALSE(rect.IsEmpty());
131}
132
133TEST(RectTest, RectOverflowXYWH) {
134 auto min = std::numeric_limits<Scalar>::lowest();
135 auto max = std::numeric_limits<Scalar>::max();
136 auto inf = std::numeric_limits<Scalar>::infinity();
137
138 // 8 cases:
139 // finite X, max W
140 // max X, max W
141 // finite Y, max H
142 // max Y, max H
143 // finite X, min W
144 // min X, min W
145 // finite Y, min H
146 // min Y, min H
147
148 // a small finite value added to a max value will remain max
149 // a very large finite value (like max) added to max will go to infinity
150
151 {
152 Rect rect = Rect::MakeXYWH(5.0, 10.0f, max, 15.0f);
153
154 EXPECT_EQ(rect.GetLeft(), 5.0f);
155 EXPECT_EQ(rect.GetTop(), 10.0f);
156 EXPECT_EQ(rect.GetRight(), max);
157 EXPECT_EQ(rect.GetBottom(), 25.0f);
158 EXPECT_EQ(rect.GetX(), 5.0f);
159 EXPECT_EQ(rect.GetY(), 10.0f);
160 EXPECT_EQ(rect.GetWidth(), max);
161 EXPECT_EQ(rect.GetHeight(), 15.0f);
162 EXPECT_FALSE(rect.IsEmpty());
163 EXPECT_TRUE(rect.IsFinite());
164 }
165
166 {
167 Rect rect = Rect::MakeXYWH(max, 10.0f, max, 15.0f);
168
169 EXPECT_EQ(rect.GetLeft(), max);
170 EXPECT_EQ(rect.GetTop(), 10.0f);
171 EXPECT_EQ(rect.GetRight(), inf);
172 EXPECT_EQ(rect.GetBottom(), 25.0f);
173 EXPECT_EQ(rect.GetX(), max);
174 EXPECT_EQ(rect.GetY(), 10.0f);
175 EXPECT_EQ(rect.GetWidth(), inf);
176 EXPECT_EQ(rect.GetHeight(), 15.0f);
177 EXPECT_FALSE(rect.IsEmpty());
178 EXPECT_FALSE(rect.IsFinite());
179 }
180
181 {
182 Rect rect = Rect::MakeXYWH(5.0f, 10.0f, 20.0f, max);
183
184 EXPECT_EQ(rect.GetLeft(), 5.0f);
185 EXPECT_EQ(rect.GetTop(), 10.0f);
186 EXPECT_EQ(rect.GetRight(), 25.0f);
187 EXPECT_EQ(rect.GetBottom(), max);
188 EXPECT_EQ(rect.GetX(), 5.0f);
189 EXPECT_EQ(rect.GetY(), 10.0f);
190 EXPECT_EQ(rect.GetWidth(), 20.0f);
191 EXPECT_EQ(rect.GetHeight(), max);
192 EXPECT_FALSE(rect.IsEmpty());
193 EXPECT_TRUE(rect.IsFinite());
194 }
195
196 {
197 Rect rect = Rect::MakeXYWH(5.0f, max, 20.0f, max);
198
199 EXPECT_EQ(rect.GetLeft(), 5.0f);
200 EXPECT_EQ(rect.GetTop(), max);
201 EXPECT_EQ(rect.GetRight(), 25.0f);
202 EXPECT_EQ(rect.GetBottom(), inf);
203 EXPECT_EQ(rect.GetX(), 5.0f);
204 EXPECT_EQ(rect.GetY(), max);
205 EXPECT_EQ(rect.GetWidth(), 20.0f);
206 EXPECT_EQ(rect.GetHeight(), inf);
207 EXPECT_FALSE(rect.IsEmpty());
208 EXPECT_FALSE(rect.IsFinite());
209 }
210
211 {
212 Rect rect = Rect::MakeXYWH(5.0, 10.0f, min, 15.0f);
213
214 EXPECT_EQ(rect.GetLeft(), 5.0f);
215 EXPECT_EQ(rect.GetTop(), 10.0f);
216 EXPECT_EQ(rect.GetRight(), min);
217 EXPECT_EQ(rect.GetBottom(), 25.0f);
218 EXPECT_EQ(rect.GetX(), 5.0f);
219 EXPECT_EQ(rect.GetY(), 10.0f);
220 EXPECT_EQ(rect.GetWidth(), min);
221 EXPECT_EQ(rect.GetHeight(), 15.0f);
222 EXPECT_TRUE(rect.IsEmpty());
223 EXPECT_TRUE(rect.IsFinite());
224 }
225
226 {
227 Rect rect = Rect::MakeXYWH(min, 10.0f, min, 15.0f);
228
229 EXPECT_EQ(rect.GetLeft(), min);
230 EXPECT_EQ(rect.GetTop(), 10.0f);
231 EXPECT_EQ(rect.GetRight(), -inf);
232 EXPECT_EQ(rect.GetBottom(), 25.0f);
233 EXPECT_EQ(rect.GetX(), min);
234 EXPECT_EQ(rect.GetY(), 10.0f);
235 EXPECT_EQ(rect.GetWidth(), -inf);
236 EXPECT_EQ(rect.GetHeight(), 15.0f);
237 EXPECT_TRUE(rect.IsEmpty());
238 EXPECT_FALSE(rect.IsFinite());
239 }
240
241 {
242 Rect rect = Rect::MakeXYWH(5.0f, 10.0f, 20.0f, min);
243
244 EXPECT_EQ(rect.GetLeft(), 5.0f);
245 EXPECT_EQ(rect.GetTop(), 10.0f);
246 EXPECT_EQ(rect.GetRight(), 25.0f);
247 EXPECT_EQ(rect.GetBottom(), min);
248 EXPECT_EQ(rect.GetX(), 5.0f);
249 EXPECT_EQ(rect.GetY(), 10.0f);
250 EXPECT_EQ(rect.GetWidth(), 20.0f);
251 EXPECT_EQ(rect.GetHeight(), min);
252 EXPECT_TRUE(rect.IsEmpty());
253 EXPECT_TRUE(rect.IsFinite());
254 }
255
256 {
257 Rect rect = Rect::MakeXYWH(5.0f, min, 20.0f, min);
258
259 EXPECT_EQ(rect.GetLeft(), 5.0f);
260 EXPECT_EQ(rect.GetTop(), min);
261 EXPECT_EQ(rect.GetRight(), 25.0f);
262 EXPECT_EQ(rect.GetBottom(), -inf);
263 EXPECT_EQ(rect.GetX(), 5.0f);
264 EXPECT_EQ(rect.GetY(), min);
265 EXPECT_EQ(rect.GetWidth(), 20.0f);
266 EXPECT_EQ(rect.GetHeight(), -inf);
267 EXPECT_TRUE(rect.IsEmpty());
268 EXPECT_FALSE(rect.IsFinite());
269 }
270}
271
272TEST(RectTest, IRectOverflowXYWH) {
273 auto min = std::numeric_limits<int64_t>::min();
274 auto max = std::numeric_limits<int64_t>::max();
275
276 // 4 cases
277 // x near max, positive w takes it past max
278 // x near min, negative w takes it below min
279 // y near max, positive h takes it past max
280 // y near min, negative h takes it below min
281
282 {
283 IRect rect = IRect::MakeXYWH(max - 5, 10, 10, 16);
284
285 EXPECT_EQ(rect.GetLeft(), max - 5);
286 EXPECT_EQ(rect.GetTop(), 10);
287 EXPECT_EQ(rect.GetRight(), max);
288 EXPECT_EQ(rect.GetBottom(), 26);
289 EXPECT_EQ(rect.GetX(), max - 5);
290 EXPECT_EQ(rect.GetY(), 10);
291 EXPECT_EQ(rect.GetWidth(), 5);
292 EXPECT_EQ(rect.GetHeight(), 16);
293 EXPECT_FALSE(rect.IsEmpty());
294 }
295
296 {
297 IRect rect = IRect::MakeXYWH(min + 5, 10, -10, 16);
298
299 EXPECT_EQ(rect.GetLeft(), min + 5);
300 EXPECT_EQ(rect.GetTop(), 10);
301 EXPECT_EQ(rect.GetRight(), min);
302 EXPECT_EQ(rect.GetBottom(), 26);
303 EXPECT_EQ(rect.GetX(), min + 5);
304 EXPECT_EQ(rect.GetY(), 10);
305 EXPECT_EQ(rect.GetWidth(), -5);
306 EXPECT_EQ(rect.GetHeight(), 16);
307 EXPECT_TRUE(rect.IsEmpty());
308 }
309
310 {
311 IRect rect = IRect::MakeXYWH(5, max - 10, 10, 16);
312
313 EXPECT_EQ(rect.GetLeft(), 5);
314 EXPECT_EQ(rect.GetTop(), max - 10);
315 EXPECT_EQ(rect.GetRight(), 15);
316 EXPECT_EQ(rect.GetBottom(), max);
317 EXPECT_EQ(rect.GetX(), 5);
318 EXPECT_EQ(rect.GetY(), max - 10);
319 EXPECT_EQ(rect.GetWidth(), 10);
320 EXPECT_EQ(rect.GetHeight(), 10);
321 EXPECT_FALSE(rect.IsEmpty());
322 }
323
324 {
325 IRect rect = IRect::MakeXYWH(5, min + 10, 10, -16);
326
327 EXPECT_EQ(rect.GetLeft(), 5);
328 EXPECT_EQ(rect.GetTop(), min + 10);
329 EXPECT_EQ(rect.GetRight(), 15);
330 EXPECT_EQ(rect.GetBottom(), min);
331 EXPECT_EQ(rect.GetX(), 5);
332 EXPECT_EQ(rect.GetY(), min + 10);
333 EXPECT_EQ(rect.GetWidth(), 10);
334 EXPECT_EQ(rect.GetHeight(), -10);
335 EXPECT_TRUE(rect.IsEmpty());
336 }
337}
338
339TEST(RectTest, RectOverflowLTRB) {
340 auto min = std::numeric_limits<Scalar>::lowest();
341 auto max = std::numeric_limits<Scalar>::max();
342 auto inf = std::numeric_limits<Scalar>::infinity();
343
344 // 8 cases:
345 // finite negative X, max W
346 // ~min X, ~max W
347 // finite negative Y, max H
348 // ~min Y, ~max H
349 // finite positive X, min W
350 // ~min X, ~min W
351 // finite positive Y, min H
352 // ~min Y, ~min H
353
354 // a small finite value subtracted from a max value will remain max
355 // a very large finite value (like min) subtracted from max will go to inf
356
357 {
358 Rect rect = Rect::MakeLTRB(-5.0f, 10.0f, max, 25.0f);
359
360 EXPECT_EQ(rect.GetLeft(), -5.0f);
361 EXPECT_EQ(rect.GetTop(), 10.0f);
362 EXPECT_EQ(rect.GetRight(), max);
363 EXPECT_EQ(rect.GetBottom(), 25.0f);
364 EXPECT_EQ(rect.GetX(), -5.0f);
365 EXPECT_EQ(rect.GetY(), 10.0f);
366 EXPECT_EQ(rect.GetWidth(), max);
367 EXPECT_EQ(rect.GetHeight(), 15.0f);
368 EXPECT_FALSE(rect.IsEmpty());
369 EXPECT_TRUE(rect.IsFinite());
370 }
371
372 {
373 Rect rect = Rect::MakeLTRB(min + 5.0f, 10.0f, max - 5.0f, 25.0f);
374
375 EXPECT_EQ(rect.GetLeft(), min + 5.0f);
376 EXPECT_EQ(rect.GetTop(), 10.0f);
377 EXPECT_EQ(rect.GetRight(), max - 5.0f);
378 EXPECT_EQ(rect.GetBottom(), 25.0f);
379 EXPECT_EQ(rect.GetX(), min + 5.0f);
380 EXPECT_EQ(rect.GetY(), 10.0f);
381 EXPECT_EQ(rect.GetWidth(), inf);
382 EXPECT_EQ(rect.GetHeight(), 15.0f);
383 EXPECT_FALSE(rect.IsEmpty());
384 EXPECT_TRUE(rect.IsFinite());
385 }
386
387 {
388 Rect rect = Rect::MakeLTRB(5.0f, -10.0f, 20.0f, max);
389
390 EXPECT_EQ(rect.GetLeft(), 5.0f);
391 EXPECT_EQ(rect.GetTop(), -10.0f);
392 EXPECT_EQ(rect.GetRight(), 20.0f);
393 EXPECT_EQ(rect.GetBottom(), max);
394 EXPECT_EQ(rect.GetX(), 5.0f);
395 EXPECT_EQ(rect.GetY(), -10.0f);
396 EXPECT_EQ(rect.GetWidth(), 15.0f);
397 EXPECT_EQ(rect.GetHeight(), max);
398 EXPECT_FALSE(rect.IsEmpty());
399 EXPECT_TRUE(rect.IsFinite());
400 }
401
402 {
403 Rect rect = Rect::MakeLTRB(5.0f, min + 10.0f, 20.0f, max - 15.0f);
404
405 EXPECT_EQ(rect.GetLeft(), 5.0f);
406 EXPECT_EQ(rect.GetTop(), min + 10.0f);
407 EXPECT_EQ(rect.GetRight(), 20.0f);
408 EXPECT_EQ(rect.GetBottom(), max - 15.0f);
409 EXPECT_EQ(rect.GetX(), 5.0f);
410 EXPECT_EQ(rect.GetY(), min + 10.0f);
411 EXPECT_EQ(rect.GetWidth(), 15.0f);
412 EXPECT_EQ(rect.GetHeight(), inf);
413 EXPECT_FALSE(rect.IsEmpty());
414 EXPECT_TRUE(rect.IsFinite());
415 }
416
417 {
418 Rect rect = Rect::MakeLTRB(5.0f, 10.0f, min, 25.0f);
419
420 EXPECT_EQ(rect.GetLeft(), 5.0f);
421 EXPECT_EQ(rect.GetTop(), 10.0f);
422 EXPECT_EQ(rect.GetRight(), min);
423 EXPECT_EQ(rect.GetBottom(), 25.0f);
424 EXPECT_EQ(rect.GetX(), 5.0f);
425 EXPECT_EQ(rect.GetY(), 10.0f);
426 EXPECT_EQ(rect.GetWidth(), min);
427 EXPECT_EQ(rect.GetHeight(), 15.0f);
428 EXPECT_TRUE(rect.IsEmpty());
429 EXPECT_TRUE(rect.IsFinite());
430 }
431
432 {
433 Rect rect = Rect::MakeLTRB(max - 5.0f, 10.0f, min + 10.0f, 25.0f);
434
435 EXPECT_EQ(rect.GetLeft(), max - 5.0f);
436 EXPECT_EQ(rect.GetTop(), 10.0f);
437 EXPECT_EQ(rect.GetRight(), min + 10.0f);
438 EXPECT_EQ(rect.GetBottom(), 25.0f);
439 EXPECT_EQ(rect.GetX(), max - 5.0f);
440 EXPECT_EQ(rect.GetY(), 10.0f);
441 EXPECT_EQ(rect.GetWidth(), -inf);
442 EXPECT_EQ(rect.GetHeight(), 15.0f);
443 EXPECT_TRUE(rect.IsEmpty());
444 EXPECT_TRUE(rect.IsFinite());
445 }
446
447 {
448 Rect rect = Rect::MakeLTRB(5.0f, 10.0f, 20.0f, min);
449
450 EXPECT_EQ(rect.GetLeft(), 5.0f);
451 EXPECT_EQ(rect.GetTop(), 10.0f);
452 EXPECT_EQ(rect.GetRight(), 20.0f);
453 EXPECT_EQ(rect.GetBottom(), min);
454 EXPECT_EQ(rect.GetX(), 5.0f);
455 EXPECT_EQ(rect.GetY(), 10.0f);
456 EXPECT_EQ(rect.GetWidth(), 15.0f);
457 EXPECT_EQ(rect.GetHeight(), min);
458 EXPECT_TRUE(rect.IsEmpty());
459 EXPECT_TRUE(rect.IsFinite());
460 }
461
462 {
463 Rect rect = Rect::MakeLTRB(5.0f, max - 5.0f, 20.0f, min + 10.0f);
464
465 EXPECT_EQ(rect.GetLeft(), 5.0f);
466 EXPECT_EQ(rect.GetTop(), max - 5.0f);
467 EXPECT_EQ(rect.GetRight(), 20.0f);
468 EXPECT_EQ(rect.GetBottom(), min + 10.0f);
469 EXPECT_EQ(rect.GetX(), 5.0f);
470 EXPECT_EQ(rect.GetY(), max - 5.0f);
471 EXPECT_EQ(rect.GetWidth(), 15.0f);
472 EXPECT_EQ(rect.GetHeight(), -inf);
473 EXPECT_TRUE(rect.IsEmpty());
474 EXPECT_TRUE(rect.IsFinite());
475 }
476}
477
478TEST(RectTest, IRectOverflowLTRB) {
479 auto min = std::numeric_limits<int64_t>::min();
480 auto max = std::numeric_limits<int64_t>::max();
481
482 // 4 cases
483 // negative l, r near max takes width past max
484 // positive l, r near min takes width below min
485 // negative t, b near max takes width past max
486 // positive t, b near min takes width below min
487
488 {
489 IRect rect = IRect::MakeLTRB(-10, 10, max - 5, 26);
490
491 EXPECT_EQ(rect.GetLeft(), -10);
492 EXPECT_EQ(rect.GetTop(), 10);
493 EXPECT_EQ(rect.GetRight(), max - 5);
494 EXPECT_EQ(rect.GetBottom(), 26);
495 EXPECT_EQ(rect.GetX(), -10);
496 EXPECT_EQ(rect.GetY(), 10);
497 EXPECT_EQ(rect.GetWidth(), max);
498 EXPECT_EQ(rect.GetHeight(), 16);
499 EXPECT_FALSE(rect.IsEmpty());
500 }
501
502 {
503 IRect rect = IRect::MakeLTRB(10, 10, min + 5, 26);
504
505 EXPECT_EQ(rect.GetLeft(), 10);
506 EXPECT_EQ(rect.GetTop(), 10);
507 EXPECT_EQ(rect.GetRight(), min + 5);
508 EXPECT_EQ(rect.GetBottom(), 26);
509 EXPECT_EQ(rect.GetX(), 10);
510 EXPECT_EQ(rect.GetY(), 10);
511 EXPECT_EQ(rect.GetWidth(), min);
512 EXPECT_EQ(rect.GetHeight(), 16);
513 EXPECT_TRUE(rect.IsEmpty());
514 }
515
516 {
517 IRect rect = IRect::MakeLTRB(5, -10, 15, max - 5);
518
519 EXPECT_EQ(rect.GetLeft(), 5);
520 EXPECT_EQ(rect.GetTop(), -10);
521 EXPECT_EQ(rect.GetRight(), 15);
522 EXPECT_EQ(rect.GetBottom(), max - 5);
523 EXPECT_EQ(rect.GetX(), 5);
524 EXPECT_EQ(rect.GetY(), -10);
525 EXPECT_EQ(rect.GetWidth(), 10);
526 EXPECT_EQ(rect.GetHeight(), max);
527 EXPECT_FALSE(rect.IsEmpty());
528 }
529
530 {
531 IRect rect = IRect::MakeLTRB(5, 10, 15, min + 5);
532
533 EXPECT_EQ(rect.GetLeft(), 5);
534 EXPECT_EQ(rect.GetTop(), 10);
535 EXPECT_EQ(rect.GetRight(), 15);
536 EXPECT_EQ(rect.GetBottom(), min + 5);
537 EXPECT_EQ(rect.GetX(), 5);
538 EXPECT_EQ(rect.GetY(), 10);
539 EXPECT_EQ(rect.GetWidth(), 10);
540 EXPECT_EQ(rect.GetHeight(), min);
541 EXPECT_TRUE(rect.IsEmpty());
542 }
543}
544
545TEST(RectTest, RectMakeSize) {
546 {
547 Size s(100, 200);
548 Rect r = Rect::MakeSize(s);
549 Rect expected = Rect::MakeLTRB(0, 0, 100, 200);
550 EXPECT_RECT_NEAR(r, expected);
551 }
552
553 {
554 ISize s(100, 200);
555 Rect r = Rect::MakeSize(s);
556 Rect expected = Rect::MakeLTRB(0, 0, 100, 200);
557 EXPECT_RECT_NEAR(r, expected);
558 }
559
560 {
561 Size s(100, 200);
562 IRect r = IRect::MakeSize(s);
563 IRect expected = IRect::MakeLTRB(0, 0, 100, 200);
564 EXPECT_EQ(r, expected);
565 }
566
567 {
568 ISize s(100, 200);
569 IRect r = IRect::MakeSize(s);
570 IRect expected = IRect::MakeLTRB(0, 0, 100, 200);
571 EXPECT_EQ(r, expected);
572 }
573}
574
575TEST(RectTest, RectMakeMaximum) {
576 Rect rect = Rect::MakeMaximum();
577 auto inf = std::numeric_limits<Scalar>::infinity();
