1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
|
/*************************************************************************/
/* rect2.h */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md). */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
#ifndef RECT2_H
#define RECT2_H
#include "core/math/vector2.h" // also includes math_funcs and ustring
struct Transform2D;
struct Rect2 {
Point2 position;
Size2 size;
const Vector2 &get_position() const { return position; }
void set_position(const Vector2 &p_pos) { position = p_pos; }
const Vector2 &get_size() const { return size; }
void set_size(const Vector2 &p_size) { size = p_size; }
real_t get_area() const { return size.width * size.height; }
inline bool intersects(const Rect2 &p_rect, const bool p_include_borders = false) const {
if (p_include_borders) {
if (position.x > (p_rect.position.x + p_rect.size.width)) {
return false;
}
if ((position.x + size.width) < p_rect.position.x) {
return false;
}
if (position.y > (p_rect.position.y + p_rect.size.height)) {
return false;
}
if ((position.y + size.height) < p_rect.position.y) {
return false;
}
} else {
if (position.x >= (p_rect.position.x + p_rect.size.width)) {
return false;
}
if ((position.x + size.width) <= p_rect.position.x) {
return false;
}
if (position.y >= (p_rect.position.y + p_rect.size.height)) {
return false;
}
if ((position.y + size.height) <= p_rect.position.y) {
return false;
}
}
return true;
}
inline real_t distance_to(const Vector2 &p_point) const {
real_t dist = 0.0;
bool inside = true;
if (p_point.x < position.x) {
real_t d = position.x - p_point.x;
dist = d;
inside = false;
}
if (p_point.y < position.y) {
real_t d = position.y - p_point.y;
dist = inside ? d : MIN(dist, d);
inside = false;
}
if (p_point.x >= (position.x + size.x)) {
real_t d = p_point.x - (position.x + size.x);
dist = inside ? d : MIN(dist, d);
inside = false;
}
if (p_point.y >= (position.y + size.y)) {
real_t d = p_point.y - (position.y + size.y);
dist = inside ? d : MIN(dist, d);
inside = false;
}
if (inside) {
return 0;
} else {
return dist;
}
}
bool intersects_transformed(const Transform2D &p_xform, const Rect2 &p_rect) const;
bool intersects_segment(const Point2 &p_from, const Point2 &p_to, Point2 *r_pos = nullptr, Point2 *r_normal = nullptr) const;
inline bool encloses(const Rect2 &p_rect) const {
return (p_rect.position.x >= position.x) && (p_rect.position.y >= position.y) &&
((p_rect.position.x + p_rect.size.x) <= (position.x + size.x)) &&
((p_rect.position.y + p_rect.size.y) <= (position.y + size.y));
}
_FORCE_INLINE_ bool has_no_area() const {
return (size.x <= 0 || size.y <= 0);
}
inline Rect2 clip(const Rect2 &p_rect) const { /// return a clipped rect
Rect2 new_rect = p_rect;
if (!intersects(new_rect)) {
return Rect2();
}
new_rect.position.x = MAX(p_rect.position.x, position.x);
new_rect.position.y = MAX(p_rect.position.y, position.y);
Point2 p_rect_end = p_rect.position + p_rect.size;
Point2 end = position + size;
new_rect.size.x = MIN(p_rect_end.x, end.x) - new_rect.position.x;
new_rect.size.y = MIN(p_rect_end.y, end.y) - new_rect.position.y;
return new_rect;
}
inline Rect2 merge(const Rect2 &p_rect) const { ///< return a merged rect
Rect2 new_rect;
new_rect.position.x = MIN(p_rect.position.x, position.x);
new_rect.position.y = MIN(p_rect.position.y, position.y);