578 auto min = std::numeric_limits<Scalar>::lowest();
579 auto max = std::numeric_limits<Scalar>::max();
580
581 EXPECT_EQ(rect.GetLeft(), min);
582 EXPECT_EQ(rect.GetTop(), min);
583 EXPECT_EQ(rect.GetRight(), max);
584 EXPECT_EQ(rect.GetBottom(), max);
585 EXPECT_EQ(rect.GetX(), min);
586 EXPECT_EQ(rect.GetY(), min);
587 EXPECT_EQ(rect.GetWidth(), inf);
588 EXPECT_EQ(rect.GetHeight(), inf);
589 EXPECT_FALSE(rect.IsEmpty());
590 EXPECT_TRUE(rect.IsFinite());
591}
592
593TEST(RectTest, IRectMakeMaximum) {
594 IRect rect = IRect::MakeMaximum();
595 auto min = std::numeric_limits<int64_t>::min();
596 auto max = std::numeric_limits<int64_t>::max();
597
598 EXPECT_EQ(rect.GetLeft(), min);
599 EXPECT_EQ(rect.GetTop(), min);
600 EXPECT_EQ(rect.GetRight(), max);
601 EXPECT_EQ(rect.GetBottom(), max);
602 EXPECT_EQ(rect.GetX(), min);
603 EXPECT_EQ(rect.GetY(), min);
604 EXPECT_EQ(rect.GetWidth(), max);
605 EXPECT_EQ(rect.GetHeight(), max);
606 EXPECT_FALSE(rect.IsEmpty());
607}
608
609TEST(RectTest, RectFromRect) {
610 EXPECT_EQ(Rect(Rect::MakeXYWH(2, 3, 7, 15)),
611 Rect::MakeXYWH(2.0, 3.0, 7.0, 15.0));
612 EXPECT_EQ(Rect(Rect::MakeLTRB(2, 3, 7, 15)),
613 Rect::MakeLTRB(2.0, 3.0, 7.0, 15.0));
614}
615
616TEST(RectTest, IRectFromIRect) {
617 EXPECT_EQ(IRect(IRect::MakeXYWH(2, 3, 7, 15)), //
618 IRect::MakeXYWH(2, 3, 7, 15));
619 EXPECT_EQ(IRect(IRect::MakeLTRB(2, 3, 7, 15)), //
620 IRect::MakeLTRB(2, 3, 7, 15));
621}
622
623TEST(RectTest, RectCopy) {
624 // Using fractional-power-of-2 friendly values for equality tests
625 Rect rect = Rect::MakeLTRB(5.125f, 10.25f, 20.625f, 25.375f);
626 Rect copy = rect;
627
628 EXPECT_EQ(rect, copy);
629 EXPECT_EQ(copy.GetLeft(), 5.125f);
630 EXPECT_EQ(copy.GetTop(), 10.25f);
631 EXPECT_EQ(copy.GetRight(), 20.625f);
632 EXPECT_EQ(copy.GetBottom(), 25.375f);
633 EXPECT_EQ(copy.GetX(), 5.125f);
634 EXPECT_EQ(copy.GetY(), 10.25f);
635 EXPECT_EQ(copy.GetWidth(), 15.5f);
636 EXPECT_EQ(copy.GetHeight(), 15.125f);
637 EXPECT_FALSE(copy.IsEmpty());
638 EXPECT_TRUE(copy.IsFinite());
639}
640
641TEST(RectTest, IRectCopy) {
642 IRect rect = IRect::MakeLTRB(5, 10, 20, 25);
643 IRect copy = rect;
644
645 EXPECT_EQ(rect, copy);
646 EXPECT_EQ(copy.GetLeft(), 5);
647 EXPECT_EQ(copy.GetTop(), 10);
648 EXPECT_EQ(copy.GetRight(), 20);
649 EXPECT_EQ(copy.GetBottom(), 25);
650 EXPECT_EQ(copy.GetX(), 5);
651 EXPECT_EQ(copy.GetY(), 10);
652 EXPECT_EQ(copy.GetWidth(), 15);
653 EXPECT_EQ(copy.GetHeight(), 15);
654 EXPECT_FALSE(copy.IsEmpty());
655}
656
657TEST(RectTest, RectOriginSizeXYWHGetters) {
658 {
659 Rect r = Rect::MakeOriginSize({10, 20}, {50, 40});
660 EXPECT_EQ(r.GetOrigin(), Point(10, 20));
661 EXPECT_EQ(r.GetSize(), Size(50, 40));
662 EXPECT_EQ(r.GetX(), 10);
663 EXPECT_EQ(r.GetY(), 20);
664 EXPECT_EQ(r.GetWidth(), 50);
665 EXPECT_EQ(r.GetHeight(), 40);
666 auto expected_array = std::array<Scalar, 4>{10, 20, 50, 40};
667 EXPECT_EQ(r.GetXYWH(), expected_array);
668 }
669
670 {
671 Rect r = Rect::MakeLTRB(10, 20, 50, 40);
672 EXPECT_EQ(r.GetOrigin(), Point(10, 20));
673 EXPECT_EQ(r.GetSize(), Size(40, 20));
674 EXPECT_EQ(r.GetX(), 10);
675 EXPECT_EQ(r.GetY(), 20);
676 EXPECT_EQ(r.GetWidth(), 40);
677 EXPECT_EQ(r.GetHeight(), 20);
678 auto expected_array = std::array<Scalar, 4>{10, 20, 40, 20};
679 EXPECT_EQ(r.GetXYWH(), expected_array);
680 }
681}
682
683TEST(RectTest, IRectOriginSizeXYWHGetters) {
684 {
685 IRect r = IRect::MakeOriginSize({10, 20}, {50, 40});
686 EXPECT_EQ(r.GetOrigin(), IPoint(10, 20));
687 EXPECT_EQ(r.GetSize(), ISize(50, 40));
688 EXPECT_EQ(r.GetX(), 10);
689 EXPECT_EQ(r.GetY(), 20);
690 EXPECT_EQ(r.GetWidth(), 50);
691 EXPECT_EQ(r.GetHeight(), 40);
692 auto expected_array = std::array<int64_t, 4>{10, 20, 50, 40};
693 EXPECT_EQ(r.GetXYWH(), expected_array);
694 }
695
696 {
697 IRect r = IRect::MakeLTRB(10, 20, 50, 40);
698 EXPECT_EQ(r.GetOrigin(), IPoint(10, 20));
699 EXPECT_EQ(r.GetSize(), ISize(40, 20));
700 EXPECT_EQ(r.GetX(), 10);
701 EXPECT_EQ(r.GetY(), 20);
702 EXPECT_EQ(r.GetWidth(), 40);
703 EXPECT_EQ(r.GetHeight(), 20);
704 auto expected_array = std::array<int64_t, 4>{10, 20, 40, 20};
705 EXPECT_EQ(r.GetXYWH(), expected_array);
706 }
707}
708
709TEST(RectTest, RectRoundOutEmpty) {
710 Rect rect;
711
712 EXPECT_EQ(Rect::RoundOut(rect), Rect());
713
714 EXPECT_EQ(IRect::RoundOut(rect), IRect());
715}
716
717TEST(RectTest, RectRoundOutSimple) {
718 Rect rect = Rect::MakeLTRB(5.125f, 10.75f, 20.625f, 25.375f);
719
720 EXPECT_EQ(Rect::RoundOut(rect), Rect::MakeLTRB(5.0f, 10.0f, 21.0f, 26.0f));
721
722 EXPECT_EQ(IRect::RoundOut(rect), IRect::MakeLTRB(5, 10, 21, 26));
723}
724
725TEST(RectTest, RectRoundOutToIRectHuge) {
726 auto test = [](int corners) {
727 EXPECT_TRUE(corners >= 0 && corners <= 0xf);
728 Scalar l, t, r, b;
729 int64_t il, it, ir, ib;
730 l = il = 50;
731 t = it = 50;
732 r = ir = 80;
733 b = ib = 80;
734 if ((corners & (1 << 0)) != 0) {
735 l = -1E20;
736 il = std::numeric_limits<int64_t>::min();
737 }
738 if ((corners & (1 << 1)) != 0) {
739 t = -1E20;
740 it = std::numeric_limits<int64_t>::min();
741 }
742 if ((corners & (1 << 2)) != 0) {
743 r = +1E20;
744 ir = std::numeric_limits<int64_t>::max();
745 }
746 if ((corners & (1 << 3)) != 0) {
747 b = +1E20;
748 ib = std::numeric_limits<int64_t>::max();
749 }
750
751 Rect rect = Rect::MakeLTRB(l, t, r, b);
752 IRect irect = IRect::RoundOut(rect);
753 EXPECT_EQ(irect.GetLeft(), il) << corners;
754 EXPECT_EQ(irect.GetTop(), it) << corners;
755 EXPECT_EQ(irect.GetRight(), ir) << corners;
756 EXPECT_EQ(irect.GetBottom(), ib) << corners;
757 };
758
759 for (int corners = 0; corners <= 15; corners++) {
760 test(corners);
761 }
762}
763
764TEST(RectTest, RectDoesNotIntersectEmpty) {
765 Rect rect = Rect::MakeLTRB(50, 50, 100, 100);
766
767 auto test = [&rect](Scalar l, Scalar t, Scalar r, Scalar b,
768 const std::string& label) {
769 EXPECT_FALSE(rect.IntersectsWithRect(Rect::MakeLTRB(l, b, r, t)))
770 << label << " with Top/Bottom swapped";
771 EXPECT_FALSE(rect.IntersectsWithRect(Rect::MakeLTRB(r, b, l, t)))
772 << label << " with Left/Right swapped";
773 EXPECT_FALSE(rect.IntersectsWithRect(Rect::MakeLTRB(r, t, l, b)))
774 << label << " with all sides swapped";
775 };
776
777 test(20, 20, 30, 30, "Above and Left");
778 test(70, 20, 80, 30, "Above");
779 test(120, 20, 130, 30, "Above and Right");
780 test(120, 70, 130, 80, "Right");
781 test(120, 120, 130, 130, "Below and Right");
782 test(70, 120, 80, 130, "Below");
783 test(20, 120, 30, 130, "Below and Left");
784 test(20, 70, 30, 80, "Left");
785
786 test(70, 70, 80, 80, "Inside");
787
788 test(40, 70, 60, 80, "Straddling Left");
789 test(70, 40, 80, 60, "Straddling Top");
790 test(90, 70, 110, 80, "Straddling Right");
791 test(70, 90, 80, 110, "Straddling Bottom");
792}
793
794TEST(RectTest, IRectDoesNotIntersectEmpty) {
795 IRect rect = IRect::MakeLTRB(50, 50, 100, 100);
796
797 auto test = [&rect](int64_t l, int64_t t, int64_t r, int64_t b,
798 const std::string& label) {
799 EXPECT_FALSE(rect.IntersectsWithRect(IRect::MakeLTRB(l, b, r, t)))
800 << label << " with Top/Bottom swapped";
801 EXPECT_FALSE(rect.IntersectsWithRect(IRect::MakeLTRB(r, b, l, t)))
802 << label << " with Left/Right swapped";
803 EXPECT_FALSE(rect.IntersectsWithRect(IRect::MakeLTRB(r, t, l, b)))
804 << label << " with all sides swapped";
805 };
806
807 test(20, 20, 30, 30, "Above and Left");
808 test(70, 20, 80, 30, "Above");
809 test(120, 20, 130, 30, "Above and Right");
810 test(120, 70, 130, 80, "Right");
811 test(120, 120, 130, 130, "Below and Right");
812 test(70, 120, 80, 130, "Below");
813 test(20, 120, 30, 130, "Below and Left");
814 test(20, 70, 30, 80, "Left");
815
816 test(70, 70, 80, 80, "Inside");
817
818 test(40, 70, 60, 80, "Straddling Left");
819 test(70, 40, 80, 60, "Straddling Top");
820 test(90, 70, 110, 80, "Straddling Right");
821 test(70, 90, 80, 110, "Straddling Bottom");
822}
823
824TEST(RectTest, EmptyRectDoesNotIntersect) {
825 Rect rect = Rect::MakeLTRB(50, 50, 100, 100);
826
827 auto test = [&rect](Scalar l, Scalar t, Scalar r, Scalar b,
828 const std::string& label) {
829 EXPECT_FALSE(Rect::MakeLTRB(l, b, r, t).IntersectsWithRect(rect))
830 << label << " with Top/Bottom swapped";
831 EXPECT_FALSE(Rect::MakeLTRB(r, b, l, t).IntersectsWithRect(rect))
832 << label << " with Left/Right swapped";
833 EXPECT_FALSE(Rect::MakeLTRB(r, t, l, b).IntersectsWithRect(rect))
834 << label << " with all sides swapped";
835 };
836
837 test(20, 20, 30, 30, "Above and Left");
838 test(70, 20, 80, 30, "Above");
839 test(120, 20, 130, 30, "Above and Right");
840 test(120, 70, 130, 80, "Right");
841 test(120, 120, 130, 130, "Below and Right");
842 test(70, 120, 80, 130, "Below");
843 test(20, 120, 30, 130, "Below and Left");
844 test(20, 70, 30, 80, "Left");
845
846 test(70, 70, 80, 80, "Inside");
847
848 test(40, 70, 60, 80, "Straddling Left");
849 test(70, 40, 80, 60, "Straddling Top");
850 test(90, 70, 110, 80, "Straddling Right");
851 test(70, 90, 80, 110, "Straddling Bottom");
852}
853
854TEST(RectTest, EmptyIRectDoesNotIntersect) {
855 IRect rect = IRect::MakeLTRB(50, 50, 100, 100);
856
857 auto test = [&rect](int64_t l, int64_t t, int64_t r, int64_t b,
858 const std::string& label) {
859 EXPECT_FALSE(IRect::MakeLTRB(l, b, r, t).IntersectsWithRect(rect))
860 << label << " with Top/Bottom swapped";
861 EXPECT_FALSE(IRect::MakeLTRB(r, b, l, t).IntersectsWithRect(rect))
862 << label << " with Left/Right swapped";
863 EXPECT_FALSE(IRect::MakeLTRB(r, t, l, b).IntersectsWithRect(rect))
864 << label << " with all sides swapped";
865 };
866
867 test(20, 20, 30, 30, "Above and Left");
868 test(70, 20, 80, 30, "Above");
869 test(120, 20, 130, 30, "Above and Right");
870 test(120, 70, 130, 80, "Right");
871 test(120, 120, 130, 130, "Below and Right");
872 test(70, 120, 80, 130, "Below");
873 test(20, 120, 30, 130, "Below and Left");
874 test(20, 70, 30, 80, "Left");
875
876 test(70, 70, 80, 80, "Inside");
877
878 test(40, 70, 60, 80, "Straddling Left");
879 test(70, 40, 80, 60, "Straddling Top");
880 test(90, 70, 110, 80, "Straddling Right");
881 test(70, 90, 80, 110, "Straddling Bottom");
882}
883
884TEST(RectTest, RectScale) {
885 auto test1 = [](Rect rect, Scalar scale) {
886 Rect expected = Rect::MakeXYWH(rect.GetX() * scale, //
887 rect.GetY() * scale, //
888 rect.GetWidth() * scale, //
889 rect.GetHeight() * scale);
890
891 EXPECT_RECT_NEAR(rect.Scale(scale), expected) //
892 << rect << " * " << scale;
893 EXPECT_RECT_NEAR(rect.Scale(scale, scale), expected) //
894 << rect << " * " << scale;
895 EXPECT_RECT_NEAR(rect.Scale(Point(scale, scale)), expected) //
896 << rect << " * " << scale;
897 EXPECT_RECT_NEAR(rect.Scale(Size(scale, scale)), expected) //
898 << rect << " * " << scale;
899 };
900
901 auto test2 = [&test1](Rect rect, Scalar scale_x, Scalar scale_y) {
902 Rect expected = Rect::MakeXYWH(rect.GetX() * scale_x, //
903 rect.GetY() * scale_y, //
904 rect.GetWidth() * scale_x, //
905 rect.GetHeight() * scale_y);
906
907 EXPECT_RECT_NEAR(rect.Scale(scale_x, scale_y), expected) //
908 << rect << " * " << scale_x << ", " << scale_y;
909 EXPECT_RECT_NEAR(rect.Scale(Point(scale_x, scale_y)), expected) //
910 << rect << " * " << scale_x << ", " << scale_y;
911 EXPECT_RECT_NEAR(rect.Scale(Size(scale_x, scale_y)), expected) //
912 << rect << " * " << scale_x << ", " << scale_y;
913
914 test1(rect, scale_x);
915 test1(rect, scale_y);
916 };
917
918 test2(Rect::MakeLTRB(10, 15, 100, 150), 1.0, 0.0);
919 test2(Rect::MakeLTRB(10, 15, 100, 150), 0.0, 1.0);
920 test2(Rect::MakeLTRB(10, 15, 100, 150), 0.0, 0.0);
921 test2(Rect::MakeLTRB(10, 15, 100, 150), 2.5, 3.5);
922 test2(Rect::MakeLTRB(10, 15, 100, 150), 3.5, 2.5);
923 test2(Rect::MakeLTRB(10, 15, -100, 150), 2.5, 3.5);
924 test2(Rect::MakeLTRB(10, 15, 100, -150), 2.5, 3.5);
925 test2(Rect::MakeLTRB(10, 15, 100, 150), -2.5, 3.5);
926 test2(Rect::MakeLTRB(10, 15, 100, 150), 2.5, -3.5);
927}
928
929TEST(RectTest, IRectScale) {
930 auto test1 = [](IRect rect, int64_t scale) {
931 IRect expected = IRect::MakeXYWH(rect.GetX() * scale, //
932 rect.GetY() * scale, //
933 rect.GetWidth() * scale, //
934 rect.GetHeight() * scale);
935
936 EXPECT_EQ(rect.Scale(scale), expected) //
937 << rect << " * " << scale;
938 EXPECT_EQ(rect.Scale(scale, scale), expected) //
939 << rect << " * " << scale;
940 EXPECT_EQ(rect.Scale(IPoint(scale, scale)), expected) //
941 << rect << " * " << scale;
942 EXPECT_EQ(rect.Scale(ISize(scale, scale)), expected) //
943 << rect << " * " << scale;
944 };
945
946 auto test2 = [&test1](IRect rect, int64_t scale_x, int64_t scale_y) {
947 IRect expected = IRect::MakeXYWH(rect.GetX() * scale_x, //
948 rect.GetY() * scale_y, //
949 rect.GetWidth() * scale_x, //
950 rect.GetHeight() * scale_y);
951
952 EXPECT_EQ(rect.Scale(scale_x, scale_y), expected) //
953 << rect << " * " << scale_x << ", " << scale_y;
954 EXPECT_EQ(rect.Scale(IPoint(scale_x, scale_y)), expected) //
955 << rect << " * " << scale_x << ", " << scale_y;
956 EXPECT_EQ(rect.Scale(ISize(scale_x, scale_y)), expected) //
957 << rect << " * " << scale_x << ", " << scale_y;
958
959 test1(rect, scale_x);
960 test1(rect, scale_y);
961 };
962
963 test2(IRect::MakeLTRB(10, 15, 100, 150), 2, 3);
964 test2(IRect::MakeLTRB(10, 15, 100, 150), 3, 2);
965 test2(IRect::MakeLTRB(10, 15, -100, 150), 2, 3);
966 test2(IRect::MakeLTRB(10, 15, 100, -150), 2, 3);
967 test2(IRect::MakeLTRB(10, 15, 100, 150), -2, 3);
968 test2(IRect::MakeLTRB(10, 15, 100, 150), 2, -3);
969}
970
971TEST(RectTest, RectArea) {
972 EXPECT_EQ(Rect::MakeXYWH(0, 0, 100, 200).Area(), 20000);
973 EXPECT_EQ(Rect::MakeXYWH(10, 20, 100, 200).Area(), 20000);
974 EXPECT_EQ(Rect::MakeXYWH(0, 0, 200, 100).Area(), 20000);
975 EXPECT_EQ(Rect::MakeXYWH(10, 20, 200, 100).Area(), 20000);
976 EXPECT_EQ(Rect::MakeXYWH(0, 0, 100, 100).Area(), 10000);
977 EXPECT_EQ(Rect::MakeXYWH(10, 20, 100, 100).Area(), 10000);
978}
979
980TEST(RectTest, IRectArea) {
981 EXPECT_EQ(IRect::MakeXYWH(0, 0, 100, 200).Area(), 20000);
982 EXPECT_EQ(IRect::MakeXYWH(10, 20, 100, 200).Area(), 20000);
983 EXPECT_EQ(IRect::MakeXYWH(0, 0, 200, 100).Area(), 20000);
984 EXPECT_EQ(IRect::MakeXYWH(10, 20, 200, 100).Area(), 20000);
985 EXPECT_EQ(IRect::MakeXYWH(0, 0, 100, 100).Area(), 10000);
986 EXPECT_EQ(IRect::MakeXYWH(10, 20, 100, 100).Area(), 10000);
987}
988
989TEST(RectTest, RectGetNormalizingTransform) {
990 {
991 // Checks for expected matrix values
992
993 auto r = Rect::MakeXYWH(100, 200, 200, 400);
994
995 EXPECT_EQ(r.GetNormalizingTransform(),
996 Matrix::MakeScale({0.005, 0.0025, 1.0}) *
997 Matrix::MakeTranslation({-100, -200}));
998 }
999
1000 {
1001 // Checks for expected transform of points relative to the rect
1002
1003 auto r = Rect::MakeLTRB(300, 500, 400, 700);
1004 auto m = r.GetNormalizingTransform();
1005
1006 // The 4 corners of the rect => (0, 0) to (1, 1)
1007 EXPECT_EQ(m * Point(300, 500), Point(0, 0));
1008 EXPECT_EQ(m * Point(400, 500), Point(1, 0));
1009 EXPECT_EQ(m * Point(400, 700), Point(1, 1));
1010 EXPECT_EQ(m * Point(300, 700), Point(0, 1));
1011
1012 // The center => (0.5, 0.5)
1013 EXPECT_EQ(m * Point(350, 600), Point(0.5, 0.5));
1014
1015 // Outside the 4 corners => (-1, -1) to (2, 2)
1016 EXPECT_EQ(m * Point(200, 300), Point(-1, -1));
1017 EXPECT_EQ(m * Point(500, 300), Point(2, -1));
1018 EXPECT_EQ(m * Point(500, 900), Point(2, 2));
1019 EXPECT_EQ(m * Point(200, 900), Point(-1, 2));
1020 }
1021
1022 {
1023 // Checks for behavior with empty rects
1024
1025 auto zero = Matrix::MakeScale({0.0, 0.0, 1.0});
1026
1027 // Empty for width and/or height == 0
1028 EXPECT_EQ(Rect::MakeXYWH(10, 10, 0, 10).GetNormalizingTransform(), zero);
1029 EXPECT_EQ(Rect::MakeXYWH(10, 10, 10, 0).GetNormalizingTransform(), zero);
1030 EXPECT_EQ(Rect::MakeXYWH(10, 10, 0, 0).GetNormalizingTransform(), zero);
1031
1032 // Empty for width and/or height < 0
1033 EXPECT_EQ(Rect::MakeXYWH(10, 10, -1, 10).GetNormalizingTransform(), zero);
1034 EXPECT_EQ(Rect::MakeXYWH(10, 10, 10, -1).GetNormalizingTransform(), zero);
1035 EXPECT_EQ(Rect::MakeXYWH(10, 10, -1, -1).GetNormalizingTransform(), zero);
1036 }
1037
1038 {
1039 // Checks for behavior with non-finite rects
1040
1041 auto z = Matrix::MakeScale({0.0, 0.0, 1.0});
1042 auto nan = std::numeric_limits<Scalar>::quiet_NaN();
1043 auto inf = std::numeric_limits<Scalar>::infinity();
1044
1045 // Non-finite for width and/or height == nan
1046 EXPECT_EQ(Rect::MakeXYWH(10, 10, nan, 10).GetNormalizingTransform(), z);
1047 EXPECT_EQ(Rect::MakeXYWH(10, 10, 10, nan).GetNormalizingTransform(), z);
1048 EXPECT_EQ(Rect::MakeXYWH(10, 10, nan, nan).GetNormalizingTransform(), z);
1049
1050 // Non-finite for width and/or height == inf
1051 EXPECT_EQ(Rect::MakeXYWH(10, 10, inf, 10).GetNormalizingTransform(), z);
1052 EXPECT_EQ(Rect::MakeXYWH(10, 10, 10, inf).GetNormalizingTransform(), z);
1053 EXPECT_EQ(Rect::MakeXYWH(10, 10, inf, inf).GetNormalizingTransform(), z);
1054
1055 // Non-finite for width and/or height == -inf
1056 EXPECT_EQ(Rect::MakeXYWH(10, 10, -inf, 10).GetNormalizingTransform(), z);
1057 EXPECT_EQ(Rect::MakeXYWH(10, 10, 10, -inf).GetNormalizingTransform(), z);
1058 EXPECT_EQ(Rect::MakeXYWH(10, 10, -inf, -inf).GetNormalizingTransform(), z);
1059
1060 // Non-finite for origin X and/or Y == nan
1061 EXPECT_EQ(Rect::MakeXYWH(nan, 10, 10, 10).GetNormalizingTransform(), z);
1062 EXPECT_EQ(Rect::MakeXYWH(10, nan, 10, 10).GetNormalizingTransform(), z);
1063 EXPECT_EQ(Rect::MakeXYWH(nan, nan, 10, 10).GetNormalizingTransform(), z);
1064
1065 // Non-finite for origin X and/or Y == inf
1066 EXPECT_EQ(Rect::MakeXYWH(inf, 10, 10, 10).GetNormalizingTransform(), z);
1067 EXPECT_EQ(Rect::MakeXYWH(10, inf, 10, 10).GetNormalizingTransform(), z);
1068 EXPECT_EQ(Rect::MakeXYWH(inf, inf, 10, 10).GetNormalizingTransform(), z);
1069
1070 // Non-finite for origin X and/or Y == -inf
1071 EXPECT_EQ(Rect::MakeXYWH(-inf, 10, 10, 10).GetNormalizingTransform(), z);
1072 EXPECT_EQ(Rect::MakeXYWH(10, -inf, 10, 10).GetNormalizingTransform(), z);
1073 EXPECT_EQ(Rect::MakeXYWH(-inf, -inf, 10, 10).GetNormalizingTransform(), z);
1074 }
1075}
1076
1077TEST(RectTest, IRectGetNormalizingTransform) {
1078 {
1079 // Checks for expected matrix values
1080
1081 auto r = IRect::MakeXYWH(100, 200, 200, 400);
1082
1083 EXPECT_EQ(r.GetNormalizingTransform(),
1084 Matrix::MakeScale({0.005, 0.0025, 1.0}) *
1085 Matrix::MakeTranslation({-100, -200}));
1086 }
1087
1088 {
1089 // Checks for expected transform of points relative to the rect
1090
1091 auto r = IRect::MakeLTRB(300, 500, 400, 700);
1092 auto m = r.GetNormalizingTransform();
1093
1094 // The 4 corners of the rect => (0, 0) to (1, 1)
1095 EXPECT_EQ(m * Point(300, 500), Point(0, 0));
1096 EXPECT_EQ(m * Point(400, 500), Point(1, 0));
1097 EXPECT_EQ(m * Point(400, 700), Point(1, 1));
1098 EXPECT_EQ(m * Point(300, 700), Point(0, 1));
1099
1100 // The center => (0.5, 0.5)
1101 EXPECT_EQ(m * Point(350, 600), Point(0.5, 0.5));
1102
1103 // Outside the 4 corners => (-1, -1) to (2, 2)
1104 EXPECT_EQ(m * Point(200, 300), Point(-1, -1));
1105 EXPECT_EQ(m * Point(500, 300), Point(2, -1));
1106 EXPECT_EQ(m * Point(500, 900), Point(2, 2));
1107 EXPECT_EQ(m * Point(200, 900), Point(-1, 2));
1108 }
1109
1110 {
1111 // Checks for behavior with empty rects
1112
1113 auto zero = Matrix::MakeScale({0.0, 0.0, 1.0});
1114
1115 // Empty for width and/or height == 0
1116 EXPECT_EQ(IRect::MakeXYWH(10, 10, 0, 10).GetNormalizingTransform(), zero);
1117 EXPECT_EQ(IRect::MakeXYWH(10, 10, 10, 0).GetNormalizingTransform(), zero);
1118 EXPECT_EQ(IRect::MakeXYWH(10, 10, 0, 0).GetNormalizingTransform(), zero);
1119
1120 // Empty for width and/or height < 0
1121 EXPECT_EQ(IRect::MakeXYWH(10, 10, -1, 10).GetNormalizingTransform(), zero);
1122 EXPECT_EQ(IRect::MakeXYWH(10, 10, 10, -1).GetNormalizingTransform(), zero);
1123 EXPECT_EQ(IRect::MakeXYWH(10, 10, -1, -1).GetNormalizingTransform(), zero);
1124 }
1125}
1126
1127TEST(RectTest, RectXYWHIsEmpty) {
1128 auto nan = std::numeric_limits<Scalar>::quiet_NaN();
1129
1130 // Non-empty
1131 EXPECT_FALSE(Rect::MakeXYWH(1.5, 2.3, 10.5, 7.2).IsEmpty());
1132
1133 // Empty both width and height both 0 or negative, in all combinations
1134 EXPECT_TRUE(Rect::MakeXYWH(1.5, 2.3, 0.0, 0.0).IsEmpty());
1135 EXPECT_TRUE(Rect::MakeXYWH(1.5, 2.3, -1.0, -1.0).IsEmpty());
1136 EXPECT_TRUE(Rect::MakeXYWH(1.5, 2.3, 0.0, -1.0).IsEmpty());
1137 EXPECT_TRUE(Rect::MakeXYWH(1.5, 2.3, -1.0, 0.0).IsEmpty());
1138
1139 // Empty for 0 or negative width or height (but not both at the same time)
1140 EXPECT_TRUE(Rect::MakeXYWH(1.5, 2.3, 10.5, 0.0).IsEmpty());
1141 EXPECT_TRUE(Rect::MakeXYWH(1.5, 2.3, 10.5, -1.0).IsEmpty());
1142 EXPECT_TRUE(Rect::MakeXYWH(1.5, 2.3, 0.0, 7.2).IsEmpty());
1143 EXPECT_TRUE(Rect::MakeXYWH(1.5, 2.3, -1.0, 7.2).IsEmpty());
1144
1145 // Empty for NaN in width or height or both
1146 EXPECT_TRUE(Rect::MakeXYWH(1.5, 2.3, 10.5, nan).IsEmpty());
1147 EXPECT_TRUE(Rect::MakeXYWH(1.5, 2.3, nan, 7.2).IsEmpty());
1148 EXPECT_TRUE(Rect::MakeXYWH(1.5, 2.3, nan, nan).IsEmpty());
1149}
1150
1151TEST(RectTest, IRectXYWHIsEmpty) {
1152 // Non-empty
1153 EXPECT_FALSE(IRect::MakeXYWH(1, 2, 10, 7).IsEmpty());
1154
1155 // Empty both width and height both 0 or negative, in all combinations
1156 EXPECT_TRUE(IRect::MakeXYWH(1, 2, 0, 0).IsEmpty());
1157 EXPECT_TRUE(IRect::MakeXYWH(1, 2, -1, -1).IsEmpty());
1158 EXPECT_TRUE(IRect::MakeXYWH(1, 2, -1, 0).IsEmpty());
1159 EXPECT_TRUE(IRect::MakeXYWH(1, 2, 0, -1).IsEmpty());
1160
1161 // Empty for 0 or negative width or height (but not both at the same time)
1162 EXPECT_TRUE(IRect::MakeXYWH(1, 2, 10, 0).IsEmpty());
1163 EXPECT_TRUE(IRect::MakeXYWH(1, 2, 10, -1).IsEmpty());
1164 EXPECT_TRUE(IRect::MakeXYWH(1, 2, 0, 7).IsEmpty());
1165 EXPECT_TRUE(IRect::MakeXYWH(1, 2, -1, 7).IsEmpty());
1166}
1167
1168TEST(RectTest, MakePointBoundsQuad) {
1169 Quad quad = {
1170 Point(10, 10),
1171 Point(20, 10),
1172 Point(10, 20),
1173 Point(20, 20),
1174 };
1175 std::optional<Rect> bounds = Rect::MakePointBounds(quad);
1176 EXPECT_TRUE(bounds.has_value());
1177 if (bounds.has_value()) {
1178 EXPECT_TRUE(RectNear(bounds.value(), Rect::MakeLTRB(10, 10, 20, 20)));
1179 }
1180}
1181
1182TEST(RectTest, IsSquare) {
1183 EXPECT_TRUE(Rect::MakeXYWH(10, 30, 20, 20).IsSquare());
1184 EXPECT_FALSE(Rect::MakeXYWH(10, 30, 20, 19).IsSquare());
1185 EXPECT_FALSE(Rect::MakeXYWH(10, 30, 19, 20).IsSquare());
1186 EXPECT_TRUE(Rect::MakeMaximum().IsSquare());
1187
1188 EXPECT_TRUE(IRect::MakeXYWH(10, 30, 20, 20).IsSquare());
1189 EXPECT_FALSE(IRect::MakeXYWH(10, 30, 20, 19).IsSquare());
1190 EXPECT_FALSE(IRect::MakeXYWH(10, 30, 19, 20).IsSquare());
1191 EXPECT_TRUE(IRect::MakeMaximum().IsSquare());
1192}
1193
1194TEST(RectTest, GetCenter) {
1195 EXPECT_EQ(Rect::MakeXYWH(10, 30, 20, 20).GetCenter(), Point(20, 40));
1196 EXPECT_EQ(Rect::MakeXYWH(10, 30, 20, 19).GetCenter(), Point(20, 39.5));
1197 EXPECT_EQ(Rect::MakeMaximum().GetCenter(), Point(0, 0));
1198
1199 // Note that we expect a Point as the answer from an IRect
1200 EXPECT_EQ(IRect::MakeXYWH(10, 30, 20, 20).GetCenter(), Point(20, 40));
1201 EXPECT_EQ(IRect::MakeXYWH(10, 30, 20, 19).GetCenter(), Point(20, 39.5));
1202 EXPECT_EQ(IRect::MakeMaximum().GetCenter(), Point(0, 0));
1203}
1204
1205TEST(RectTest, RectExpand) {
1206 auto rect = Rect::MakeLTRB(100, 100, 200, 200);
1207
1208 // Expand(T amount)
1209 EXPECT_EQ(rect.Expand(10), Rect::MakeLTRB(90, 90, 210, 210));
1210 EXPECT_EQ(rect.Expand(-10), Rect::MakeLTRB(110, 110, 190, 190));
1211
1212 // Expand(amount, amount)
1213 EXPECT_EQ(rect.Expand(10, 10), Rect::MakeLTRB(90, 90, 210, 210));
1214 EXPECT_EQ(rect.Expand(10, -10), Rect::MakeLTRB(90, 110, 210, 190));
1215 EXPECT_EQ(rect.Expand(-10, 10), Rect::MakeLTRB(110, 90, 190, 210));
1216 EXPECT_EQ(rect.Expand(-10, -10), Rect::MakeLTRB(110, 110, 190, 190));
1217
1218 // Expand(amount, amount, amount, amount)
1219 EXPECT_EQ(rect.Expand(10, 20, 30, 40), Rect::MakeLTRB(90, 80, 230, 240));
1220 EXPECT_EQ(rect.Expand(-10, 20, 30, 40), Rect::MakeLTRB(110, 80, 230, 240));
1221 EXPECT_EQ(rect.Expand(10, -20, 30, 40), Rect::MakeLTRB(90, 120, 230, 240));
1222 EXPECT_EQ(rect.Expand(10, 20, -30, 40), Rect::MakeLTRB(90, 80, 170, 240));
1223 EXPECT_EQ(rect.Expand(10, 20, 30, -40), Rect::MakeLTRB(90, 80, 230, 160));
1224
1225 // Expand(Point amount)
1226 EXPECT_EQ(rect.Expand(Point{10, 10}), Rect::MakeLTRB(90, 90, 210, 210));
1227 EXPECT_EQ(rect.Expand(Point{10, -10}), Rect::MakeLTRB(90, 110, 210, 190));
1228 EXPECT_EQ(rect.Expand(Point{-10, 10}), Rect::MakeLTRB(110, 90, 190, 210));
1229 EXPECT_EQ(rect.Expand(Point{-10, -10}), Rect::MakeLTRB(110, 110, 190, 190));
1230
1231 // Expand(Size amount)
1232 EXPECT_EQ(rect.Expand(Size{10, 10}), Rect::MakeLTRB(90, 90, 210, 210));
1233 EXPECT_EQ(rect.Expand(Size{10, -10}), Rect::MakeLTRB(90, 110, 210, 190));
1234 EXPECT_EQ(rect.Expand(Size{-10, 10}), Rect::MakeLTRB(110, 90, 190, 210));
1235 EXPECT_EQ(rect.Expand(Size{-10, -10}), Rect::MakeLTRB(110, 110, 190, 190));
1236}
1237
1238TEST(RectTest, IRectExpand) {
1239 auto rect = IRect::MakeLTRB(100, 100, 200, 200);
1240
1241 // Expand(T amount)
1242 EXPECT_EQ(rect.Expand(10), IRect::MakeLTRB(90, 90, 210, 210));
1243 EXPECT_EQ(rect.Expand(-10), IRect::MakeLTRB(110, 110, 190, 190));
1244
1245 // Expand(amount, amount)
1246 EXPECT_EQ(rect.Expand(10, 10), IRect::MakeLTRB(90, 90, 210, 210));
1247 EXPECT_EQ(rect.Expand(10, -10), IRect::MakeLTRB(90, 110, 210, 190));
1248 EXPECT_EQ(rect.Expand(-10, 10), IRect::MakeLTRB(110, 90, 190, 210));
1249 EXPECT_EQ(rect.Expand(-10, -10), IRect::MakeLTRB(110, 110, 190, 190));
1250
1251 // Expand(amount, amount, amount, amount)
1252 EXPECT_EQ(rect.Expand(10, 20, 30, 40), IRect::MakeLTRB(90, 80, 230, 240));
1253 EXPECT_EQ(rect.Expand(-10, 20, 30, 40), IRect::MakeLTRB(110, 80, 230, 240));
1254 EXPECT_EQ(rect.Expand(10, -20, 30, 40), IRect::MakeLTRB(90, 120, 230, 240));
1255 EXPECT_EQ(rect.Expand(10, 20, -30, 40), IRect::MakeLTRB(90, 80, 170, 240));
1256 EXPECT_EQ(rect.Expand(10, 20, 30, -40), IRect::MakeLTRB(90, 80, 230, 160));
1257
1258 // Expand(IPoint amount)
1259 EXPECT_EQ(rect.Expand(IPoint{10, 10}), IRect::MakeLTRB(90, 90, 210, 210));