new_rect.size.x = MAX(p_rect.position.x + p_rect.size.x, position.x + size.x);
new_rect.size.y = MAX(p_rect.position.y + p_rect.size.y, position.y + size.y);
new_rect.size = new_rect.size - new_rect.position; //make relative again
return new_rect;
};
inline bool has_point(const Point2 &p_point) const {
if (p_point.x < position.x) {
return false;
}
if (p_point.y < position.y) {
return false;
}
if (p_point.x >= (position.x + size.x)) {
return false;
}
if (p_point.y >= (position.y + size.y)) {
return false;
}
return true;
}
bool is_equal_approx(const Rect2 &p_rect) const;
bool operator==(const Rect2 &p_rect) const { return position == p_rect.position && size == p_rect.size; }
bool operator!=(const Rect2 &p_rect) const { return position != p_rect.position || size != p_rect.size; }
inline Rect2 grow(real_t p_by) const {
Rect2 g = *this;
g.position.x -= p_by;
g.position.y -= p_by;
g.size.width += p_by * 2;
g.size.height += p_by * 2;
return g;
}
inline Rect2 grow_margin(Margin p_margin, real_t p_amount) const {
Rect2 g = *this;
g = g.grow_individual((MARGIN_LEFT == p_margin) ? p_amount : 0,
(MARGIN_TOP == p_margin) ? p_amount : 0,
(MARGIN_RIGHT == p_margin) ? p_amount : 0,
(MARGIN_BOTTOM == p_margin) ? p_amount : 0);
return g;
}
inline Rect2 grow_individual(real_t p_left, real_t p_top, real_t p_right, real_t p_bottom) const {
Rect2 g = *this;
g.position.x -= p_left;
g.position.y -= p_top;
g.size.width += p_left + p_right;
g.size.height += p_top + p_bottom;
return g;
}
_FORCE_INLINE_ Rect2 expand(const Vector2 &p_vector) const {
Rect2 r = *this;
r.expand_to(p_vector);
return r;
}
inline void expand_to(const Vector2 &p_vector) { //in place function for speed
Vector2 begin = position;
Vector2 end = position + size;
if (p_vector.x < begin.x) {
begin.x = p_vector.x;
}
if (p_vector.y < begin.y) {
begin.y = p_vector.y;
}
if (p_vector.x > end.x) {
end.x = p_vector.x;
}
if (p_vector.y > end.y) {
end.y = p_vector.y;
}
position = begin;
size = end - begin;
}
_FORCE_INLINE_ Rect2 abs() const {
return Rect2(Point2(position.x + MIN(size.x, 0), position.y + MIN(size.y, 0)), size.abs());
}
operator String() const { return String(position) + ", " + String(size); }
Rect2() {}
Rect2(real_t p_x, real_t p_y, real_t p_width, real_t p_height) :
position(Point2(p_x, p_y)),
size(Size2(p_width, p_height)) {
}
Rect2(const Point2 &p_pos, const Size2 &p_size) :
position(p_pos),
size(p_size) {
}
};
struct Rect2i {
Point2i position;
Size2i size;
const Point2i &get_position() const { return position; }
void set_position(const Point2i &p_position) { position = p_position; }
const Size2i &get_size() const { return size; }
void set_size(const Size2i &p_size) { size = p_size; }
int get_area() const { return size.width * size.height; }
inline bool intersects(const Rect2i &p_rect) const {
if (position.x > (p_rect.position.x + p_rect.size.width)) {
return false;
}
if ((position.x + size.width) < p_rect.position.x) {
return false;
}
if (position.y > (p_rect.position.y + p_rect.size.height)) {
return false;
}
if ((position.y + size.height) < p_rect.position.y) {
return false;
}
return true;
}
inline bool encloses(const Rect2i &p_rect) const {
return (p_rect.position.x >= position.x) && (p_rect.position.y >= position.y) &&
((p_rect.position.x + p_rect.size.x) < (position.x + size.x)) &&