1260 EXPECT_EQ(rect.Expand(IPoint{10, -10}), IRect::MakeLTRB(90, 110, 210, 190));
1261 EXPECT_EQ(rect.Expand(IPoint{-10, 10}), IRect::MakeLTRB(110, 90, 190, 210));
1262 EXPECT_EQ(rect.Expand(IPoint{-10, -10}), IRect::MakeLTRB(110, 110, 190, 190));
1263
1264 // Expand(ISize amount)
1265 EXPECT_EQ(rect.Expand(ISize{10, 10}), IRect::MakeLTRB(90, 90, 210, 210));
1266 EXPECT_EQ(rect.Expand(ISize{10, -10}), IRect::MakeLTRB(90, 110, 210, 190));
1267 EXPECT_EQ(rect.Expand(ISize{-10, 10}), IRect::MakeLTRB(110, 90, 190, 210));
1268 EXPECT_EQ(rect.Expand(ISize{-10, -10}), IRect::MakeLTRB(110, 110, 190, 190));
1269}
1270
1271TEST(RectTest, ContainsFloatingPoint) {
1272 auto rect1 =
1273 Rect::MakeXYWH(472.599945f, 440.999969f, 1102.80005f, 654.000061f);
1274 auto rect2 = Rect::MakeXYWH(724.f, 618.f, 600.f, 300.f);
1275 EXPECT_TRUE(rect1.Contains(rect2));
1276}
1277
1278template <typename R>
1279static constexpr inline R flip_lr(R rect) {
1280 return R::MakeLTRB(rect.GetRight(), rect.GetTop(), //
1281 rect.GetLeft(), rect.GetBottom());
1282}
1283
1284template <typename R>
1285static constexpr inline R flip_tb(R rect) {
1286 return R::MakeLTRB(rect.GetLeft(), rect.GetBottom(), //
1287 rect.GetRight(), rect.GetTop());
1288}
1289
1290template <typename R>
1291static constexpr inline R flip_lrtb(R rect) {
1292 return flip_lr(flip_tb(rect));
1293}
1294
1295static constexpr inline Rect swap_nan(const Rect& rect, int index) {
1296 Scalar nan = std::numeric_limits<Scalar>::quiet_NaN();
1297 FML_DCHECK(index >= 0 && index <= 15);
1298 Scalar l = ((index & (1 << 0)) != 0) ? nan : rect.GetLeft();
1299 Scalar t = ((index & (1 << 1)) != 0) ? nan : rect.GetTop();
1300 Scalar r = ((index & (1 << 2)) != 0) ? nan : rect.GetRight();
1301 Scalar b = ((index & (1 << 3)) != 0) ? nan : rect.GetBottom();
1302 return Rect::MakeLTRB(l, t, r, b);
1303}
1304
1305static constexpr inline Point swap_nan(const Point& point, int index) {
1306 Scalar nan = std::numeric_limits<Scalar>::quiet_NaN();
1307 FML_DCHECK(index >= 0 && index <= 3);
1308 Scalar x = ((index & (1 << 0)) != 0) ? nan : point.x;
1309 Scalar y = ((index & (1 << 1)) != 0) ? nan : point.y;
1310 return Point(x, y);
1311}
1312
1313TEST(RectTest, RectUnion) {
1314 auto check_nans = [](const Rect& a, const Rect& b, const std::string& label) {
1315 ASSERT_TRUE(a.IsFinite()) << label;
1316 ASSERT_TRUE(b.IsFinite()) << label;
1317 ASSERT_FALSE(a.Union(b).IsEmpty());
1318
1319 for (int i = 1; i < 16; i++) {
1320 // NaN in a produces b
1321 EXPECT_EQ(swap_nan(a, i).Union(b), b) << label << ", index = " << i;
1322 // NaN in b produces a
1323 EXPECT_EQ(a.Union(swap_nan(b, i)), a) << label << ", index = " << i;
1324 // NaN in both is empty
1325 for (int j = 1; j < 16; j++) {
1326 EXPECT_TRUE(swap_nan(a, i).Union(swap_nan(b, j)).IsEmpty())
1327 << label << ", indices = " << i << ", " << j;
1328 }
1329 }
1330 };
1331
1332 auto check_empty_flips = [](const Rect& a, const Rect& b,
1333 const std::string& label) {
1334 ASSERT_FALSE(a.IsEmpty());
1335 // b is allowed to be empty
1336
1337 // unflipped a vs flipped (empty) b yields a
1338 EXPECT_EQ(a.Union(flip_lr(b)), a) << label;
1339 EXPECT_EQ(a.Union(flip_tb(b)), a) << label;
1340 EXPECT_EQ(a.Union(flip_lrtb(b)), a) << label;
1341
1342 // flipped (empty) a vs unflipped b yields b
1343 EXPECT_EQ(flip_lr(a).Union(b), b) << label;
1344 EXPECT_EQ(flip_tb(a).Union(b), b) << label;
1345 EXPECT_EQ(flip_lrtb(a).Union(b), b) << label;
1346
1347 // flipped (empty) a vs flipped (empty) b yields empty
1348 EXPECT_TRUE(flip_lr(a).Union(flip_lr(b)).IsEmpty()) << label;
1349 EXPECT_TRUE(flip_tb(a).Union(flip_tb(b)).IsEmpty()) << label;
1350 EXPECT_TRUE(flip_lrtb(a).Union(flip_lrtb(b)).IsEmpty()) << label;
1351 };
1352
1353 auto test = [&check_nans, &check_empty_flips](const Rect& a, const Rect& b,
1354 const Rect& result) {
1355 ASSERT_FALSE(a.IsEmpty()) << a;
1356 // b is allowed to be empty
1357
1358 std::stringstream stream;
1359 stream << a << " union " << b;
1360 auto label = stream.str();
1361
1362 EXPECT_EQ(a.Union(b), result) << label;
1363 EXPECT_EQ(b.Union(a), result) << label;
1364 check_empty_flips(a, b, label);
1365 check_nans(a, b, label);
1366 };
1367
1368 {
1369 auto a = Rect::MakeXYWH(100, 100, 100, 100);
1370 auto b = Rect::MakeXYWH(0, 0, 0, 0);
1371 auto expected = Rect::MakeXYWH(100, 100, 100, 100);
1372 test(a, b, expected);
1373 }
1374
1375 {
1376 auto a = Rect::MakeXYWH(100, 100, 100, 100);
1377 auto b = Rect::MakeXYWH(0, 0, 1, 1);
1378 auto expected = Rect::MakeXYWH(0, 0, 200, 200);
1379 test(a, b, expected);
1380 }
1381
1382 {
1383 auto a = Rect::MakeXYWH(100, 100, 100, 100);
1384 auto b = Rect::MakeXYWH(10, 10, 1, 1);
1385 auto expected = Rect::MakeXYWH(10, 10, 190, 190);
1386 test(a, b, expected);
1387 }
1388
1389 {
1390 auto a = Rect::MakeXYWH(0, 0, 100, 100);
1391 auto b = Rect::MakeXYWH(10, 10, 100, 100);
1392 auto expected = Rect::MakeXYWH(0, 0, 110, 110);
1393 test(a, b, expected);
1394 }
1395
1396 {
1397 auto a = Rect::MakeXYWH(0, 0, 100, 100);
1398 auto b = Rect::MakeXYWH(100, 100, 100, 100);
1399 auto expected = Rect::MakeXYWH(0, 0, 200, 200);
1400 test(a, b, expected);
1401 }
1402}
1403
1404TEST(RectTest, OptRectUnion) {
1405 auto a = Rect::MakeLTRB(0, 0, 100, 100);
1406 auto b = Rect::MakeLTRB(100, 100, 200, 200);
1407 auto c = Rect::MakeLTRB(100, 0, 200, 100);
1408
1409 // NullOpt, NullOpt
1410 EXPECT_FALSE(Rect::Union(std::nullopt, std::nullopt).has_value());
1411 EXPECT_EQ(Rect::Union(std::nullopt, std::nullopt), std::nullopt);
1412
1413 auto test1 = [](const Rect& r) {
1414 // Rect, NullOpt
1415 EXPECT_TRUE(Rect::Union(r, std::nullopt).has_value());
1416 EXPECT_EQ(Rect::Union(r, std::nullopt).value(), r);
1417
1418 // OptRect, NullOpt
1419 EXPECT_TRUE(Rect::Union(std::optional(r), std::nullopt).has_value());
1420 EXPECT_EQ(Rect::Union(std::optional(r), std::nullopt).value(), r);
1421
1422 // NullOpt, Rect
1423 EXPECT_TRUE(Rect::Union(std::nullopt, r).has_value());
1424 EXPECT_EQ(Rect::Union(std::nullopt, r).value(), r);
1425
1426 // NullOpt, OptRect
1427 EXPECT_TRUE(Rect::Union(std::nullopt, std::optional(r)).has_value());
1428 EXPECT_EQ(Rect::Union(std::nullopt, std::optional(r)).value(), r);
1429 };
1430
1431 test1(a);
1432 test1(b);
1433 test1(c);
1434
1435 auto test2 = [](const Rect& a, const Rect& b, const Rect& u) {
1436 ASSERT_EQ(a.Union(b), u);
1437
1438 // Rect, OptRect
1439 EXPECT_TRUE(Rect::Union(a, std::optional(b)).has_value());
1440 EXPECT_EQ(Rect::Union(a, std::optional(b)).value(), u);
1441
1442 // OptRect, Rect
1443 EXPECT_TRUE(Rect::Union(std::optional(a), b).has_value());
1444 EXPECT_EQ(Rect::Union(std::optional(a), b).value(), u);
1445
1446 // OptRect, OptRect
1447 EXPECT_TRUE(Rect::Union(std::optional(a), std::optional(b)).has_value());
1448 EXPECT_EQ(Rect::Union(std::optional(a), std::optional(b)).value(), u);
1449 };
1450
1451 test2(a, b, Rect::MakeLTRB(0, 0, 200, 200));
1452 test2(a, c, Rect::MakeLTRB(0, 0, 200, 100));
1453 test2(b, c, Rect::MakeLTRB(100, 0, 200, 200));
1454}
1455
1456TEST(RectTest, IRectUnion) {
1457 auto check_empty_flips = [](const IRect& a, const IRect& b,
1458 const std::string& label) {
1459 ASSERT_FALSE(a.IsEmpty());
1460 // b is allowed to be empty
1461
1462 // unflipped a vs flipped (empty) b yields a
1463 EXPECT_EQ(a.Union(flip_lr(b)), a) << label;
1464 EXPECT_EQ(a.Union(flip_tb(b)), a) << label;
1465 EXPECT_EQ(a.Union(flip_lrtb(b)), a) << label;
1466
1467 // flipped (empty) a vs unflipped b yields b
1468 EXPECT_EQ(flip_lr(a).Union(b), b) << label;
1469 EXPECT_EQ(flip_tb(a).Union(b), b) << label;
1470 EXPECT_EQ(flip_lrtb(a).Union(b), b) << label;
1471
1472 // flipped (empty) a vs flipped (empty) b yields empty
1473 EXPECT_TRUE(flip_lr(a).Union(flip_lr(b)).IsEmpty()) << label;
1474 EXPECT_TRUE(flip_tb(a).Union(flip_tb(b)).IsEmpty()) << label;
1475 EXPECT_TRUE(flip_lrtb(a).Union(flip_lrtb(b)).IsEmpty()) << label;
1476 };
1477
1478 auto test = [&check_empty_flips](const IRect& a, const IRect& b,
1479 const IRect& result) {
1480 ASSERT_FALSE(a.IsEmpty()) << a;
1481 // b is allowed to be empty
1482
1483 std::stringstream stream;
1484 stream << a << " union " << b;
1485 auto label = stream.str();
1486
1487 EXPECT_EQ(a.Union(b), result) << label;
1488 EXPECT_EQ(b.Union(a), result) << label;
1489 check_empty_flips(a, b, label);
1490 };
1491
1492 {
1493 auto a = IRect::MakeXYWH(100, 100, 100, 100);
1494 auto b = IRect::MakeXYWH(0, 0, 0, 0);
1495 auto expected = IRect::MakeXYWH(100, 100, 100, 100);
1496 test(a, b, expected);
1497 }
1498
1499 {
1500 auto a = IRect::MakeXYWH(100, 100, 100, 100);
1501 auto b = IRect::MakeXYWH(0, 0, 1, 1);
1502 auto expected = IRect::MakeXYWH(0, 0, 200, 200);
1503 test(a, b, expected);
1504 }
1505
1506 {
1507 auto a = IRect::MakeXYWH(100, 100, 100, 100);
1508 auto b = IRect::MakeXYWH(10, 10, 1, 1);
1509 auto expected = IRect::MakeXYWH(10, 10, 190, 190);
1510 test(a, b, expected);
1511 }
1512
1513 {
1514 auto a = IRect::MakeXYWH(0, 0, 100, 100);
1515 auto b = IRect::MakeXYWH(10, 10, 100, 100);
1516 auto expected = IRect::MakeXYWH(0, 0, 110, 110);
1517 test(a, b, expected);
1518 }
1519
1520 {
1521 auto a = IRect::MakeXYWH(0, 0, 100, 100);
1522 auto b = IRect::MakeXYWH(100, 100, 100, 100);
1523 auto expected = IRect::MakeXYWH(0, 0, 200, 200);
1524 test(a, b, expected);
1525 }
1526}
1527
1528TEST(RectTest, OptIRectUnion) {
1529 auto a = IRect::MakeLTRB(0, 0, 100, 100);
1530 auto b = IRect::MakeLTRB(100, 100, 200, 200);
1531 auto c = IRect::MakeLTRB(100, 0, 200, 100);
1532
1533 // NullOpt, NullOpt
1534 EXPECT_FALSE(IRect::Union(std::nullopt, std::nullopt).has_value());
1535 EXPECT_EQ(IRect::Union(std::nullopt, std::nullopt), std::nullopt);
1536
1537 auto test1 = [](const IRect& r) {
1538 // Rect, NullOpt
1539 EXPECT_TRUE(IRect::Union(r, std::nullopt).has_value());
1540 EXPECT_EQ(IRect::Union(r, std::nullopt).value(), r);
1541
1542 // OptRect, NullOpt
1543 EXPECT_TRUE(IRect::Union(std::optional(r), std::nullopt).has_value());
1544 EXPECT_EQ(IRect::Union(std::optional(r), std::nullopt).value(), r);
1545
1546 // NullOpt, Rect
1547 EXPECT_TRUE(IRect::Union(std::nullopt, r).has_value());
1548 EXPECT_EQ(IRect::Union(std::nullopt, r).value(), r);
1549
1550 // NullOpt, OptRect
1551 EXPECT_TRUE(IRect::Union(std::nullopt, std::optional(r)).has_value());
1552 EXPECT_EQ(IRect::Union(std::nullopt, std::optional(r)).value(), r);
1553 };
1554
1555 test1(a);
1556 test1(b);
1557 test1(c);
1558
1559 auto test2 = [](const IRect& a, const IRect& b, const IRect& u) {
1560 ASSERT_EQ(a.Union(b), u);
1561
1562 // Rect, OptRect
1563 EXPECT_TRUE(IRect::Union(a, std::optional(b)).has_value());
1564 EXPECT_EQ(IRect::Union(a, std::optional(b)).value(), u);
1565
1566 // OptRect, Rect
1567 EXPECT_TRUE(IRect::Union(std::optional(a), b).has_value());
1568 EXPECT_EQ(IRect::Union(std::optional(a), b).value(), u);
1569
1570 // OptRect, OptRect
1571 EXPECT_TRUE(IRect::Union(std::optional(a), std::optional(b)).has_value());
1572 EXPECT_EQ(IRect::Union(std::optional(a), std::optional(b)).value(), u);
1573 };
1574
1575 test2(a, b, IRect::MakeLTRB(0, 0, 200, 200));
1576 test2(a, c, IRect::MakeLTRB(0, 0, 200, 100));
1577 test2(b, c, IRect::MakeLTRB(100, 0, 200, 200));
1578}
1579
1580TEST(RectTest, RectIntersection) {
1581 auto check_nans = [](const Rect& a, const Rect& b, const std::string& label) {
1582 ASSERT_TRUE(a.IsFinite()) << label;
1583 ASSERT_TRUE(b.IsFinite()) << label;
1584
1585 for (int i = 1; i < 16; i++) {
1586 // NaN in a produces empty
1587 EXPECT_FALSE(swap_nan(a, i).Intersection(b).has_value())
1588 << label << ", index = " << i;
1589 // NaN in b produces empty
1590 EXPECT_FALSE(a.Intersection(swap_nan(b, i)).has_value())
1591 << label << ", index = " << i;
1592 // NaN in both is empty
1593 for (int j = 1; j < 16; j++) {
1594 EXPECT_FALSE(swap_nan(a, i).Intersection(swap_nan(b, j)).has_value())
1595 << label << ", indices = " << i << ", " << j;
1596 }
1597 }
1598 };
1599
1600 auto check_empty_flips = [](const Rect& a, const Rect& b,
1601 const std::string& label) {
1602 ASSERT_FALSE(a.IsEmpty());
1603 // b is allowed to be empty
1604
1605 // unflipped a vs flipped (empty) b yields a
1606 EXPECT_FALSE(a.Intersection(flip_lr(b)).has_value()) << label;
1607 EXPECT_FALSE(a.Intersection(flip_tb(b)).has_value()) << label;
1608 EXPECT_FALSE(a.Intersection(flip_lrtb(b)).has_value()) << label;
1609
1610 // flipped (empty) a vs unflipped b yields b
1611 EXPECT_FALSE(flip_lr(a).Intersection(b).has_value()) << label;
1612 EXPECT_FALSE(flip_tb(a).Intersection(b).has_value()) << label;
1613 EXPECT_FALSE(flip_lrtb(a).Intersection(b).has_value()) << label;
1614
1615 // flipped (empty) a vs flipped (empty) b yields empty
1616 EXPECT_FALSE(flip_lr(a).Intersection(flip_lr(b)).has_value()) << label;
1617 EXPECT_FALSE(flip_tb(a).Intersection(flip_tb(b)).has_value()) << label;
1618 EXPECT_FALSE(flip_lrtb(a).Intersection(flip_lrtb(b)).has_value()) << label;
1619 };
1620
1621 auto test_non_empty = [&check_nans, &check_empty_flips](
1622 const Rect& a, const Rect& b, const Rect& result) {
1623 ASSERT_FALSE(a.IsEmpty()) << a;
1624 // b is allowed to be empty
1625
1626 std::stringstream stream;
1627 stream << a << " union " << b;
1628 auto label = stream.str();
1629
1630 EXPECT_TRUE(a.Intersection(b).has_value()) << label;
1631 EXPECT_TRUE(b.Intersection(a).has_value()) << label;
1632 EXPECT_EQ(a.Intersection(b), result) << label;
1633 EXPECT_EQ(b.Intersection(a), result) << label;
1634 check_empty_flips(a, b, label);
1635 check_nans(a, b, label);
1636 };
1637
1638 auto test_empty = [&check_nans, &check_empty_flips](const Rect& a,
1639 const Rect& b) {
1640 ASSERT_FALSE(a.IsEmpty()) << a;
1641 // b is allowed to be empty
1642
1643 std::stringstream stream;
1644 stream << a << " union " << b;
1645 auto label = stream.str();
1646
1647 EXPECT_FALSE(a.Intersection(b).has_value()) << label;
1648 EXPECT_FALSE(b.Intersection(a).has_value()) << label;
1649 check_empty_flips(a, b, label);
1650 check_nans(a, b, label);
1651 };
1652
1653 {
1654 auto a = Rect::MakeXYWH(100, 100, 100, 100);
1655 auto b = Rect::MakeXYWH(0, 0, 0, 0);
1656
1657 test_empty(a, b);
1658 }
1659
1660 {
1661 auto a = Rect::MakeXYWH(100, 100, 100, 100);
1662 auto b = Rect::MakeXYWH(10, 10, 0, 0);
1663
1664 test_empty(a, b);
1665 }
1666
1667 {
1668 auto a = Rect::MakeXYWH(0, 0, 100, 100);
1669 auto b = Rect::MakeXYWH(10, 10, 100, 100);
1670 auto expected = Rect::MakeXYWH(10, 10, 90, 90);
1671
1672 test_non_empty(a, b, expected);
1673 }
1674
1675 {
1676 auto a = Rect::MakeXYWH(0, 0, 100, 100);
1677 auto b = Rect::MakeXYWH(100, 100, 100, 100);
1678
1679 test_empty(a, b);
1680 }
1681
1682 {
1683 auto a = Rect::MakeMaximum();
1684 auto b = Rect::MakeXYWH(10, 10, 300, 300);
1685
1686 test_non_empty(a, b, b);
1687 }
1688
1689 {
1690 auto a = Rect::MakeMaximum();
1691 auto b = Rect::MakeMaximum();
1692
1693 test_non_empty(a, b, Rect::MakeMaximum());
1694 }
1695}
1696
1697TEST(RectTest, OptRectIntersection) {
1698 auto a = Rect::MakeLTRB(0, 0, 110, 110);
1699 auto b = Rect::MakeLTRB(100, 100, 200, 200);
1700 auto c = Rect::MakeLTRB(100, 0, 200, 110);
1701
1702 // NullOpt, NullOpt
1703 EXPECT_FALSE(Rect::Intersection(std::nullopt, std::nullopt).has_value());
1704 EXPECT_EQ(Rect::Intersection(std::nullopt, std::nullopt), std::nullopt);
1705
1706 auto test1 = [](const Rect& r) {
1707 // Rect, NullOpt
1708 EXPECT_TRUE(Rect::Intersection(r, std::nullopt).has_value());
1709 EXPECT_EQ(Rect::Intersection(r, std::nullopt).value(), r);
1710
1711 // OptRect, NullOpt
1712 EXPECT_TRUE(Rect::Intersection(std::optional(r), std::nullopt).has_value());
1713 EXPECT_EQ(Rect::Intersection(std::optional(r), std::nullopt).value(), r);
1714
1715 // NullOpt, Rect
1716 EXPECT_TRUE(Rect::Intersection(std::nullopt, r).has_value());
1717 EXPECT_EQ(Rect::Intersection(std::nullopt, r).value(), r);
1718
1719 // NullOpt, OptRect
1720 EXPECT_TRUE(Rect::Intersection(std::nullopt, std::optional(r)).has_value());
1721 EXPECT_EQ(Rect::Intersection(std::nullopt, std::optional(r)).value(), r);
1722 };
1723
1724 test1(a);
1725 test1(b);
1726 test1(c);
1727
1728 auto test2 = [](const Rect& a, const Rect& b, const Rect& i) {
1729 ASSERT_EQ(a.Intersection(b), i);
1730
1731 // Rect, OptRect
1732 EXPECT_TRUE(Rect::Intersection(a, std::optional(b)).has_value());
1733 EXPECT_EQ(Rect::Intersection(a, std::optional(b)).value(), i);
1734
1735 // OptRect, Rect
1736 EXPECT_TRUE(Rect::Intersection(std::optional(a), b).has_value());
1737 EXPECT_EQ(Rect::Intersection(std::optional(a), b).value(), i);
1738
1739 // OptRect, OptRect
1740 EXPECT_TRUE(
1741 Rect::Intersection(std::optional(a), std::optional(b)).has_value());
1742 EXPECT_EQ(Rect::Intersection(std::optional(a), std::optional(b)).value(),
1743 i);
1744 };
1745
1746 test2(a, b, Rect::MakeLTRB(100, 100, 110, 110));
1747 test2(a, c, Rect::MakeLTRB(100, 0, 110, 110));
1748 test2(b, c, Rect::MakeLTRB(100, 100, 200, 110));
1749}
1750
1751TEST(RectTest, IRectIntersection) {
1752 auto check_empty_flips = [](const IRect& a, const IRect& b,
1753 const std::string& label) {
1754 ASSERT_FALSE(a.IsEmpty());
1755 // b is allowed to be empty
1756
1757 // unflipped a vs flipped (empty) b yields a
1758 EXPECT_FALSE(a.Intersection(flip_lr(b)).has_value()) << label;
1759 EXPECT_FALSE(a.Intersection(flip_tb(b)).has_value()) << label;
1760 EXPECT_FALSE(a.Intersection(flip_lrtb(b)).has_value()) << label;
1761
1762 // flipped (empty) a vs unflipped b yields b
1763 EXPECT_FALSE(flip_lr(a).Intersection(b).has_value()) << label;
1764 EXPECT_FALSE(flip_tb(a).Intersection(b).has_value()) << label;
1765 EXPECT_FALSE(flip_lrtb(a).Intersection(b).has_value()) << label;
1766
1767 // flipped (empty) a vs flipped (empty) b yields empty
1768 EXPECT_FALSE(flip_lr(a).Intersection(flip_lr(b)).has_value()) << label;
1769 EXPECT_FALSE(flip_tb(a).Intersection(flip_tb(b)).has_value()) << label;
1770 EXPECT_FALSE(flip_lrtb(a).Intersection(flip_lrtb(b)).has_value()) << label;
1771 };
1772
1773 auto test_non_empty = [&check_empty_flips](const IRect& a, const IRect& b,
1774 const IRect& result) {
1775 ASSERT_FALSE(a.IsEmpty()) << a;
1776 // b is allowed to be empty
1777
1778 std::stringstream stream;
1779 stream << a << " union " << b;
1780 auto label = stream.str();
1781
1782 EXPECT_TRUE(a.Intersection(b).has_value()) << label;
1783 EXPECT_TRUE(b.Intersection(a).has_value()) << label;
1784 EXPECT_EQ(a.Intersection(b), result) << label;
1785 EXPECT_EQ(b.Intersection(a), result) << label;
1786 check_empty_flips(a, b, label);
1787 };
1788
1789 auto test_empty = [&check_empty_flips](const IRect& a, const IRect& b) {
1790 ASSERT_FALSE(a.IsEmpty()) << a;
1791 // b is allowed to be empty
1792
1793 std::stringstream stream;
1794 stream << a << " union " << b;
1795 auto label = stream.str();
1796
1797 EXPECT_FALSE(a.Intersection(b).has_value()) << label;
1798 EXPECT_FALSE(b.Intersection(a).has_value()) << label;
1799 check_empty_flips(a, b, label);
1800 };
1801
1802 {
1803 auto a = IRect::MakeXYWH(100, 100, 100, 100);
1804 auto b = IRect::MakeXYWH(0, 0, 0, 0);
1805
1806 test_empty(a, b);
1807 }
1808
1809 {
1810 auto a = IRect::MakeXYWH(100, 100, 100, 100);
1811 auto b = IRect::MakeXYWH(10, 10, 0, 0);
1812
1813 test_empty(a, b);
1814 }
1815
1816 {
1817 auto a = IRect::MakeXYWH(0, 0, 100, 100);
1818 auto b = IRect::MakeXYWH(10, 10, 100, 100);
1819 auto expected = IRect::MakeXYWH(10, 10, 90, 90);
1820
1821 test_non_empty(a, b, expected);
1822 }
1823
1824 {
1825 auto a = IRect::MakeXYWH(0, 0, 100, 100);
1826 auto b = IRect::MakeXYWH(100, 100, 100, 100);
1827
1828 test_empty(a, b);
1829 }
1830
1831 {
1832 auto a = IRect::MakeMaximum();
1833 auto b = IRect::MakeXYWH(10, 10, 300, 300);
1834
1835 test_non_empty(a, b, b);
1836 }
1837
1838 {
1839 auto a = IRect::MakeMaximum();
1840 auto b = IRect::MakeMaximum();
1841
1842 test_non_empty(a, b, IRect::MakeMaximum());
1843 }
1844}
1845
1846TEST(RectTest, OptIRectIntersection) {
1847 auto a = IRect::MakeLTRB(0, 0, 110, 110);
1848 auto b = IRect::MakeLTRB(100, 100, 200, 200);
1849 auto c = IRect::MakeLTRB(100, 0, 200, 110);
1850
1851 // NullOpt, NullOpt
1852 EXPECT_FALSE(IRect::Intersection(std::nullopt, std::nullopt).has_value());
1853 EXPECT_EQ(IRect::Intersection(std::nullopt, std::nullopt), std::nullopt);
1854
1855 auto test1 = [](const IRect& r) {
1856 // Rect, NullOpt
1857 EXPECT_TRUE(IRect::Intersection(r, std::nullopt).has_value());
1858 EXPECT_EQ(IRect::Intersection(r, std::nullopt).value(), r);
1859
1860 // OptRect, NullOpt
1861 EXPECT_TRUE(
1862 IRect::Intersection(std::optional(r), std::nullopt).has_value());
1863 EXPECT_EQ(IRect::Intersection(std::optional(r), std::nullopt).value(), r);
1864
1865 // NullOpt, Rect
1866 EXPECT_TRUE(IRect::Intersection(std::nullopt, r).has_value());
1867 EXPECT_EQ(IRect::Intersection(std::nullopt, r).value(), r);
1868
1869 // NullOpt, OptRect
1870 EXPECT_TRUE(
1871 IRect::Intersection(std::nullopt, std::optional(r)).has_value());
1872 EXPECT_EQ(IRect::Intersection(std::nullopt, std::optional(r)).value(), r);
1873 };
1874
1875 test1(a);
1876 test1(b);
1877 test1(c);
1878
1879 auto test2 = [](const IRect& a, const IRect& b, const IRect& i) {
1880 ASSERT_EQ(a.Intersection(b), i);
1881
1882 // Rect, OptRect
1883 EXPECT_TRUE(IRect::Intersection(a, std::optional(b)).has_value());
1884 EXPECT_EQ(IRect::Intersection(a, std::optional(b)).value(), i);
1885
1886 // OptRect, Rect
1887 EXPECT_TRUE(IRect::Intersection(std::optional(a), b).has_value());
1888 EXPECT_EQ(IRect::Intersection(std::optional(a), b).value(), i);
1889
1890 // OptRect, OptRect
1891 EXPECT_TRUE(
1892 IRect::Intersection(std::optional(a), std::optional(b)).has_value());
1893 EXPECT_EQ(IRect::Intersection(std::optional(a), std::optional(b)).value(),
1894 i);
1895 };
1896
1897 test2(a, b, IRect::MakeLTRB(100, 100, 110, 110));
1898 test2(a, c, IRect::MakeLTRB(100, 0, 110, 110));
1899 test2(b, c, IRect::MakeLTRB(100, 100, 200, 110));
1900}
1901
1902TEST(RectTest, RectIntersectsWithRect) {
1903 auto check_nans = [](const Rect& a, const Rect& b, const std::string& label) {
1904 ASSERT_TRUE(a.IsFinite()) << label;
1905 ASSERT_TRUE(b.IsFinite()) << label;
1906
1907 for (int i = 1; i < 16; i++) {
1908 // NaN in a produces b
1909 EXPECT_FALSE(swap_nan(a, i).IntersectsWithRect(b))
1910 << label << ", index = " << i;
1911 // NaN in b produces a
1912 EXPECT_FALSE(a.IntersectsWithRect(swap_nan(b, i)))
1913 << label << ", index = " << i;
1914 // NaN in both is empty
1915 for (int j = 1; j < 16; j++) {
1916 EXPECT_FALSE(swap_nan(a, i).IntersectsWithRect(swap_nan(b, j)))
1917 << label << ", indices = " << i << ", " << j;
1918 }
1919 }
1920 };
1921
1922 auto check_empty_flips = [](const Rect& a, const Rect& b,
1923 const std::string& label) {
1924 ASSERT_FALSE(a.IsEmpty());
1925 // b is allowed to be empty
1926
1927 // unflipped a vs flipped (empty) b yields a
1928 EXPECT_FALSE(a.IntersectsWithRect(flip_lr(b))) << label;
1929 EXPECT_FALSE(a.IntersectsWithRect(flip_tb(b))) << label;
1930 EXPECT_FALSE(a.IntersectsWithRect(flip_lrtb(b))) << label;
1931
1932 // flipped (empty) a vs unflipped b yields b
1933 EXPECT_FALSE(flip_lr(a).IntersectsWithRect(b)) << label;
1934 EXPECT_FALSE(flip_tb(a).IntersectsWithRect(b)) << label;
1935 EXPECT_FALSE(flip_lrtb(a).IntersectsWithRect(b)) << label;
1936
1937 // flipped (empty) a vs flipped (empty) b yields empty
1938 EXPECT_FALSE(flip_lr(a).IntersectsWithRect(flip_lr(b))) << label;
1939 EXPECT_FALSE(flip_tb(a).IntersectsWithRect(flip_tb(b))) << label;
1940 EXPECT_FALSE(flip_lrtb(a).IntersectsWithRect(flip_lrtb(b))) << label;
1941 };
1942
1943 auto test_non_empty = [&check_nans, &check_empty_flips](const Rect& a,
1944 const Rect& b) {
1945 ASSERT_FALSE(a.IsEmpty()) << a;
1946 // b is allowed to be empty
1947
1948 std::stringstream stream;
1949 stream << a << " union " << b;
1950 auto label = stream.str();
1951
1952 EXPECT_TRUE(a.IntersectsWithRect(b)) << label;
1953 EXPECT_TRUE(b.IntersectsWithRect(a)) << label;
1954 check_empty_flips(a, b, label);
1955 check_nans(a, b, label);
1956 };
1957
1958 auto test_empty = [&check_nans, &check_empty_flips](const Rect& a,
1959 const Rect& b) {
1960 ASSERT_FALSE(a.IsEmpty()) << a;
1961 // b is allowed to be empty
1962
1963 std::stringstream stream;
1964 stream << a << " union " << b;
1965 auto label = stream.str();
1966
1967 EXPECT_FALSE(a.IntersectsWithRect(b)) << label;
1968 EXPECT_FALSE(b.IntersectsWithRect(a)) << label;
1969 check_empty_flips(a, b, label);
1970 check_nans(a, b, label);
1971 };
1972
1973 {
1974 auto a = Rect::MakeXYWH(100, 100, 100, 100);
1975 auto b = Rect::MakeXYWH(0, 0, 0, 0);
1976
1977 test_empty(a, b);
1978 }
1979
1980 {
1981 auto a = Rect::MakeXYWH(100, 100, 100, 100);
1982 auto b = Rect::MakeXYWH(10, 10, 0, 0);
1983
1984 test_empty(a, b);
1985 }
1986
1987 {
1988 auto a = Rect::MakeXYWH(0, 0, 100, 100);
1989 auto b = Rect::MakeXYWH(10, 10, 100, 100);
1990
1991 test_non_empty(a, b);
1992 }
1993
1994 {
1995 auto a = Rect::MakeXYWH(0, 0, 100, 100);
1996 auto b = Rect::MakeXYWH(100, 100, 100, 100);
1997
1998 test_empty(a, b);
1999 }
2000
2001 {
2002 auto a = Rect::MakeMaximum();
2003 auto b = Rect::MakeXYWH(10, 10, 100, 100);
2004
2005 test_non_empty(a, b);
2006 }
2007
2008 {
2009 auto a = Rect::MakeMaximum();
2010 auto b = Rect::MakeMaximum();
2011
2012 test_non_empty(a, b);
2013 }
2014}
2015
2016TEST(RectTest, IRectIntersectsWithRect) {
2017 auto check_empty_flips = [](const IRect& a, const IRect& b,
2018 const std::string& label) {
2019 ASSERT_FALSE(a.IsEmpty());
2020 // b is allowed to be empty
2021
2022 // unflipped a vs flipped (empty) b yields a
2023 EXPECT_FALSE(a.IntersectsWithRect(flip_lr(b))) << label;
2024 EXPECT_FALSE(a.IntersectsWithRect(flip_tb(b))) << label;
2025 EXPECT_FALSE(a.IntersectsWithRect(flip_lrtb(b))) << label;
2026
2027 // flipped (empty) a vs unflipped b yields b
2028 EXPECT_FALSE(flip_lr(a).IntersectsWithRect(b)) << label;
2029 EXPECT_FALSE(flip_tb(a).IntersectsWithRect(b)) << label;
2030 EXPECT_FALSE(flip_lrtb(a).IntersectsWithRect(b)) << label;
2031
2032 // flipped (empty) a vs flipped (empty) b yields empty
2033 EXPECT_FALSE(flip_lr(a).IntersectsWithRect(flip_lr(b))) << label;