((p_rect.position.y + p_rect.size.y) < (position.y + size.y));
}
_FORCE_INLINE_ bool has_no_area() const {
return (size.x <= 0 || size.y <= 0);
}
inline Rect2i clip(const Rect2i &p_rect) const { /// return a clipped rect
Rect2i new_rect = p_rect;
if (!intersects(new_rect)) {
return Rect2i();
}
new_rect.position.x = MAX(p_rect.position.x, position.x);
new_rect.position.y = MAX(p_rect.position.y, position.y);
Point2 p_rect_end = p_rect.position + p_rect.size;
Point2 end = position + size;
new_rect.size.x = (int)(MIN(p_rect_end.x, end.x) - new_rect.position.x);
new_rect.size.y = (int)(MIN(p_rect_end.y, end.y) - new_rect.position.y);
return new_rect;
}
inline Rect2i merge(const Rect2i &p_rect) const { ///< return a merged rect
Rect2i new_rect;
new_rect.position.x = MIN(p_rect.position.x, position.x);
new_rect.position.y = MIN(p_rect.position.y, position.y);
new_rect.size.x = MAX(p_rect.position.x + p_rect.size.x, position.x + size.x);
new_rect.size.y = MAX(p_rect.position.y + p_rect.size.y, position.y + size.y);
new_rect.size = new_rect.size - new_rect.position; //make relative again
return new_rect;
};
bool has_point(const Point2 &p_point) const {
if (p_point.x < position.x) {
return false;
}
if (p_point.y < position.y) {
return false;
}
if (p_point.x >= (position.x + size.x)) {
return false;
}
if (p_point.y >= (position.y + size.y)) {
return false;
}
return true;
}
bool operator==(const Rect2i &p_rect) const { return position == p_rect.position && size == p_rect.size; }
bool operator!=(const Rect2i &p_rect) const { return position != p_rect.position || size != p_rect.size; }
Rect2i grow(int p_by) const {
Rect2i g = *this;
g.position.x -= p_by;
g.position.y -= p_by;
g.size.width += p_by * 2;
g.size.height += p_by * 2;
return g;
}
inline Rect2i grow_margin(Margin p_margin, int p_amount) const {
Rect2i g = *this;
g = g.grow_individual((MARGIN_LEFT == p_margin) ? p_amount : 0,
(MARGIN_TOP == p_margin) ? p_amount : 0,
(MARGIN_RIGHT == p_margin) ? p_amount : 0,
(MARGIN_BOTTOM == p_margin) ? p_amount : 0);
return g;
}
inline Rect2i grow_individual(int p_left, int p_top, int p_right, int p_bottom) const {
Rect2i g = *this;
g.position.x -= p_left;
g.position.y -= p_top;
g.size.width += p_left + p_right;
g.size.height += p_top + p_bottom;
return g;
}
_FORCE_INLINE_ Rect2i expand(const Vector2i &p_vector) const {
Rect2i r = *this;
r.expand_to(p_vector);
return r;
}
inline void expand_to(const Point2i &p_vector) {
Point2i begin = position;
Point2i end = position + size;
if (p_vector.x < begin.x) {
begin.x = p_vector.x;
}
if (p_vector.y < begin.y) {
begin.y = p_vector.y;
}
if (p_vector.x > end.x) {
end.x = p_vector.x;
}
if (p_vector.y > end.y) {
end.y = p_vector.y;
}
position = begin;
size = end - begin;
}
_FORCE_INLINE_ Rect2i abs() const {
return Rect2i(Point2i(position.x + MIN(size.x, 0), position.y + MIN(size.y, 0)), size.abs());
}
operator String() const { return String(position) + ", " + String(size); }
operator Rect2() const { return Rect2(position, size); }
Rect2i() {}
Rect2i(const Rect2 &p_r2) :
position(p_r2.position),
size(p_r2.size) {
}
Rect2i(int p_x, int p_y, int p_width, int p_height) :
position(Point2(p_x, p_y)),
size(Size2(p_width, p_height)) {
}
Rect2i(const Point2 &p_pos, const Size2 &p_size) :
position(p_pos),
size(p_size) {
}
};
#endif // RECT2_H
|