2034 EXPECT_FALSE(flip_tb(a).IntersectsWithRect(flip_tb(b))) << label;
2035 EXPECT_FALSE(flip_lrtb(a).IntersectsWithRect(flip_lrtb(b))) << label;
2036 };
2037
2038 auto test_non_empty = [&check_empty_flips](const IRect& a, const IRect& b) {
2039 ASSERT_FALSE(a.IsEmpty()) << a;
2040 // b is allowed to be empty
2041
2042 std::stringstream stream;
2043 stream << a << " union " << b;
2044 auto label = stream.str();
2045
2046 EXPECT_TRUE(a.IntersectsWithRect(b)) << label;
2047 EXPECT_TRUE(b.IntersectsWithRect(a)) << label;
2048 check_empty_flips(a, b, label);
2049 };
2050
2051 auto test_empty = [&check_empty_flips](const IRect& a, const IRect& b) {
2052 ASSERT_FALSE(a.IsEmpty()) << a;
2053 // b is allowed to be empty
2054
2055 std::stringstream stream;
2056 stream << a << " union " << b;
2057 auto label = stream.str();
2058
2059 EXPECT_FALSE(a.IntersectsWithRect(b)) << label;
2060 EXPECT_FALSE(b.IntersectsWithRect(a)) << label;
2061 check_empty_flips(a, b, label);
2062 };
2063
2064 {
2065 auto a = IRect::MakeXYWH(100, 100, 100, 100);
2066 auto b = IRect::MakeXYWH(0, 0, 0, 0);
2067
2068 test_empty(a, b);
2069 }
2070
2071 {
2072 auto a = IRect::MakeXYWH(100, 100, 100, 100);
2073 auto b = IRect::MakeXYWH(10, 10, 0, 0);
2074
2075 test_empty(a, b);
2076 }
2077
2078 {
2079 auto a = IRect::MakeXYWH(0, 0, 100, 100);
2080 auto b = IRect::MakeXYWH(10, 10, 100, 100);
2081
2082 test_non_empty(a, b);
2083 }
2084
2085 {
2086 auto a = IRect::MakeXYWH(0, 0, 100, 100);
2087 auto b = IRect::MakeXYWH(100, 100, 100, 100);
2088
2089 test_empty(a, b);
2090 }
2091
2092 {
2093 auto a = IRect::MakeMaximum();
2094 auto b = IRect::MakeXYWH(10, 10, 100, 100);
2095
2096 test_non_empty(a, b);
2097 }
2098
2099 {
2100 auto a = IRect::MakeMaximum();
2101 auto b = IRect::MakeMaximum();
2102
2103 test_non_empty(a, b);
2104 }
2105}
2106
2107TEST(RectTest, RectContainsPoint) {
2108 auto check_nans = [](const Rect& rect, const Point& point,
2109 const std::string& label) {
2110 ASSERT_TRUE(rect.IsFinite()) << label;
2111 ASSERT_TRUE(point.IsFinite()) << label;
2112
2113 for (int i = 1; i < 16; i++) {
2114 EXPECT_FALSE(swap_nan(rect, i).Contains(point))
2115 << label << ", index = " << i;
2116 for (int j = 1; j < 4; j++) {
2117 EXPECT_FALSE(swap_nan(rect, i).Contains(swap_nan(point, j)))
2118 << label << ", indices = " << i << ", " << j;
2119 }
2120 }
2121 };
2122
2123 auto check_empty_flips = [](const Rect& rect, const Point& point,
2124 const std::string& label) {
2125 ASSERT_FALSE(rect.IsEmpty());
2126
2127 EXPECT_FALSE(flip_lr(rect).Contains(point)) << label;
2128 EXPECT_FALSE(flip_tb(rect).Contains(point)) << label;
2129 EXPECT_FALSE(flip_lrtb(rect).Contains(point)) << label;
2130 };
2131
2132 auto test_inside = [&check_nans, &check_empty_flips](const Rect& rect,
2133 const Point& point) {
2134 ASSERT_FALSE(rect.IsEmpty()) << rect;
2135
2136 std::stringstream stream;
2137 stream << rect << " contains " << point;
2138 auto label = stream.str();
2139
2140 EXPECT_TRUE(rect.Contains(point)) << label;
2141 check_empty_flips(rect, point, label);
2142 check_nans(rect, point, label);
2143 };
2144
2145 auto test_outside = [&check_nans, &check_empty_flips](const Rect& rect,
2146 const Point& point) {
2147 ASSERT_FALSE(rect.IsEmpty()) << rect;
2148
2149 std::stringstream stream;
2150 stream << rect << " contains " << point;
2151 auto label = stream.str();
2152
2153 EXPECT_FALSE(rect.Contains(point)) << label;
2154 check_empty_flips(rect, point, label);
2155 check_nans(rect, point, label);
2156 };
2157
2158 {
2159 // Origin is inclusive
2160 auto r = Rect::MakeXYWH(100, 100, 100, 100);
2161 auto p = Point(100, 100);
2162
2163 test_inside(r, p);
2164 }
2165 {
2166 // Size is exclusive
2167 auto r = Rect::MakeXYWH(100, 100, 100, 100);
2168 auto p = Point(200, 200);
2169
2170 test_outside(r, p);
2171 }
2172 {
2173 auto r = Rect::MakeXYWH(100, 100, 100, 100);
2174 auto p = Point(99, 99);
2175
2176 test_outside(r, p);
2177 }
2178 {
2179 auto r = Rect::MakeXYWH(100, 100, 100, 100);
2180 auto p = Point(199, 199);
2181
2182 test_inside(r, p);
2183 }
2184
2185 {
2186 auto r = Rect::MakeMaximum();
2187 auto p = Point(199, 199);
2188
2189 test_inside(r, p);
2190 }
2191}
2192
2193TEST(RectTest, IRectContainsIPoint) {
2194 auto check_empty_flips = [](const IRect& rect, const IPoint& point,
2195 const std::string& label) {
2196 ASSERT_FALSE(rect.IsEmpty());
2197
2198 EXPECT_FALSE(flip_lr(rect).Contains(point)) << label;
2199 EXPECT_FALSE(flip_tb(rect).Contains(point)) << label;
2200 EXPECT_FALSE(flip_lrtb(rect).Contains(point)) << label;
2201 };
2202
2203 auto test_inside = [&check_empty_flips](const IRect& rect,
2204 const IPoint& point) {
2205 ASSERT_FALSE(rect.IsEmpty()) << rect;
2206
2207 std::stringstream stream;
2208 stream << rect << " contains " << point;
2209 auto label = stream.str();
2210
2211 EXPECT_TRUE(rect.Contains(point)) << label;
2212 check_empty_flips(rect, point, label);
2213 };
2214
2215 auto test_outside = [&check_empty_flips](const IRect& rect,
2216 const IPoint& point) {
2217 ASSERT_FALSE(rect.IsEmpty()) << rect;
2218
2219 std::stringstream stream;
2220 stream << rect << " contains " << point;
2221 auto label = stream.str();
2222
2223 EXPECT_FALSE(rect.Contains(point)) << label;
2224 check_empty_flips(rect, point, label);
2225 };
2226
2227 {
2228 // Origin is inclusive
2229 auto r = IRect::MakeXYWH(100, 100, 100, 100);
2230 auto p = IPoint(100, 100);
2231
2232 test_inside(r, p);
2233 }
2234 {
2235 // Size is exclusive
2236 auto r = IRect::MakeXYWH(100, 100, 100, 100);
2237 auto p = IPoint(200, 200);
2238
2239 test_outside(r, p);
2240 }
2241 {
2242 auto r = IRect::MakeXYWH(100, 100, 100, 100);
2243 auto p = IPoint(99, 99);
2244
2245 test_outside(r, p);
2246 }
2247 {
2248 auto r = IRect::MakeXYWH(100, 100, 100, 100);
2249 auto p = IPoint(199, 199);
2250
2251 test_inside(r, p);
2252 }
2253
2254 {
2255 auto r = IRect::MakeMaximum();
2256 auto p = IPoint(199, 199);
2257
2258 test_inside(r, p);
2259 }
2260}
2261
2262TEST(RectTest, RectContainsInclusivePoint) {
2263 auto check_nans = [](const Rect& rect, const Point& point,
2264 const std::string& label) {
2265 ASSERT_TRUE(rect.IsFinite()) << label;
2266 ASSERT_TRUE(point.IsFinite()) << label;
2267
2268 for (int i = 1; i < 16; i++) {
2269 EXPECT_FALSE(swap_nan(rect, i).ContainsInclusive(point))
2270 << label << ", index = " << i;
2271 for (int j = 1; j < 4; j++) {
2272 EXPECT_FALSE(swap_nan(rect, i).ContainsInclusive(swap_nan(point, j)))
2273 << label << ", indices = " << i << ", " << j;
2274 }
2275 }
2276 };
2277
2278 auto check_empty_flips = [](const Rect& rect, const Point& point,
2279 const std::string& label) {
2280 ASSERT_FALSE(rect.IsEmpty());
2281
2282 EXPECT_FALSE(flip_lr(rect).ContainsInclusive(point)) << label;
2283 EXPECT_FALSE(flip_tb(rect).ContainsInclusive(point)) << label;
2284 EXPECT_FALSE(flip_lrtb(rect).ContainsInclusive(point)) << label;
2285 };
2286
2287 auto test_inside = [&check_nans, &check_empty_flips](const Rect& rect,
2288 const Point& point) {
2289 ASSERT_FALSE(rect.IsEmpty()) << rect;
2290
2291 std::stringstream stream;
2292 stream << rect << " contains " << point;
2293 auto label = stream.str();
2294
2295 EXPECT_TRUE(rect.ContainsInclusive(point)) << label;
2296 check_empty_flips(rect, point, label);
2297 check_nans(rect, point, label);
2298 };
2299
2300 auto test_outside = [&check_nans, &check_empty_flips](const Rect& rect,
2301 const Point& point) {
2302 ASSERT_FALSE(rect.IsEmpty()) << rect;
2303
2304 std::stringstream stream;
2305 stream << rect << " contains " << point;
2306 auto label = stream.str();
2307
2308 EXPECT_FALSE(rect.ContainsInclusive(point)) << label;
2309 check_empty_flips(rect, point, label);
2310 check_nans(rect, point, label);
2311 };
2312
2313 {
2314 // Origin is inclusive
2315 auto r = Rect::MakeXYWH(100, 100, 100, 100);
2316 auto p = Point(100, 100);
2317
2318 test_inside(r, p);
2319 }
2320 {
2321 // Size is inclusive
2322 auto r = Rect::MakeXYWH(100, 100, 100, 100);
2323 auto p = Point(200, 200);
2324
2325 test_inside(r, p);
2326 }
2327 {
2328 // Size + epsilon is exclusive
2329 auto r = Rect::MakeXYWH(100, 100, 100, 100);
2330 auto p = Point(200 + kEhCloseEnough, 200 + kEhCloseEnough);
2331
2332 test_outside(r, p);
2333 }
2334 {
2335 auto r = Rect::MakeXYWH(100, 100, 100, 100);
2336 auto p = Point(99, 99);
2337
2338 test_outside(r, p);
2339 }
2340 {
2341 auto r = Rect::MakeXYWH(100, 100, 100, 100);
2342 auto p = Point(199, 199);
2343
2344 test_inside(r, p);
2345 }
2346
2347 {
2348 auto r = Rect::MakeMaximum();
2349 auto p = Point(199, 199);
2350
2351 test_inside(r, p);
2352 }
2353}
2354
2355TEST(RectTest, IRectContainsInclusiveIPoint) {
2356 auto check_empty_flips = [](const IRect& rect, const IPoint& point,
2357 const std::string& label) {
2358 ASSERT_FALSE(rect.IsEmpty());
2359
2360 EXPECT_FALSE(flip_lr(rect).ContainsInclusive(point)) << label;
2361 EXPECT_FALSE(flip_tb(rect).ContainsInclusive(point)) << label;
2362 EXPECT_FALSE(flip_lrtb(rect).ContainsInclusive(point)) << label;
2363 };
2364
2365 auto test_inside = [&check_empty_flips](const IRect& rect,
2366 const IPoint& point) {
2367 ASSERT_FALSE(rect.IsEmpty()) << rect;
2368
2369 std::stringstream stream;
2370 stream << rect << " contains " << point;
2371 auto label = stream.str();
2372
2373 EXPECT_TRUE(rect.ContainsInclusive(point)) << label;
2374 check_empty_flips(rect, point, label);
2375 };
2376
2377 auto test_outside = [&check_empty_flips](const IRect& rect,
2378 const IPoint& point) {
2379 ASSERT_FALSE(rect.IsEmpty()) << rect;
2380
2381 std::stringstream stream;
2382 stream << rect << " contains " << point;
2383 auto label = stream.str();
2384
2385 EXPECT_FALSE(rect.ContainsInclusive(point)) << label;
2386 check_empty_flips(rect, point, label);
2387 };
2388
2389 {
2390 // Origin is inclusive
2391 auto r = IRect::MakeXYWH(100, 100, 100, 100);
2392 auto p = IPoint(100, 100);
2393
2394 test_inside(r, p);
2395 }
2396 {
2397 // Size is inclusive
2398 auto r = IRect::MakeXYWH(100, 100, 100, 100);
2399 auto p = IPoint(200, 200);
2400
2401 test_inside(r, p);
2402 }
2403 {
2404 // Size + "epsilon" is exclusive
2405 auto r = IRect::MakeXYWH(100, 100, 100, 100);
2406 auto p = IPoint(201, 201);
2407
2408 test_outside(r, p);
2409 }
2410 {
2411 auto r = IRect::MakeXYWH(100, 100, 100, 100);
2412 auto p = IPoint(99, 99);
2413
2414 test_outside(r, p);
2415 }
2416 {
2417 auto r = IRect::MakeXYWH(100, 100, 100, 100);
2418 auto p = IPoint(199, 199);
2419
2420 test_inside(r, p);
2421 }
2422
2423 {
2424 auto r = IRect::MakeMaximum();
2425 auto p = IPoint(199, 199);
2426
2427 test_inside(r, p);
2428 }
2429}
2430
2431TEST(RectTest, RectContainsRect) {
2432 auto check_nans = [](const Rect& a, const Rect& b, const std::string& label) {
2433 ASSERT_TRUE(a.IsFinite()) << label;
2434 ASSERT_TRUE(b.IsFinite()) << label;
2435 ASSERT_FALSE(a.IsEmpty());
2436
2437 for (int i = 1; i < 16; i++) {
2438 // NaN in a produces false
2439 EXPECT_FALSE(swap_nan(a, i).Contains(b)) << label << ", index = " << i;
2440 // NaN in b produces false
2441 EXPECT_TRUE(a.Contains(swap_nan(b, i))) << label << ", index = " << i;
2442 // NaN in both is false
2443 for (int j = 1; j < 16; j++) {
2444 EXPECT_FALSE(swap_nan(a, i).Contains(swap_nan(b, j)))
2445 << label << ", indices = " << i << ", " << j;
2446 }
2447 }
2448 };
2449
2450 auto check_empty_flips = [](const Rect& a, const Rect& b,
2451 const std::string& label) {
2452 ASSERT_FALSE(a.IsEmpty());
2453 // test b rects are allowed to have 0 w/h, but not be backwards
2454 ASSERT_FALSE(b.GetLeft() > b.GetRight() || b.GetTop() > b.GetBottom());
2455
2456 // unflipped a vs flipped (empty) b yields false
2457 EXPECT_TRUE(a.Contains(flip_lr(b))) << label;
2458 EXPECT_TRUE(a.Contains(flip_tb(b))) << label;
2459 EXPECT_TRUE(a.Contains(flip_lrtb(b))) << label;
2460
2461 // flipped (empty) a vs unflipped b yields false
2462 EXPECT_FALSE(flip_lr(a).Contains(b)) << label;
2463 EXPECT_FALSE(flip_tb(a).Contains(b)) << label;
2464 EXPECT_FALSE(flip_lrtb(a).Contains(b)) << label;
2465
2466 // flipped (empty) a vs flipped (empty) b yields empty
2467 EXPECT_FALSE(flip_lr(a).Contains(flip_lr(b))) << label;
2468 EXPECT_FALSE(flip_tb(a).Contains(flip_tb(b))) << label;
2469 EXPECT_FALSE(flip_lrtb(a).Contains(flip_lrtb(b))) << label;
2470 };
2471
2472 auto test_inside = [&check_nans, &check_empty_flips](const Rect& a,
2473 const Rect& b) {
2474 ASSERT_FALSE(a.IsEmpty()) << a;
2475 // test b rects are allowed to have 0 w/h, but not be backwards
2476 ASSERT_FALSE(b.GetLeft() > b.GetRight() || b.GetTop() > b.GetBottom());
2477
2478 std::stringstream stream;
2479 stream << a << " contains " << b;
2480 auto label = stream.str();
2481
2482 EXPECT_TRUE(a.Contains(b)) << label;
2483 check_empty_flips(a, b, label);
2484 check_nans(a, b, label);
2485 };
2486
2487 auto test_not_inside = [&check_nans, &check_empty_flips](const Rect& a,
2488 const Rect& b) {
2489 ASSERT_FALSE(a.IsEmpty()) << a;
2490 // If b was empty, it would be contained and should not be tested with
2491 // this function - use |test_inside| instead.
2492 ASSERT_FALSE(b.IsEmpty()) << b;
2493
2494 std::stringstream stream;
2495 stream << a << " contains " << b;
2496 auto label = stream.str();
2497
2498 EXPECT_FALSE(a.Contains(b)) << label;
2499 check_empty_flips(a, b, label);
2500 check_nans(a, b, label);
2501 };
2502
2503 {
2504 auto a = Rect::MakeXYWH(100, 100, 100, 100);
2505
2506 test_inside(a, a);
2507 }
2508 {
2509 auto a = Rect::MakeXYWH(100, 100, 100, 100);
2510 auto b = Rect::MakeXYWH(0, 0, 0, 0);
2511
2512 test_inside(a, b);
2513 }
2514 {
2515 auto a = Rect::MakeXYWH(100, 100, 100, 100);
2516 auto b = Rect::MakeXYWH(150, 150, 20, 20);
2517
2518 test_inside(a, b);
2519 }
2520 {
2521 auto a = Rect::MakeXYWH(100, 100, 100, 100);
2522 auto b = Rect::MakeXYWH(150, 150, 100, 100);
2523
2524 test_not_inside(a, b);
2525 }
2526 {
2527 auto a = Rect::MakeXYWH(100, 100, 100, 100);
2528 auto b = Rect::MakeXYWH(50, 50, 100, 100);
2529
2530 test_not_inside(a, b);
2531 }
2532 {
2533 auto a = Rect::MakeXYWH(100, 100, 100, 100);
2534 auto b = Rect::MakeXYWH(0, 0, 300, 300);
2535
2536 test_not_inside(a, b);
2537 }
2538 {
2539 auto a = Rect::MakeMaximum();
2540 auto b = Rect::MakeXYWH(0, 0, 300, 300);
2541
2542 test_inside(a, b);
2543 }
2544}
2545
2546TEST(RectTest, IRectContainsIRect) {
2547 auto check_empty_flips = [](const IRect& a, const IRect& b,
2548 const std::string& label) {
2549 ASSERT_FALSE(a.IsEmpty());
2550 // test b rects are allowed to have 0 w/h, but not be backwards
2551 ASSERT_FALSE(b.GetLeft() > b.GetRight() || b.GetTop() > b.GetBottom());
2552
2553 // unflipped a vs flipped (empty) b yields true
2554 EXPECT_TRUE(a.Contains(flip_lr(b))) << label;
2555 EXPECT_TRUE(a.Contains(flip_tb(b))) << label;
2556 EXPECT_TRUE(a.Contains(flip_lrtb(b))) << label;
2557
2558 // flipped (empty) a vs unflipped b yields false
2559 EXPECT_FALSE(flip_lr(a).Contains(b)) << label;
2560 EXPECT_FALSE(flip_tb(a).Contains(b)) << label;
2561 EXPECT_FALSE(flip_lrtb(a).Contains(b)) << label;
2562
2563 // flipped (empty) a vs flipped (empty) b yields empty
2564 EXPECT_FALSE(flip_lr(a).Contains(flip_lr(b))) << label;
2565 EXPECT_FALSE(flip_tb(a).Contains(flip_tb(b))) << label;
2566 EXPECT_FALSE(flip_lrtb(a).Contains(flip_lrtb(b))) << label;
2567 };
2568
2569 auto test_inside = [&check_empty_flips](const IRect& a, const IRect& b) {
2570 ASSERT_FALSE(a.IsEmpty()) << a;
2571 // test b rects are allowed to have 0 w/h, but not be backwards
2572 ASSERT_FALSE(b.GetLeft() > b.GetRight() || b.GetTop() > b.GetBottom());
2573
2574 std::stringstream stream;
2575 stream << a << " contains " << b;
2576 auto label = stream.str();
2577
2578 EXPECT_TRUE(a.Contains(b)) << label;
2579 check_empty_flips(a, b, label);
2580 };
2581
2582 auto test_not_inside = [&check_empty_flips](const IRect& a, const IRect& b) {
2583 ASSERT_FALSE(a.IsEmpty()) << a;
2584 // If b was empty, it would be contained and should not be tested with
2585 // this function - use |test_inside| instead.
2586 ASSERT_FALSE(b.IsEmpty()) << b;
2587
2588 std::stringstream stream;
2589 stream << a << " contains " << b;
2590 auto label = stream.str();
2591
2592 EXPECT_FALSE(a.Contains(b)) << label;
2593 check_empty_flips(a, b, label);
2594 };
2595
2596 {
2597 auto a = IRect::MakeXYWH(100, 100, 100, 100);
2598
2599 test_inside(a, a);
2600 }
2601 {
2602 auto a = IRect::MakeXYWH(100, 100, 100, 100);
2603 auto b = IRect::MakeXYWH(0, 0, 0, 0);
2604
2605 test_inside(a, b);
2606 }
2607 {
2608 auto a = IRect::MakeXYWH(100, 100, 100, 100);
2609 auto b = IRect::MakeXYWH(150, 150, 20, 20);
2610
2611 test_inside(a, b);
2612 }
2613 {
2614 auto a = IRect::MakeXYWH(100, 100, 100, 100);
2615 auto b = IRect::MakeXYWH(150, 150, 100, 100);
2616
2617 test_not_inside(a, b);
2618 }
2619 {
2620 auto a = IRect::MakeXYWH(100, 100, 100, 100);
2621 auto b = IRect::MakeXYWH(50, 50, 100, 100);
2622
2623 test_not_inside(a, b);
2624 }
2625 {
2626 auto a = IRect::MakeXYWH(100, 100, 100, 100);
2627 auto b = IRect::MakeXYWH(0, 0, 300, 300);
2628
2629 test_not_inside(a, b);
2630 }
2631 {
2632 auto a = IRect::MakeMaximum();
2633 auto b = IRect::MakeXYWH(0, 0, 300, 300);
2634
2635 test_inside(a, b);
2636 }
2637}
2638
2639TEST(RectTest, RectCutOut) {
2640 Rect cull_rect = Rect::MakeLTRB(20, 20, 40, 40);
2641
2642 auto check_nans = [&cull_rect](const Rect& diff_rect,
2643 const std::string& label) {
2644 EXPECT_TRUE(cull_rect.IsFinite()) << label;
2645 EXPECT_TRUE(diff_rect.IsFinite()) << label;
2646
2647 for (int i = 1; i < 16; i++) {
2648 // NaN in cull_rect produces empty
2649 EXPECT_FALSE(swap_nan(cull_rect, i).Cutout(diff_rect).has_value())
2650 << label << ", index " << i;
2651 EXPECT_EQ(swap_nan(cull_rect, i).CutoutOrEmpty(diff_rect), Rect())
2652 << label << ", index " << i;
2653
2654 // NaN in diff_rect is nop
2655 EXPECT_TRUE(cull_rect.Cutout(swap_nan(diff_rect, i)).has_value())
2656 << label << ", index " << i;
2657 EXPECT_EQ(cull_rect.CutoutOrEmpty(swap_nan(diff_rect, i)), cull_rect)
2658 << label << ", index " << i;
2659
2660 for (int j = 1; j < 16; j++) {
2661 // NaN in both is also empty
2662 EXPECT_FALSE(
2663 swap_nan(cull_rect, i).Cutout(swap_nan(diff_rect, j)).has_value())
2664 << label << ", indices " << i << ", " << j;
2665 EXPECT_EQ(swap_nan(cull_rect, i).CutoutOrEmpty(swap_nan(diff_rect, j)),
2666 Rect())
2667 << label << ", indices " << i << ", " << j;
2668 }
2669 }
2670 };
2671
2672 auto check_empty_flips = [&cull_rect](const Rect& diff_rect,
2673 const std::string& label) {
2674 EXPECT_FALSE(cull_rect.IsEmpty()) << label;
2675 EXPECT_FALSE(diff_rect.IsEmpty()) << label;
2676
2677 // unflipped cull_rect vs flipped(empty) diff_rect
2678 // == cull_rect
2679 EXPECT_TRUE(cull_rect.Cutout(flip_lr(diff_rect)).has_value()) << label;
2680 EXPECT_EQ(cull_rect.Cutout(flip_lr(diff_rect)), cull_rect) << label;
2681 EXPECT_TRUE(cull_rect.Cutout(flip_tb(diff_rect)).has_value()) << label;
2682 EXPECT_EQ(cull_rect.Cutout(flip_tb(diff_rect)), cull_rect) << label;
2683 EXPECT_TRUE(cull_rect.Cutout(flip_lrtb(diff_rect)).has_value()) << label;
2684 EXPECT_EQ(cull_rect.Cutout(flip_lrtb(diff_rect)), cull_rect) << label;
2685
2686 // flipped(empty) cull_rect vs unflipped diff_rect
2687 // == empty
2688 EXPECT_FALSE(flip_lr(cull_rect).Cutout(diff_rect).has_value()) << label;
2689 EXPECT_EQ(flip_lr(cull_rect).CutoutOrEmpty(diff_rect), Rect()) << label;
2690 EXPECT_FALSE(flip_tb(cull_rect).Cutout(diff_rect).has_value()) << label;
2691 EXPECT_EQ(flip_tb(cull_rect).CutoutOrEmpty(diff_rect), Rect()) << label;
2692 EXPECT_FALSE(flip_lrtb(cull_rect).Cutout(diff_rect).has_value()) << label;
2693 EXPECT_EQ(flip_lrtb(cull_rect).CutoutOrEmpty(diff_rect), Rect()) << label;
2694
2695 // flipped(empty) cull_rect vs flipped(empty) diff_rect
2696 // == empty
2697 EXPECT_FALSE(flip_lr(cull_rect).Cutout(flip_lr(diff_rect)).has_value())
2698 << label;
2699 EXPECT_EQ(flip_lr(cull_rect).CutoutOrEmpty(flip_lr(diff_rect)), Rect())
2700 << label;
2701 EXPECT_FALSE(flip_tb(cull_rect).Cutout(flip_tb(diff_rect)).has_value())
2702 << label;
2703 EXPECT_EQ(flip_tb(cull_rect).CutoutOrEmpty(flip_tb(diff_rect)), Rect())
2704 << label;
2705 EXPECT_FALSE(flip_lrtb(cull_rect).Cutout(flip_lrtb(diff_rect)).has_value())
2706 << label;
2707 EXPECT_EQ(flip_lrtb(cull_rect).CutoutOrEmpty(flip_lrtb(diff_rect)), Rect())
2708 << label;
2709 };
2710
2711 auto non_reducing = [&cull_rect, &check_empty_flips, &check_nans](
2712 const Rect& diff_rect, const std::string& label) {
2713 EXPECT_EQ(cull_rect.Cutout(diff_rect), cull_rect) << label;
2714 EXPECT_EQ(cull_rect.CutoutOrEmpty(diff_rect), cull_rect) << label;
2715 check_empty_flips(diff_rect, label);
2716 check_nans(diff_rect, label);
2717 };
2718
2719 auto reducing = [&cull_rect, &check_empty_flips, &check_nans](
2720 const Rect& diff_rect, const Rect& result_rect,
2721 const std::string& label) {
2722 EXPECT_TRUE(!result_rect.IsEmpty());
2723 EXPECT_EQ(cull_rect.Cutout(diff_rect), result_rect) << label;
2724 EXPECT_EQ(cull_rect.CutoutOrEmpty(diff_rect), result_rect) << label;
2725 check_empty_flips(diff_rect, label);
2726 check_nans(diff_rect, label);
2727 };
2728
2729 auto emptying = [&cull_rect, &check_empty_flips, &check_nans](
2730 const Rect& diff_rect, const std::string& label) {
2731 EXPECT_FALSE(cull_rect.Cutout(diff_rect).has_value()) << label;
2732 EXPECT_EQ(cull_rect.CutoutOrEmpty(diff_rect), Rect()) << label;
2733 check_empty_flips(diff_rect, label);
2734 check_nans(diff_rect, label);
2735 };
2736
2737 // Skim the corners and edge
2738 non_reducing(Rect::MakeLTRB(10, 10, 20, 20), "outside UL corner");
2739 non_reducing(Rect::MakeLTRB(20, 10, 40, 20), "Above");
2740 non_reducing(Rect::MakeLTRB(40, 10, 50, 20), "outside UR corner");
2741 non_reducing(Rect::MakeLTRB(40, 20, 50, 40), "Right");
2742 non_reducing(Rect::MakeLTRB(40, 40, 50, 50), "outside LR corner");
2743 non_reducing(Rect::MakeLTRB(20, 40, 40, 50), "Below");
2744 non_reducing(Rect::MakeLTRB(10, 40, 20, 50), "outside LR corner");
2745 non_reducing(Rect::MakeLTRB(10, 20, 20, 40), "Left");
2746
2747 // Overlap corners
2748 non_reducing(Rect::MakeLTRB(15, 15, 25, 25), "covering UL corner");
2749 non_reducing(Rect::MakeLTRB(35, 15, 45, 25), "covering UR corner");
2750 non_reducing(Rect::MakeLTRB(35, 35, 45, 45), "covering LR corner");
2751 non_reducing(Rect::MakeLTRB(15, 35, 25, 45), "covering LL corner");
2752
2753 // Overlap edges, but not across an entire side
2754 non_reducing(Rect::MakeLTRB(20, 15, 39, 25), "Top edge left-biased");
2755 non_reducing(Rect::MakeLTRB(21, 15, 40, 25), "Top edge, right biased");
2756 non_reducing(Rect::MakeLTRB(35, 20, 45, 39), "Right edge, top-biased");
2757 non_reducing(Rect::MakeLTRB(35, 21, 45, 40), "Right edge, bottom-biased");
2758 non_reducing(Rect::MakeLTRB(20, 35, 39, 45), "Bottom edge, left-biased");
2759 non_reducing(Rect::MakeLTRB(21, 35, 40, 45), "Bottom edge, right-biased");
2760 non_reducing(Rect::MakeLTRB(15, 20, 25, 39), "Left edge, top-biased");
2761 non_reducing(Rect::MakeLTRB(15, 21, 25, 40), "Left edge, bottom-biased");
2762
2763 // Slice all the way through the middle
2764 non_reducing(Rect::MakeLTRB(25, 15, 35, 45), "Vertical interior slice");
2765 non_reducing(Rect::MakeLTRB(15, 25, 45, 35), "Horizontal interior slice");
2766
2767 // Slice off each edge
2768 reducing(Rect::MakeLTRB(20, 15, 40, 25), //
2769 Rect::MakeLTRB(20, 25, 40, 40), //
2770 "Slice off top");
2771 reducing(Rect::MakeLTRB(35, 20, 45, 40), //
2772 Rect::MakeLTRB(20, 20, 35, 40), //
2773 "Slice off right");
2774 reducing(Rect::MakeLTRB(20, 35, 40, 45), //
2775 Rect::MakeLTRB(20, 20, 40, 35), //
2776 "Slice off bottom");
2777 reducing(Rect::MakeLTRB(15, 20, 25, 40), //
2778 Rect::MakeLTRB(25, 20, 40, 40), //
2779 "Slice off left");
2780
2781 // cull rect contains diff rect
2782 non_reducing(Rect::MakeLTRB(21, 21, 39, 39), "Contained, non-covering");
2783
2784 // cull rect equals diff rect
2785 emptying(cull_rect, "Perfectly covering");
2786
2787 // diff rect contains cull rect
2788 emptying(Rect::MakeLTRB(15, 15, 45, 45), "Smothering");
2789}
2790
2791TEST(RectTest, IRectCutOut) {
2792 IRect cull_rect = IRect::MakeLTRB(20, 20, 40, 40);
2793
2794 auto check_empty_flips = [&cull_rect](const IRect& diff_rect,
2795 const std::string& label) {
2796 EXPECT_FALSE(diff_rect.IsEmpty());
2797 EXPECT_FALSE(cull_rect.IsEmpty());
2798
2799 // unflipped cull_rect vs flipped(empty) diff_rect
2800 // == cull_rect
2801 EXPECT_TRUE(cull_rect.Cutout(flip_lr(diff_rect)).has_value()) << label;
2802 EXPECT_EQ(cull_rect.Cutout(flip_lr(diff_rect)), cull_rect) << label;
2803 EXPECT_TRUE(cull_rect.Cutout(flip_tb(diff_rect)).has_value()) << label;
2804 EXPECT_EQ(cull_rect.Cutout(flip_tb(diff_rect)), cull_rect) << label;
2805 EXPECT_TRUE(cull_rect.Cutout(flip_lrtb(diff_rect)).has_value()) << label;
2806 EXPECT_EQ(cull_rect.Cutout(flip_lrtb(diff_rect)), cull_rect) << label;
2807
2808 // flipped(empty) cull_rect vs flipped(empty) diff_rect
2809 // == empty
2810 EXPECT_FALSE(flip_lr(cull_rect).Cutout(diff_rect).has_value()) << label;
2811 EXPECT_EQ(flip_lr(cull_rect).CutoutOrEmpty(diff_rect), IRect()) << label;
2812 EXPECT_FALSE(flip_tb(cull_rect).Cutout(diff_rect).has_value()) << label;
2813 EXPECT_EQ(flip_tb(cull_rect).CutoutOrEmpty(diff_rect), IRect()) << label;
2814 EXPECT_FALSE(flip_lrtb(cull_rect).Cutout(diff_rect).has_value()) << label;
2815 EXPECT_EQ(flip_lrtb(cull_rect).CutoutOrEmpty(diff_rect), IRect()) << label;
2816
2817 // flipped(empty) cull_rect vs unflipped diff_rect
2818 // == empty
2819 EXPECT_FALSE(flip_lr(cull_rect).Cutout(flip_lr(diff_rect)).has_value())
2820 << label;
2821 EXPECT_EQ(flip_lr(cull_rect).CutoutOrEmpty(flip_lr(diff_rect)), IRect())
2822 << label;
2823 EXPECT_FALSE(flip_tb(cull_rect).Cutout(flip_tb(diff_rect)).has_value())
2824 << label;
2825 EXPECT_EQ(flip_tb(cull_rect).CutoutOrEmpty(flip_tb(diff_rect)), IRect())
2826 << label;
2827 EXPECT_FALSE(flip_lrtb(cull_rect).Cutout(flip_lrtb(diff_rect)).has_value())
2828 << label;
2829 EXPECT_EQ(flip_lrtb(cull_rect).CutoutOrEmpty(flip_lrtb(diff_rect)), IRect())
2830 << label;
2831 };
2832
2833 auto non_reducing = [&cull_rect, &check_empty_flips](
2834 const IRect& diff_rect, const std::string& label) {
2835 EXPECT_EQ(cull_rect.Cutout(diff_rect), cull_rect) << label;
2836 EXPECT_EQ(cull_rect.CutoutOrEmpty(diff_rect), cull_rect) << label;
2837 check_empty_flips(diff_rect, label);
2838 };
2839
2840 auto reducing = [&cull_rect, &check_empty_flips](const IRect& diff_rect,
2841 const IRect& result_rect,
2842 const std::string& label) {
2843 EXPECT_TRUE(!result_rect.IsEmpty());
2844 EXPECT_EQ(cull_rect.Cutout(diff_rect), result_rect) << label;
2845 EXPECT_EQ(cull_rect.CutoutOrEmpty(diff_rect), result_rect) << label;
2846 check_empty_flips(diff_rect, label);
2847 };
2848
2849 auto emptying = [&cull_rect, &check_empty_flips](const IRect& diff_rect,
2850 const std::string& label) {
2851 EXPECT_FALSE(cull_rect.Cutout(diff_rect).has_value()) << label;
2852 EXPECT_EQ(cull_rect.CutoutOrEmpty(diff_rect), IRect()) << label;
2853 check_empty_flips(diff_rect, label);
2854 };
2855
2856 // Skim the corners and edge
2857 non_reducing(IRect::MakeLTRB(10, 10, 20, 20), "outside UL corner");
2858 non_reducing(IRect::MakeLTRB(20, 10, 40, 20), "Above");
2859 non_reducing(IRect::MakeLTRB(40, 10, 50, 20), "outside UR corner");
2860 non_reducing(IRect::MakeLTRB(40, 20, 50, 40), "Right");
2861 non_reducing(IRect::MakeLTRB(40, 40, 50, 50), "outside LR corner");
2862 non_reducing(IRect::MakeLTRB(20, 40, 40, 50), "Below");
2863 non_reducing(IRect::MakeLTRB(10, 40, 20, 50), "outside LR corner");
2864 non_reducing(IRect::MakeLTRB(10, 20, 20, 40), "Left");
2865
2866 // Overlap corners
2867 non_reducing(IRect::MakeLTRB(15, 15, 25, 25), "covering UL corner");
2868 non_reducing(IRect::MakeLTRB(35, 15, 45, 25), "covering UR corner");
2869 non_reducing(IRect::MakeLTRB(35, 35, 45, 45), "covering LR corner");
2870 non_reducing(IRect::MakeLTRB(15, 35, 25, 45), "covering LL corner");
2871
2872 // Overlap edges, but not across an entire side
2873 non_reducing(IRect::MakeLTRB(20, 15, 39, 25), "Top edge left-biased");
2874 non_reducing(IRect::MakeLTRB(21, 15, 40, 25), "Top edge, right biased");
2875 non_reducing(IRect::MakeLTRB(35, 20, 45, 39), "Right edge, top-biased");
2876 non_reducing(IRect::MakeLTRB(35, 21, 45, 40), "Right edge, bottom-biased");
2877 non_reducing(IRect::MakeLTRB(20, 35, 39, 45), "Bottom edge, left-biased");
2878 non_reducing(IRect::MakeLTRB(21, 35, 40, 45), "Bottom edge, right-biased");
2879 non_reducing(IRect::MakeLTRB(15, 20, 25, 39), "Left edge, top-biased");
2880 non_reducing(IRect::MakeLTRB(15, 21, 25, 40), "Left edge, bottom-biased");
2881
2882 // Slice all the way through the middle
2883 non_reducing(IRect::MakeLTRB(25, 15, 35, 45), "Vertical interior slice");
2884 non_reducing(IRect::MakeLTRB(15, 25, 45, 35), "Horizontal interior slice");
2885
2886 // Slice off each edge
2887 reducing(IRect::MakeLTRB(20, 15, 40, 25), //
2888 IRect::MakeLTRB(20, 25, 40, 40), //
2889 "Slice off top");
2890 reducing(IRect::MakeLTRB(35, 20, 45, 40), //
2891 IRect::MakeLTRB(20, 20, 35, 40), //
2892 "Slice off right");
2893 reducing(IRect::MakeLTRB(20, 35, 40, 45), //
2894 IRect::MakeLTRB(20, 20, 40, 35), //
2895 "Slice off bottom");
2896 reducing(IRect::MakeLTRB(15, 20, 25, 40), //
2897 IRect::MakeLTRB(25, 20, 40, 40), //
2898 "Slice off left");
2899
2900 // cull rect contains diff rect
2901 non_reducing(IRect::MakeLTRB(21, 21, 39, 39), "Contained, non-covering");
2902
2903 // cull rect equals diff rect
2904 emptying(cull_rect, "Perfectly covering");
2905
2906 // diff rect contains cull rect
2907 emptying(IRect::MakeLTRB(15, 15, 45, 45), "Smothering");
2908}
2909
2910TEST(RectTest, RectGetPoints) {
2911 {
2912 Rect r = Rect::MakeXYWH(100, 200, 300, 400);
2913 auto points = r.GetPoints();
2914 EXPECT_POINT_NEAR(points[0], Point(100, 200));
2915 EXPECT_POINT_NEAR(points[1], Point(400, 200));
2916 EXPECT_POINT_NEAR(points[2], Point(100, 600));
2917 EXPECT_POINT_NEAR(points[3], Point(400, 600));
2918 }
2919
2920 {
2921 Rect r = Rect::MakeMaximum();
2922 auto points = r.GetPoints();
2923 EXPECT_EQ(points[0], Point(std::numeric_limits<float>::lowest(),
2924 std::numeric_limits<float>::lowest()));
2925 EXPECT_EQ(points[1], Point(std::numeric_limits<float>::max(),
2926 std::numeric_limits<float>::lowest()));
2927 EXPECT_EQ(points[2], Point(std::numeric_limits<float>::lowest(),
2928 std::numeric_limits<float>::max()));
2929 EXPECT_EQ(points[3], Point(std::numeric_limits<float>::max(),
2930 std::numeric_limits<float>::max()));
2931 }
2932}
2933
2934TEST(RectTest, RectShift) {
2935 auto r = Rect::MakeLTRB(0, 0, 100, 100);
2936
2937 EXPECT_EQ(r.Shift(Point(10, 5)), Rect::MakeLTRB(10, 5, 110, 105));
2938 EXPECT_EQ(r.Shift(Point(-10, -5)), Rect::MakeLTRB(-10, -5, 90, 95));
2939}
2940
2941TEST(RectTest, RectGetTransformedPoints) {
2942 Rect r = Rect::MakeXYWH(100, 200, 300, 400);
2943 auto points = r.GetTransformedPoints(Matrix::MakeTranslation({10, 20}));
2944 EXPECT_POINT_NEAR(points[0], Point(110, 220));
2945 EXPECT_POINT_NEAR(points[1], Point(410, 220));
2946 EXPECT_POINT_NEAR(points[2], Point(110, 620));
2947 EXPECT_POINT_NEAR(points[3], Point(410, 620));
2948}
2949
2950TEST(RectTest, RectMakePointBounds) {
2951 {
2952 std::vector<Point> points{{1, 5}, {4, -1}, {0, 6}};
2953 auto r = Rect::MakePointBounds(points.begin(), points.end());
2954 auto expected = Rect::MakeXYWH(0, -1, 4, 7);
2955 EXPECT_TRUE(r.has_value());
2956 if (r.has_value()) {
2957 EXPECT_RECT_NEAR(r.value(), expected);
2958 }
2959 }
2960 {
2961 std::vector<Point> points;
2962 std::optional<Rect> r = Rect::MakePointBounds(points.begin(), points.end());
2963 EXPECT_FALSE(r.has_value());
2964 }
2965}
2966
2967TEST(RectTest, RectGetPositive) {
2968 {
2969 Rect r = Rect::MakeXYWH(100, 200, 300, 400);
2970 auto actual = r.GetPositive();
2971 EXPECT_RECT_NEAR(r, actual);
2972 }
2973 {
2974 Rect r = Rect::MakeXYWH(100, 200, -100, -100);
2975 auto actual = r.GetPositive();
2976 Rect expected = Rect::MakeXYWH(0, 100, 100, 100);
2977 EXPECT_RECT_NEAR(expected, actual);
2978 }
2979}
2980
2981TEST(RectTest, RectDirections) {
2982 auto r = Rect::MakeLTRB(1, 2, 3, 4);
2983
2984 EXPECT_EQ(r.GetLeft(), 1);
2985 EXPECT_EQ(r.GetTop(), 2);
2986 EXPECT_EQ(r.GetRight(), 3);
2987 EXPECT_EQ(r.GetBottom(), 4);
2988
2989 EXPECT_POINT_NEAR(r.GetLeftTop(), Point(1, 2));
2990 EXPECT_POINT_NEAR(r.GetRightTop(), Point(3, 2));
2991 EXPECT_POINT_NEAR(r.GetLeftBottom(), Point(1, 4));
2992 EXPECT_POINT_NEAR(r.GetRightBottom(), Point(3, 4));
2993}
2994
2995TEST(RectTest, RectProject) {
2996 {
2997 auto r = Rect::MakeLTRB(-100, -100, 100, 100);
2998 auto actual = r.Project(r);
2999 auto expected = Rect::MakeLTRB(0, 0, 1, 1);
3000 EXPECT_RECT_NEAR(expected, actual);
3001 }
3002 {
3003 auto r = Rect::MakeLTRB(-100, -100, 100, 100);
3004 auto actual = r.Project(Rect::MakeLTRB(0, 0, 100, 100));
3005 auto expected = Rect::MakeLTRB(0.5, 0.5, 1, 1);
3006 EXPECT_RECT_NEAR(expected, actual);
3007 }
3008}
3009
3010TEST(RectTest, RectRoundOut) {
3011 {
3012 auto r = Rect::MakeLTRB(-100, -200, 300, 400);
3013 EXPECT_EQ(Rect::RoundOut(r), r);
3014 }
3015 {
3016 auto r = Rect::MakeLTRB(-100.1, -200.1, 300.1, 400.1);
3017 EXPECT_EQ(Rect::RoundOut(r), Rect::MakeLTRB(-101, -201, 301, 401));
3018 }
3019}
3020
3021TEST(RectTest, IRectRoundOut) {
3022 {
3023 auto r = Rect::MakeLTRB(-100, -200, 300, 400);
3024 auto ir = IRect::MakeLTRB(-100, -200, 300, 400);
3025 EXPECT_EQ(IRect::RoundOut(r), ir);
3026 }
3027 {
3028 auto r = Rect::MakeLTRB(-100.1, -200.1, 300.1, 400.1);
3029 auto ir = IRect::MakeLTRB(-101, -201, 301, 401);
3030 EXPECT_EQ(IRect::RoundOut(r), ir);
3031 }
3032}
3033
3034TEST(RectTest, RectRound) {
3035 {
3036 auto r = Rect::MakeLTRB(-100, -200, 300, 400);
3037 EXPECT_EQ(Rect::Round(r), r);
3038 }
3039 {
3040 auto r = Rect::MakeLTRB(-100.4, -200.4, 300.4, 400.4);
3041 EXPECT_EQ(Rect::Round(r), Rect::MakeLTRB(-100, -200, 300, 400));
3042 }
3043 {
3044 auto r = Rect::MakeLTRB(-100.5, -200.5, 300.5, 400.5);
3045 EXPECT_EQ(Rect::Round(r), Rect::MakeLTRB(-101, -201, 301, 401));
3046 }
3047}
3048
3049TEST(RectTest, IRectRound) {
3050 {
3051 auto r = Rect::MakeLTRB(-100, -200, 300, 400);
3052 auto ir = IRect::MakeLTRB(-100, -200, 300, 400);
3053 EXPECT_EQ(IRect::Round(r), ir);
3054 }
3055 {
3056 auto r = Rect::MakeLTRB(-100.4, -200.4, 300.4, 400.4);
3057 auto ir = IRect::MakeLTRB(-100, -200, 300, 400);
3058 EXPECT_EQ(IRect::Round(r), ir);
3059 }
3060 {
3061 auto r = Rect::MakeLTRB(-100.5, -200.5, 300.5, 400.5);
3062 auto ir = IRect::MakeLTRB(-101, -201, 301, 401);
3063 EXPECT_EQ(IRect::Round(r), ir);
3064 }
3065}
3066
3067TEST(RectTest, TransformAndClipBounds) {
3068 {
3069 // This matrix should clip no corners.
3070 auto matrix = impeller::Matrix::MakeColumn(
3071 // clang-format off
3072 2.0f, 0.0f, 0.0f, 0.0f,
3073 0.0f, 4.0f, 0.0f, 0.0f,
3074 0.0f, 0.0f, 1.0f, 0.0f,
3075 0.0f, 0.0f, 0.0f, 8.0f
3076 // clang-format on
3077 );
3078 Rect src = Rect::MakeLTRB(100.0f, 100.0f, 200.0f, 200.0f);
3079 // None of these should have a W<0
3080 EXPECT_EQ(matrix.TransformHomogenous(src.GetLeftTop()),
3081 Vector3(200.0f, 400.0f, 8.0f));
3082 EXPECT_EQ(matrix.TransformHomogenous(src.GetRightTop()),
3083 Vector3(400.0f, 400.0f, 8.0f));
3084 EXPECT_EQ(matrix.TransformHomogenous(src.GetLeftBottom()),
3085 Vector3(200.0f, 800.0f, 8.0f));
3086 EXPECT_EQ(matrix.TransformHomogenous(src.GetRightBottom()),
3087 Vector3(400.0f, 800.0f, 8.0f));
3088
3089 Rect expect = Rect::MakeLTRB(25.0f, 50.0f, 50.0f, 100.0f);
3090 EXPECT_FALSE(src.TransformAndClipBounds(matrix).IsEmpty());
3091 EXPECT_EQ(src.TransformAndClipBounds(matrix), expect);
3092 }
3093
3094 {
3095 // This matrix should clip one corner.
3096 auto matrix = impeller::Matrix::MakeColumn(
3097 // clang-format off
3098 2.0f, 0.0f, 0.0f, -0.01f,
3099 0.0f, 2.0f, 0.0f, -0.006f,
3100 0.0f, 0.0f, 1.0f, 0.0f,
3101 0.0f, 0.0f, 0.0f, 3.0f
3102 // clang-format on
3103 );
3104 Rect src = Rect::MakeLTRB(100.0f, 100.0f, 200.0f, 200.0f);
3105 // Exactly one of these should have a W<0
3106 EXPECT_VECTOR3_NEAR(matrix.TransformHomogenous(src.GetLeftTop()),
3107 Vector3(200.0f, 200.0f, 1.4f));
3108 EXPECT_VECTOR3_NEAR(matrix.TransformHomogenous(src.GetRightTop()),
3109 Vector3(400.0f, 200.0f, 0.4f));
3110 EXPECT_VECTOR3_NEAR(matrix.TransformHomogenous(src.GetLeftBottom()),
3111 Vector3(200.0f, 400.0f, 0.8f));
3112 EXPECT_VECTOR3_NEAR(matrix.TransformHomogenous(src.GetRightBottom()),
3113 Vector3(400.0f, 400.0f, -0.2f));
3114
3115 Rect expect = Rect::MakeLTRB(142.85715f, 142.85715f, 6553600.f, 6553600.f);
3116 EXPECT_FALSE(src.TransformAndClipBounds(matrix).IsEmpty());
3117 EXPECT_RECT_NEAR(src.TransformAndClipBounds(matrix), expect);
3118 }
3119
3120 {
3121 // This matrix should clip two corners.
3122 auto matrix = impeller::Matrix::MakeColumn(
3123 // clang-format off
3124 2.0f, 0.0f, 0.0f, -.015f,
3125 0.0f, 2.0f, 0.0f, -.006f,
3126 0.0f, 0.0f, 1.0f, 0.0f,
3127 0.0f, 0.0f, 0.0f, 3.0f
3128 // clang-format on
3129 );
3130 Rect src = Rect::MakeLTRB(100.0f, 100.0f, 200.0f, 200.0f);
3131 // Exactly two of these should have a W<0
3132 EXPECT_VECTOR3_NEAR(matrix.TransformHomogenous(src.GetLeftTop()),
3133 Vector3(200.0f, 200.0f, 0.9f));
3134 EXPECT_VECTOR3_NEAR(matrix.TransformHomogenous(src.GetRightTop()),
3135 Vector3(400.0f, 200.0f, -0.6f));
3136 EXPECT_VECTOR3_NEAR(matrix.TransformHomogenous(src.GetLeftBottom()),
3137 Vector3(200.0f, 400.0f, 0.3f));
3138 EXPECT_VECTOR3_NEAR(matrix.TransformHomogenous(src.GetRightBottom()),
3139 Vector3(400.0f, 400.0f, -1.2f));
3140
3141 Rect expect = Rect::MakeLTRB(222.2222f, 222.2222f, 5898373.f, 6553600.f);
3142 EXPECT_FALSE(src.TransformAndClipBounds(matrix).IsEmpty());
3143 EXPECT_RECT_NEAR(src.TransformAndClipBounds(matrix), expect);
3144 }
3145
3146 {
3147 // This matrix should clip three corners.
3148 auto matrix = impeller::Matrix::MakeColumn(
3149 // clang-format off
3150 2.0f, 0.0f, 0.0f, -.02f,
3151 0.0f, 2.0f, 0.0f, -.006f,
3152 0.0f, 0.0f, 1.0f, 0.0f,
3153 0.0f, 0.0f, 0.0f, 3.0f
3154 // clang-format on
3155 );
3156 Rect src = Rect::MakeLTRB(100.0f, 100.0f, 200.0f, 200.0f);
3157 // Exactly three of these should have a W<0
3158 EXPECT_VECTOR3_NEAR(matrix.TransformHomogenous(src.GetLeftTop()),
3159 Vector3(200.0f, 200.0f, 0.4f));
3160 EXPECT_VECTOR3_NEAR(matrix.TransformHomogenous(src.GetRightTop()),
3161 Vector3(400.0f, 200.0f, -1.6f));
3162 EXPECT_VECTOR3_NEAR(matrix.TransformHomogenous(src.GetLeftBottom()),
3163 Vector3(200.0f, 400.0f, -0.2f));
3164 EXPECT_VECTOR3_NEAR(matrix.TransformHomogenous(src.GetRightBottom()),
3165 Vector3(400.0f, 400.0f, -2.2f));
3166
3167 Rect expect = Rect::MakeLTRB(499.99988f, 499.99988f, 5898340.f, 4369400.f);
3168 EXPECT_FALSE(src.TransformAndClipBounds(matrix).IsEmpty());
3169 EXPECT_RECT_NEAR(src.TransformAndClipBounds(matrix), expect);
3170 }
3171
3172 {
3173 // This matrix should clip all four corners.
3174 auto matrix = impeller::Matrix::MakeColumn(
3175 // clang-format off
3176 2.0f, 0.0f, 0.0f, -.025f,
3177 0.0f, 2.0f, 0.0f, -.006f,
3178 0.0f, 0.0f, 1.0f, 0.0f,
3179 0.0f, 0.0f, 0.0f, 3.0f
3180 // clang-format on
3181 );
3182 Rect src = Rect::MakeLTRB(100.0f, 100.0f, 200.0f, 200.0f);
3183 // All of these should have a W<0
3184 EXPECT_VECTOR3_NEAR(matrix.TransformHomogenous(src.GetLeftTop()),
3185 Vector3(200.0f, 200.0f, -0.1f));
3186 EXPECT_VECTOR3_NEAR(matrix.TransformHomogenous(src.GetRightTop()),
3187 Vector3(400.0f, 200.0f, -2.6f));
3188 EXPECT_VECTOR3_NEAR(matrix.TransformHomogenous(src.GetLeftBottom()),
3189 Vector3(200.0f, 400.0f, -0.7f));
3190 EXPECT_VECTOR3_NEAR(matrix.TransformHomogenous(src.GetRightBottom()),
3191 Vector3(400.0f, 400.0f, -3.2f));
3192
3193 EXPECT_TRUE(src.TransformAndClipBounds(matrix).IsEmpty());
3194 }
3195}
3196
3197} // namespace testing
3198} // namespace impeller
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